registerSubscribers: Split in small functions, standardize name and add comments.

No functional change.

.bazelrc

@@ -22,6 +22,7 @@ coverage --define=coverage_enabled=1
 build --workspace_status_command=./hack/workspace_status.sh
 
 build --define blst_disabled=false
+build --compilation_mode=opt
 run --define blst_disabled=false
 
 build:blst_disabled --define blst_disabled=true

.bazelversion

@@ -1 +1 @@
-7.4.1
+7.1.0

.github/PULL_REQUEST_TEMPLATE.md

@@ -33,5 +33,5 @@ Fixes #
 **Acknowledgements**
 
 - [ ] I have read [CONTRIBUTING.md](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md).
-- [ ] I have included a uniquely named [changelog fragment file](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md#maintaining-changelogmd).
+- [ ] I have made an appropriate entry to [CHANGELOG.md](https://github.com/prysmaticlabs/prysm/blob/develop/CHANGELOG.md).
 - [ ] I have added a description to this PR with sufficient context for reviewers to understand this PR.

.github/actions/gomodtidy/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.23-alpine
+FROM golang:1.22-alpine
 
 COPY entrypoint.sh /entrypoint.sh
 

.github/workflows/changelog.yml

@@ -1,34 +1,33 @@
-# This workflow will build a golang project
-# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
-
-name: changelog
+name: CI
 
 on:
   pull_request:
-    branches: [ "develop" ]
+    branches:
+      - develop
 
 jobs:
-  run-changelog-check:
-    runs-on: ubuntu-latest
+  changed_files:
+    runs-on: ubuntu-latest 
+    name: Check CHANGELOG.md
     steps:
-      - name: Checkout source code
-        uses: actions/checkout@v3
-
-      - name: Download unclog binary
-        uses: dsaltares/fetch-gh-release-asset@aa2ab1243d6e0d5b405b973c89fa4d06a2d0fff7 # 1.1.2
-        with:
-          repo: OffchainLabs/unclog
-          version: "tags/v0.1.3"
-          file: "unclog"
-
-      - name: Get new changelog files
-        id: new-changelog-files
+      - uses: actions/checkout@v4
+      - name: changelog modified
+        id: changelog-modified
         uses: tj-actions/changed-files@v45
         with:
-          files: |
-            changelog/**.md
+          files: CHANGELOG.md
 
-      - name: Run lint command
+      - name: List all changed files
         env:
-          ALL_ADDED_MARKDOWN: ${{ steps.new-changelog-files.outputs.added_files }}
-        run: chmod +x unclog && ./unclog check -fragment-env=ALL_ADDED_MARKDOWN
+          ALL_CHANGED_FILES: ${{ steps.changelog-modified.outputs.all_changed_files }}
+        run: |
+          if [[ ${ALL_CHANGED_FILES[*]} =~ (^|[[:space:]])"CHANGELOG.md"($|[[:space:]]) ]];
+          then
+            echo "CHANGELOG.md was modified.";
+            exit 0;
+          else
+            echo "CHANGELOG.md was not modified.";
+            echo "Please see CHANGELOG.md and follow the instructions to add your changes to that file."
+            echo "In some rare scenarios, a changelog entry is not required and this CI check can be ignored."
+            exit 1;
+          fi

.github/workflows/clang-format.yml

@@ -1,21 +0,0 @@
-name: Protobuf Format
-
-on: 
-  push:
-    branches: [ '*' ]
-  pull_request:
-    branches: [ '*' ]
-  merge_group:
-    types: [checks_requested]
-
-jobs:
-  clang-format-checking:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      # Is this step failing for you? 
-      # Run: clang-format -i proto/**/*.proto
-      # See: https://clang.llvm.org/docs/ClangFormat.html
-      - uses: RafikFarhad/clang-format-github-action@v3
-        with:
-          sources: "proto/**/*.proto"

.github/workflows/fuzz.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.23.5'
+          go-version: '1.22.3'
       - id: list
         uses: shogo82148/actions-go-fuzz/list@v0
         with:
@@ -36,7 +36,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.23.5'
+          go-version: '1.22.3'
       - uses: shogo82148/actions-go-fuzz/run@v0
         with:
           packages: ${{ matrix.package }}

.github/workflows/go.yml

@@ -28,10 +28,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Set up Go 1.23
+      - name: Set up Go 1.22
         uses: actions/setup-go@v4
         with:
-          go-version: '1.23.5'
+          go-version: '1.22.6'
       - name: Run Gosec Security Scanner
         run: | # https://github.com/securego/gosec/issues/469
           export PATH=$PATH:$(go env GOPATH)/bin
@@ -45,16 +45,16 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Set up Go 1.23
+      - name: Set up Go 1.22
         uses: actions/setup-go@v4
         with:
-          go-version: '1.23.5'
+          go-version: '1.22.6'
           id: go
 
       - name: Golangci-lint
         uses: golangci/golangci-lint-action@v5
         with:
-          version: v1.63.4
+          version: v1.56.1
           args: --config=.golangci.yml --out-${NO_FUTURE}format colored-line-number
 
   build:
@@ -64,7 +64,7 @@ jobs:
       - name: Set up Go 1.x
         uses: actions/setup-go@v4
         with:
-          go-version: '1.23.5'
+          go-version: '1.22.6'
         id: go
 
       - name: Check out code into the Go module directory

.golangci.yml

@@ -1,20 +1,28 @@
 run:
-  timeout: 10m
-  go: '1.23.5'
-
-issues:
-  exclude-files:
+  skip-files:
     - validator/web/site_data.go
     - .*_test.go
-  exclude-dirs:
+  skip-dirs:
     - proto
     - tools/analyzers
+  timeout: 10m
+  go: '1.22.6'
 
 linters:
   enable-all: true
   disable:
     # Deprecated linters:
+    - deadcode
+    - exhaustivestruct
+    - golint
     - govet
+    - ifshort
+    - interfacer
+    - maligned
+    - nosnakecase
+    - scopelint
+    - structcheck
+    - varcheck
 
     # Disabled for now:
     - asasalint
@@ -26,8 +34,6 @@ linters:
     - dogsled
     - dupl
     - durationcheck
-    - errname
-    - err113
     - exhaustive
     - exhaustruct
     - forbidigo
@@ -41,17 +47,17 @@ linters:
     - gocyclo
     - godot
     - godox
+    - goerr113
     - gofumpt
+    - gomnd
     - gomoddirectives
     - gosec
     - inamedparam
     - interfacebloat
-    - intrange
     - ireturn
     - lll
     - maintidx
     - makezero
-    - mnd
     - musttag
     - nakedret
     - nestif
@@ -66,7 +72,6 @@ linters:
     - predeclared
     - promlinter
     - protogetter
-    - recvcheck
     - revive
     - spancheck
     - staticcheck

.policy.yml

@@ -26,6 +26,7 @@ approval_rules:
       only_changed_files:
         paths:
           - "*pb.go"
+          - "*pb.gw.go"
           - "*.bazel"
     options:
       ignore_commits_by:
@@ -68,6 +69,7 @@ approval_rules:
       changed_files:
         ignore:
           - "*pb.go"
+          - "*pb.gw.go"
           - "*.bazel"
     options:
       ignore_commits_by:

BUILD.bazel

@@ -55,6 +55,13 @@ alias(
     visibility = ["//visibility:public"],
 )
 
+# Protobuf gRPC gateway compiler
+alias(
+    name = "grpc_gateway_proto_compiler",
+    actual = "@com_github_grpc_ecosystem_grpc_gateway_v2//protoc-gen-grpc-gateway:go_gen_grpc_gateway",
+    visibility = ["//visibility:public"],
+)
+
 gometalinter(
     name = "gometalinter",
     config = "//:.gometalinter.json",

CONTRIBUTING.md

@@ -125,11 +125,11 @@ Navigate to your fork of the repo on GitHub. On the upper left where the current
 
 **16. Add an entry to CHANGELOG.md.**
 
-All PRs must must include a changelog fragment file in the `changelog` directory. If your change is not user-facing or should not be mentioned in the changelog for some other reason, you may use the `Ignored` changelog section in your fragment's header to satisfy this requirement without altering the final release changelog. See the [Maintaining CHANGELOG.md](#maintaining-changelogmd) section for more information.
+If your change is user facing, you must include a CHANGELOG.md entry. See the [Maintaining CHANGELOG.md](#maintaining-changelogmd) section for more information.
 
 **17. Create a pull request.**
 
-Navigate your browser to https://github.com/prysmaticlabs/prysm and click on the new pull request button. In the “base” box on the left, leave the default selection “base develop”, the branch that you want your changes to be applied to. In the “compare” box on the right, select feature-in-progress-branch, the branch containing the changes you want to apply. You will then be asked to answer a few questions about your pull request. After you complete the questionnaire, the pull request will appear in the list of pull requests at https://github.com/prysmaticlabs/prysm/pulls. Ensure that you have added an entry to CHANGELOG.md if your PR is a user-facing change. See the [Maintaining CHANGELOG.md](#maintaining-changelogmd) section for more information.
+Navigate your browser to https://github.com/prysmaticlabs/prysm and click on the new pull request button. In the “base” box on the left, leave the default selection “base master”, the branch that you want your changes to be applied to. In the “compare” box on the right, select feature-in-progress-branch, the branch containing the changes you want to apply. You will then be asked to answer a few questions about your pull request. After you complete the questionnaire, the pull request will appear in the list of pull requests at https://github.com/prysmaticlabs/prysm/pulls. Ensure that you have added an entry to CHANGELOG.md if your PR is a user-facing change. See the [Maintaining CHANGELOG.md](#maintaining-changelogmd) section for more information.
 
 **18. Respond to comments by Core Contributors.**
 
@@ -177,10 +177,16 @@ $ git push myrepo feature-in-progress-branch -f
 
 ## Maintaining CHANGELOG.md
 
-This project follows the changelog guidelines from [keepachangelog.com](https://keepachangelog.com/en/1.1.0/). In order to minimize conflicts and workflow headaches, we chose to implement a changelog management
-strategy that uses changelog "fragment" files, managed by our changelog management tool called `unclog`. Each PR must include a new changelog fragment file in the `changelog` directory, as specified by unclog's
-[README.md](https://github.com/OffchainLabs/unclog?tab=readme-ov-file#what-is-a-changelog-fragment). As the `unclog` README suggests in the [Best Practices](https://github.com/OffchainLabs/unclog?tab=readme-ov-file#best-practices) section, 
-the standard naming convention for your PR's fragment file, to avoid conflicting with another fragment file, is `changelog/<github user name>_<PR branch name>.md`.
+This project follows the changelog guidelines from [keepachangelog.com](https://keepachangelog.com/en/1.1.0/).
+
+All PRs with user facing changes should have an entry in the CHANGELOG.md file and the change should be categorized in the appropriate category within the "Unreleased" section. The categories are:
+
+-  `Added` for new features.
+-  `Changed` for changes in existing functionality.
+-  `Deprecated` for soon-to-be removed features.
+-  `Removed` for now removed features.
+-  `Fixed` for any bug fixes.
+-  `Security` in case of vulnerabilities. Please see the [Security Policy](SECURITY.md) for responsible disclosure before adding a change with this category.
 
 ### Releasing
 

DEPENDENCIES.md

@@ -55,7 +55,7 @@ bazel build //beacon-chain --config=release
 ## Adding / updating dependencies
 
 1. Add your dependency as you would with go modules. I.e. `go get ...`
-1. Run `bazel run //:gazelle -- update-repos -from_file=go.mod -to_macro=deps.bzl%prysm_deps -prune=true` to update the bazel managed dependencies.
+1. Run `bazel run //:gazelle -- update-repos -from_file=go.mod` to update the bazel managed dependencies.
 
 Example:
 

INTEROP.md

@@ -2,21 +2,18 @@
 
 This README details how to setup Prysm for interop testing for usage with other Ethereum consensus clients.
 
-> [!IMPORTANT]  
-> This guide is likely to be outdated. The Prysm team does not have capacity to troubleshoot
-> outdated interop guides or instructions. If you experience issues with this guide, please file an
-> issue for visibility and propose fixes, if possible.
-
 ## Installation & Setup
 
 1. Install [Bazel](https://docs.bazel.build/versions/master/install.html) **(Recommended)**
 2. `git clone https://github.com/prysmaticlabs/prysm && cd prysm`
-3. `bazel build //cmd/...`
+3. `bazel build //...`
 
 ## Starting from Genesis
 
-Prysm can be started from a built-in mainnet genesis state, or started with a provided genesis state by
-using the `--genesis-state` flag and providing a path to the genesis.ssz file.
+Prysm supports a few ways to quickly launch a beacon node from basic configurations:
+
+- `NumValidators + GenesisTime`: Launches a beacon node by deterministically generating a state from a num-validators flag along with a genesis time **(Recommended)**
+- `SSZ Genesis`: Launches a beacon node  from a .ssz file containing a SSZ-encoded, genesis beacon state
 
 ## Generating a Genesis State
 
@@ -24,34 +21,21 @@ To setup the necessary files for these quick starts, Prysm provides a tool to ge
 a deterministically generated set of validator private keys following the official interop YAML format 
 [here](https://github.com/ethereum/eth2.0-pm/blob/master/interop/mocked_start).
 
-You can use `prysmctl` to create a deterministic genesis state for interop.
+You can use `bazel run //tools/genesis-state-gen` to create a deterministic genesis state for interop.
 
-```sh
-# Download (or create) a chain config file.
-curl https://raw.githubusercontent.com/ethereum/consensus-specs/refs/heads/dev/configs/minimal.yaml -o /tmp/minimal.yaml
+### Usage
+
+- **--genesis-time** uint: Unix timestamp used as the genesis time in the generated genesis state (defaults to now)
+- **--num-validators** int: Number of validators to deterministically include in the generated genesis state
+- **--output-ssz** string: Output filename of the SSZ marshaling of the generated genesis state
+- **--config-name=interop** string: name of the beacon chain config to use when generating the state. ex mainnet|minimal|interop
+
+The example below creates 64 validator keys, instantiates a genesis state with those 64 validators and with genesis unix timestamp 1567542540,
+and finally writes a ssz encoded output to ~/Desktop/genesis.ssz. This file can be used to kickstart the beacon chain in the next section. When using the `--interop-*` flags, the beacon node will assume the `interop` config should be used, unless a different config is specified on the command line.
 
-# Run prysmctl to generate genesis with a 2 minute genesis delay and 256 validators. 
-bazel run //cmd/prysmctl --config=minimal -- \
-  testnet generate-genesis \
-  --genesis-time-delay=120 \
-  --num-validators=256 \
-  --output-ssz=/tmp/genesis.ssz \
-  --chain-config-file=/tmp/minimal.yaml
 ```
-
-The flags are explained below:
-- `bazel run //cmd/prysmctl` is the bazel command to compile and run prysmctl.
-- `--config=minimal` is a bazel build time configuration flag to compile Prysm with minimal state constants.
-- `--` is an argument divider to tell bazel that everything after this divider should be passed as arguments to prysmctl. Without this divider, it isn't clear to bazel if the arguments are meant to be build time arguments or runtime arguments so the operation complains and fails to build without this divider.
-- `testnet` is the primary command argument for prysmctl.
-- `generate-genesis` is the subcommand to `testnet` in prysmctl.
-- `--genesis-time-delay` uint: The number of seconds in the future to define genesis. Example: a value of 60 will set the genesis time to 1 minute in the future. This should be sufficiently large enough to allow for you to start the beacon node before the genesis time. 
-- `--num-validators` int: Number of validators to deterministically include in the generated genesis state
-- `--output-ssz` string: Output filename of the SSZ marshaling of the generated genesis state
-- `--chain-config-file` string: Filepath to a chain config yaml file.
-
-Note: This guide saves items to the `/tmp/` directory which will not persist if your machine is
-restarted. Consider tweaking the arguments if persistence is needed.
+bazel run //tools/genesis-state-gen -- --config-name interop --output-ssz ~/Desktop/genesis.ssz --num-validators 64 --genesis-time 1567542540
+```
 
 ## Launching a Beacon Node + Validator Client
 
@@ -60,33 +44,45 @@ restarted. Consider tweaking the arguments if persistence is needed.
 Open up two terminal windows, run:
 
 ```
-bazel run //cmd/beacon-chain --config=minimal -- \
-  --minimal-config \
-  --bootstrap-node= \
-  --deposit-contract 0x8A04d14125D0FDCDc742F4A05C051De07232EDa4 \
-  --datadir=/tmp/beacon-chain-minimal-devnet \
-  --force-clear-db \
-  --min-sync-peers=0 \
-  --genesis-state=/tmp/genesis.ssz \
-  --chain-config-file=/tmp/minimal.yaml
+bazel run //beacon-chain -- \
+--bootstrap-node= \
+--deposit-contract 0x8A04d14125D0FDCDc742F4A05C051De07232EDa4 \
+--datadir=/tmp/beacon-chain-interop \
+--force-clear-db \
+--min-sync-peers=0 \
+--interop-num-validators 64 \
+--interop-eth1data-votes
 ```
 
-This will start the system with 256 validators. The flags used can be explained as such:
-
-- `bazel run //cmd/beacon-chain --config=minimal` builds and runs the beacon node in minimal build configuration.
-- `--` is a flag divider to distinguish between bazel flags and flags that should be passed to the application. All flags and arguments after this divider are passed to the beacon chain.
-- `--minimal-config` tells the beacon node to use minimal network configuration. This is different from the compile time state configuration flag `--config=minimal` and both are required.
-- `--bootstrap-node=` disables the default bootstrap nodes. This prevents the client from attempting to peer with mainnet nodes.
-- `--datadir=/tmp/beacon-chain-minimal-devnet` sets the data directory in a temporary location. Change this to your preferred destination.
-- `--force-clear-db` will delete the beaconchain.db file without confirming with the user. This is helpful for iteratively running local devnets without changing the datadir, but less helpful for one off runs where there was no database in the data directory.
-- `--min-sync-peers=0` allows the beacon node to skip initial sync without peers. This is essential because Prysm expects at least a few peers to start the blockchain.
-- `--genesis-state=/tmp/genesis.ssz` defines the path to the generated genesis ssz file. The beacon node will use this as the initial genesis state.
-- `--chain-config-file=/tmp/minimal.yaml` defines the path to the yaml file with the chain configuration.
-
-As soon as the beacon node has started, start the validator in the other terminal window. 
+This will deterministically generate a beacon genesis state and start
+the system with 64 validators and the genesis time set to the current unix timestamp.
+Wait a bit until your beacon chain starts, and in the other window:
 
 ```
-bazel run //cmd/validator --config=minimal -- --datadir=/tmp/validator --interop-num-validators=256 --minimal-config --suggested-fee-recipient=0x8A04d14125D0FDCDc742F4A05C051De07232EDa4
+bazel run //validator -- --keymanager=interop --keymanageropts='{"keys":64}'
 ```
 
-This will launch and kickstart the system with your 256 validators performing their duties accordingly.
+This will launch and kickstart the system with your 64 validators performing their duties accordingly.
+
+### Launching from `genesis.ssz`
+
+Assuming you generated a `genesis.ssz` file with 64 validators, open up two terminal windows, run:
+
+```
+ bazel run //beacon-chain -- \
+--bootstrap-node= \
+--deposit-contract 0x8A04d14125D0FDCDc742F4A05C051De07232EDa4 \
+--datadir=/tmp/beacon-chain-interop \
+--force-clear-db \
+--min-sync-peers=0 \
+--interop-genesis-state /path/to/genesis.ssz \
+--interop-eth1data-votes
+```
+
+Wait a bit until your beacon chain starts, and in the other window:
+
+```
+bazel run //validator -- --keymanager=interop --keymanageropts='{"keys":64}'
+```
+
+This will launch and kickstart the system with your 64 validators performing their duties accordingly.

WORKSPACE

@@ -16,34 +16,6 @@ load("@rules_pkg//:deps.bzl", "rules_pkg_dependencies")
 
 rules_pkg_dependencies()
 
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
-
-http_archive(
-    name = "toolchains_protoc",
-    sha256 = "abb1540f8a9e045422730670ebb2f25b41fa56ca5a7cf795175a110a0a68f4ad",
-    strip_prefix = "toolchains_protoc-0.3.6",
-    url = "https://github.com/aspect-build/toolchains_protoc/releases/download/v0.3.6/toolchains_protoc-v0.3.6.tar.gz",
-)
-
-load("@toolchains_protoc//protoc:repositories.bzl", "rules_protoc_dependencies")
-
-rules_protoc_dependencies()
-
-load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies")
-
-rules_proto_dependencies()
-
-load("@bazel_features//:deps.bzl", "bazel_features_deps")
-
-bazel_features_deps()
-
-load("@toolchains_protoc//protoc:toolchain.bzl", "protoc_toolchains")
-
-protoc_toolchains(
-    name = "protoc_toolchains",
-    version = "v25.3",
-)
-
 HERMETIC_CC_TOOLCHAIN_VERSION = "v3.0.1"
 
 http_archive(
@@ -129,9 +101,9 @@ http_archive(
 
 http_archive(
     name = "aspect_bazel_lib",
-    sha256 = "a272d79bb0ac6b6965aa199b1f84333413452e87f043b53eca7f347a23a478e8",
-    strip_prefix = "bazel-lib-2.9.3",
-    url = "https://github.com/bazel-contrib/bazel-lib/releases/download/v2.9.3/bazel-lib-v2.9.3.tar.gz",
+    sha256 = "f5ea76682b209cc0bd90d0f5a3b26d2f7a6a2885f0c5f615e72913f4805dbb0d",
+    strip_prefix = "bazel-lib-2.5.0",
+    url = "https://github.com/aspect-build/bazel-lib/releases/download/v2.5.0/bazel-lib-v2.5.0.tar.gz",
 )
 
 load("@aspect_bazel_lib//lib:repositories.bzl", "aspect_bazel_lib_dependencies", "aspect_bazel_lib_register_toolchains")
@@ -165,10 +137,10 @@ http_archive(
         # Expose internals of go_test for custom build transitions.
         "//third_party:io_bazel_rules_go_test.patch",
     ],
-    sha256 = "b2038e2de2cace18f032249cb4bb0048abf583a36369fa98f687af1b3f880b26",
+    sha256 = "80a98277ad1311dacd837f9b16db62887702e9f1d1c4c9f796d0121a46c8e184",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.48.1/rules_go-v0.48.1.zip",
-        "https://github.com/bazelbuild/rules_go/releases/download/v0.48.1/rules_go-v0.48.1.zip",
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.46.0/rules_go-v0.46.0.zip",
+        "https://github.com/bazelbuild/rules_go/releases/download/v0.46.0/rules_go-v0.46.0.zip",
     ],
 )
 
@@ -193,7 +165,7 @@ load("@rules_oci//oci:pull.bzl", "oci_pull")
 oci_pull(
     name = "linux_debian11_multiarch_base",  # Debian bullseye
     digest = "sha256:b82f113425c5b5c714151aaacd8039bc141821cdcd3c65202d42bdf9c43ae60b",  # 2023-12-12
-    image = "gcr.io/prysmaticlabs/distroless/cc-debian11",
+    image = "gcr.io/distroless/cc-debian11",
     platforms = [
         "linux/amd64",
         "linux/arm64/v8",
@@ -210,7 +182,7 @@ load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_depe
 go_rules_dependencies()
 
 go_register_toolchains(
-    go_version = "1.23.5",
+    go_version = "1.22.4",
     nogo = "@//:nogo",
 )
 
@@ -255,7 +227,7 @@ filegroup(
     url = "https://github.com/ethereum/EIPs/archive/5480440fe51742ed23342b68cf106cefd427e39d.tar.gz",
 )
 
-consensus_spec_version = "v1.5.0-beta.2"
+consensus_spec_version = "v1.5.0-alpha.5"
 
 bls_test_version = "v0.1.1"
 
@@ -271,7 +243,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-X/bMxbKg1clo2aFEjBoeuFq/U+BF1eQopgRP/7nI3Qg=",
+    integrity = "sha256-R9vG5HEL5eGMOAmbkKfJ2jfelNqL5V0xBUPiXOiGM6U=",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/general.tar.gz" % consensus_spec_version,
 )
 
@@ -287,7 +259,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-WSxdri5OJGuNApW+odKle5UzToDyEOx+F3lMiqamJAg=",
+    integrity = "sha256-AEIiEOlf1XuxoRMCsN+kgJMo4LrS05+biTA1p/7Ro00=",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/minimal.tar.gz" % consensus_spec_version,
 )
 
@@ -303,7 +275,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-LYE8l3y/zSt4YVrehrJ3ralqtgeYNildiIp+HR6+xAI=",
+    integrity = "sha256-LH/Xr20yrJRYnbpjRGupMWTIOWt3cpxZJWXgThwVDsk=",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/mainnet.tar.gz" % consensus_spec_version,
 )
 
@@ -318,7 +290,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-jvZQ90qcJMTOqMsPO7sgeEVQmewZTHcz7LVDkNqwTFQ=",
+    integrity = "sha256-mlytz4MPjKh0DwV7FMiAtnRbJw9B6o78/x66/vmnYc8=",
     strip_prefix = "consensus-specs-" + consensus_spec_version[1:],
     url = "https://github.com/ethereum/consensus-specs/archive/refs/tags/%s.tar.gz" % consensus_spec_version,
 )
@@ -370,22 +342,6 @@ filegroup(
     url = "https://github.com/eth-clients/holesky/archive/874c199423ccd180607320c38cbaca05d9a1573a.tar.gz",  # 2024-06-18
 )
 
-http_archive(
-    name = "sepolia_testnet",
-    build_file_content = """
-filegroup(
-    name = "configs",
-    srcs = [
-        "metadata/config.yaml",
-    ],
-    visibility = ["//visibility:public"],
-)
-""",
-    integrity = "sha256-cY/UgpCcYEhQf7JefD65FI8tn/A+rAvKhcm2/qiVdqY=",
-    strip_prefix = "sepolia-f2c219a93c4491cee3d90c18f2f8e82aed850eab",
-    url = "https://github.com/eth-clients/sepolia/archive/f2c219a93c4491cee3d90c18f2f8e82aed850eab.tar.gz",  # 2024-09-19
-)
-
 http_archive(
     name = "com_google_protobuf",
     sha256 = "9bd87b8280ef720d3240514f884e56a712f2218f0d693b48050c836028940a42",

api/client/beacon/BUILD.bazel

@@ -3,6 +3,7 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
     name = "go_default_library",
     srcs = [
+        "checkpoint.go",
         "client.go",
         "doc.go",
         "health.go",
@@ -15,19 +16,28 @@ go_library(
         "//api/client/beacon/iface:go_default_library",
         "//api/server:go_default_library",
         "//api/server/structs:go_default_library",
+        "//beacon-chain/core/helpers:go_default_library",
+        "//beacon-chain/state:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
+        "//encoding/ssz/detect:go_default_library",
+        "//io/file:go_default_library",
         "//network/forks:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
+        "//runtime/version:go_default_library",
+        "//time/slots:go_default_library",
         "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
+        "@org_golang_x_mod//semver:go_default_library",
     ],
 )
 
 go_test(
     name = "go_default_test",
     srcs = [
+        "checkpoint_test.go",
         "client_test.go",
         "health_test.go",
     ],
@@ -35,7 +45,19 @@ go_test(
     deps = [
         "//api/client:go_default_library",
         "//api/client/beacon/testing:go_default_library",
+        "//beacon-chain/state:go_default_library",
+        "//config/params:go_default_library",
+        "//consensus-types/blocks:go_default_library",
+        "//consensus-types/blocks/testing:go_default_library",
+        "//consensus-types/primitives:go_default_library",
+        "//encoding/ssz/detect:go_default_library",
+        "//network/forks:go_default_library",
+        "//proto/prysm/v1alpha1:go_default_library",
+        "//runtime/version:go_default_library",
         "//testing/require:go_default_library",
+        "//testing/util:go_default_library",
+        "//time/slots:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
         "@org_uber_go_mock//gomock:go_default_library",
     ],
 )

api/client/beacon/checkpoint.go

@@ -0,0 +1,276 @@
+package beacon
+
+import (
+	"context"
+	"fmt"
+	"path"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/pkg/errors"
+	base "github.com/prysmaticlabs/prysm/v5/api/client"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/encoding/ssz/detect"
+	"github.com/prysmaticlabs/prysm/v5/io/file"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
+	"github.com/prysmaticlabs/prysm/v5/time/slots"
+	"github.com/sirupsen/logrus"
+	"golang.org/x/mod/semver"
+)
+
+var errCheckpointBlockMismatch = errors.New("mismatch between checkpoint sync state and block")
+
+// OriginData represents the BeaconState and ReadOnlySignedBeaconBlock necessary to start an empty Beacon Node
+// using Checkpoint Sync.
+type OriginData struct {
+	sb []byte
+	bb []byte
+	st state.BeaconState
+	b  interfaces.ReadOnlySignedBeaconBlock
+	vu *detect.VersionedUnmarshaler
+	br [32]byte
+	sr [32]byte
+}
+
+// SaveBlock saves the downloaded block to a unique file in the given path.
+// For readability and collision avoidance, the file name includes: type, config name, slot and root
+func (o *OriginData) SaveBlock(dir string) (string, error) {
+	blockPath := path.Join(dir, fname("block", o.vu, o.b.Block().Slot(), o.br))
+	return blockPath, file.WriteFile(blockPath, o.BlockBytes())
+}
+
+// SaveState saves the downloaded state to a unique file in the given path.
+// For readability and collision avoidance, the file name includes: type, config name, slot and root
+func (o *OriginData) SaveState(dir string) (string, error) {
+	statePath := path.Join(dir, fname("state", o.vu, o.st.Slot(), o.sr))
+	return statePath, file.WriteFile(statePath, o.StateBytes())
+}
+
+// StateBytes returns the ssz-encoded bytes of the downloaded BeaconState value.
+func (o *OriginData) StateBytes() []byte {
+	return o.sb
+}
+
+// BlockBytes returns the ssz-encoded bytes of the downloaded ReadOnlySignedBeaconBlock value.
+func (o *OriginData) BlockBytes() []byte {
+	return o.bb
+}
+
+func fname(prefix string, vu *detect.VersionedUnmarshaler, slot primitives.Slot, root [32]byte) string {
+	return fmt.Sprintf("%s_%s_%s_%d-%#x.ssz", prefix, vu.Config.ConfigName, version.String(vu.Fork), slot, root)
+}
+
+// DownloadFinalizedData downloads the most recently finalized state, and the block most recently applied to that state.
+// This pair can be used to initialize a new beacon node via checkpoint sync.
+func DownloadFinalizedData(ctx context.Context, client *Client) (*OriginData, error) {
+	sb, err := client.GetState(ctx, IdFinalized)
+	if err != nil {
+		return nil, err
+	}
+	vu, err := detect.FromState(sb)
+	if err != nil {
+		return nil, errors.Wrap(err, "error detecting chain config for finalized state")
+	}
+
+	log.WithFields(logrus.Fields{
+		"name": vu.Config.ConfigName,
+		"fork": version.String(vu.Fork),
+	}).Info("Detected supported config in remote finalized state")
+
+	s, err := vu.UnmarshalBeaconState(sb)
+	if err != nil {
+		return nil, errors.Wrap(err, "error unmarshaling finalized state to correct version")
+	}
+
+	slot := s.LatestBlockHeader().Slot
+	bb, err := client.GetBlock(ctx, IdFromSlot(slot))
+	if err != nil {
+		return nil, errors.Wrapf(err, "error requesting block by slot = %d", slot)
+	}
+	b, err := vu.UnmarshalBeaconBlock(bb)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to unmarshal block to a supported type using the detected fork schedule")
+	}
+	br, err := b.Block().HashTreeRoot()
+	if err != nil {
+		return nil, errors.Wrap(err, "error computing hash_tree_root of retrieved block")
+	}
+	bodyRoot, err := b.Block().Body().HashTreeRoot()
+	if err != nil {
+		return nil, errors.Wrap(err, "error computing hash_tree_root of retrieved block body")
+	}
+
+	sbr := bytesutil.ToBytes32(s.LatestBlockHeader().BodyRoot)
+	if sbr != bodyRoot {
+		return nil, errors.Wrapf(errCheckpointBlockMismatch, "state body root = %#x, block body root = %#x", sbr, bodyRoot)
+	}
+	sr, err := s.HashTreeRoot(ctx)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to compute htr for finalized state at slot=%d", s.Slot())
+	}
+
+	log.
+		WithField("blockSlot", b.Block().Slot()).
+		WithField("stateSlot", s.Slot()).
+		WithField("stateRoot", hexutil.Encode(sr[:])).
+		WithField("blockRoot", hexutil.Encode(br[:])).
+		Info("Downloaded checkpoint sync state and block.")
+	return &OriginData{
+		st: s,
+		b:  b,
+		sb: sb,
+		bb: bb,
+		vu: vu,
+		br: br,
+		sr: sr,
+	}, nil
+}
+
+// WeakSubjectivityData represents the state root, block root and epoch of the BeaconState + ReadOnlySignedBeaconBlock
+// that falls at the beginning of the current weak subjectivity period. These values can be used to construct
+// a weak subjectivity checkpoint beacon node flag to be used for validation.
+type WeakSubjectivityData struct {
+	BlockRoot [32]byte
+	StateRoot [32]byte
+	Epoch     primitives.Epoch
+}
+
+// CheckpointString returns the standard string representation of a Checkpoint.
+// The format is a hex-encoded block root, followed by the epoch of the block, separated by a colon. For example:
+// "0x1c35540cac127315fabb6bf29181f2ae0de1a3fc909d2e76ba771e61312cc49a:74888"
+func (wsd *WeakSubjectivityData) CheckpointString() string {
+	return fmt.Sprintf("%#x:%d", wsd.BlockRoot, wsd.Epoch)
+}
+
+// ComputeWeakSubjectivityCheckpoint attempts to use the prysm weak_subjectivity api
+// to obtain the current weak_subjectivity checkpoint.
+// For non-prysm nodes, the same computation will be performed with extra steps,
+// using the head state downloaded from the beacon node api.
+func ComputeWeakSubjectivityCheckpoint(ctx context.Context, client *Client) (*WeakSubjectivityData, error) {
+	ws, err := client.GetWeakSubjectivity(ctx)
+	if err != nil {
+		// a 404/405 is expected if querying an endpoint that doesn't support the weak subjectivity checkpoint api
+		if !errors.Is(err, base.ErrNotOK) {
+			return nil, errors.Wrap(err, "unexpected API response for prysm-only weak subjectivity checkpoint API")
+		}
+		// fall back to vanilla Beacon Node API method
+		return computeBackwardsCompatible(ctx, client)
+	}
+	log.Printf("server weak subjectivity checkpoint response - epoch=%d, block_root=%#x, state_root=%#x", ws.Epoch, ws.BlockRoot, ws.StateRoot)
+	return ws, nil
+}
+
+const (
+	prysmMinimumVersion     = "v2.0.7"
+	prysmImplementationName = "Prysm"
+)
+
+// errUnsupportedPrysmCheckpointVersion indicates remote beacon node can't be used for checkpoint retrieval.
+var errUnsupportedPrysmCheckpointVersion = errors.New("node does not meet minimum version requirements for checkpoint retrieval")
+
+// for older endpoints or clients that do not support the weak_subjectivity api method
+// we gather the necessary data for a checkpoint sync by:
+// - inspecting the remote server's head state and computing the weak subjectivity epoch locally
+// - requesting the state at the first slot of the epoch
+// - using hash_tree_root(state.latest_block_header) to compute the block the state integrates
+// - requesting that block by its root
+func computeBackwardsCompatible(ctx context.Context, client *Client) (*WeakSubjectivityData, error) {
+	log.Print("falling back to generic checkpoint derivation, weak_subjectivity API not supported by server")
+	nv, err := client.GetNodeVersion(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to proceed with fallback method without confirming node version")
+	}
+	if nv.implementation == prysmImplementationName && semver.Compare(nv.semver, prysmMinimumVersion) < 0 {
+		return nil, errors.Wrapf(errUnsupportedPrysmCheckpointVersion, "%s < minimum (%s)", nv.semver, prysmMinimumVersion)
+	}
+	epoch, err := getWeakSubjectivityEpochFromHead(ctx, client)
+	if err != nil {
+		return nil, errors.Wrap(err, "error computing weak subjectivity epoch via head state inspection")
+	}
+
+	// use first slot of the epoch for the state slot
+	slot, err := slots.EpochStart(epoch)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error computing first slot of epoch=%d", epoch)
+	}
+
+	log.Printf("requesting checkpoint state at slot %d", slot)
+	// get the state at the first slot of the epoch
+	sb, err := client.GetState(ctx, IdFromSlot(slot))
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to request state by slot from api, slot=%d", slot)
+	}
+
+	// ConfigFork is used to unmarshal the BeaconState so we can read the block root in latest_block_header
+	vu, err := detect.FromState(sb)
+	if err != nil {
+		return nil, errors.Wrap(err, "error detecting chain config for beacon state")
+	}
+	log.Printf("detected supported config in checkpoint state, name=%s, fork=%s", vu.Config.ConfigName, version.String(vu.Fork))
+
+	s, err := vu.UnmarshalBeaconState(sb)
+	if err != nil {
+		return nil, errors.Wrap(err, "error using detected config fork to unmarshal state bytes")
+	}
+
+	// compute state and block roots
+	sr, err := s.HashTreeRoot(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "error computing hash_tree_root of state")
+	}
+
+	h := s.LatestBlockHeader()
+	h.StateRoot = sr[:]
+	br, err := h.HashTreeRoot()
+	if err != nil {
+		return nil, errors.Wrap(err, "error while computing block root using state data")
+	}
+
+	bb, err := client.GetBlock(ctx, IdFromRoot(br))
+	if err != nil {
+		return nil, errors.Wrapf(err, "error requesting block by root = %d", br)
+	}
+	b, err := vu.UnmarshalBeaconBlock(bb)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to unmarshal block to a supported type using the detected fork schedule")
+	}
+	br, err = b.Block().HashTreeRoot()
+	if err != nil {
+		return nil, errors.Wrap(err, "error computing hash_tree_root for block obtained via root")
+	}
+
+	return &WeakSubjectivityData{
+		Epoch:     epoch,
+		BlockRoot: br,
+		StateRoot: sr,
+	}, nil
+}
+
+// this method downloads the head state, which can be used to find the correct chain config
+// and use prysm's helper methods to compute the latest weak subjectivity epoch.
+func getWeakSubjectivityEpochFromHead(ctx context.Context, client *Client) (primitives.Epoch, error) {
+	headBytes, err := client.GetState(ctx, IdHead)
+	if err != nil {
+		return 0, err
+	}
+	vu, err := detect.FromState(headBytes)
+	if err != nil {
+		return 0, errors.Wrap(err, "error detecting chain config for beacon state")
+	}
+	log.Printf("detected supported config in remote head state, name=%s, fork=%s", vu.Config.ConfigName, version.String(vu.Fork))
+	headState, err := vu.UnmarshalBeaconState(headBytes)
+	if err != nil {
+		return 0, errors.Wrap(err, "error unmarshaling state to correct version")
+	}
+
+	epoch, err := helpers.LatestWeakSubjectivityEpoch(ctx, headState, vu.Config)
+	if err != nil {
+		return 0, errors.Wrap(err, "error computing the weak subjectivity epoch from head state")
+	}
+
+	log.Printf("(computed client-side) weak subjectivity epoch = %d", epoch)
+	return epoch, nil
+}

api/client/beacon/checkpoint_test.go

@@ -1,4 +1,4 @@
-package checkpoint
+package beacon
 
 import (
 	"bytes"
@@ -11,7 +11,6 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/api/client"
-	"github.com/prysmaticlabs/prysm/v5/api/client/beacon"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
@@ -26,6 +25,19 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 )
 
+type testRT struct {
+	rt func(*http.Request) (*http.Response, error)
+}
+
+func (rt *testRT) RoundTrip(req *http.Request) (*http.Response, error) {
+	if rt.rt != nil {
+		return rt.rt(req)
+	}
+	return nil, errors.New("RoundTripper not implemented")
+}
+
+var _ http.RoundTripper = &testRT{}
+
 func marshalToEnvelope(val interface{}) ([]byte, error) {
 	raw, err := json.Marshal(val)
 	if err != nil {
@@ -51,6 +63,35 @@ func TestMarshalToEnvelope(t *testing.T) {
 	require.Equal(t, expected, string(encoded))
 }
 
+func TestFallbackVersionCheck(t *testing.T) {
+	trans := &testRT{rt: func(req *http.Request) (*http.Response, error) {
+		res := &http.Response{Request: req}
+		switch req.URL.Path {
+		case getNodeVersionPath:
+			res.StatusCode = http.StatusOK
+			b := bytes.NewBuffer(nil)
+			d := struct {
+				Version string `json:"version"`
+			}{
+				Version: "Prysm/v2.0.5 (linux amd64)",
+			}
+			encoded, err := marshalToEnvelope(d)
+			require.NoError(t, err)
+			b.Write(encoded)
+			res.Body = io.NopCloser(b)
+		case getWeakSubjectivityPath:
+			res.StatusCode = http.StatusNotFound
+		}
+		return res, nil
+	}}
+
+	c, err := NewClient("http://localhost:3500", client.WithRoundTripper(trans))
+	require.NoError(t, err)
+	ctx := context.Background()
+	_, err = ComputeWeakSubjectivityCheckpoint(ctx, c)
+	require.ErrorIs(t, err, errUnsupportedPrysmCheckpointVersion)
+}
+
 func TestFname(t *testing.T) {
 	vu := &detect.VersionedUnmarshaler{
 		Config: params.MainnetConfig(),
@@ -119,7 +160,7 @@ func TestDownloadWeakSubjectivityCheckpoint(t *testing.T) {
 
 	wsSerialized, err := wst.MarshalSSZ()
 	require.NoError(t, err)
-	expectedWSD := beacon.WeakSubjectivityData{
+	expectedWSD := WeakSubjectivityData{
 		BlockRoot: bRoot,
 		StateRoot: wRoot,
 		Epoch:     epoch,
@@ -128,7 +169,7 @@ func TestDownloadWeakSubjectivityCheckpoint(t *testing.T) {
 	trans := &testRT{rt: func(req *http.Request) (*http.Response, error) {
 		res := &http.Response{Request: req}
 		switch req.URL.Path {
-		case beacon.GetWeakSubjectivityPath:
+		case getWeakSubjectivityPath:
 			res.StatusCode = http.StatusOK
 			cp := struct {
 				Epoch string `json:"epoch"`
@@ -147,10 +188,10 @@ func TestDownloadWeakSubjectivityCheckpoint(t *testing.T) {
 			rb, err := marshalToEnvelope(wsr)
 			require.NoError(t, err)
 			res.Body = io.NopCloser(bytes.NewBuffer(rb))
-		case beacon.RenderGetStatePath(beacon.IdFromSlot(wSlot)):
+		case renderGetStatePath(IdFromSlot(wSlot)):
 			res.StatusCode = http.StatusOK
 			res.Body = io.NopCloser(bytes.NewBuffer(wsSerialized))
-		case beacon.RenderGetBlockPath(beacon.IdFromRoot(bRoot)):
+		case renderGetBlockPath(IdFromRoot(bRoot)):
 			res.StatusCode = http.StatusOK
 			res.Body = io.NopCloser(bytes.NewBuffer(serBlock))
 		}
@@ -158,7 +199,7 @@ func TestDownloadWeakSubjectivityCheckpoint(t *testing.T) {
 		return res, nil
 	}}
 
-	c, err := beacon.NewClient("http://localhost:3500", client.WithRoundTripper(trans))
+	c, err := NewClient("http://localhost:3500", client.WithRoundTripper(trans))
 	require.NoError(t, err)
 
 	wsd, err := ComputeWeakSubjectivityCheckpoint(ctx, c)
@@ -222,7 +263,7 @@ func TestDownloadBackwardsCompatibleCombined(t *testing.T) {
 	trans := &testRT{rt: func(req *http.Request) (*http.Response, error) {
 		res := &http.Response{Request: req}
 		switch req.URL.Path {
-		case beacon.GetNodeVersionPath:
+		case getNodeVersionPath:
 			res.StatusCode = http.StatusOK
 			b := bytes.NewBuffer(nil)
 			d := struct {
@@ -234,15 +275,15 @@ func TestDownloadBackwardsCompatibleCombined(t *testing.T) {
 			require.NoError(t, err)
 			b.Write(encoded)
 			res.Body = io.NopCloser(b)
-		case beacon.GetWeakSubjectivityPath:
+		case getWeakSubjectivityPath:
 			res.StatusCode = http.StatusNotFound
-		case beacon.RenderGetStatePath(beacon.IdHead):
+		case renderGetStatePath(IdHead):
 			res.StatusCode = http.StatusOK
 			res.Body = io.NopCloser(bytes.NewBuffer(serialized))
-		case beacon.RenderGetStatePath(beacon.IdFromSlot(wSlot)):
+		case renderGetStatePath(IdFromSlot(wSlot)):
 			res.StatusCode = http.StatusOK
 			res.Body = io.NopCloser(bytes.NewBuffer(wsSerialized))
-		case beacon.RenderGetBlockPath(beacon.IdFromRoot(bRoot)):
+		case renderGetBlockPath(IdFromRoot(bRoot)):
 			res.StatusCode = http.StatusOK
 			res.Body = io.NopCloser(bytes.NewBuffer(serBlock))
 		}
@@ -250,7 +291,7 @@ func TestDownloadBackwardsCompatibleCombined(t *testing.T) {
 		return res, nil
 	}}
 
-	c, err := beacon.NewClient("http://localhost:3500", client.WithRoundTripper(trans))
+	c, err := NewClient("http://localhost:3500", client.WithRoundTripper(trans))
 	require.NoError(t, err)
 
 	wsPub, err := ComputeWeakSubjectivityCheckpoint(ctx, c)
@@ -267,13 +308,13 @@ func TestGetWeakSubjectivityEpochFromHead(t *testing.T) {
 	require.NoError(t, err)
 	trans := &testRT{rt: func(req *http.Request) (*http.Response, error) {
 		res := &http.Response{Request: req}
-		if req.URL.Path == beacon.RenderGetStatePath(beacon.IdHead) {
+		if req.URL.Path == renderGetStatePath(IdHead) {
 			res.StatusCode = http.StatusOK
 			res.Body = io.NopCloser(bytes.NewBuffer(serialized))
 		}
 		return res, nil
 	}}
-	c, err := beacon.NewClient("http://localhost:3500", client.WithRoundTripper(trans))
+	c, err := NewClient("http://localhost:3500", client.WithRoundTripper(trans))
 	require.NoError(t, err)
 	actualEpoch, err := getWeakSubjectivityEpochFromHead(context.Background(), c)
 	require.NoError(t, err)
@@ -345,3 +386,96 @@ func populateValidators(cfg *params.BeaconChainConfig, st state.BeaconState, val
 	}
 	return st.SetBalances(balances)
 }
+
+func TestDownloadFinalizedData(t *testing.T) {
+	ctx := context.Background()
+	cfg := params.MainnetConfig().Copy()
+
+	// avoid the altair zone because genesis tests are easier to set up
+	epoch := cfg.AltairForkEpoch - 1
+	// set up checkpoint state, using the epoch that will be computed as the ws checkpoint state based on the head state
+	slot, err := slots.EpochStart(epoch)
+	require.NoError(t, err)
+	st, err := util.NewBeaconState()
+	require.NoError(t, err)
+	fork, err := forkForEpoch(cfg, epoch)
+	require.NoError(t, err)
+	require.NoError(t, st.SetFork(fork))
+	require.NoError(t, st.SetSlot(slot))
+
+	// set up checkpoint block
+	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
+	require.NoError(t, err)
+	b, err = blocktest.SetBlockParentRoot(b, cfg.ZeroHash)
+	require.NoError(t, err)
+	b, err = blocktest.SetBlockSlot(b, slot)
+	require.NoError(t, err)
+	b, err = blocktest.SetProposerIndex(b, 0)
+	require.NoError(t, err)
+
+	// set up state header pointing at checkpoint block - this is how the block is downloaded by root
+	header, err := b.Header()
+	require.NoError(t, err)
+	require.NoError(t, st.SetLatestBlockHeader(header.Header))
+
+	// order of operations can be confusing here:
+	// - when computing the state root, make sure block header is complete, EXCEPT the state root should be zero-value
+	// - before computing the block root (to match the request route), the block should include the state root
+	//   *computed from the state with a header that does not have a state root set yet*
+	sr, err := st.HashTreeRoot(ctx)
+	require.NoError(t, err)
+
+	b, err = blocktest.SetBlockStateRoot(b, sr)
+	require.NoError(t, err)
+	mb, err := b.MarshalSSZ()
+	require.NoError(t, err)
+	br, err := b.Block().HashTreeRoot()
+	require.NoError(t, err)
+
+	ms, err := st.MarshalSSZ()
+	require.NoError(t, err)
+
+	trans := &testRT{rt: func(req *http.Request) (*http.Response, error) {
+		res := &http.Response{Request: req}
+		switch req.URL.Path {
+		case renderGetStatePath(IdFinalized):
+			res.StatusCode = http.StatusOK
+			res.Body = io.NopCloser(bytes.NewBuffer(ms))
+		case renderGetBlockPath(IdFromSlot(b.Block().Slot())):
+			res.StatusCode = http.StatusOK
+			res.Body = io.NopCloser(bytes.NewBuffer(mb))
+		default:
+			res.StatusCode = http.StatusInternalServerError
+			res.Body = io.NopCloser(bytes.NewBufferString(""))
+		}
+
+		return res, nil
+	}}
+	c, err := NewClient("http://localhost:3500", client.WithRoundTripper(trans))
+	require.NoError(t, err)
+	// sanity check before we go through checkpoint
+	// make sure we can download the state and unmarshal it with the VersionedUnmarshaler
+	sb, err := c.GetState(ctx, IdFinalized)
+	require.NoError(t, err)
+	require.Equal(t, true, bytes.Equal(sb, ms))
+	vu, err := detect.FromState(sb)
+	require.NoError(t, err)
+	us, err := vu.UnmarshalBeaconState(sb)
+	require.NoError(t, err)
+	ushtr, err := us.HashTreeRoot(ctx)
+	require.NoError(t, err)
+	require.Equal(t, sr, ushtr)
+
+	expected := &OriginData{
+		sb: ms,
+		bb: mb,
+		br: br,
+		sr: sr,
+	}
+	od, err := DownloadFinalizedData(ctx, c)
+	require.NoError(t, err)
+	require.Equal(t, true, bytes.Equal(expected.sb, od.sb))
+	require.Equal(t, true, bytes.Equal(expected.bb, od.bb))
+	require.Equal(t, expected.br, od.br)
+	require.Equal(t, expected.sr, od.sr)
+}

api/client/beacon/client.go

@@ -29,13 +29,12 @@ const (
 	getSignedBlockPath       = "/eth/v2/beacon/blocks"
 	getBlockRootPath         = "/eth/v1/beacon/blocks/{{.Id}}/root"
 	getForkForStatePath      = "/eth/v1/beacon/states/{{.Id}}/fork"
+	getWeakSubjectivityPath  = "/prysm/v1/beacon/weak_subjectivity"
 	getForkSchedulePath      = "/eth/v1/config/fork_schedule"
 	getConfigSpecPath        = "/eth/v1/config/spec"
 	getStatePath             = "/eth/v2/debug/beacon/states"
+	getNodeVersionPath       = "/eth/v1/node/version"
 	changeBLStoExecutionPath = "/eth/v1/beacon/pool/bls_to_execution_changes"
-
-	GetNodeVersionPath      = "/eth/v1/node/version"
-	GetWeakSubjectivityPath = "/prysm/v1/beacon/weak_subjectivity"
 )
 
 // StateOrBlockId represents the block_id / state_id parameters that several of the Eth Beacon API methods accept.
@@ -81,8 +80,7 @@ func idTemplate(ts string) func(StateOrBlockId) string {
 	return f
 }
 
-// RenderGetBlockPath formats a block id into a path for the GetBlock API endpoint.
-func RenderGetBlockPath(id StateOrBlockId) string {
+func renderGetBlockPath(id StateOrBlockId) string {
 	return path.Join(getSignedBlockPath, string(id))
 }
 
@@ -106,7 +104,7 @@ func NewClient(host string, opts ...client.ClientOpt) (*Client, error) {
 // for the named identifiers.
 // The return value contains the ssz-encoded bytes.
 func (c *Client) GetBlock(ctx context.Context, blockId StateOrBlockId) ([]byte, error) {
-	blockPath := RenderGetBlockPath(blockId)
+	blockPath := renderGetBlockPath(blockId)
 	b, err := c.Get(ctx, blockPath, client.WithSSZEncoding())
 	if err != nil {
 		return nil, errors.Wrapf(err, "error requesting state by id = %s", blockId)
@@ -197,10 +195,6 @@ type NodeVersion struct {
 	systemInfo     string
 }
 
-func (nv *NodeVersion) SetImplementation(impl string) {
-	nv.implementation = impl
-}
-
 var versionRE = regexp.MustCompile(`^(\w+)/(v\d+\.\d+\.\d+[-a-zA-Z0-9]*)\s*/?(.*)$`)
 
 func parseNodeVersion(v string) (*NodeVersion, error) {
@@ -218,7 +212,7 @@ func parseNodeVersion(v string) (*NodeVersion, error) {
 // GetNodeVersion requests that the beacon node identify information about its implementation in a format
 // similar to a HTTP User-Agent field. ex: Lighthouse/v0.1.5 (Linux x86_64)
 func (c *Client) GetNodeVersion(ctx context.Context) (*NodeVersion, error) {
-	b, err := c.Get(ctx, GetNodeVersionPath)
+	b, err := c.Get(ctx, getNodeVersionPath)
 	if err != nil {
 		return nil, errors.Wrap(err, "error requesting node version")
 	}
@@ -234,8 +228,7 @@ func (c *Client) GetNodeVersion(ctx context.Context) (*NodeVersion, error) {
 	return parseNodeVersion(d.Data.Version)
 }
 
-// RenderGetStatePath formats a state id into a path for the GetState API endpoint.
-func RenderGetStatePath(id StateOrBlockId) string {
+func renderGetStatePath(id StateOrBlockId) string {
 	return path.Join(getStatePath, string(id))
 }
 
@@ -253,29 +246,13 @@ func (c *Client) GetState(ctx context.Context, stateId StateOrBlockId) ([]byte,
 	return b, nil
 }
 
-// WeakSubjectivityData represents the state root, block root and epoch of the BeaconState + ReadOnlySignedBeaconBlock
-// that falls at the beginning of the current weak subjectivity period. These values can be used to construct
-// a weak subjectivity checkpoint beacon node flag to be used for validation.
-type WeakSubjectivityData struct {
-	BlockRoot [32]byte
-	StateRoot [32]byte
-	Epoch     primitives.Epoch
-}
-
-// CheckpointString returns the standard string representation of a Checkpoint.
-// The format is a hex-encoded block root, followed by the epoch of the block, separated by a colon. For example:
-// "0x1c35540cac127315fabb6bf29181f2ae0de1a3fc909d2e76ba771e61312cc49a:74888"
-func (wsd *WeakSubjectivityData) CheckpointString() string {
-	return fmt.Sprintf("%#x:%d", wsd.BlockRoot, wsd.Epoch)
-}
-
 // GetWeakSubjectivity calls a proposed API endpoint that is unique to prysm
 // This api method does the following:
 // - computes weak subjectivity epoch
 // - finds the highest non-skipped block preceding the epoch
 // - returns the htr of the found block and returns this + the value of state_root from the block
 func (c *Client) GetWeakSubjectivity(ctx context.Context) (*WeakSubjectivityData, error) {
-	body, err := c.Get(ctx, GetWeakSubjectivityPath)
+	body, err := c.Get(ctx, getWeakSubjectivityPath)
 	if err != nil {
 		return nil, err
 	}

api/client/beacon/client_test.go

@@ -97,31 +97,31 @@ func TestValidHostname(t *testing.T) {
 		{
 			name:    "hostname with port",
 			hostArg: "mydomain.org:3500",
-			path:    GetNodeVersionPath,
+			path:    getNodeVersionPath,
 			joined:  "http://mydomain.org:3500/eth/v1/node/version",
 		},
 		{
 			name:    "https scheme, hostname with port",
 			hostArg: "https://mydomain.org:3500",
-			path:    GetNodeVersionPath,
+			path:    getNodeVersionPath,
 			joined:  "https://mydomain.org:3500/eth/v1/node/version",
 		},
 		{
 			name:    "http scheme, hostname without port",
 			hostArg: "http://mydomain.org",
-			path:    GetNodeVersionPath,
+			path:    getNodeVersionPath,
 			joined:  "http://mydomain.org/eth/v1/node/version",
 		},
 		{
 			name:    "http scheme, trailing slash, hostname without port",
 			hostArg: "http://mydomain.org/",
-			path:    GetNodeVersionPath,
+			path:    getNodeVersionPath,
 			joined:  "http://mydomain.org/eth/v1/node/version",
 		},
 		{
 			name:    "http scheme, hostname with basic auth creds and no port",
 			hostArg: "http://username:pass@mydomain.org/",
-			path:    GetNodeVersionPath,
+			path:    getNodeVersionPath,
 			joined:  "http://username:pass@mydomain.org/eth/v1/node/version",
 		},
 	}

api/client/builder/BUILD.bazel

@@ -12,11 +12,8 @@ go_library(
     visibility = ["//visibility:public"],
     deps = [
         "//api:go_default_library",
-        "//api/client:go_default_library",
-        "//api/server:go_default_library",
         "//api/server/structs:go_default_library",
         "//config/fieldparams:go_default_library",
-        "//config/params:go_default_library",
         "//consensus-types:go_default_library",
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/interfaces:go_default_library",
@@ -28,12 +25,10 @@ go_library(
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//runtime/version:go_default_library",
-        "@com_github_ethereum_go_ethereum//common:go_default_library",
         "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prysmaticlabs_fastssz//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
-        "@io_opentelemetry_go_contrib_instrumentation_net_http_otelhttp//:go_default_library",
         "@org_golang_google_protobuf//proto:go_default_library",
     ],
 )
@@ -47,7 +42,6 @@ go_test(
     data = glob(["testdata/**"]),
     embed = [":go_default_library"],
     deps = [
-        "//api:go_default_library",
         "//api/server/structs:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",

api/client/builder/bid.go

@@ -1,12 +1,12 @@
 package builder
 
 import (
+	"github.com/pkg/errors"
 	ssz "github.com/prysmaticlabs/fastssz"
 	consensus_types "github.com/prysmaticlabs/prysm/v5/consensus-types"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
-	v1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 )
@@ -22,6 +22,7 @@ type SignedBid interface {
 // Bid is an interface describing the method set of a builder bid.
 type Bid interface {
 	Header() (interfaces.ExecutionData, error)
+	BlobKzgCommitments() ([][]byte, error)
 	Value() primitives.Wei
 	Pubkey() []byte
 	Version() int
@@ -30,18 +31,6 @@ type Bid interface {
 	HashTreeRootWith(hh *ssz.Hasher) error
 }
 
-// BidDeneb is an interface that exposes newly added kzg commitments on top of builder bid
-type BidDeneb interface {
-	Bid
-	BlobKzgCommitments() [][]byte
-}
-
-// BidElectra is an interface that exposes the newly added execution requests on top of the builder bid
-type BidElectra interface {
-	BidDeneb
-	ExecutionRequests() *v1.ExecutionRequests
-}
-
 type signedBuilderBid struct {
 	p *ethpb.SignedBuilderBid
 }
@@ -126,6 +115,11 @@ func (b builderBid) Header() (interfaces.ExecutionData, error) {
 	return blocks.WrappedExecutionPayloadHeader(b.p.Header)
 }
 
+// BlobKzgCommitments --
+func (b builderBid) BlobKzgCommitments() ([][]byte, error) {
+	return [][]byte{}, errors.New("blob kzg commitments not available before Deneb")
+}
+
 // Version --
 func (b builderBid) Version() int {
 	return version.Bellatrix
@@ -175,6 +169,11 @@ func (b builderBidCapella) Header() (interfaces.ExecutionData, error) {
 	return blocks.WrappedExecutionPayloadHeaderCapella(b.p.Header)
 }
 
+// BlobKzgCommitments --
+func (b builderBidCapella) BlobKzgCommitments() ([][]byte, error) {
+	return [][]byte{}, errors.New("blob kzg commitments not available before Deneb")
+}
+
 // Version --
 func (b builderBidCapella) Version() int {
 	return version.Capella
@@ -255,8 +254,8 @@ func (b builderBidDeneb) Header() (interfaces.ExecutionData, error) {
 }
 
 // BlobKzgCommitments --
-func (b builderBidDeneb) BlobKzgCommitments() [][]byte {
-	return b.p.BlobKzgCommitments
+func (b builderBidDeneb) BlobKzgCommitments() ([][]byte, error) {
+	return b.p.BlobKzgCommitments, nil
 }
 
 type signedBuilderBidDeneb struct {
@@ -291,95 +290,3 @@ func (b signedBuilderBidDeneb) Version() int {
 func (b signedBuilderBidDeneb) IsNil() bool {
 	return b.p == nil
 }
-
-type builderBidElectra struct {
-	p *ethpb.BuilderBidElectra
-}
-
-// WrappedBuilderBidElectra is a constructor which wraps a protobuf bid into an interface.
-func WrappedBuilderBidElectra(p *ethpb.BuilderBidElectra) (Bid, error) {
-	w := builderBidElectra{p: p}
-	if w.IsNil() {
-		return nil, consensus_types.ErrNilObjectWrapped
-	}
-	return w, nil
-}
-
-// Version --
-func (b builderBidElectra) Version() int {
-	return version.Electra
-}
-
-// Value --
-func (b builderBidElectra) Value() primitives.Wei {
-	return primitives.LittleEndianBytesToWei(b.p.Value)
-}
-
-// Pubkey --
-func (b builderBidElectra) Pubkey() []byte {
-	return b.p.Pubkey
-}
-
-// IsNil --
-func (b builderBidElectra) IsNil() bool {
-	return b.p == nil
-}
-
-// HashTreeRoot --
-func (b builderBidElectra) HashTreeRoot() ([32]byte, error) {
-	return b.p.HashTreeRoot()
-}
-
-// HashTreeRootWith --
-func (b builderBidElectra) HashTreeRootWith(hh *ssz.Hasher) error {
-	return b.p.HashTreeRootWith(hh)
-}
-
-// Header --
-func (b builderBidElectra) Header() (interfaces.ExecutionData, error) {
-	// We have to convert big endian to little endian because the value is coming from the execution layer.
-	return blocks.WrappedExecutionPayloadHeaderDeneb(b.p.Header)
-}
-
-// ExecutionRequests --
-func (b builderBidElectra) ExecutionRequests() *v1.ExecutionRequests {
-	return b.p.ExecutionRequests // does not copy
-}
-
-// BlobKzgCommitments --
-func (b builderBidElectra) BlobKzgCommitments() [][]byte {
-	return b.p.BlobKzgCommitments
-}
-
-type signedBuilderBidElectra struct {
-	p *ethpb.SignedBuilderBidElectra
-}
-
-// WrappedSignedBuilderBidElectra is a constructor which wraps a protobuf signed bit into an interface.
-func WrappedSignedBuilderBidElectra(p *ethpb.SignedBuilderBidElectra) (SignedBid, error) {
-	w := signedBuilderBidElectra{p: p}
-	if w.IsNil() {
-		return nil, consensus_types.ErrNilObjectWrapped
-	}
-	return w, nil
-}
-
-// Message --
-func (b signedBuilderBidElectra) Message() (Bid, error) {
-	return WrappedBuilderBidElectra(b.p.Message)
-}
-
-// Signature --
-func (b signedBuilderBidElectra) Signature() []byte {
-	return b.p.Signature
-}
-
-// Version --
-func (b signedBuilderBidElectra) Version() int {
-	return version.Electra
-}
-
-// IsNil --
-func (b signedBuilderBidElectra) IsNil() bool {
-	return b.p == nil
-}

api/client/builder/client.go

@@ -14,7 +14,6 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/api"
-	"github.com/prysmaticlabs/prysm/v5/api/client"
 	"github.com/prysmaticlabs/prysm/v5/api/server/structs"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
@@ -25,7 +24,6 @@ import (
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	log "github.com/sirupsen/logrus"
-	"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
 )
 
 const (
@@ -109,7 +107,7 @@ func NewClient(host string, opts ...ClientOpt) (*Client, error) {
 		return nil, err
 	}
 	c := &Client{
-		hc:      &http.Client{Transport: otelhttp.NewTransport(http.DefaultTransport)},
+		hc:      &http.Client{},
 		baseURL: u,
 	}
 	for _, o := range opts {
@@ -148,17 +146,13 @@ func (c *Client) do(ctx context.Context, method string, path string, body io.Rea
 
 	u := c.baseURL.ResolveReference(&url.URL{Path: path})
 
-	span.SetAttributes(trace.StringAttribute("url", u.String()),
+	span.AddAttributes(trace.StringAttribute("url", u.String()),
 		trace.StringAttribute("method", method))
 
 	req, err := http.NewRequestWithContext(ctx, method, u.String(), body)
 	if err != nil {
 		return
 	}
-	if method == http.MethodPost {
-		req.Header.Set("Content-Type", api.JsonMediaType)
-	}
-	req.Header.Set("Accept", api.JsonMediaType)
 	req.Header.Add("User-Agent", version.BuildData())
 	for _, o := range opts {
 		o(req)
@@ -182,7 +176,7 @@ func (c *Client) do(ctx context.Context, method string, path string, body io.Rea
 		err = non200Err(r)
 		return
 	}
-	res, err = io.ReadAll(io.LimitReader(r.Body, client.MaxBodySize))
+	res, err = io.ReadAll(r.Body)
 	if err != nil {
 		err = errors.Wrap(err, "error reading http response body from builder server")
 		return
@@ -224,23 +218,8 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash
 	if err := json.Unmarshal(hb, v); err != nil {
 		return nil, errors.Wrapf(err, "error unmarshaling the builder GetHeader response, using slot=%d, parentHash=%#x, pubkey=%#x", slot, parentHash, pubkey)
 	}
-
-	ver, err := version.FromString(strings.ToLower(v.Version))
-	if err != nil {
-		return nil, errors.Wrap(err, fmt.Sprintf("unsupported header version %s", strings.ToLower(v.Version)))
-	}
-	if ver >= version.Electra {
-		hr := &ExecHeaderResponseElectra{}
-		if err := json.Unmarshal(hb, hr); err != nil {
-			return nil, errors.Wrapf(err, "error unmarshaling the builder GetHeader response, using slot=%d, parentHash=%#x, pubkey=%#x", slot, parentHash, pubkey)
-		}
-		p, err := hr.ToProto()
-		if err != nil {
-			return nil, errors.Wrapf(err, "could not extract proto message from header")
-		}
-		return WrappedSignedBuilderBidElectra(p)
-	}
-	if ver >= version.Deneb {
+	switch strings.ToLower(v.Version) {
+	case strings.ToLower(version.String(version.Deneb)):
 		hr := &ExecHeaderResponseDeneb{}
 		if err := json.Unmarshal(hb, hr); err != nil {
 			return nil, errors.Wrapf(err, "error unmarshaling the builder GetHeader response, using slot=%d, parentHash=%#x, pubkey=%#x", slot, parentHash, pubkey)
@@ -250,8 +229,7 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash
 			return nil, errors.Wrapf(err, "could not extract proto message from header")
 		}
 		return WrappedSignedBuilderBidDeneb(p)
-	}
-	if ver >= version.Capella {
+	case strings.ToLower(version.String(version.Capella)):
 		hr := &ExecHeaderResponseCapella{}
 		if err := json.Unmarshal(hb, hr); err != nil {
 			return nil, errors.Wrapf(err, "error unmarshaling the builder GetHeader response, using slot=%d, parentHash=%#x, pubkey=%#x", slot, parentHash, pubkey)
@@ -261,8 +239,7 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash
 			return nil, errors.Wrapf(err, "could not extract proto message from header")
 		}
 		return WrappedSignedBuilderBidCapella(p)
-	}
-	if ver >= version.Bellatrix {
+	case strings.ToLower(version.String(version.Bellatrix)):
 		hr := &ExecHeaderResponse{}
 		if err := json.Unmarshal(hb, hr); err != nil {
 			return nil, errors.Wrapf(err, "error unmarshaling the builder GetHeader response, using slot=%d, parentHash=%#x, pubkey=%#x", slot, parentHash, pubkey)
@@ -272,8 +249,9 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash
 			return nil, errors.Wrap(err, "could not extract proto message from header")
 		}
 		return WrappedSignedBuilderBid(p)
+	default:
+		return nil, fmt.Errorf("unsupported header version %s", strings.ToLower(v.Version))
 	}
-	return nil, fmt.Errorf("unsupported header version %s", strings.ToLower(v.Version))
 }
 
 // RegisterValidator encodes the SignedValidatorRegistrationV1 message to json (including hex-encoding the byte
@@ -281,7 +259,7 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash
 func (c *Client) RegisterValidator(ctx context.Context, svr []*ethpb.SignedValidatorRegistrationV1) error {
 	ctx, span := trace.StartSpan(ctx, "builder.client.RegisterValidator")
 	defer span.End()
-	span.SetAttributes(trace.Int64Attribute("num_reqs", int64(len(svr))))
+	span.AddAttributes(trace.Int64Attribute("num_reqs", int64(len(svr))))
 
 	if len(svr) == 0 {
 		err := errors.Wrap(errMalformedRequest, "empty validator registration list")
@@ -300,11 +278,7 @@ func (c *Client) RegisterValidator(ctx context.Context, svr []*ethpb.SignedValid
 	}
 
 	_, err = c.do(ctx, http.MethodPost, postRegisterValidatorPath, bytes.NewBuffer(body))
-	if err != nil {
-		return err
-	}
-	log.WithField("registrationCount", len(svr)).Debug("Successfully registered validator(s) on builder")
-	return nil
+	return err
 }
 
 var errResponseVersionMismatch = errors.New("builder API response uses a different version than requested in " + api.VersionHeader + " header")
@@ -380,7 +354,7 @@ func (c *Client) Status(ctx context.Context) error {
 }
 
 func non200Err(response *http.Response) error {
-	bodyBytes, err := io.ReadAll(io.LimitReader(response.Body, client.MaxErrBodySize))
+	bodyBytes, err := io.ReadAll(response.Body)
 	var errMessage ErrorMessage
 	var body string
 	if err != nil {

api/client/builder/client_test.go

@@ -12,11 +12,11 @@ import (
 	"testing"
 
 	"github.com/prysmaticlabs/go-bitfield"
-	"github.com/prysmaticlabs/prysm/v5/api"
 	"github.com/prysmaticlabs/prysm/v5/api/server/structs"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	types "github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	v1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
@@ -90,8 +90,6 @@ func TestClient_RegisterValidator(t *testing.T) {
 	expectedPath := "/eth/v1/builder/validators"
 	hc := &http.Client{
 		Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-			require.Equal(t, api.JsonMediaType, r.Header.Get("Content-Type"))
-			require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
 			body, err := io.ReadAll(r.Body)
 			defer func() {
 				require.NoError(t, r.Body.Close())
@@ -126,7 +124,7 @@ func TestClient_RegisterValidator(t *testing.T) {
 func TestClient_GetHeader(t *testing.T) {
 	ctx := context.Background()
 	expectedPath := "/eth/v1/builder/header/23/0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2/0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
-	var slot primitives.Slot = 23
+	var slot types.Slot = 23
 	parentHash := ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
 	pubkey := ezDecode(t, "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a")
 	t.Run("server error", func(t *testing.T) {
@@ -269,9 +267,9 @@ func TestClient_GetHeader(t *testing.T) {
 		require.NoError(t, err)
 		require.Equal(t, 0, value.Int.Cmp(primitives.WeiToBigInt(bid.Value())))
 		require.Equal(t, bidStr, primitives.WeiToBigInt(bid.Value()).String())
-		dbid, ok := bid.(builderBidDeneb)
-		require.Equal(t, true, ok)
-		kcgCommitments := dbid.BlobKzgCommitments()
+
+		kcgCommitments, err := bid.BlobKzgCommitments()
+		require.NoError(t, err)
 		require.Equal(t, len(kcgCommitments) > 0, true)
 		for i := range kcgCommitments {
 			require.Equal(t, len(kcgCommitments[i]) == 48, true)
@@ -295,50 +293,6 @@ func TestClient_GetHeader(t *testing.T) {
 		_, err := c.GetHeader(ctx, slot, bytesutil.ToBytes32(parentHash), bytesutil.ToBytes48(pubkey))
 		require.ErrorContains(t, "could not extract proto message from header: too many blob commitments: 7", err)
 	})
-	t.Run("electra", func(t *testing.T) {
-		hc := &http.Client{
-			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-				require.Equal(t, expectedPath, r.URL.Path)
-				return &http.Response{
-					StatusCode: http.StatusOK,
-					Body:       io.NopCloser(bytes.NewBufferString(testExampleHeaderResponseElectra)),
-					Request:    r.Clone(ctx),
-				}, nil
-			}),
-		}
-		c := &Client{
-			hc:      hc,
-			baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
-		}
-		h, err := c.GetHeader(ctx, slot, bytesutil.ToBytes32(parentHash), bytesutil.ToBytes48(pubkey))
-		require.NoError(t, err)
-		expectedWithdrawalsRoot := ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
-		bid, err := h.Message()
-		require.NoError(t, err)
-		bidHeader, err := bid.Header()
-		require.NoError(t, err)
-		withdrawalsRoot, err := bidHeader.WithdrawalsRoot()
-		require.NoError(t, err)
-		require.Equal(t, true, bytes.Equal(expectedWithdrawalsRoot, withdrawalsRoot))
-
-		bidStr := "652312848583266388373324160190187140051835877600158453279131187530910662656"
-		value, err := stringToUint256(bidStr)
-		require.NoError(t, err)
-		require.Equal(t, 0, value.Int.Cmp(primitives.WeiToBigInt(bid.Value())))
-		require.Equal(t, bidStr, primitives.WeiToBigInt(bid.Value()).String())
-		ebid, ok := bid.(builderBidElectra)
-		require.Equal(t, true, ok)
-		kcgCommitments := ebid.BlobKzgCommitments()
-		require.Equal(t, len(kcgCommitments) > 0, true)
-		for i := range kcgCommitments {
-			require.Equal(t, len(kcgCommitments[i]) == 48, true)
-		}
-		requests := ebid.ExecutionRequests()
-		require.Equal(t, 1, len(requests.Deposits))
-		require.Equal(t, 1, len(requests.Withdrawals))
-		require.Equal(t, 1, len(requests.Consolidations))
-
-	})
 	t.Run("unsupported version", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
@@ -367,8 +321,8 @@ func TestSubmitBlindedBlock(t *testing.T) {
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
 				require.Equal(t, "bellatrix", r.Header.Get("Eth-Consensus-Version"))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "application/json", r.Header.Get("Content-Type"))
+				require.Equal(t, "application/json", r.Header.Get("Accept"))
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Body:       io.NopCloser(bytes.NewBufferString(testExampleExecutionPayload)),
@@ -395,8 +349,8 @@ func TestSubmitBlindedBlock(t *testing.T) {
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
 				require.Equal(t, "capella", r.Header.Get("Eth-Consensus-Version"))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "application/json", r.Header.Get("Content-Type"))
+				require.Equal(t, "application/json", r.Header.Get("Accept"))
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Body:       io.NopCloser(bytes.NewBufferString(testExampleExecutionPayloadCapella)),
@@ -416,7 +370,7 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		require.NoError(t, err)
 		require.Equal(t, 1, len(withdrawals))
 		assert.Equal(t, uint64(1), withdrawals[0].Index)
-		assert.Equal(t, primitives.ValidatorIndex(1), withdrawals[0].ValidatorIndex)
+		assert.Equal(t, types.ValidatorIndex(1), withdrawals[0].ValidatorIndex)
 		assert.DeepEqual(t, ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943"), withdrawals[0].Address)
 		assert.Equal(t, uint64(1), withdrawals[0].Amount)
 	})
@@ -426,8 +380,8 @@ func TestSubmitBlindedBlock(t *testing.T) {
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
 				require.Equal(t, "deneb", r.Header.Get("Eth-Consensus-Version"))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "application/json", r.Header.Get("Content-Type"))
+				require.Equal(t, "application/json", r.Header.Get("Accept"))
 				var req structs.SignedBlindedBeaconBlockDeneb
 				err := json.NewDecoder(r.Body).Decode(&req)
 				require.NoError(t, err)
@@ -455,7 +409,7 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		require.NoError(t, err)
 		require.Equal(t, 1, len(withdrawals))
 		assert.Equal(t, uint64(1), withdrawals[0].Index)
-		assert.Equal(t, primitives.ValidatorIndex(1), withdrawals[0].ValidatorIndex)
+		assert.Equal(t, types.ValidatorIndex(1), withdrawals[0].ValidatorIndex)
 		assert.DeepEqual(t, ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943"), withdrawals[0].Address)
 		assert.Equal(t, uint64(1), withdrawals[0].Amount)
 		require.NotNil(t, blobBundle)

api/client/builder/types.go

@@ -5,15 +5,12 @@ import (
 	"fmt"
 	"math/big"
 	"strconv"
-	"strings"
 
-	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/pkg/errors"
-	"github.com/prysmaticlabs/prysm/v5/api/server"
 	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
-	"github.com/prysmaticlabs/prysm/v5/config/params"
 	consensusblocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/v5/math"
@@ -416,10 +413,54 @@ func FromProtoDeneb(payload *v1.ExecutionPayloadDeneb) (ExecutionPayloadDeneb, e
 	}, nil
 }
 
+var errInvalidTypeConversion = errors.New("unable to translate between api and foreign type")
+
+// ExecutionPayloadResponseFromData converts an ExecutionData interface value to a payload response.
+// This involves serializing the execution payload value so that the abstract payload envelope can be used.
+func ExecutionPayloadResponseFromData(ed interfaces.ExecutionData, bundle *v1.BlobsBundle) (*ExecutionPayloadResponse, error) {
+	pb := ed.Proto()
+	var data interface{}
+	var err error
+	var ver string
+	switch pbStruct := pb.(type) {
+	case *v1.ExecutionPayload:
+		ver = version.String(version.Bellatrix)
+		data, err = FromProto(pbStruct)
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to convert a Bellatrix ExecutionPayload to an API response")
+		}
+	case *v1.ExecutionPayloadCapella:
+		ver = version.String(version.Capella)
+		data, err = FromProtoCapella(pbStruct)
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to convert a Capella ExecutionPayload to an API response")
+		}
+	case *v1.ExecutionPayloadDeneb:
+		ver = version.String(version.Deneb)
+		payloadStruct, err := FromProtoDeneb(pbStruct)
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to convert a Deneb ExecutionPayload to an API response")
+		}
+		data = &ExecutionPayloadDenebAndBlobsBundle{
+			ExecutionPayload: &payloadStruct,
+			BlobsBundle:      FromBundleProto(bundle),
+		}
+	default:
+		return nil, errInvalidTypeConversion
+	}
+	encoded, err := json.Marshal(data)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to marshal execution payload version=%s", ver)
+	}
+	return &ExecutionPayloadResponse{
+		Version: ver,
+		Data:    encoded,
+	}, nil
+}
+
 // ExecHeaderResponseCapella is the response of builder API /eth/v1/builder/header/{slot}/{parent_hash}/{pubkey} for Capella.
 type ExecHeaderResponseCapella struct {
-	Version string `json:"version"`
-	Data    struct {
+	Data struct {
 		Signature hexutil.Bytes      `json:"signature"`
 		Message   *BuilderBidCapella `json:"message"`
 	} `json:"data"`
@@ -563,25 +604,17 @@ type BlobBundler interface {
 	BundleProto() (*v1.BlobsBundle, error)
 }
 
-// ParsedExecutionRequests can retrieve the underlying execution requests for the given execution payload response.
-type ParsedExecutionRequests interface {
-	ExecutionRequestsProto() (*v1.ExecutionRequests, error)
-}
-
 func (r *ExecutionPayloadResponse) ParsePayload() (ParsedPayload, error) {
 	var toProto ParsedPayload
-	v, err := version.FromString(strings.ToLower(r.Version))
-	if err != nil {
-		return nil, errors.Wrap(err, fmt.Sprintf("unsupported version %s", strings.ToLower(r.Version)))
-	}
-	if v >= version.Deneb {
-		toProto = &ExecutionPayloadDenebAndBlobsBundle{}
-	} else if v >= version.Capella {
-		toProto = &ExecutionPayloadCapella{}
-	} else if v >= version.Bellatrix {
+	switch r.Version {
+	case version.String(version.Bellatrix):
 		toProto = &ExecutionPayload{}
-	} else {
-		return nil, fmt.Errorf("unsupported version %s", strings.ToLower(r.Version))
+	case version.String(version.Capella):
+		toProto = &ExecutionPayloadCapella{}
+	case version.String(version.Deneb):
+		toProto = &ExecutionPayloadDenebAndBlobsBundle{}
+	default:
+		return nil, consensusblocks.ErrUnsupportedVersion
 	}
 
 	if err := json.Unmarshal(r.Data, toProto); err != nil {
@@ -956,8 +989,7 @@ func (ch *BLSToExecutionChange) MarshalJSON() ([]byte, error) {
 
 // ExecHeaderResponseDeneb is the header response for builder API /eth/v1/builder/header/{slot}/{parent_hash}/{pubkey}.
 type ExecHeaderResponseDeneb struct {
-	Version string `json:"version"`
-	Data    struct {
+	Data struct {
 		Signature hexutil.Bytes    `json:"signature"`
 		Message   *BuilderBidDeneb `json:"message"`
 	} `json:"data"`
@@ -981,7 +1013,7 @@ func (bb *BuilderBidDeneb) ToProto() (*eth.BuilderBidDeneb, error) {
 	if err != nil {
 		return nil, err
 	}
-	if len(bb.BlobKzgCommitments) > params.BeaconConfig().DeprecatedMaxBlobsPerBlock {
+	if len(bb.BlobKzgCommitments) > fieldparams.MaxBlobsPerBlock {
 		return nil, fmt.Errorf("too many blob commitments: %d", len(bb.BlobKzgCommitments))
 	}
 	kzgCommitments := make([][]byte, len(bb.BlobKzgCommitments))
@@ -1274,208 +1306,6 @@ func (p *ExecutionPayloadDeneb) ToProto() (*v1.ExecutionPayloadDeneb, error) {
 	}, nil
 }
 
-// ExecHeaderResponseElectra is the header response for builder API /eth/v1/builder/header/{slot}/{parent_hash}/{pubkey}.
-type ExecHeaderResponseElectra struct {
-	Version string `json:"version"`
-	Data    struct {
-		Signature hexutil.Bytes      `json:"signature"`
-		Message   *BuilderBidElectra `json:"message"`
-	} `json:"data"`
-}
-
-// ToProto creates a SignedBuilderBidElectra Proto from ExecHeaderResponseElectra.
-func (ehr *ExecHeaderResponseElectra) ToProto() (*eth.SignedBuilderBidElectra, error) {
-	bb, err := ehr.Data.Message.ToProto()
-	if err != nil {
-		return nil, err
-	}
-	return &eth.SignedBuilderBidElectra{
-		Message:   bb,
-		Signature: bytesutil.SafeCopyBytes(ehr.Data.Signature),
-	}, nil
-}
-
-// ToProto creates a BuilderBidElectra Proto from BuilderBidElectra.
-func (bb *BuilderBidElectra) ToProto() (*eth.BuilderBidElectra, error) {
-	header, err := bb.Header.ToProto()
-	if err != nil {
-		return nil, err
-	}
-	if len(bb.BlobKzgCommitments) > params.BeaconConfig().MaxBlobsPerBlockByVersion(version.Electra) {
-		return nil, fmt.Errorf("blob commitment count %d exceeds the maximum %d", len(bb.BlobKzgCommitments), params.BeaconConfig().MaxBlobsPerBlockByVersion(version.Electra))
-	}
-	kzgCommitments := make([][]byte, len(bb.BlobKzgCommitments))
-	for i, commit := range bb.BlobKzgCommitments {
-		if len(commit) != fieldparams.BLSPubkeyLength {
-			return nil, fmt.Errorf("commitment length %d is not %d", len(commit), fieldparams.BLSPubkeyLength)
-		}
-		kzgCommitments[i] = bytesutil.SafeCopyBytes(commit)
-	}
-	// post electra execution requests should not be nil, if no requests exist use an empty request
-	if bb.ExecutionRequests == nil {
-		return nil, errors.New("bid contains nil execution requests")
-	}
-	executionRequests, err := bb.ExecutionRequests.ToProto()
-	if err != nil {
-		return nil, errors.Wrap(err, "failed to convert ExecutionRequests")
-	}
-	return &eth.BuilderBidElectra{
-		Header:             header,
-		BlobKzgCommitments: kzgCommitments,
-		ExecutionRequests:  executionRequests,
-		// Note that SSZBytes() reverses byte order for the little-endian representation.
-		// Uint256.Bytes() is big-endian, SSZBytes takes this value and reverses it.
-		Value:  bytesutil.SafeCopyBytes(bb.Value.SSZBytes()),
-		Pubkey: bytesutil.SafeCopyBytes(bb.Pubkey),
-	}, nil
-}
-
-// ExecutionRequestsV1 is a wrapper for different execution requests
-type ExecutionRequestsV1 struct {
-	Deposits       []*DepositRequestV1       `json:"deposits"`
-	Withdrawals    []*WithdrawalRequestV1    `json:"withdrawals"`
-	Consolidations []*ConsolidationRequestV1 `json:"consolidations"`
-}
-
-func (er *ExecutionRequestsV1) ToProto() (*v1.ExecutionRequests, error) {
-	if uint64(len(er.Deposits)) > params.BeaconConfig().MaxDepositRequestsPerPayload {
-		return nil, fmt.Errorf("deposit requests count %d exceeds the maximum %d", len(er.Deposits), params.BeaconConfig().MaxDepositRequestsPerPayload)
-	}
-	deposits := make([]*v1.DepositRequest, len(er.Deposits))
-	for i, dep := range er.Deposits {
-		d, err := dep.ToProto()
-		if err != nil {
-			return nil, err
-		}
-		deposits[i] = d
-	}
-	if uint64(len(er.Withdrawals)) > params.BeaconConfig().MaxWithdrawalRequestsPerPayload {
-		return nil, fmt.Errorf("withdrawal requests count %d exceeds the maximum %d", len(er.Withdrawals), params.BeaconConfig().MaxWithdrawalRequestsPerPayload)
-	}
-	withdrawals := make([]*v1.WithdrawalRequest, len(er.Withdrawals))
-	for i, wr := range er.Withdrawals {
-		w, err := wr.ToProto()
-		if err != nil {
-			return nil, err
-		}
-		withdrawals[i] = w
-	}
-	if uint64(len(er.Consolidations)) > params.BeaconConfig().MaxConsolidationsRequestsPerPayload {
-		return nil, fmt.Errorf("consolidation requests count %d exceeds the maximum %d", len(er.Consolidations), params.BeaconConfig().MaxConsolidationsRequestsPerPayload)
-	}
-	consolidations := make([]*v1.ConsolidationRequest, len(er.Consolidations))
-	for i, con := range er.Consolidations {
-		c, err := con.ToProto()
-		if err != nil {
-			return nil, err
-		}
-		consolidations[i] = c
-	}
-	return &v1.ExecutionRequests{
-		Deposits:       deposits,
-		Withdrawals:    withdrawals,
-		Consolidations: consolidations,
-	}, nil
-}
-
-// BuilderBidElectra is a field of ExecHeaderResponseElectra.
-type BuilderBidElectra struct {
-	Header             *ExecutionPayloadHeaderDeneb `json:"header"`
-	BlobKzgCommitments []hexutil.Bytes              `json:"blob_kzg_commitments"`
-	ExecutionRequests  *ExecutionRequestsV1         `json:"execution_requests"`
-	Value              Uint256                      `json:"value"`
-	Pubkey             hexutil.Bytes                `json:"pubkey"`
-}
-
-// WithdrawalRequestV1 is a field of ExecutionRequestsV1.
-type WithdrawalRequestV1 struct {
-	SourceAddress   hexutil.Bytes `json:"source_address"`
-	ValidatorPubkey hexutil.Bytes `json:"validator_pubkey"`
-	Amount          Uint256       `json:"amount"`
-}
-
-func (wr *WithdrawalRequestV1) ToProto() (*v1.WithdrawalRequest, error) {
-	srcAddress, err := bytesutil.DecodeHexWithLength(wr.SourceAddress.String(), common.AddressLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "source_address")
-	}
-	pubkey, err := bytesutil.DecodeHexWithLength(wr.ValidatorPubkey.String(), fieldparams.BLSPubkeyLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "validator_pubkey")
-	}
-
-	return &v1.WithdrawalRequest{
-		SourceAddress:   srcAddress,
-		ValidatorPubkey: pubkey,
-		Amount:          wr.Amount.Uint64(),
-	}, nil
-}
-
-// DepositRequestV1 is a field of ExecutionRequestsV1.
-type DepositRequestV1 struct {
-	PubKey hexutil.Bytes `json:"pubkey"`
-	// withdrawalCredentials: DATA, 32 Bytes
-	WithdrawalCredentials hexutil.Bytes `json:"withdrawal_credentials"`
-	// amount: QUANTITY, 64 Bits
-	Amount Uint256 `json:"amount"`
-	// signature: DATA, 96 Bytes
-	Signature hexutil.Bytes `json:"signature"`
-	// index: QUANTITY, 64 Bits
-	Index Uint256 `json:"index"`
-}
-
-func (dr *DepositRequestV1) ToProto() (*v1.DepositRequest, error) {
-	pubkey, err := bytesutil.DecodeHexWithLength(dr.PubKey.String(), fieldparams.BLSPubkeyLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "pubkey")
-	}
-	wc, err := bytesutil.DecodeHexWithLength(dr.WithdrawalCredentials.String(), fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "withdrawal_credentials")
-	}
-	sig, err := bytesutil.DecodeHexWithLength(dr.Signature.String(), fieldparams.BLSSignatureLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "signature")
-	}
-	return &v1.DepositRequest{
-		Pubkey:                pubkey,
-		WithdrawalCredentials: wc,
-		Amount:                dr.Amount.Uint64(),
-		Signature:             sig,
-		Index:                 dr.Index.Uint64(),
-	}, nil
-}
-
-// ConsolidationRequestV1 is a field of ExecutionRequestsV1.
-type ConsolidationRequestV1 struct {
-	// sourceAddress: DATA, 20 Bytes
-	SourceAddress hexutil.Bytes `json:"source_address"`
-	// sourcePubkey: DATA, 48 Bytes
-	SourcePubkey hexutil.Bytes `json:"source_pubkey"`
-	// targetPubkey: DATA, 48 Bytes
-	TargetPubkey hexutil.Bytes `json:"target_pubkey"`
-}
-
-func (cr *ConsolidationRequestV1) ToProto() (*v1.ConsolidationRequest, error) {
-	srcAddress, err := bytesutil.DecodeHexWithLength(cr.SourceAddress.String(), common.AddressLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "source_address")
-	}
-	sourcePubkey, err := bytesutil.DecodeHexWithLength(cr.SourcePubkey.String(), fieldparams.BLSPubkeyLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "source_pubkey")
-	}
-	targetPubkey, err := bytesutil.DecodeHexWithLength(cr.TargetPubkey.String(), fieldparams.BLSPubkeyLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "target_pubkey")
-	}
-	return &v1.ConsolidationRequest{
-		SourceAddress: srcAddress,
-		SourcePubkey:  sourcePubkey,
-		TargetPubkey:  targetPubkey,
-	}, nil
-}
-
 // ErrorMessage is a JSON representation of the builder API's returned error message.
 type ErrorMessage struct {
 	Code        int      `json:"code"`

api/client/builder/types_test.go

@@ -154,64 +154,6 @@ var testExampleHeaderResponseDeneb = `{
   }
 }`
 
-var testExampleHeaderResponseElectra = `{
-  "version": "electra",
-  "data": {
-    "message": {
-      "header": {
-        "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
-        "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
-        "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
-        "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
-        "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
-        "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
-        "block_number": "1",
-        "gas_limit": "1",
-        "gas_used": "1",
-        "timestamp": "1",
-        "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
-        "base_fee_per_gas": "1",
-        "blob_gas_used": "1",
-        "excess_blob_gas": "1",
-        "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
-        "transactions_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
-        "withdrawals_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
-      },
-      "blob_kzg_commitments": [
-        "0xa94170080872584e54a1cf092d845703b13907f2e6b3b1c0ad573b910530499e3bcd48c6378846b80d2bfa58c81cf3d5"
-      ],
-      "execution_requests": {
-        "deposits": [
-          {
-            "pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
-            "withdrawal_credentials": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
-            "amount": "1",
-            "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
-            "index": "1"
-          }
-        ],
-        "withdrawals": [
-          {
-            "source_address": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
-            "validator_pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
-            "amount": "1"
-          }
-        ],
-        "consolidations": [
-          {
-            "source_address": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
-            "source_pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
-            "target_pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
-          }
-        ]
-      },
-      "value": "652312848583266388373324160190187140051835877600158453279131187530910662656",
-      "pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
-    },
-    "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
-  }
-}`
-
 var testExampleHeaderResponseDenebNoBundle = `{
   "version": "deneb",
   "data": {
@@ -1982,9 +1924,9 @@ func TestEmptyResponseBody(t *testing.T) {
 		emptyResponse := &ExecutionPayloadResponse{}
 		require.NoError(t, json.Unmarshal(empty, emptyResponse))
 		_, err := emptyResponse.ParsePayload()
-		require.ErrorContains(t, "unsupported version", err)
+		require.ErrorIs(t, err, consensusblocks.ErrUnsupportedVersion)
 	})
-	versions := []int{version.Bellatrix, version.Capella, version.Deneb, version.Electra}
+	versions := []int{version.Bellatrix, version.Capella, version.Deneb}
 	for i := range versions {
 		vstr := version.String(versions[i])
 		t.Run("populated version without payload"+vstr, func(t *testing.T) {

api/client/client.go

@@ -10,18 +10,11 @@ import (
 	"github.com/pkg/errors"
 )
 
-const (
-	MaxBodySize      int64 = 1 << 23 // 8MB default, WithMaxBodySize can override
-	MaxBodySizeState int64 = 1 << 29 // 512MB
-	MaxErrBodySize   int64 = 1 << 17 // 128KB
-)
-
 // Client is a wrapper object around the HTTP client.
 type Client struct {
-	hc          *http.Client
-	baseURL     *url.URL
-	token       string
-	maxBodySize int64
+	hc      *http.Client
+	baseURL *url.URL
+	token   string
 }
 
 // NewClient constructs a new client with the provided options (ex WithTimeout).
@@ -33,9 +26,8 @@ func NewClient(host string, opts ...ClientOpt) (*Client, error) {
 		return nil, err
 	}
 	c := &Client{
-		hc:          &http.Client{},
-		baseURL:     u,
-		maxBodySize: MaxBodySize,
+		hc:      &http.Client{},
+		baseURL: u,
 	}
 	for _, o := range opts {
 		o(c)
@@ -80,7 +72,7 @@ func (c *Client) NodeURL() string {
 // Get is a generic, opinionated GET function to reduce boilerplate amongst the getters in this package.
 func (c *Client) Get(ctx context.Context, path string, opts ...ReqOption) ([]byte, error) {
 	u := c.baseURL.ResolveReference(&url.URL{Path: path})
-	req, err := http.NewRequestWithContext(ctx, http.MethodGet, u.String(), http.NoBody)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, u.String(), nil)
 	if err != nil {
 		return nil, err
 	}
@@ -97,7 +89,7 @@ func (c *Client) Get(ctx context.Context, path string, opts ...ReqOption) ([]byt
 	if r.StatusCode != http.StatusOK {
 		return nil, Non200Err(r)
 	}
-	b, err := io.ReadAll(io.LimitReader(r.Body, c.maxBodySize))
+	b, err := io.ReadAll(r.Body)
 	if err != nil {
 		return nil, errors.Wrap(err, "error reading http response body")
 	}

api/client/errors.go

@@ -25,16 +25,16 @@ var ErrInvalidNodeVersion = errors.New("invalid node version response")
 var ErrConnectionIssue = errors.New("could not connect")
 
 // Non200Err is a function that parses an HTTP response to handle responses that are not 200 with a formatted error.
-func Non200Err(r *http.Response) error {
-	b, err := io.ReadAll(io.LimitReader(r.Body, MaxErrBodySize))
+func Non200Err(response *http.Response) error {
+	bodyBytes, err := io.ReadAll(response.Body)
 	var body string
 	if err != nil {
 		body = "(Unable to read response body.)"
 	} else {
-		body = "response body:\n" + string(b)
+		body = "response body:\n" + string(bodyBytes)
 	}
-	msg := fmt.Sprintf("code=%d, url=%s, body=%s", r.StatusCode, r.Request.URL, body)
-	switch r.StatusCode {
+	msg := fmt.Sprintf("code=%d, url=%s, body=%s", response.StatusCode, response.Request.URL, body)
+	switch response.StatusCode {
 	case http.StatusNotFound:
 		return errors.Wrap(ErrNotFound, msg)
 	default:

api/client/event/event_stream.go

@@ -93,7 +93,6 @@ func (h *EventStream) Subscribe(eventsChannel chan<- *Event) {
 			EventType: EventConnectionError,
 			Data:      []byte(errors.Wrap(err, client.ErrConnectionIssue.Error()).Error()),
 		}
-		return
 	}
 
 	defer func() {

api/client/event/event_stream_test.go

@@ -40,7 +40,7 @@ func TestNewEventStream(t *testing.T) {
 
 func TestEventStream(t *testing.T) {
 	mux := http.NewServeMux()
-	mux.HandleFunc("/eth/v1/events", func(w http.ResponseWriter, _ *http.Request) {
+	mux.HandleFunc("/eth/v1/events", func(w http.ResponseWriter, r *http.Request) {
 		flusher, ok := w.(http.Flusher)
 		require.Equal(t, true, ok)
 		for i := 1; i <= 3; i++ {
@@ -79,23 +79,3 @@ func TestEventStream(t *testing.T) {
 		}
 	}
 }
-
-func TestEventStreamRequestError(t *testing.T) {
-	topics := []string{"head"}
-	eventsChannel := make(chan *Event, 1)
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	// use valid url that will result in failed request with nil body
-	stream, err := NewEventStream(ctx, http.DefaultClient, "http://badhost:1234", topics)
-	require.NoError(t, err)
-
-	// error will happen when request is made, should be received over events channel
-	go stream.Subscribe(eventsChannel)
-
-	event := <-eventsChannel
-	if event.EventType != EventConnectionError {
-		t.Errorf("Expected event type %q, got %q", EventConnectionError, event.EventType)
-	}
-
-}

api/client/options.go

@@ -46,10 +46,3 @@ func WithAuthenticationToken(token string) ClientOpt {
 		c.token = token
 	}
 }
-
-// WithMaxBodySize overrides the default max body size of 8MB.
-func WithMaxBodySize(size int64) ClientOpt {
-	return func(c *Client) {
-		c.maxBodySize = size
-	}
-}

api/gateway/BUILD.bazel

@@ -0,0 +1,43 @@
+load("@prysm//tools/go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "gateway.go",
+        "log.go",
+        "modifiers.go",
+        "options.go",
+    ],
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/gateway",
+    visibility = [
+        "//beacon-chain:__subpackages__",
+        "//validator:__subpackages__",
+    ],
+    deps = [
+        "//api/server/middleware:go_default_library",
+        "//runtime:go_default_library",
+        "@com_github_gorilla_mux//:go_default_library",
+        "@com_github_grpc_ecosystem_grpc_gateway_v2//runtime:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
+        "@org_golang_google_grpc//:go_default_library",
+        "@org_golang_google_grpc//connectivity:go_default_library",
+        "@org_golang_google_grpc//credentials:go_default_library",
+        "@org_golang_google_grpc//credentials/insecure:go_default_library",
+        "@org_golang_google_protobuf//proto:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["gateway_test.go"],
+    embed = [":go_default_library"],
+    deps = [
+        "//cmd/beacon-chain/flags:go_default_library",
+        "//testing/assert:go_default_library",
+        "//testing/require:go_default_library",
+        "@com_github_gorilla_mux//:go_default_library",
+        "@com_github_sirupsen_logrus//hooks/test:go_default_library",
+        "@com_github_urfave_cli_v2//:go_default_library",
+    ],
+)

api/gateway/gateway.go

@@ -0,0 +1,212 @@
+// Package gateway defines a grpc-gateway server that serves HTTP-JSON traffic and acts a proxy between HTTP and gRPC.
+package gateway
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/gorilla/mux"
+	gwruntime "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/api/server/middleware"
+	"github.com/prysmaticlabs/prysm/v5/runtime"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+var _ runtime.Service = (*Gateway)(nil)
+
+// PbMux serves grpc-gateway requests for selected patterns using registered protobuf handlers.
+type PbMux struct {
+	Registrations []PbHandlerRegistration // Protobuf registrations to be registered in Mux.
+	Patterns      []string                // URL patterns that will be handled by Mux.
+	Mux           *gwruntime.ServeMux     // The router that will be used for grpc-gateway requests.
+}
+
+// PbHandlerRegistration is a function that registers a protobuf handler.
+type PbHandlerRegistration func(context.Context, *gwruntime.ServeMux, *grpc.ClientConn) error
+
+// MuxHandler is a function that implements the mux handler functionality.
+type MuxHandler func(
+	h http.HandlerFunc,
+	w http.ResponseWriter,
+	req *http.Request,
+)
+
+// Config parameters for setting up the gateway service.
+type config struct {
+	maxCallRecvMsgSize uint64
+	remoteCert         string
+	gatewayAddr        string
+	remoteAddr         string
+	allowedOrigins     []string
+	muxHandler         MuxHandler
+	pbHandlers         []*PbMux
+	router             *mux.Router
+	timeout            time.Duration
+}
+
+// Gateway is the gRPC gateway to serve HTTP JSON traffic as a proxy and forward it to the gRPC server.
+type Gateway struct {
+	cfg          *config
+	conn         *grpc.ClientConn
+	server       *http.Server
+	cancel       context.CancelFunc
+	ctx          context.Context
+	startFailure error
+}
+
+// New returns a new instance of the Gateway.
+func New(ctx context.Context, opts ...Option) (*Gateway, error) {
+	g := &Gateway{
+		ctx: ctx,
+		cfg: &config{},
+	}
+	for _, opt := range opts {
+		if err := opt(g); err != nil {
+			return nil, err
+		}
+	}
+	if g.cfg.router == nil {
+		g.cfg.router = mux.NewRouter()
+	}
+	return g, nil
+}
+
+// Start the gateway service.
+func (g *Gateway) Start() {
+	ctx, cancel := context.WithCancel(g.ctx)
+	g.cancel = cancel
+
+	conn, err := g.dial(ctx, "tcp", g.cfg.remoteAddr)
+	if err != nil {
+		log.WithError(err).Error("Failed to connect to gRPC server")
+		g.startFailure = err
+		return
+	}
+	g.conn = conn
+
+	for _, h := range g.cfg.pbHandlers {
+		for _, r := range h.Registrations {
+			if err := r(ctx, h.Mux, g.conn); err != nil {
+				log.WithError(err).Error("Failed to register handler")
+				g.startFailure = err
+				return
+			}
+		}
+		for _, p := range h.Patterns {
+			g.cfg.router.PathPrefix(p).Handler(h.Mux)
+		}
+	}
+
+	corsMux := middleware.CorsHandler(g.cfg.allowedOrigins).Middleware(g.cfg.router)
+
+	if g.cfg.muxHandler != nil {
+		g.cfg.router.PathPrefix("/").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			g.cfg.muxHandler(corsMux.ServeHTTP, w, r)
+		})
+	}
+
+	g.server = &http.Server{
+		Addr:              g.cfg.gatewayAddr,
+		Handler:           corsMux,
+		ReadHeaderTimeout: time.Second,
+	}
+
+	go func() {
+		log.WithField("address", g.cfg.gatewayAddr).Info("Starting gRPC gateway")
+		if err := g.server.ListenAndServe(); err != http.ErrServerClosed {
+			log.WithError(err).Error("Failed to start gRPC gateway")
+			g.startFailure = err
+			return
+		}
+	}()
+}
+
+// Status of grpc gateway. Returns an error if this service is unhealthy.
+func (g *Gateway) Status() error {
+	if g.startFailure != nil {
+		return g.startFailure
+	}
+	if s := g.conn.GetState(); s != connectivity.Ready {
+		return fmt.Errorf("grpc server is %s", s)
+	}
+	return nil
+}
+
+// Stop the gateway with a graceful shutdown.
+func (g *Gateway) Stop() error {
+	if g.server != nil {
+		shutdownCtx, shutdownCancel := context.WithTimeout(g.ctx, 2*time.Second)
+		defer shutdownCancel()
+		if err := g.server.Shutdown(shutdownCtx); err != nil {
+			if errors.Is(err, context.DeadlineExceeded) {
+				log.Warn("Existing connections terminated")
+			} else {
+				log.WithError(err).Error("Failed to gracefully shut down server")
+			}
+		}
+	}
+	if g.cancel != nil {
+		g.cancel()
+	}
+	return nil
+}
+
+// dial the gRPC server.
+func (g *Gateway) dial(ctx context.Context, network, addr string) (*grpc.ClientConn, error) {
+	switch network {
+	case "tcp":
+		return g.dialTCP(ctx, addr)
+	case "unix":
+		return g.dialUnix(ctx, addr)
+	default:
+		return nil, fmt.Errorf("unsupported network type %q", network)
+	}
+}
+
+// dialTCP creates a client connection via TCP.
+// "addr" must be a valid TCP address with a port number.
+func (g *Gateway) dialTCP(ctx context.Context, addr string) (*grpc.ClientConn, error) {
+	var security grpc.DialOption
+	if len(g.cfg.remoteCert) > 0 {
+		creds, err := credentials.NewClientTLSFromFile(g.cfg.remoteCert, "")
+		if err != nil {
+			return nil, err
+		}
+		security = grpc.WithTransportCredentials(creds)
+	} else {
+		// Use insecure credentials when there's no remote cert provided.
+		security = grpc.WithTransportCredentials(insecure.NewCredentials())
+	}
+	opts := []grpc.DialOption{
+		security,
+		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(int(g.cfg.maxCallRecvMsgSize))),
+	}
+	return grpc.DialContext(ctx, addr, opts...)
+}
+
+// dialUnix creates a client connection via a unix domain socket.
+// "addr" must be a valid path to the socket.
+func (g *Gateway) dialUnix(ctx context.Context, addr string) (*grpc.ClientConn, error) {
+	d := func(addr string, timeout time.Duration) (net.Conn, error) {
+		return net.DialTimeout("unix", addr, timeout)
+	}
+	f := func(ctx context.Context, addr string) (net.Conn, error) {
+		if deadline, ok := ctx.Deadline(); ok {
+			return d(addr, time.Until(deadline))
+		}
+		return d(addr, 0)
+	}
+	opts := []grpc.DialOption{
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithContextDialer(f),
+		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(int(g.cfg.maxCallRecvMsgSize))),
+	}
+	return grpc.DialContext(ctx, addr, opts...)
+}

api/gateway/gateway_test.go

@@ -0,0 +1,107 @@
+package gateway
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"github.com/gorilla/mux"
+	"github.com/prysmaticlabs/prysm/v5/cmd/beacon-chain/flags"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	logTest "github.com/sirupsen/logrus/hooks/test"
+	"github.com/urfave/cli/v2"
+)
+
+func TestGateway_Customized(t *testing.T) {
+	r := mux.NewRouter()
+	cert := "cert"
+	origins := []string{"origin"}
+	size := uint64(100)
+
+	opts := []Option{
+		WithRouter(r),
+		WithRemoteCert(cert),
+		WithAllowedOrigins(origins),
+		WithMaxCallRecvMsgSize(size),
+		WithMuxHandler(func(
+			_ http.HandlerFunc,
+			_ http.ResponseWriter,
+			_ *http.Request,
+		) {
+		}),
+	}
+
+	g, err := New(context.Background(), opts...)
+	require.NoError(t, err)
+
+	assert.Equal(t, r, g.cfg.router)
+	assert.Equal(t, cert, g.cfg.remoteCert)
+	require.Equal(t, 1, len(g.cfg.allowedOrigins))
+	assert.Equal(t, origins[0], g.cfg.allowedOrigins[0])
+	assert.Equal(t, size, g.cfg.maxCallRecvMsgSize)
+}
+
+func TestGateway_StartStop(t *testing.T) {
+	hook := logTest.NewGlobal()
+
+	app := cli.App{}
+	set := flag.NewFlagSet("test", 0)
+	ctx := cli.NewContext(&app, set, nil)
+
+	gatewayPort := ctx.Int(flags.GRPCGatewayPort.Name)
+	gatewayHost := ctx.String(flags.GRPCGatewayHost.Name)
+	rpcHost := ctx.String(flags.RPCHost.Name)
+	selfAddress := fmt.Sprintf("%s:%d", rpcHost, ctx.Int(flags.RPCPort.Name))
+	gatewayAddress := fmt.Sprintf("%s:%d", gatewayHost, gatewayPort)
+
+	opts := []Option{
+		WithGatewayAddr(gatewayAddress),
+		WithRemoteAddr(selfAddress),
+		WithMuxHandler(func(
+			_ http.HandlerFunc,
+			_ http.ResponseWriter,
+			_ *http.Request,
+		) {
+		}),
+	}
+
+	g, err := New(context.Background(), opts...)
+	require.NoError(t, err)
+
+	g.Start()
+	go func() {
+		require.LogsContain(t, hook, "Starting gRPC gateway")
+		require.LogsDoNotContain(t, hook, "Starting API middleware")
+	}()
+	err = g.Stop()
+	require.NoError(t, err)
+}
+
+func TestGateway_NilHandler_NotFoundHandlerRegistered(t *testing.T) {
+	app := cli.App{}
+	set := flag.NewFlagSet("test", 0)
+	ctx := cli.NewContext(&app, set, nil)
+
+	gatewayPort := ctx.Int(flags.GRPCGatewayPort.Name)
+	gatewayHost := ctx.String(flags.GRPCGatewayHost.Name)
+	rpcHost := ctx.String(flags.RPCHost.Name)
+	selfAddress := fmt.Sprintf("%s:%d", rpcHost, ctx.Int(flags.RPCPort.Name))
+	gatewayAddress := fmt.Sprintf("%s:%d", gatewayHost, gatewayPort)
+
+	opts := []Option{
+		WithGatewayAddr(gatewayAddress),
+		WithRemoteAddr(selfAddress),
+	}
+
+	g, err := New(context.Background(), opts...)
+	require.NoError(t, err)
+
+	writer := httptest.NewRecorder()
+	g.cfg.router.ServeHTTP(writer, &http.Request{Method: "GET", Host: "localhost", URL: &url.URL{Path: "/foo"}})
+	assert.Equal(t, http.StatusNotFound, writer.Code)
+}

api/gateway/log.go

@@ -0,0 +1,5 @@
+package gateway
+
+import "github.com/sirupsen/logrus"
+
+var log = logrus.WithField("prefix", "gateway")

api/gateway/modifiers.go

@@ -0,0 +1,30 @@
+package gateway
+
+import (
+	"context"
+	"net/http"
+	"strconv"
+
+	gwruntime "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	"google.golang.org/protobuf/proto"
+)
+
+func HttpResponseModifier(ctx context.Context, w http.ResponseWriter, _ proto.Message) error {
+	md, ok := gwruntime.ServerMetadataFromContext(ctx)
+	if !ok {
+		return nil
+	}
+	// set http status code
+	if vals := md.HeaderMD.Get("x-http-code"); len(vals) > 0 {
+		code, err := strconv.Atoi(vals[0])
+		if err != nil {
+			return err
+		}
+		// delete the headers to not expose any grpc-metadata in http response
+		delete(md.HeaderMD, "x-http-code")
+		delete(w.Header(), "Grpc-Metadata-X-Http-Code")
+		w.WriteHeader(code)
+	}
+
+	return nil
+}

api/gateway/options.go

@@ -0,0 +1,79 @@
+package gateway
+
+import (
+	"time"
+
+	"github.com/gorilla/mux"
+	gwruntime "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+)
+
+type Option func(g *Gateway) error
+
+func WithPbHandlers(handlers []*PbMux) Option {
+	return func(g *Gateway) error {
+		g.cfg.pbHandlers = handlers
+		return nil
+	}
+}
+
+func WithMuxHandler(m MuxHandler) Option {
+	return func(g *Gateway) error {
+		g.cfg.muxHandler = m
+		return nil
+	}
+}
+
+func WithGatewayAddr(addr string) Option {
+	return func(g *Gateway) error {
+		g.cfg.gatewayAddr = addr
+		return nil
+	}
+}
+
+func WithRemoteAddr(addr string) Option {
+	return func(g *Gateway) error {
+		g.cfg.remoteAddr = addr
+		return nil
+	}
+}
+
+// WithRouter allows adding a custom mux router to the gateway.
+func WithRouter(r *mux.Router) Option {
+	return func(g *Gateway) error {
+		g.cfg.router = r
+		return nil
+	}
+}
+
+// WithAllowedOrigins allows adding a set of allowed origins to the gateway.
+func WithAllowedOrigins(origins []string) Option {
+	return func(g *Gateway) error {
+		g.cfg.allowedOrigins = origins
+		return nil
+	}
+}
+
+// WithRemoteCert allows adding a custom certificate to the gateway,
+func WithRemoteCert(cert string) Option {
+	return func(g *Gateway) error {
+		g.cfg.remoteCert = cert
+		return nil
+	}
+}
+
+// WithMaxCallRecvMsgSize allows specifying the maximum allowed gRPC message size.
+func WithMaxCallRecvMsgSize(size uint64) Option {
+	return func(g *Gateway) error {
+		g.cfg.maxCallRecvMsgSize = size
+		return nil
+	}
+}
+
+// WithTimeout allows changing the timeout value for API calls.
+func WithTimeout(seconds uint64) Option {
+	return func(g *Gateway) error {
+		g.cfg.timeout = time.Second * time.Duration(seconds)
+		gwruntime.DefaultContextTimeout = time.Second * time.Duration(seconds)
+		return nil
+	}
+}

api/grpc/BUILD.bazel

@@ -22,7 +22,9 @@ go_test(
     deps = [
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
+        "@com_github_grpc_ecosystem_grpc_gateway_v2//runtime:go_default_library",
         "@com_github_sirupsen_logrus//hooks/test:go_default_library",
+        "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//metadata:go_default_library",
     ],
 )

api/grpc/grpcutils.go

@@ -2,6 +2,8 @@ package grpc
 
 import (
 	"context"
+	"encoding/json"
+	"fmt"
 	"strings"
 	"time"
 
@@ -74,8 +76,21 @@ func AppendHeaders(parent context.Context, headers []string) context.Context {
 				logrus.Warnf("Incorrect gRPC header flag format. Skipping %v", keyValue[0])
 				continue
 			}
-			parent = metadata.AppendToOutgoingContext(parent, keyValue[0], strings.Join(keyValue[1:], "=")) // nolint:fatcontext
+			parent = metadata.AppendToOutgoingContext(parent, keyValue[0], strings.Join(keyValue[1:], "="))
 		}
 	}
 	return parent
 }
+
+// AppendCustomErrorHeader sets a CustomErrorMetadataKey gRPC header on the passed in context,
+// using the passed in error data as the header's value. The data is serialized as JSON.
+func AppendCustomErrorHeader(ctx context.Context, errorData interface{}) error {
+	j, err := json.Marshal(errorData)
+	if err != nil {
+		return fmt.Errorf("could not marshal error data into JSON: %w", err)
+	}
+	if err := grpc.SetHeader(ctx, metadata.Pairs(CustomErrorMetadataKey, string(j))); err != nil {
+		return fmt.Errorf("could not set custom error header: %w", err)
+	}
+	return nil
+}

api/grpc/grpcutils_test.go

@@ -2,11 +2,15 @@ package grpc
 
 import (
 	"context"
+	"encoding/json"
+	"strings"
 	"testing"
 
+	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
 	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	logTest "github.com/sirupsen/logrus/hooks/test"
+	"google.golang.org/grpc"
 	"google.golang.org/grpc/metadata"
 )
 
@@ -58,3 +62,17 @@ func TestAppendHeaders(t *testing.T) {
 		assert.Equal(t, "value=1", md.Get("first")[0])
 	})
 }
+
+func TestAppendCustomErrorHeader(t *testing.T) {
+	stream := &runtime.ServerTransportStream{}
+	ctx := grpc.NewContextWithServerTransportStream(context.Background(), stream)
+	data := &customErrorData{Message: "foo"}
+	require.NoError(t, AppendCustomErrorHeader(ctx, data))
+	// The stream used in test setup sets the metadata key in lowercase.
+	value, ok := stream.Header()[strings.ToLower(CustomErrorMetadataKey)]
+	require.Equal(t, true, ok, "Failed to retrieve custom error metadata value")
+	expected, err := json.Marshal(data)
+	require.NoError(t, err)
+	assert.Equal(t, string(expected), value[0])
+
+}

api/headers.go

@@ -1,7 +1,5 @@
 package api
 
-import "net/http"
-
 const (
 	VersionHeader                 = "Eth-Consensus-Version"
 	ExecutionPayloadBlindedHeader = "Eth-Execution-Payload-Blinded"
@@ -12,9 +10,3 @@ const (
 	EventStreamMediaType          = "text/event-stream"
 	KeepAlive                     = "keep-alive"
 )
-
-// SetSSEHeaders sets the headers needed for a server-sent event response.
-func SetSSEHeaders(w http.ResponseWriter) {
-	w.Header().Set("Content-Type", EventStreamMediaType)
-	w.Header().Set("Connection", KeepAlive)
-}

api/server/httprest/BUILD.bazel

@@ -1,31 +0,0 @@
-load("@prysm//tools/go:def.bzl", "go_library", "go_test")
-
-go_library(
-    name = "go_default_library",
-    srcs = [
-        "log.go",
-        "options.go",
-        "server.go",
-    ],
-    importpath = "github.com/prysmaticlabs/prysm/v5/api/server/httprest",
-    visibility = ["//visibility:public"],
-    deps = [
-        "//api/server/middleware:go_default_library",
-        "//runtime:go_default_library",
-        "@com_github_pkg_errors//:go_default_library",
-        "@com_github_sirupsen_logrus//:go_default_library",
-    ],
-)
-
-go_test(
-    name = "go_default_test",
-    srcs = ["server_test.go"],
-    embed = [":go_default_library"],
-    deps = [
-        "//cmd/beacon-chain/flags:go_default_library",
-        "//testing/assert:go_default_library",
-        "//testing/require:go_default_library",
-        "@com_github_sirupsen_logrus//hooks/test:go_default_library",
-        "@com_github_urfave_cli_v2//:go_default_library",
-    ],
-)

api/server/httprest/log.go

@@ -1,5 +0,0 @@
-package httprest
-
-import "github.com/sirupsen/logrus"
-
-var log = logrus.WithField("prefix", "httprest")

api/server/httprest/options.go

@@ -1,44 +0,0 @@
-package httprest
-
-import (
-	"time"
-
-	"net/http"
-
-	"github.com/prysmaticlabs/prysm/v5/api/server/middleware"
-)
-
-// Option is a http rest server functional parameter type.
-type Option func(g *Server) error
-
-// WithMiddlewares sets the list of middlewares to be applied on routes.
-func WithMiddlewares(mw []middleware.Middleware) Option {
-	return func(g *Server) error {
-		g.cfg.middlewares = mw
-		return nil
-	}
-}
-
-// WithHTTPAddr sets the full address ( host and port ) of the server.
-func WithHTTPAddr(addr string) Option {
-	return func(g *Server) error {
-		g.cfg.httpAddr = addr
-		return nil
-	}
-}
-
-// WithRouter sets the internal router of the server, this is required.
-func WithRouter(r *http.ServeMux) Option {
-	return func(g *Server) error {
-		g.cfg.router = r
-		return nil
-	}
-}
-
-// WithTimeout allows changing the timeout value for API calls.
-func WithTimeout(duration time.Duration) Option {
-	return func(g *Server) error {
-		g.cfg.timeout = duration
-		return nil
-	}
-}

api/server/httprest/server.go

@@ -1,101 +0,0 @@
-package httprest
-
-import (
-	"context"
-	"net/http"
-	"time"
-
-	"github.com/pkg/errors"
-	"github.com/prysmaticlabs/prysm/v5/api/server/middleware"
-	"github.com/prysmaticlabs/prysm/v5/runtime"
-)
-
-var _ runtime.Service = (*Server)(nil)
-
-// Config parameters for setting up the http-rest service.
-type config struct {
-	httpAddr    string
-	middlewares []middleware.Middleware
-	router      http.Handler
-	timeout     time.Duration
-}
-
-// Server serves HTTP traffic.
-type Server struct {
-	cfg          *config
-	server       *http.Server
-	cancel       context.CancelFunc
-	ctx          context.Context
-	startFailure error
-}
-
-// New returns a new instance of the Server.
-func New(ctx context.Context, opts ...Option) (*Server, error) {
-	g := &Server{
-		ctx: ctx,
-		cfg: &config{},
-	}
-	for _, opt := range opts {
-		if err := opt(g); err != nil {
-			return nil, err
-		}
-	}
-	if g.cfg.router == nil {
-		return nil, errors.New("router option not configured")
-	}
-	var handler http.Handler
-	defaultReadHeaderTimeout := time.Second
-	handler = middleware.MiddlewareChain(g.cfg.router, g.cfg.middlewares)
-	if g.cfg.timeout > 0*time.Second {
-		defaultReadHeaderTimeout = g.cfg.timeout
-		handler = http.TimeoutHandler(handler, g.cfg.timeout, "request timed out")
-	}
-	g.server = &http.Server{
-		Addr:              g.cfg.httpAddr,
-		Handler:           handler,
-		ReadHeaderTimeout: defaultReadHeaderTimeout,
-	}
-
-	return g, nil
-}
-
-// Start the http rest service.
-func (g *Server) Start() {
-	g.ctx, g.cancel = context.WithCancel(g.ctx)
-
-	go func() {
-		log.WithField("address", g.cfg.httpAddr).Info("Starting HTTP server")
-		if err := g.server.ListenAndServe(); err != http.ErrServerClosed {
-			log.WithError(err).Error("Failed to start HTTP server")
-			g.startFailure = err
-			return
-		}
-	}()
-}
-
-// Status of the HTTP server. Returns an error if this service is unhealthy.
-func (g *Server) Status() error {
-	if g.startFailure != nil {
-		return g.startFailure
-	}
-	return nil
-}
-
-// Stop the HTTP server with a graceful shutdown.
-func (g *Server) Stop() error {
-	if g.server != nil {
-		shutdownCtx, shutdownCancel := context.WithTimeout(g.ctx, 2*time.Second)
-		defer shutdownCancel()
-		if err := g.server.Shutdown(shutdownCtx); err != nil {
-			if errors.Is(err, context.DeadlineExceeded) {
-				log.Warn("Existing connections terminated")
-			} else {
-				log.WithError(err).Error("Failed to gracefully shut down server")
-			}
-		}
-	}
-	if g.cancel != nil {
-		g.cancel()
-	}
-	return nil
-}

api/server/httprest/server_test.go

@@ -1,71 +0,0 @@
-package httprest
-
-import (
-	"context"
-	"flag"
-	"fmt"
-	"net"
-	"net/http"
-	"net/http/httptest"
-	"net/url"
-	"testing"
-
-	"github.com/prysmaticlabs/prysm/v5/cmd/beacon-chain/flags"
-	"github.com/prysmaticlabs/prysm/v5/testing/assert"
-	"github.com/prysmaticlabs/prysm/v5/testing/require"
-	logTest "github.com/sirupsen/logrus/hooks/test"
-	"github.com/urfave/cli/v2"
-)
-
-func TestServer_StartStop(t *testing.T) {
-	hook := logTest.NewGlobal()
-
-	app := cli.App{}
-	set := flag.NewFlagSet("test", 0)
-	ctx := cli.NewContext(&app, set, nil)
-
-	port := ctx.Int(flags.HTTPServerPort.Name)
-	portStr := fmt.Sprintf("%d", port) // Convert port to string
-	host := ctx.String(flags.HTTPServerHost.Name)
-	address := net.JoinHostPort(host, portStr)
-	handler := http.NewServeMux()
-	opts := []Option{
-		WithHTTPAddr(address),
-		WithRouter(handler),
-	}
-
-	g, err := New(context.Background(), opts...)
-	require.NoError(t, err)
-
-	g.Start()
-	go func() {
-		require.LogsContain(t, hook, "Starting HTTP server")
-		require.LogsDoNotContain(t, hook, "Starting API middleware")
-	}()
-	err = g.Stop()
-	require.NoError(t, err)
-}
-
-func TestServer_NilHandler_NotFoundHandlerRegistered(t *testing.T) {
-	app := cli.App{}
-	set := flag.NewFlagSet("test", 0)
-	ctx := cli.NewContext(&app, set, nil)
-
-	handler := http.NewServeMux()
-	port := ctx.Int(flags.HTTPServerPort.Name)
-	portStr := fmt.Sprintf("%d", port) // Convert port to string
-	host := ctx.String(flags.HTTPServerHost.Name)
-	address := net.JoinHostPort(host, portStr)
-
-	opts := []Option{
-		WithHTTPAddr(address),
-		WithRouter(handler),
-	}
-
-	g, err := New(context.Background(), opts...)
-	require.NoError(t, err)
-
-	writer := httptest.NewRecorder()
-	g.cfg.router.ServeHTTP(writer, &http.Request{Method: "GET", Host: "localhost", URL: &url.URL{Path: "/foo"}})
-	assert.Equal(t, http.StatusNotFound, writer.Code)
-}

api/server/middleware/BUILD.bazel

@@ -8,7 +8,10 @@ go_library(
     ],
     importpath = "github.com/prysmaticlabs/prysm/v5/api/server/middleware",
     visibility = ["//visibility:public"],
-    deps = ["@com_github_rs_cors//:go_default_library"],
+    deps = [
+        "@com_github_gorilla_mux//:go_default_library",
+        "@com_github_rs_cors//:go_default_library",
+    ],
 )
 
 go_test(

api/server/middleware/middleware.go

@@ -5,11 +5,10 @@ import (
 	"net/http"
 	"strings"
 
+	"github.com/gorilla/mux"
 	"github.com/rs/cors"
 )
 
-type Middleware func(http.Handler) http.Handler
-
 // NormalizeQueryValuesHandler normalizes an input query of "key=value1,value2,value3" to "key=value1&key=value2&key=value3"
 func NormalizeQueryValuesHandler(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -22,7 +21,7 @@ func NormalizeQueryValuesHandler(next http.Handler) http.Handler {
 }
 
 // CorsHandler sets the cors settings on api endpoints
-func CorsHandler(allowOrigins []string) Middleware {
+func CorsHandler(allowOrigins []string) mux.MiddlewareFunc {
 	c := cors.New(cors.Options{
 		AllowedOrigins:   allowOrigins,
 		AllowedMethods:   []string{http.MethodPost, http.MethodGet, http.MethodDelete, http.MethodOptions},
@@ -35,7 +34,7 @@ func CorsHandler(allowOrigins []string) Middleware {
 }
 
 // ContentTypeHandler checks request for the appropriate media types otherwise returning a http.StatusUnsupportedMediaType error
-func ContentTypeHandler(acceptedMediaTypes []string) Middleware {
+func ContentTypeHandler(acceptedMediaTypes []string) mux.MiddlewareFunc {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			// skip the GET request
@@ -68,7 +67,7 @@ func ContentTypeHandler(acceptedMediaTypes []string) Middleware {
 }
 
 // AcceptHeaderHandler checks if the client's response preference is handled
-func AcceptHeaderHandler(serverAcceptedTypes []string) Middleware {
+func AcceptHeaderHandler(serverAcceptedTypes []string) mux.MiddlewareFunc {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			acceptHeader := r.Header.Get("Accept")
@@ -111,15 +110,3 @@ func AcceptHeaderHandler(serverAcceptedTypes []string) Middleware {
 		})
 	}
 }
-
-func MiddlewareChain(h http.Handler, mw []Middleware) http.Handler {
-	if len(mw) < 1 {
-		return h
-	}
-
-	wrapped := h
-	for i := len(mw) - 1; i >= 0; i-- {
-		wrapped = mw[i](wrapped)
-	}
-	return wrapped
-}

api/server/structs/BUILD.bazel

@@ -4,12 +4,8 @@ go_library(
     name = "go_default_library",
     srcs = [
         "block.go",
-        "block_execution.go",
         "conversions.go",
-        "conversions_blob.go",
         "conversions_block.go",
-        "conversions_block_execution.go",
-        "conversions_lightclient.go",
         "conversions_state.go",
         "endpoints_beacon.go",
         "endpoints_blob.go",
@@ -30,7 +26,6 @@ go_library(
         "//api/server:go_default_library",
         "//beacon-chain/state:go_default_library",
         "//config/fieldparams:go_default_library",
-        "//config/params:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//consensus-types/validator:go_default_library",
@@ -38,9 +33,7 @@ go_library(
         "//encoding/bytesutil:go_default_library",
         "//math:go_default_library",
         "//proto/engine/v1:go_default_library",
-        "//proto/eth/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
-        "//runtime/version:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",
         "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
@@ -49,16 +42,10 @@ go_library(
 
 go_test(
     name = "go_default_test",
-    srcs = [
-        "conversions_block_execution_test.go",
-        "conversions_test.go",
-    ],
+    srcs = ["conversions_test.go"],
     embed = [":go_default_library"],
     deps = [
-        "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//testing/require:go_default_library",
-        "@com_github_ethereum_go_ethereum//common:go_default_library",
-        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
     ],
 )

api/server/structs/block.go

@@ -14,10 +14,6 @@ type SignedMessageJsoner interface {
 	SigString() string
 }
 
-// ----------------------------------------------------------------------------
-// Phase 0
-// ----------------------------------------------------------------------------
-
 type SignedBeaconBlock struct {
 	Message   *BeaconBlock `json:"message"`
 	Signature string       `json:"signature"`
@@ -52,29 +48,6 @@ type BeaconBlockBody struct {
 	VoluntaryExits    []*SignedVoluntaryExit `json:"voluntary_exits"`
 }
 
-type SignedBeaconBlockHeaderContainer struct {
-	Header    *SignedBeaconBlockHeader `json:"header"`
-	Root      string                   `json:"root"`
-	Canonical bool                     `json:"canonical"`
-}
-
-type SignedBeaconBlockHeader struct {
-	Message   *BeaconBlockHeader `json:"message"`
-	Signature string             `json:"signature"`
-}
-
-type BeaconBlockHeader struct {
-	Slot          string `json:"slot"`
-	ProposerIndex string `json:"proposer_index"`
-	ParentRoot    string `json:"parent_root"`
-	StateRoot     string `json:"state_root"`
-	BodyRoot      string `json:"body_root"`
-}
-
-// ----------------------------------------------------------------------------
-// Altair
-// ----------------------------------------------------------------------------
-
 type SignedBeaconBlockAltair struct {
 	Message   *BeaconBlockAltair `json:"message"`
 	Signature string             `json:"signature"`
@@ -110,10 +83,6 @@ type BeaconBlockBodyAltair struct {
 	SyncAggregate     *SyncAggregate         `json:"sync_aggregate"`
 }
 
-// ----------------------------------------------------------------------------
-// Bellatrix
-// ----------------------------------------------------------------------------
-
 type SignedBeaconBlockBellatrix struct {
 	Message   *BeaconBlockBellatrix `json:"message"`
 	Signature string                `json:"signature"`
@@ -186,10 +155,6 @@ type BlindedBeaconBlockBodyBellatrix struct {
 	ExecutionPayloadHeader *ExecutionPayloadHeader `json:"execution_payload_header"`
 }
 
-// ----------------------------------------------------------------------------
-// Capella
-// ----------------------------------------------------------------------------
-
 type SignedBeaconBlockCapella struct {
 	Message   *BeaconBlockCapella `json:"message"`
 	Signature string              `json:"signature"`
@@ -264,10 +229,6 @@ type BlindedBeaconBlockBodyCapella struct {
 	BLSToExecutionChanges  []*SignedBLSToExecutionChange  `json:"bls_to_execution_changes"`
 }
 
-// ----------------------------------------------------------------------------
-// Deneb
-// ----------------------------------------------------------------------------
-
 type SignedBeaconBlockContentsDeneb struct {
 	SignedBlock *SignedBeaconBlockDeneb `json:"signed_block"`
 	KzgProofs   []string                `json:"kzg_proofs"`
@@ -356,10 +317,6 @@ type BlindedBeaconBlockBodyDeneb struct {
 	BlobKzgCommitments     []string                      `json:"blob_kzg_commitments"`
 }
 
-// ----------------------------------------------------------------------------
-// Electra
-// ----------------------------------------------------------------------------
-
 type SignedBeaconBlockContentsElectra struct {
 	SignedBlock *SignedBeaconBlockElectra `json:"signed_block"`
 	KzgProofs   []string                  `json:"kzg_proofs"`
@@ -405,10 +362,9 @@ type BeaconBlockBodyElectra struct {
 	Deposits              []*Deposit                    `json:"deposits"`
 	VoluntaryExits        []*SignedVoluntaryExit        `json:"voluntary_exits"`
 	SyncAggregate         *SyncAggregate                `json:"sync_aggregate"`
-	ExecutionPayload      *ExecutionPayloadDeneb        `json:"execution_payload"`
+	ExecutionPayload      *ExecutionPayloadElectra      `json:"execution_payload"`
 	BLSToExecutionChanges []*SignedBLSToExecutionChange `json:"bls_to_execution_changes"`
 	BlobKzgCommitments    []string                      `json:"blob_kzg_commitments"`
-	ExecutionRequests     *ExecutionRequests            `json:"execution_requests"`
 }
 
 type BlindedBeaconBlockElectra struct {
@@ -435,71 +391,191 @@ func (s *SignedBlindedBeaconBlockElectra) SigString() string {
 }
 
 type BlindedBeaconBlockBodyElectra struct {
-	RandaoReveal           string                        `json:"randao_reveal"`
-	Eth1Data               *Eth1Data                     `json:"eth1_data"`
-	Graffiti               string                        `json:"graffiti"`
-	ProposerSlashings      []*ProposerSlashing           `json:"proposer_slashings"`
-	AttesterSlashings      []*AttesterSlashingElectra    `json:"attester_slashings"`
-	Attestations           []*AttestationElectra         `json:"attestations"`
-	Deposits               []*Deposit                    `json:"deposits"`
-	VoluntaryExits         []*SignedVoluntaryExit        `json:"voluntary_exits"`
-	SyncAggregate          *SyncAggregate                `json:"sync_aggregate"`
-	ExecutionPayloadHeader *ExecutionPayloadHeaderDeneb  `json:"execution_payload_header"`
-	BLSToExecutionChanges  []*SignedBLSToExecutionChange `json:"bls_to_execution_changes"`
-	BlobKzgCommitments     []string                      `json:"blob_kzg_commitments"`
-	ExecutionRequests      *ExecutionRequests            `json:"execution_requests"`
+	RandaoReveal           string                         `json:"randao_reveal"`
+	Eth1Data               *Eth1Data                      `json:"eth1_data"`
+	Graffiti               string                         `json:"graffiti"`
+	ProposerSlashings      []*ProposerSlashing            `json:"proposer_slashings"`
+	AttesterSlashings      []*AttesterSlashingElectra     `json:"attester_slashings"`
+	Attestations           []*AttestationElectra          `json:"attestations"`
+	Deposits               []*Deposit                     `json:"deposits"`
+	VoluntaryExits         []*SignedVoluntaryExit         `json:"voluntary_exits"`
+	SyncAggregate          *SyncAggregate                 `json:"sync_aggregate"`
+	ExecutionPayloadHeader *ExecutionPayloadHeaderElectra `json:"execution_payload_header"`
+	BLSToExecutionChanges  []*SignedBLSToExecutionChange  `json:"bls_to_execution_changes"`
+	BlobKzgCommitments     []string                       `json:"blob_kzg_commitments"`
 }
 
-// ----------------------------------------------------------------------------
-// Fulu
-// ----------------------------------------------------------------------------
-
-type SignedBeaconBlockContentsFulu struct {
-	SignedBlock *SignedBeaconBlockFulu `json:"signed_block"`
-	KzgProofs   []string               `json:"kzg_proofs"`
-	Blobs       []string               `json:"blobs"`
+type SignedBeaconBlockHeaderContainer struct {
+	Header    *SignedBeaconBlockHeader `json:"header"`
+	Root      string                   `json:"root"`
+	Canonical bool                     `json:"canonical"`
 }
 
-type BeaconBlockContentsFulu struct {
-	Block     *BeaconBlockElectra `json:"block"`
-	KzgProofs []string            `json:"kzg_proofs"`
-	Blobs     []string            `json:"blobs"`
+type SignedBeaconBlockHeader struct {
+	Message   *BeaconBlockHeader `json:"message"`
+	Signature string             `json:"signature"`
 }
 
-type SignedBeaconBlockFulu struct {
-	Message   *BeaconBlockElectra `json:"message"`
-	Signature string              `json:"signature"`
+type BeaconBlockHeader struct {
+	Slot          string `json:"slot"`
+	ProposerIndex string `json:"proposer_index"`
+	ParentRoot    string `json:"parent_root"`
+	StateRoot     string `json:"state_root"`
+	BodyRoot      string `json:"body_root"`
 }
 
-var _ SignedMessageJsoner = &SignedBeaconBlockFulu{}
-
-func (s *SignedBeaconBlockFulu) MessageRawJson() ([]byte, error) {
-	return json.Marshal(s.Message)
+type ExecutionPayload struct {
+	ParentHash    string   `json:"parent_hash"`
+	FeeRecipient  string   `json:"fee_recipient"`
+	StateRoot     string   `json:"state_root"`
+	ReceiptsRoot  string   `json:"receipts_root"`
+	LogsBloom     string   `json:"logs_bloom"`
+	PrevRandao    string   `json:"prev_randao"`
+	BlockNumber   string   `json:"block_number"`
+	GasLimit      string   `json:"gas_limit"`
+	GasUsed       string   `json:"gas_used"`
+	Timestamp     string   `json:"timestamp"`
+	ExtraData     string   `json:"extra_data"`
+	BaseFeePerGas string   `json:"base_fee_per_gas"`
+	BlockHash     string   `json:"block_hash"`
+	Transactions  []string `json:"transactions"`
 }
 
-func (s *SignedBeaconBlockFulu) SigString() string {
-	return s.Signature
+type ExecutionPayloadHeader struct {
+	ParentHash       string `json:"parent_hash"`
+	FeeRecipient     string `json:"fee_recipient"`
+	StateRoot        string `json:"state_root"`
+	ReceiptsRoot     string `json:"receipts_root"`
+	LogsBloom        string `json:"logs_bloom"`
+	PrevRandao       string `json:"prev_randao"`
+	BlockNumber      string `json:"block_number"`
+	GasLimit         string `json:"gas_limit"`
+	GasUsed          string `json:"gas_used"`
+	Timestamp        string `json:"timestamp"`
+	ExtraData        string `json:"extra_data"`
+	BaseFeePerGas    string `json:"base_fee_per_gas"`
+	BlockHash        string `json:"block_hash"`
+	TransactionsRoot string `json:"transactions_root"`
 }
 
-type BlindedBeaconBlockFulu struct {
-	Slot          string                         `json:"slot"`
-	ProposerIndex string                         `json:"proposer_index"`
-	ParentRoot    string                         `json:"parent_root"`
-	StateRoot     string                         `json:"state_root"`
-	Body          *BlindedBeaconBlockBodyElectra `json:"body"`
+type ExecutionPayloadCapella struct {
+	ParentHash    string        `json:"parent_hash"`
+	FeeRecipient  string        `json:"fee_recipient"`
+	StateRoot     string        `json:"state_root"`
+	ReceiptsRoot  string        `json:"receipts_root"`
+	LogsBloom     string        `json:"logs_bloom"`
+	PrevRandao    string        `json:"prev_randao"`
+	BlockNumber   string        `json:"block_number"`
+	GasLimit      string        `json:"gas_limit"`
+	GasUsed       string        `json:"gas_used"`
+	Timestamp     string        `json:"timestamp"`
+	ExtraData     string        `json:"extra_data"`
+	BaseFeePerGas string        `json:"base_fee_per_gas"`
+	BlockHash     string        `json:"block_hash"`
+	Transactions  []string      `json:"transactions"`
+	Withdrawals   []*Withdrawal `json:"withdrawals"`
 }
 
-type SignedBlindedBeaconBlockFulu struct {
-	Message   *BlindedBeaconBlockFulu `json:"message"`
-	Signature string                  `json:"signature"`
+type ExecutionPayloadHeaderCapella struct {
+	ParentHash       string `json:"parent_hash"`
+	FeeRecipient     string `json:"fee_recipient"`
+	StateRoot        string `json:"state_root"`
+	ReceiptsRoot     string `json:"receipts_root"`
+	LogsBloom        string `json:"logs_bloom"`
+	PrevRandao       string `json:"prev_randao"`
+	BlockNumber      string `json:"block_number"`
+	GasLimit         string `json:"gas_limit"`
+	GasUsed          string `json:"gas_used"`
+	Timestamp        string `json:"timestamp"`
+	ExtraData        string `json:"extra_data"`
+	BaseFeePerGas    string `json:"base_fee_per_gas"`
+	BlockHash        string `json:"block_hash"`
+	TransactionsRoot string `json:"transactions_root"`
+	WithdrawalsRoot  string `json:"withdrawals_root"`
 }
 
-var _ SignedMessageJsoner = &SignedBlindedBeaconBlockFulu{}
-
-func (s *SignedBlindedBeaconBlockFulu) MessageRawJson() ([]byte, error) {
-	return json.Marshal(s.Message)
+type ExecutionPayloadDeneb struct {
+	ParentHash    string        `json:"parent_hash"`
+	FeeRecipient  string        `json:"fee_recipient"`
+	StateRoot     string        `json:"state_root"`
+	ReceiptsRoot  string        `json:"receipts_root"`
+	LogsBloom     string        `json:"logs_bloom"`
+	PrevRandao    string        `json:"prev_randao"`
+	BlockNumber   string        `json:"block_number"`
+	GasLimit      string        `json:"gas_limit"`
+	GasUsed       string        `json:"gas_used"`
+	Timestamp     string        `json:"timestamp"`
+	ExtraData     string        `json:"extra_data"`
+	BaseFeePerGas string        `json:"base_fee_per_gas"`
+	BlockHash     string        `json:"block_hash"`
+	Transactions  []string      `json:"transactions"`
+	Withdrawals   []*Withdrawal `json:"withdrawals"`
+	BlobGasUsed   string        `json:"blob_gas_used"`
+	ExcessBlobGas string        `json:"excess_blob_gas"`
 }
 
-func (s *SignedBlindedBeaconBlockFulu) SigString() string {
-	return s.Signature
+type ExecutionPayloadHeaderDeneb struct {
+	ParentHash       string `json:"parent_hash"`
+	FeeRecipient     string `json:"fee_recipient"`
+	StateRoot        string `json:"state_root"`
+	ReceiptsRoot     string `json:"receipts_root"`
+	LogsBloom        string `json:"logs_bloom"`
+	PrevRandao       string `json:"prev_randao"`
+	BlockNumber      string `json:"block_number"`
+	GasLimit         string `json:"gas_limit"`
+	GasUsed          string `json:"gas_used"`
+	Timestamp        string `json:"timestamp"`
+	ExtraData        string `json:"extra_data"`
+	BaseFeePerGas    string `json:"base_fee_per_gas"`
+	BlockHash        string `json:"block_hash"`
+	TransactionsRoot string `json:"transactions_root"`
+	WithdrawalsRoot  string `json:"withdrawals_root"`
+	BlobGasUsed      string `json:"blob_gas_used"`
+	ExcessBlobGas    string `json:"excess_blob_gas"`
+}
+
+type ExecutionPayloadElectra struct {
+	ParentHash            string                  `json:"parent_hash"`
+	FeeRecipient          string                  `json:"fee_recipient"`
+	StateRoot             string                  `json:"state_root"`
+	ReceiptsRoot          string                  `json:"receipts_root"`
+	LogsBloom             string                  `json:"logs_bloom"`
+	PrevRandao            string                  `json:"prev_randao"`
+	BlockNumber           string                  `json:"block_number"`
+	GasLimit              string                  `json:"gas_limit"`
+	GasUsed               string                  `json:"gas_used"`
+	Timestamp             string                  `json:"timestamp"`
+	ExtraData             string                  `json:"extra_data"`
+	BaseFeePerGas         string                  `json:"base_fee_per_gas"`
+	BlockHash             string                  `json:"block_hash"`
+	Transactions          []string                `json:"transactions"`
+	Withdrawals           []*Withdrawal           `json:"withdrawals"`
+	BlobGasUsed           string                  `json:"blob_gas_used"`
+	ExcessBlobGas         string                  `json:"excess_blob_gas"`
+	DepositRequests       []*DepositRequest       `json:"deposit_requests"`
+	WithdrawalRequests    []*WithdrawalRequest    `json:"withdrawal_requests"`
+	ConsolidationRequests []*ConsolidationRequest `json:"consolidation_requests"`
+}
+
+type ExecutionPayloadHeaderElectra struct {
+	ParentHash                string `json:"parent_hash"`
+	FeeRecipient              string `json:"fee_recipient"`
+	StateRoot                 string `json:"state_root"`
+	ReceiptsRoot              string `json:"receipts_root"`
+	LogsBloom                 string `json:"logs_bloom"`
+	PrevRandao                string `json:"prev_randao"`
+	BlockNumber               string `json:"block_number"`
+	GasLimit                  string `json:"gas_limit"`
+	GasUsed                   string `json:"gas_used"`
+	Timestamp                 string `json:"timestamp"`
+	ExtraData                 string `json:"extra_data"`
+	BaseFeePerGas             string `json:"base_fee_per_gas"`
+	BlockHash                 string `json:"block_hash"`
+	TransactionsRoot          string `json:"transactions_root"`
+	WithdrawalsRoot           string `json:"withdrawals_root"`
+	BlobGasUsed               string `json:"blob_gas_used"`
+	ExcessBlobGas             string `json:"excess_blob_gas"`
+	DepositRequestsRoot       string `json:"deposit_requests_root"`
+	WithdrawalRequestsRoot    string `json:"withdrawal_requests_root"`
+	ConsolidationRequestsRoot string `json:"consolidation_requests_root"`
 }

api/server/structs/block_execution.go

@@ -1,157 +0,0 @@
-package structs
-
-// ----------------------------------------------------------------------------
-// Bellatrix
-// ----------------------------------------------------------------------------
-
-type ExecutionPayload struct {
-	ParentHash    string   `json:"parent_hash"`
-	FeeRecipient  string   `json:"fee_recipient"`
-	StateRoot     string   `json:"state_root"`
-	ReceiptsRoot  string   `json:"receipts_root"`
-	LogsBloom     string   `json:"logs_bloom"`
-	PrevRandao    string   `json:"prev_randao"`
-	BlockNumber   string   `json:"block_number"`
-	GasLimit      string   `json:"gas_limit"`
-	GasUsed       string   `json:"gas_used"`
-	Timestamp     string   `json:"timestamp"`
-	ExtraData     string   `json:"extra_data"`
-	BaseFeePerGas string   `json:"base_fee_per_gas"`
-	BlockHash     string   `json:"block_hash"`
-	Transactions  []string `json:"transactions"`
-}
-
-type ExecutionPayloadHeader struct {
-	ParentHash       string `json:"parent_hash"`
-	FeeRecipient     string `json:"fee_recipient"`
-	StateRoot        string `json:"state_root"`
-	ReceiptsRoot     string `json:"receipts_root"`
-	LogsBloom        string `json:"logs_bloom"`
-	PrevRandao       string `json:"prev_randao"`
-	BlockNumber      string `json:"block_number"`
-	GasLimit         string `json:"gas_limit"`
-	GasUsed          string `json:"gas_used"`
-	Timestamp        string `json:"timestamp"`
-	ExtraData        string `json:"extra_data"`
-	BaseFeePerGas    string `json:"base_fee_per_gas"`
-	BlockHash        string `json:"block_hash"`
-	TransactionsRoot string `json:"transactions_root"`
-}
-
-// ----------------------------------------------------------------------------
-// Capella
-// ----------------------------------------------------------------------------
-
-type ExecutionPayloadCapella struct {
-	ParentHash    string        `json:"parent_hash"`
-	FeeRecipient  string        `json:"fee_recipient"`
-	StateRoot     string        `json:"state_root"`
-	ReceiptsRoot  string        `json:"receipts_root"`
-	LogsBloom     string        `json:"logs_bloom"`
-	PrevRandao    string        `json:"prev_randao"`
-	BlockNumber   string        `json:"block_number"`
-	GasLimit      string        `json:"gas_limit"`
-	GasUsed       string        `json:"gas_used"`
-	Timestamp     string        `json:"timestamp"`
-	ExtraData     string        `json:"extra_data"`
-	BaseFeePerGas string        `json:"base_fee_per_gas"`
-	BlockHash     string        `json:"block_hash"`
-	Transactions  []string      `json:"transactions"`
-	Withdrawals   []*Withdrawal `json:"withdrawals"`
-}
-
-type ExecutionPayloadHeaderCapella struct {
-	ParentHash       string `json:"parent_hash"`
-	FeeRecipient     string `json:"fee_recipient"`
-	StateRoot        string `json:"state_root"`
-	ReceiptsRoot     string `json:"receipts_root"`
-	LogsBloom        string `json:"logs_bloom"`
-	PrevRandao       string `json:"prev_randao"`
-	BlockNumber      string `json:"block_number"`
-	GasLimit         string `json:"gas_limit"`
-	GasUsed          string `json:"gas_used"`
-	Timestamp        string `json:"timestamp"`
-	ExtraData        string `json:"extra_data"`
-	BaseFeePerGas    string `json:"base_fee_per_gas"`
-	BlockHash        string `json:"block_hash"`
-	TransactionsRoot string `json:"transactions_root"`
-	WithdrawalsRoot  string `json:"withdrawals_root"`
-}
-
-// ----------------------------------------------------------------------------
-// Deneb
-// ----------------------------------------------------------------------------
-
-type ExecutionPayloadDeneb struct {
-	ParentHash    string        `json:"parent_hash"`
-	FeeRecipient  string        `json:"fee_recipient"`
-	StateRoot     string        `json:"state_root"`
-	ReceiptsRoot  string        `json:"receipts_root"`
-	LogsBloom     string        `json:"logs_bloom"`
-	PrevRandao    string        `json:"prev_randao"`
-	BlockNumber   string        `json:"block_number"`
-	GasLimit      string        `json:"gas_limit"`
-	GasUsed       string        `json:"gas_used"`
-	Timestamp     string        `json:"timestamp"`
-	ExtraData     string        `json:"extra_data"`
-	BaseFeePerGas string        `json:"base_fee_per_gas"`
-	BlockHash     string        `json:"block_hash"`
-	Transactions  []string      `json:"transactions"`
-	Withdrawals   []*Withdrawal `json:"withdrawals"`
-	BlobGasUsed   string        `json:"blob_gas_used"`
-	ExcessBlobGas string        `json:"excess_blob_gas"`
-}
-
-type ExecutionPayloadHeaderDeneb struct {
-	ParentHash       string `json:"parent_hash"`
-	FeeRecipient     string `json:"fee_recipient"`
-	StateRoot        string `json:"state_root"`
-	ReceiptsRoot     string `json:"receipts_root"`
-	LogsBloom        string `json:"logs_bloom"`
-	PrevRandao       string `json:"prev_randao"`
-	BlockNumber      string `json:"block_number"`
-	GasLimit         string `json:"gas_limit"`
-	GasUsed          string `json:"gas_used"`
-	Timestamp        string `json:"timestamp"`
-	ExtraData        string `json:"extra_data"`
-	BaseFeePerGas    string `json:"base_fee_per_gas"`
-	BlockHash        string `json:"block_hash"`
-	TransactionsRoot string `json:"transactions_root"`
-	WithdrawalsRoot  string `json:"withdrawals_root"`
-	BlobGasUsed      string `json:"blob_gas_used"`
-	ExcessBlobGas    string `json:"excess_blob_gas"`
-}
-
-// ----------------------------------------------------------------------------
-// Electra
-// ----------------------------------------------------------------------------
-
-type ExecutionRequests struct {
-	Deposits       []*DepositRequest       `json:"deposits"`
-	Withdrawals    []*WithdrawalRequest    `json:"withdrawals"`
-	Consolidations []*ConsolidationRequest `json:"consolidations"`
-}
-
-type DepositRequest struct {
-	Pubkey                string `json:"pubkey"`
-	WithdrawalCredentials string `json:"withdrawal_credentials"`
-	Amount                string `json:"amount"`
-	Signature             string `json:"signature"`
-	Index                 string `json:"index"`
-}
-
-type WithdrawalRequest struct {
-	SourceAddress   string `json:"source_address"`
-	ValidatorPubkey string `json:"validator_pubkey"`
-	Amount          string `json:"amount"`
-}
-
-type ConsolidationRequest struct {
-	SourceAddress string `json:"source_address"`
-	SourcePubkey  string `json:"source_pubkey"`
-	TargetPubkey  string `json:"target_pubkey"`
-}
-
-// ----------------------------------------------------------------------------
-// Fulu
-// ----------------------------------------------------------------------------

api/server/structs/conversions.go

@@ -9,14 +9,12 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/api/server"
 	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
-	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/validator"
 	"github.com/prysmaticlabs/prysm/v5/container/slice"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/v5/math"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
-	ethv1 "github.com/prysmaticlabs/prysm/v5/proto/eth/v1"
 	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 )
 
@@ -52,9 +50,6 @@ func HistoricalSummaryFromConsensus(s *eth.HistoricalSummary) *HistoricalSummary
 }
 
 func (s *SignedBLSToExecutionChange) ToConsensus() (*eth.SignedBLSToExecutionChange, error) {
-	if s.Message == nil {
-		return nil, server.NewDecodeError(errNilValue, "Message")
-	}
 	change, err := s.Message.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Message")
@@ -106,17 +101,14 @@ func SignedBLSChangeFromConsensus(ch *eth.SignedBLSToExecutionChange) *SignedBLS
 
 func SignedBLSChangesToConsensus(src []*SignedBLSToExecutionChange) ([]*eth.SignedBLSToExecutionChange, error) {
 	if src == nil {
-		return nil, server.NewDecodeError(errNilValue, "SignedBLSToExecutionChanges")
+		return nil, errNilValue
 	}
 	err := slice.VerifyMaxLength(src, 16)
 	if err != nil {
-		return nil, server.NewDecodeError(err, "SignedBLSToExecutionChanges")
+		return nil, err
 	}
 	changes := make([]*eth.SignedBLSToExecutionChange, len(src))
 	for i, ch := range src {
-		if ch == nil {
-			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d]", i))
-		}
 		changes[i], err = ch.ToConsensus()
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d]", i))
@@ -162,9 +154,6 @@ func ForkFromConsensus(f *eth.Fork) *Fork {
 }
 
 func (s *SignedValidatorRegistration) ToConsensus() (*eth.SignedValidatorRegistrationV1, error) {
-	if s.Message == nil {
-		return nil, server.NewDecodeError(errNilValue, "Message")
-	}
 	msg, err := s.Message.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Message")
@@ -221,9 +210,6 @@ func SignedValidatorRegistrationFromConsensus(vr *eth.SignedValidatorRegistratio
 }
 
 func (s *SignedContributionAndProof) ToConsensus() (*eth.SignedContributionAndProof, error) {
-	if s.Message == nil {
-		return nil, server.NewDecodeError(errNilValue, "Message")
-	}
 	msg, err := s.Message.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Message")
@@ -248,9 +234,6 @@ func SignedContributionAndProofFromConsensus(c *eth.SignedContributionAndProof)
 }
 
 func (c *ContributionAndProof) ToConsensus() (*eth.ContributionAndProof, error) {
-	if c.Contribution == nil {
-		return nil, server.NewDecodeError(errNilValue, "Contribution")
-	}
 	contribution, err := c.Contribution.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Contribution")
@@ -259,7 +242,7 @@ func (c *ContributionAndProof) ToConsensus() (*eth.ContributionAndProof, error)
 	if err != nil {
 		return nil, server.NewDecodeError(err, "AggregatorIndex")
 	}
-	selectionProof, err := bytesutil.DecodeHexWithLength(c.SelectionProof, fieldparams.BLSSignatureLength)
+	selectionProof, err := bytesutil.DecodeHexWithLength(c.SelectionProof, 96)
 	if err != nil {
 		return nil, server.NewDecodeError(err, "SelectionProof")
 	}
@@ -322,9 +305,6 @@ func SyncCommitteeContributionFromConsensus(c *eth.SyncCommitteeContribution) *S
 }
 
 func (s *SignedAggregateAttestationAndProof) ToConsensus() (*eth.SignedAggregateAttestationAndProof, error) {
-	if s.Message == nil {
-		return nil, server.NewDecodeError(errNilValue, "Message")
-	}
 	msg, err := s.Message.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Message")
@@ -345,14 +325,11 @@ func (a *AggregateAttestationAndProof) ToConsensus() (*eth.AggregateAttestationA
 	if err != nil {
 		return nil, server.NewDecodeError(err, "AggregatorIndex")
 	}
-	if a.Aggregate == nil {
-		return nil, server.NewDecodeError(errNilValue, "Aggregate")
-	}
 	agg, err := a.Aggregate.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Aggregate")
 	}
-	proof, err := bytesutil.DecodeHexWithLength(a.SelectionProof, fieldparams.BLSSignatureLength)
+	proof, err := bytesutil.DecodeHexWithLength(a.SelectionProof, 96)
 	if err != nil {
 		return nil, server.NewDecodeError(err, "SelectionProof")
 	}
@@ -364,9 +341,6 @@ func (a *AggregateAttestationAndProof) ToConsensus() (*eth.AggregateAttestationA
 }
 
 func (s *SignedAggregateAttestationAndProofElectra) ToConsensus() (*eth.SignedAggregateAttestationAndProofElectra, error) {
-	if s.Message == nil {
-		return nil, server.NewDecodeError(errNilValue, "Message")
-	}
 	msg, err := s.Message.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Message")
@@ -387,14 +361,11 @@ func (a *AggregateAttestationAndProofElectra) ToConsensus() (*eth.AggregateAttes
 	if err != nil {
 		return nil, server.NewDecodeError(err, "AggregatorIndex")
 	}
-	if a.Aggregate == nil {
-		return nil, server.NewDecodeError(errNilValue, "Aggregate")
-	}
 	agg, err := a.Aggregate.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Aggregate")
 	}
-	proof, err := bytesutil.DecodeHexWithLength(a.SelectionProof, fieldparams.BLSSignatureLength)
+	proof, err := bytesutil.DecodeHexWithLength(a.SelectionProof, 96)
 	if err != nil {
 		return nil, server.NewDecodeError(err, "SelectionProof")
 	}
@@ -410,9 +381,6 @@ func (a *Attestation) ToConsensus() (*eth.Attestation, error) {
 	if err != nil {
 		return nil, server.NewDecodeError(err, "AggregationBits")
 	}
-	if a.Data == nil {
-		return nil, server.NewDecodeError(errNilValue, "Data")
-	}
 	data, err := a.Data.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Data")
@@ -442,9 +410,6 @@ func (a *AttestationElectra) ToConsensus() (*eth.AttestationElectra, error) {
 	if err != nil {
 		return nil, server.NewDecodeError(err, "AggregationBits")
 	}
-	if a.Data == nil {
-		return nil, server.NewDecodeError(errNilValue, "Data")
-	}
 	data, err := a.Data.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Data")
@@ -466,44 +431,6 @@ func (a *AttestationElectra) ToConsensus() (*eth.AttestationElectra, error) {
 	}, nil
 }
 
-func SingleAttFromConsensus(a *eth.SingleAttestation) *SingleAttestation {
-	return &SingleAttestation{
-		CommitteeIndex: fmt.Sprintf("%d", a.CommitteeId),
-		AttesterIndex:  fmt.Sprintf("%d", a.AttesterIndex),
-		Data:           AttDataFromConsensus(a.Data),
-		Signature:      hexutil.Encode(a.Signature),
-	}
-}
-
-func (a *SingleAttestation) ToConsensus() (*eth.SingleAttestation, error) {
-	ci, err := strconv.ParseUint(a.CommitteeIndex, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "CommitteeIndex")
-	}
-	ai, err := strconv.ParseUint(a.AttesterIndex, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "AttesterIndex")
-	}
-	if a.Data == nil {
-		return nil, server.NewDecodeError(errNilValue, "Data")
-	}
-	data, err := a.Data.ToConsensus()
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Data")
-	}
-	sig, err := bytesutil.DecodeHexWithLength(a.Signature, fieldparams.BLSSignatureLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Signature")
-	}
-
-	return &eth.SingleAttestation{
-		CommitteeId:   primitives.CommitteeIndex(ci),
-		AttesterIndex: primitives.ValidatorIndex(ai),
-		Data:          data,
-		Signature:     sig,
-	}, nil
-}
-
 func AttElectraFromConsensus(a *eth.AttestationElectra) *AttestationElectra {
 	return &AttestationElectra{
 		AggregationBits: hexutil.Encode(a.AggregationBits),
@@ -526,16 +453,10 @@ func (a *AttestationData) ToConsensus() (*eth.AttestationData, error) {
 	if err != nil {
 		return nil, server.NewDecodeError(err, "BeaconBlockRoot")
 	}
-	if a.Source == nil {
-		return nil, server.NewDecodeError(errNilValue, "Source")
-	}
 	source, err := a.Source.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Source")
 	}
-	if a.Target == nil {
-		return nil, server.NewDecodeError(errNilValue, "Target")
-	}
 	target, err := a.Target.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Target")
@@ -635,17 +556,15 @@ func (b *BeaconCommitteeSubscription) ToConsensus() (*validator.BeaconCommitteeS
 }
 
 func (e *SignedVoluntaryExit) ToConsensus() (*eth.SignedVoluntaryExit, error) {
-	if e.Message == nil {
-		return nil, server.NewDecodeError(errNilValue, "Message")
+	sig, err := bytesutil.DecodeHexWithLength(e.Signature, fieldparams.BLSSignatureLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "Signature")
 	}
 	exit, err := e.Message.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Message")
 	}
-	sig, err := bytesutil.DecodeHexWithLength(e.Signature, fieldparams.BLSSignatureLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Signature")
-	}
+
 	return &eth.SignedVoluntaryExit{
 		Exit:      exit,
 		Signature: sig,
@@ -748,16 +667,10 @@ func Eth1DataFromConsensus(e1d *eth.Eth1Data) *Eth1Data {
 }
 
 func (s *ProposerSlashing) ToConsensus() (*eth.ProposerSlashing, error) {
-	if s.SignedHeader1 == nil {
-		return nil, server.NewDecodeError(errNilValue, "SignedHeader1")
-	}
 	h1, err := s.SignedHeader1.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "SignedHeader1")
 	}
-	if s.SignedHeader2 == nil {
-		return nil, server.NewDecodeError(errNilValue, "SignedHeader2")
-	}
 	h2, err := s.SignedHeader2.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "SignedHeader2")
@@ -770,16 +683,10 @@ func (s *ProposerSlashing) ToConsensus() (*eth.ProposerSlashing, error) {
 }
 
 func (s *AttesterSlashing) ToConsensus() (*eth.AttesterSlashing, error) {
-	if s.Attestation1 == nil {
-		return nil, server.NewDecodeError(errNilValue, "Attestation1")
-	}
 	att1, err := s.Attestation1.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Attestation1")
 	}
-	if s.Attestation2 == nil {
-		return nil, server.NewDecodeError(errNilValue, "Attestation2")
-	}
 	att2, err := s.Attestation2.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Attestation2")
@@ -788,16 +695,10 @@ func (s *AttesterSlashing) ToConsensus() (*eth.AttesterSlashing, error) {
 }
 
 func (s *AttesterSlashingElectra) ToConsensus() (*eth.AttesterSlashingElectra, error) {
-	if s.Attestation1 == nil {
-		return nil, server.NewDecodeError(errNilValue, "Attestation1")
-	}
 	att1, err := s.Attestation1.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Attestation1")
 	}
-	if s.Attestation2 == nil {
-		return nil, server.NewDecodeError(errNilValue, "Attestation2")
-	}
 	att2, err := s.Attestation2.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Attestation2")
@@ -806,10 +707,6 @@ func (s *AttesterSlashingElectra) ToConsensus() (*eth.AttesterSlashingElectra, e
 }
 
 func (a *IndexedAttestation) ToConsensus() (*eth.IndexedAttestation, error) {
-	if err := slice.VerifyMaxLength(a.AttestingIndices, params.BeaconConfig().MaxValidatorsPerCommittee); err != nil {
-		return nil, err
-	}
-
 	indices := make([]uint64, len(a.AttestingIndices))
 	var err error
 	for i, ix := range a.AttestingIndices {
@@ -818,9 +715,6 @@ func (a *IndexedAttestation) ToConsensus() (*eth.IndexedAttestation, error) {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("AttestingIndices[%d]", i))
 		}
 	}
-	if a.Data == nil {
-		return nil, server.NewDecodeError(errNilValue, "Data")
-	}
 	data, err := a.Data.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Data")
@@ -838,13 +732,6 @@ func (a *IndexedAttestation) ToConsensus() (*eth.IndexedAttestation, error) {
 }
 
 func (a *IndexedAttestationElectra) ToConsensus() (*eth.IndexedAttestationElectra, error) {
-	if err := slice.VerifyMaxLength(
-		a.AttestingIndices,
-		params.BeaconConfig().MaxValidatorsPerCommittee*params.BeaconConfig().MaxCommitteesPerSlot,
-	); err != nil {
-		return nil, err
-	}
-
 	indices := make([]uint64, len(a.AttestingIndices))
 	var err error
 	for i, ix := range a.AttestingIndices {
@@ -853,9 +740,6 @@ func (a *IndexedAttestationElectra) ToConsensus() (*eth.IndexedAttestationElectr
 			return nil, server.NewDecodeError(err, fmt.Sprintf("AttestingIndices[%d]", i))
 		}
 	}
-	if a.Data == nil {
-		return nil, server.NewDecodeError(errNilValue, "Data")
-	}
 	data, err := a.Data.ToConsensus()
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Data")
@@ -889,13 +773,133 @@ func WithdrawalFromConsensus(w *enginev1.Withdrawal) *Withdrawal {
 	}
 }
 
+func WithdrawalRequestsFromConsensus(ws []*enginev1.WithdrawalRequest) []*WithdrawalRequest {
+	result := make([]*WithdrawalRequest, len(ws))
+	for i, w := range ws {
+		result[i] = WithdrawalRequestFromConsensus(w)
+	}
+	return result
+}
+
+func WithdrawalRequestFromConsensus(w *enginev1.WithdrawalRequest) *WithdrawalRequest {
+	return &WithdrawalRequest{
+		SourceAddress:   hexutil.Encode(w.SourceAddress),
+		ValidatorPubkey: hexutil.Encode(w.ValidatorPubkey),
+		Amount:          fmt.Sprintf("%d", w.Amount),
+	}
+}
+
+func (w *WithdrawalRequest) ToConsensus() (*enginev1.WithdrawalRequest, error) {
+	src, err := bytesutil.DecodeHexWithLength(w.SourceAddress, common.AddressLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "SourceAddress")
+	}
+	pubkey, err := bytesutil.DecodeHexWithLength(w.ValidatorPubkey, fieldparams.BLSPubkeyLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "ValidatorPubkey")
+	}
+	amount, err := strconv.ParseUint(w.Amount, 10, 64)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "Amount")
+	}
+	return &enginev1.WithdrawalRequest{
+		SourceAddress:   src,
+		ValidatorPubkey: pubkey,
+		Amount:          amount,
+	}, nil
+}
+
+func ConsolidationRequestsFromConsensus(cs []*enginev1.ConsolidationRequest) []*ConsolidationRequest {
+	result := make([]*ConsolidationRequest, len(cs))
+	for i, c := range cs {
+		result[i] = ConsolidationRequestFromConsensus(c)
+	}
+	return result
+}
+
+func ConsolidationRequestFromConsensus(c *enginev1.ConsolidationRequest) *ConsolidationRequest {
+	return &ConsolidationRequest{
+		SourceAddress: hexutil.Encode(c.SourceAddress),
+		SourcePubkey:  hexutil.Encode(c.SourcePubkey),
+		TargetPubkey:  hexutil.Encode(c.TargetPubkey),
+	}
+}
+
+func (c *ConsolidationRequest) ToConsensus() (*enginev1.ConsolidationRequest, error) {
+	srcAddress, err := bytesutil.DecodeHexWithLength(c.SourceAddress, common.AddressLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "SourceAddress")
+	}
+	srcPubkey, err := bytesutil.DecodeHexWithLength(c.SourcePubkey, fieldparams.BLSPubkeyLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "SourcePubkey")
+	}
+	targetPubkey, err := bytesutil.DecodeHexWithLength(c.TargetPubkey, fieldparams.BLSPubkeyLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "TargetPubkey")
+	}
+	return &enginev1.ConsolidationRequest{
+		SourceAddress: srcAddress,
+		SourcePubkey:  srcPubkey,
+		TargetPubkey:  targetPubkey,
+	}, nil
+}
+
+func DepositRequestsFromConsensus(ds []*enginev1.DepositRequest) []*DepositRequest {
+	result := make([]*DepositRequest, len(ds))
+	for i, d := range ds {
+		result[i] = DepositRequestFromConsensus(d)
+	}
+	return result
+}
+
+func DepositRequestFromConsensus(d *enginev1.DepositRequest) *DepositRequest {
+	return &DepositRequest{
+		Pubkey:                hexutil.Encode(d.Pubkey),
+		WithdrawalCredentials: hexutil.Encode(d.WithdrawalCredentials),
+		Amount:                fmt.Sprintf("%d", d.Amount),
+		Signature:             hexutil.Encode(d.Signature),
+		Index:                 fmt.Sprintf("%d", d.Index),
+	}
+}
+
+func (d *DepositRequest) ToConsensus() (*enginev1.DepositRequest, error) {
+	pubkey, err := bytesutil.DecodeHexWithLength(d.Pubkey, fieldparams.BLSPubkeyLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "Pubkey")
+	}
+	withdrawalCredentials, err := bytesutil.DecodeHexWithLength(d.WithdrawalCredentials, fieldparams.RootLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "WithdrawalCredentials")
+	}
+	amount, err := strconv.ParseUint(d.Amount, 10, 64)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "Amount")
+	}
+	sig, err := bytesutil.DecodeHexWithLength(d.Signature, fieldparams.BLSSignatureLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "Signature")
+	}
+	index, err := strconv.ParseUint(d.Index, 10, 64)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "Index")
+	}
+	return &enginev1.DepositRequest{
+		Pubkey:                pubkey,
+		WithdrawalCredentials: withdrawalCredentials,
+		Amount:                amount,
+		Signature:             sig,
+		Index:                 index,
+	}, nil
+}
+
 func ProposerSlashingsToConsensus(src []*ProposerSlashing) ([]*eth.ProposerSlashing, error) {
 	if src == nil {
-		return nil, server.NewDecodeError(errNilValue, "ProposerSlashings")
+		return nil, errNilValue
 	}
 	err := slice.VerifyMaxLength(src, 16)
 	if err != nil {
-		return nil, server.NewDecodeError(err, "ProposerSlashings")
+		return nil, err
 	}
 	proposerSlashings := make([]*eth.ProposerSlashing, len(src))
 	for i, s := range src {
@@ -1024,11 +1028,11 @@ func ProposerSlashingFromConsensus(src *eth.ProposerSlashing) *ProposerSlashing
 
 func AttesterSlashingsToConsensus(src []*AttesterSlashing) ([]*eth.AttesterSlashing, error) {
 	if src == nil {
-		return nil, server.NewDecodeError(errNilValue, "AttesterSlashings")
+		return nil, errNilValue
 	}
 	err := slice.VerifyMaxLength(src, 2)
 	if err != nil {
-		return nil, server.NewDecodeError(err, "AttesterSlashings")
+		return nil, err
 	}
 
 	attesterSlashings := make([]*eth.AttesterSlashing, len(src))
@@ -1039,19 +1043,10 @@ func AttesterSlashingsToConsensus(src []*AttesterSlashing) ([]*eth.AttesterSlash
 		if s.Attestation1 == nil {
 			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d].Attestation1", i))
 		}
-
-		if s.Attestation1.Data == nil {
-			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d].Attestation1.Data", i))
-		}
-
 		if s.Attestation2 == nil {
 			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d].Attestation2", i))
 		}
 
-		if s.Attestation2.Data == nil {
-			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d].Attestation2.Data", i))
-		}
-
 		a1Sig, err := bytesutil.DecodeHexWithLength(s.Attestation1.Signature, fieldparams.BLSSignatureLength)
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d].Attestation1.Signature", i))
@@ -1068,7 +1063,6 @@ func AttesterSlashingsToConsensus(src []*AttesterSlashing) ([]*eth.AttesterSlash
 			}
 			a1AttestingIndices[j] = attestingIndex
 		}
-
 		a1Data, err := s.Attestation1.Data.ToConsensus()
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d].Attestation1.Data", i))
@@ -1166,11 +1160,11 @@ func AttesterSlashingFromConsensus(src *eth.AttesterSlashing) *AttesterSlashing
 
 func AttesterSlashingsElectraToConsensus(src []*AttesterSlashingElectra) ([]*eth.AttesterSlashingElectra, error) {
 	if src == nil {
-		return nil, server.NewDecodeError(errNilValue, "AttesterSlashingsElectra")
+		return nil, errNilValue
 	}
-	err := slice.VerifyMaxLength(src, fieldparams.MaxAttesterSlashingsElectra)
+	err := slice.VerifyMaxLength(src, 2)
 	if err != nil {
-		return nil, server.NewDecodeError(err, "AttesterSlashingsElectra")
+		return nil, err
 	}
 
 	attesterSlashings := make([]*eth.AttesterSlashingElectra, len(src))
@@ -1178,28 +1172,18 @@ func AttesterSlashingsElectraToConsensus(src []*AttesterSlashingElectra) ([]*eth
 		if s == nil {
 			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d]", i))
 		}
-
 		if s.Attestation1 == nil {
 			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d].Attestation1", i))
 		}
-
-		if s.Attestation1.Data == nil {
-			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d].Attestation1.Data", i))
-		}
-
 		if s.Attestation2 == nil {
 			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d].Attestation2", i))
 		}
 
-		if s.Attestation2.Data == nil {
-			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d].Attestation2.Data", i))
-		}
-
 		a1Sig, err := bytesutil.DecodeHexWithLength(s.Attestation1.Signature, fieldparams.BLSSignatureLength)
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d].Attestation1.Signature", i))
 		}
-		err = slice.VerifyMaxLength(s.Attestation1.AttestingIndices, params.BeaconConfig().MaxValidatorsPerCommittee*params.BeaconConfig().MaxCommitteesPerSlot)
+		err = slice.VerifyMaxLength(s.Attestation1.AttestingIndices, 2048)
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d].Attestation1.AttestingIndices", i))
 		}
@@ -1219,7 +1203,7 @@ func AttesterSlashingsElectraToConsensus(src []*AttesterSlashingElectra) ([]*eth
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d].Attestation2.Signature", i))
 		}
-		err = slice.VerifyMaxLength(s.Attestation2.AttestingIndices, params.BeaconConfig().MaxValidatorsPerCommittee*params.BeaconConfig().MaxCommitteesPerSlot)
+		err = slice.VerifyMaxLength(s.Attestation2.AttestingIndices, 2048)
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d].Attestation2.AttestingIndices", i))
 		}
@@ -1308,18 +1292,15 @@ func AttesterSlashingElectraFromConsensus(src *eth.AttesterSlashingElectra) *Att
 
 func AttsToConsensus(src []*Attestation) ([]*eth.Attestation, error) {
 	if src == nil {
-		return nil, server.NewDecodeError(errNilValue, "Attestations")
+		return nil, errNilValue
 	}
 	err := slice.VerifyMaxLength(src, 128)
 	if err != nil {
-		return nil, server.NewDecodeError(err, "Attestations")
+		return nil, err
 	}
 
 	atts := make([]*eth.Attestation, len(src))
 	for i, a := range src {
-		if a == nil {
-			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d]", i))
-		}
 		atts[i], err = a.ToConsensus()
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d]", i))
@@ -1338,18 +1319,15 @@ func AttsFromConsensus(src []*eth.Attestation) []*Attestation {
 
 func AttsElectraToConsensus(src []*AttestationElectra) ([]*eth.AttestationElectra, error) {
 	if src == nil {
-		return nil, server.NewDecodeError(errNilValue, "AttestationsElectra")
+		return nil, errNilValue
 	}
 	err := slice.VerifyMaxLength(src, 8)
 	if err != nil {
-		return nil, server.NewDecodeError(err, "AttestationsElectra")
+		return nil, err
 	}
 
 	atts := make([]*eth.AttestationElectra, len(src))
 	for i, a := range src {
-		if a == nil {
-			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d]", i))
-		}
 		atts[i], err = a.ToConsensus()
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d]", i))
@@ -1368,11 +1346,11 @@ func AttsElectraFromConsensus(src []*eth.AttestationElectra) []*AttestationElect
 
 func DepositsToConsensus(src []*Deposit) ([]*eth.Deposit, error) {
 	if src == nil {
-		return nil, server.NewDecodeError(errNilValue, "Deposits")
+		return nil, errNilValue
 	}
 	err := slice.VerifyMaxLength(src, 16)
 	if err != nil {
-		return nil, server.NewDecodeError(err, "Deposits")
+		return nil, err
 	}
 
 	deposits := make([]*eth.Deposit, len(src))
@@ -1444,18 +1422,15 @@ func DepositsFromConsensus(src []*eth.Deposit) []*Deposit {
 
 func SignedExitsToConsensus(src []*SignedVoluntaryExit) ([]*eth.SignedVoluntaryExit, error) {
 	if src == nil {
-		return nil, server.NewDecodeError(errNilValue, "SignedVoluntaryExits")
+		return nil, errNilValue
 	}
 	err := slice.VerifyMaxLength(src, 16)
 	if err != nil {
-		return nil, server.NewDecodeError(err, "SignedVoluntaryExits")
+		return nil, err
 	}
 
 	exits := make([]*eth.SignedVoluntaryExit, len(src))
 	for i, e := range src {
-		if e == nil {
-			return nil, server.NewDecodeError(errNilValue, fmt.Sprintf("[%d]", i))
-		}
 		exits[i], err = e.ToConsensus()
 		if err != nil {
 			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d]", i))
@@ -1500,15 +1475,12 @@ func DepositSnapshotFromConsensus(ds *eth.DepositSnapshot) *DepositSnapshot {
 	}
 }
 
-func PendingDepositsFromConsensus(ds []*eth.PendingDeposit) []*PendingDeposit {
-	deposits := make([]*PendingDeposit, len(ds))
+func PendingBalanceDepositsFromConsensus(ds []*eth.PendingBalanceDeposit) []*PendingBalanceDeposit {
+	deposits := make([]*PendingBalanceDeposit, len(ds))
 	for i, d := range ds {
-		deposits[i] = &PendingDeposit{
-			Pubkey:                hexutil.Encode(d.PublicKey),
-			WithdrawalCredentials: hexutil.Encode(d.WithdrawalCredentials),
-			Amount:                fmt.Sprintf("%d", d.Amount),
-			Signature:             hexutil.Encode(d.Signature),
-			Slot:                  fmt.Sprintf("%d", d.Slot),
+		deposits[i] = &PendingBalanceDeposit{
+			Index:  fmt.Sprintf("%d", d.Index),
+			Amount: fmt.Sprintf("%d", d.Amount),
 		}
 	}
 	return deposits
@@ -1536,44 +1508,3 @@ func PendingConsolidationsFromConsensus(cs []*eth.PendingConsolidation) []*Pendi
 	}
 	return consolidations
 }
-
-func HeadEventFromV1(event *ethv1.EventHead) *HeadEvent {
-	return &HeadEvent{
-		Slot:                      fmt.Sprintf("%d", event.Slot),
-		Block:                     hexutil.Encode(event.Block),
-		State:                     hexutil.Encode(event.State),
-		EpochTransition:           event.EpochTransition,
-		ExecutionOptimistic:       event.ExecutionOptimistic,
-		PreviousDutyDependentRoot: hexutil.Encode(event.PreviousDutyDependentRoot),
-		CurrentDutyDependentRoot:  hexutil.Encode(event.CurrentDutyDependentRoot),
-	}
-}
-
-func FinalizedCheckpointEventFromV1(event *ethv1.EventFinalizedCheckpoint) *FinalizedCheckpointEvent {
-	return &FinalizedCheckpointEvent{
-		Block:               hexutil.Encode(event.Block),
-		State:               hexutil.Encode(event.State),
-		Epoch:               fmt.Sprintf("%d", event.Epoch),
-		ExecutionOptimistic: event.ExecutionOptimistic,
-	}
-}
-
-func EventChainReorgFromV1(event *ethv1.EventChainReorg) *ChainReorgEvent {
-	return &ChainReorgEvent{
-		Slot:                fmt.Sprintf("%d", event.Slot),
-		Depth:               fmt.Sprintf("%d", event.Depth),
-		OldHeadBlock:        hexutil.Encode(event.OldHeadBlock),
-		NewHeadBlock:        hexutil.Encode(event.NewHeadBlock),
-		OldHeadState:        hexutil.Encode(event.OldHeadState),
-		NewHeadState:        hexutil.Encode(event.NewHeadState),
-		Epoch:               fmt.Sprintf("%d", event.Epoch),
-		ExecutionOptimistic: event.ExecutionOptimistic,
-	}
-}
-
-func SyncAggregateFromConsensus(sa *eth.SyncAggregate) *SyncAggregate {
-	return &SyncAggregate{
-		SyncCommitteeBits:      hexutil.Encode(sa.SyncCommitteeBits),
-		SyncCommitteeSignature: hexutil.Encode(sa.SyncCommitteeSignature),
-	}
-}

api/server/structs/conversions_blob.go

@@ -1,61 +0,0 @@
-package structs
-
-import (
-	"strconv"
-
-	"github.com/prysmaticlabs/prysm/v5/api/server"
-	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
-	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
-)
-
-func (sc *Sidecar) ToConsensus() (*eth.BlobSidecar, error) {
-	if sc == nil {
-		return nil, errNilValue
-	}
-
-	index, err := strconv.ParseUint(sc.Index, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Index")
-	}
-
-	blob, err := bytesutil.DecodeHexWithLength(sc.Blob, 131072)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Blob")
-	}
-
-	kzgCommitment, err := bytesutil.DecodeHexWithLength(sc.KzgCommitment, 48)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "KzgCommitment")
-	}
-
-	kzgProof, err := bytesutil.DecodeHexWithLength(sc.KzgProof, 48)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "KzgProof")
-	}
-
-	header, err := sc.SignedBeaconBlockHeader.ToConsensus()
-	if err != nil {
-		return nil, server.NewDecodeError(err, "SignedBeaconBlockHeader")
-	}
-
-	// decode the commitment inclusion proof
-	var commitmentInclusionProof [][]byte
-	for _, proof := range sc.CommitmentInclusionProof {
-		proofBytes, err := bytesutil.DecodeHexWithLength(proof, 32)
-		if err != nil {
-			return nil, server.NewDecodeError(err, "CommitmentInclusionProof")
-		}
-		commitmentInclusionProof = append(commitmentInclusionProof, proofBytes)
-	}
-
-	bsc := &eth.BlobSidecar{
-		Index:                    index,
-		Blob:                     blob,
-		KzgCommitment:            kzgCommitment,
-		KzgProof:                 kzgProof,
-		SignedBlockHeader:        header,
-		CommitmentInclusionProof: commitmentInclusionProof,
-	}
-
-	return bsc, nil
-}

api/server/structs/conversions_block_execution.go

@@ -1,973 +0,0 @@
-package structs
-
-import (
-	"fmt"
-	"strconv"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/prysmaticlabs/prysm/v5/api/server"
-	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
-	"github.com/prysmaticlabs/prysm/v5/config/params"
-	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
-	"github.com/prysmaticlabs/prysm/v5/container/slice"
-	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
-	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
-)
-
-// ----------------------------------------------------------------------------
-// Bellatrix
-// ----------------------------------------------------------------------------
-
-func ExecutionPayloadFromConsensus(payload *enginev1.ExecutionPayload) (*ExecutionPayload, error) {
-	baseFeePerGas, err := sszBytesToUint256String(payload.BaseFeePerGas)
-	if err != nil {
-		return nil, err
-	}
-	transactions := make([]string, len(payload.Transactions))
-	for i, tx := range payload.Transactions {
-		transactions[i] = hexutil.Encode(tx)
-	}
-
-	return &ExecutionPayload{
-		ParentHash:    hexutil.Encode(payload.ParentHash),
-		FeeRecipient:  hexutil.Encode(payload.FeeRecipient),
-		StateRoot:     hexutil.Encode(payload.StateRoot),
-		ReceiptsRoot:  hexutil.Encode(payload.ReceiptsRoot),
-		LogsBloom:     hexutil.Encode(payload.LogsBloom),
-		PrevRandao:    hexutil.Encode(payload.PrevRandao),
-		BlockNumber:   fmt.Sprintf("%d", payload.BlockNumber),
-		GasLimit:      fmt.Sprintf("%d", payload.GasLimit),
-		GasUsed:       fmt.Sprintf("%d", payload.GasUsed),
-		Timestamp:     fmt.Sprintf("%d", payload.Timestamp),
-		ExtraData:     hexutil.Encode(payload.ExtraData),
-		BaseFeePerGas: baseFeePerGas,
-		BlockHash:     hexutil.Encode(payload.BlockHash),
-		Transactions:  transactions,
-	}, nil
-}
-
-func (e *ExecutionPayload) ToConsensus() (*enginev1.ExecutionPayload, error) {
-	if e == nil {
-		return nil, server.NewDecodeError(errNilValue, "ExecutionPayload")
-	}
-	payloadParentHash, err := bytesutil.DecodeHexWithLength(e.ParentHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ParentHash")
-	}
-	payloadFeeRecipient, err := bytesutil.DecodeHexWithLength(e.FeeRecipient, fieldparams.FeeRecipientLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.FeeRecipient")
-	}
-	payloadStateRoot, err := bytesutil.DecodeHexWithLength(e.StateRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.StateRoot")
-	}
-	payloadReceiptsRoot, err := bytesutil.DecodeHexWithLength(e.ReceiptsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ReceiptsRoot")
-	}
-	payloadLogsBloom, err := bytesutil.DecodeHexWithLength(e.LogsBloom, fieldparams.LogsBloomLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.LogsBloom")
-	}
-	payloadPrevRandao, err := bytesutil.DecodeHexWithLength(e.PrevRandao, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.PrevRandao")
-	}
-	payloadBlockNumber, err := strconv.ParseUint(e.BlockNumber, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BlockNumber")
-	}
-	payloadGasLimit, err := strconv.ParseUint(e.GasLimit, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.GasLimit")
-	}
-	payloadGasUsed, err := strconv.ParseUint(e.GasUsed, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.GasUsed")
-	}
-	payloadTimestamp, err := strconv.ParseUint(e.Timestamp, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.Timestamp")
-	}
-	payloadExtraData, err := bytesutil.DecodeHexWithMaxLength(e.ExtraData, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ExtraData")
-	}
-	payloadBaseFeePerGas, err := bytesutil.Uint256ToSSZBytes(e.BaseFeePerGas)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BaseFeePerGas")
-	}
-	payloadBlockHash, err := bytesutil.DecodeHexWithLength(e.BlockHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BlockHash")
-	}
-	err = slice.VerifyMaxLength(e.Transactions, fieldparams.MaxTxsPerPayloadLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.Transactions")
-	}
-	payloadTxs := make([][]byte, len(e.Transactions))
-	for i, tx := range e.Transactions {
-		payloadTxs[i], err = bytesutil.DecodeHexWithMaxLength(tx, fieldparams.MaxBytesPerTxLength)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Transactions[%d]", i))
-		}
-	}
-	return &enginev1.ExecutionPayload{
-		ParentHash:    payloadParentHash,
-		FeeRecipient:  payloadFeeRecipient,
-		StateRoot:     payloadStateRoot,
-		ReceiptsRoot:  payloadReceiptsRoot,
-		LogsBloom:     payloadLogsBloom,
-		PrevRandao:    payloadPrevRandao,
-		BlockNumber:   payloadBlockNumber,
-		GasLimit:      payloadGasLimit,
-		GasUsed:       payloadGasUsed,
-		Timestamp:     payloadTimestamp,
-		ExtraData:     payloadExtraData,
-		BaseFeePerGas: payloadBaseFeePerGas,
-		BlockHash:     payloadBlockHash,
-		Transactions:  payloadTxs,
-	}, nil
-}
-
-func ExecutionPayloadHeaderFromConsensus(payload *enginev1.ExecutionPayloadHeader) (*ExecutionPayloadHeader, error) {
-	baseFeePerGas, err := sszBytesToUint256String(payload.BaseFeePerGas)
-	if err != nil {
-		return nil, err
-	}
-
-	return &ExecutionPayloadHeader{
-		ParentHash:       hexutil.Encode(payload.ParentHash),
-		FeeRecipient:     hexutil.Encode(payload.FeeRecipient),
-		StateRoot:        hexutil.Encode(payload.StateRoot),
-		ReceiptsRoot:     hexutil.Encode(payload.ReceiptsRoot),
-		LogsBloom:        hexutil.Encode(payload.LogsBloom),
-		PrevRandao:       hexutil.Encode(payload.PrevRandao),
-		BlockNumber:      fmt.Sprintf("%d", payload.BlockNumber),
-		GasLimit:         fmt.Sprintf("%d", payload.GasLimit),
-		GasUsed:          fmt.Sprintf("%d", payload.GasUsed),
-		Timestamp:        fmt.Sprintf("%d", payload.Timestamp),
-		ExtraData:        hexutil.Encode(payload.ExtraData),
-		BaseFeePerGas:    baseFeePerGas,
-		BlockHash:        hexutil.Encode(payload.BlockHash),
-		TransactionsRoot: hexutil.Encode(payload.TransactionsRoot),
-	}, nil
-}
-
-func (e *ExecutionPayloadHeader) ToConsensus() (*enginev1.ExecutionPayloadHeader, error) {
-	if e == nil {
-		return nil, server.NewDecodeError(errNilValue, "ExecutionPayloadHeader")
-	}
-	payloadParentHash, err := bytesutil.DecodeHexWithLength(e.ParentHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.ParentHash")
-	}
-	payloadFeeRecipient, err := bytesutil.DecodeHexWithLength(e.FeeRecipient, fieldparams.FeeRecipientLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.FeeRecipient")
-	}
-	payloadStateRoot, err := bytesutil.DecodeHexWithLength(e.StateRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.StateRoot")
-	}
-	payloadReceiptsRoot, err := bytesutil.DecodeHexWithLength(e.ReceiptsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.ReceiptsRoot")
-	}
-	payloadLogsBloom, err := bytesutil.DecodeHexWithLength(e.LogsBloom, fieldparams.LogsBloomLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.LogsBloom")
-	}
-	payloadPrevRandao, err := bytesutil.DecodeHexWithLength(e.PrevRandao, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.PrevRandao")
-	}
-	payloadBlockNumber, err := strconv.ParseUint(e.BlockNumber, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.BlockNumber")
-	}
-	payloadGasLimit, err := strconv.ParseUint(e.GasLimit, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.GasLimit")
-	}
-	payloadGasUsed, err := strconv.ParseUint(e.GasUsed, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.GasUsed")
-	}
-	payloadTimestamp, err := strconv.ParseUint(e.Timestamp, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.Timestamp")
-	}
-	payloadExtraData, err := bytesutil.DecodeHexWithMaxLength(e.ExtraData, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.ExtraData")
-	}
-	payloadBaseFeePerGas, err := bytesutil.Uint256ToSSZBytes(e.BaseFeePerGas)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.BaseFeePerGas")
-	}
-	payloadBlockHash, err := bytesutil.DecodeHexWithLength(e.BlockHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.BlockHash")
-	}
-	payloadTxsRoot, err := bytesutil.DecodeHexWithLength(e.TransactionsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.TransactionsRoot")
-	}
-
-	return &enginev1.ExecutionPayloadHeader{
-		ParentHash:       payloadParentHash,
-		FeeRecipient:     payloadFeeRecipient,
-		StateRoot:        payloadStateRoot,
-		ReceiptsRoot:     payloadReceiptsRoot,
-		LogsBloom:        payloadLogsBloom,
-		PrevRandao:       payloadPrevRandao,
-		BlockNumber:      payloadBlockNumber,
-		GasLimit:         payloadGasLimit,
-		GasUsed:          payloadGasUsed,
-		Timestamp:        payloadTimestamp,
-		ExtraData:        payloadExtraData,
-		BaseFeePerGas:    payloadBaseFeePerGas,
-		BlockHash:        payloadBlockHash,
-		TransactionsRoot: payloadTxsRoot,
-	}, nil
-}
-
-// ----------------------------------------------------------------------------
-// Capella
-// ----------------------------------------------------------------------------
-
-func ExecutionPayloadCapellaFromConsensus(payload *enginev1.ExecutionPayloadCapella) (*ExecutionPayloadCapella, error) {
-	baseFeePerGas, err := sszBytesToUint256String(payload.BaseFeePerGas)
-	if err != nil {
-		return nil, err
-	}
-	transactions := make([]string, len(payload.Transactions))
-	for i, tx := range payload.Transactions {
-		transactions[i] = hexutil.Encode(tx)
-	}
-
-	return &ExecutionPayloadCapella{
-		ParentHash:    hexutil.Encode(payload.ParentHash),
-		FeeRecipient:  hexutil.Encode(payload.FeeRecipient),
-		StateRoot:     hexutil.Encode(payload.StateRoot),
-		ReceiptsRoot:  hexutil.Encode(payload.ReceiptsRoot),
-		LogsBloom:     hexutil.Encode(payload.LogsBloom),
-		PrevRandao:    hexutil.Encode(payload.PrevRandao),
-		BlockNumber:   fmt.Sprintf("%d", payload.BlockNumber),
-		GasLimit:      fmt.Sprintf("%d", payload.GasLimit),
-		GasUsed:       fmt.Sprintf("%d", payload.GasUsed),
-		Timestamp:     fmt.Sprintf("%d", payload.Timestamp),
-		ExtraData:     hexutil.Encode(payload.ExtraData),
-		BaseFeePerGas: baseFeePerGas,
-		BlockHash:     hexutil.Encode(payload.BlockHash),
-		Transactions:  transactions,
-		Withdrawals:   WithdrawalsFromConsensus(payload.Withdrawals),
-	}, nil
-}
-
-func (e *ExecutionPayloadCapella) ToConsensus() (*enginev1.ExecutionPayloadCapella, error) {
-	if e == nil {
-		return nil, server.NewDecodeError(errNilValue, "ExecutionPayload")
-	}
-	payloadParentHash, err := bytesutil.DecodeHexWithLength(e.ParentHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ParentHash")
-	}
-	payloadFeeRecipient, err := bytesutil.DecodeHexWithLength(e.FeeRecipient, fieldparams.FeeRecipientLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.FeeRecipient")
-	}
-	payloadStateRoot, err := bytesutil.DecodeHexWithLength(e.StateRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.StateRoot")
-	}
-	payloadReceiptsRoot, err := bytesutil.DecodeHexWithLength(e.ReceiptsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ReceiptsRoot")
-	}
-	payloadLogsBloom, err := bytesutil.DecodeHexWithLength(e.LogsBloom, fieldparams.LogsBloomLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.LogsBloom")
-	}
-	payloadPrevRandao, err := bytesutil.DecodeHexWithLength(e.PrevRandao, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.PrevRandao")
-	}
-	payloadBlockNumber, err := strconv.ParseUint(e.BlockNumber, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BlockNumber")
-	}
-	payloadGasLimit, err := strconv.ParseUint(e.GasLimit, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.GasLimit")
-	}
-	payloadGasUsed, err := strconv.ParseUint(e.GasUsed, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.GasUsed")
-	}
-	payloadTimestamp, err := strconv.ParseUint(e.Timestamp, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.Timestamp")
-	}
-	payloadExtraData, err := bytesutil.DecodeHexWithMaxLength(e.ExtraData, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ExtraData")
-	}
-	payloadBaseFeePerGas, err := bytesutil.Uint256ToSSZBytes(e.BaseFeePerGas)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BaseFeePerGas")
-	}
-	payloadBlockHash, err := bytesutil.DecodeHexWithLength(e.BlockHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BlockHash")
-	}
-	err = slice.VerifyMaxLength(e.Transactions, fieldparams.MaxTxsPerPayloadLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.Transactions")
-	}
-	payloadTxs := make([][]byte, len(e.Transactions))
-	for i, tx := range e.Transactions {
-		payloadTxs[i], err = bytesutil.DecodeHexWithMaxLength(tx, fieldparams.MaxBytesPerTxLength)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Transactions[%d]", i))
-		}
-	}
-	err = slice.VerifyMaxLength(e.Withdrawals, fieldparams.MaxWithdrawalsPerPayload)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.Withdrawals")
-	}
-	withdrawals := make([]*enginev1.Withdrawal, len(e.Withdrawals))
-	for i, w := range e.Withdrawals {
-		withdrawalIndex, err := strconv.ParseUint(w.WithdrawalIndex, 10, 64)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Withdrawals[%d].WithdrawalIndex", i))
-		}
-		validatorIndex, err := strconv.ParseUint(w.ValidatorIndex, 10, 64)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Withdrawals[%d].ValidatorIndex", i))
-		}
-		address, err := bytesutil.DecodeHexWithLength(w.ExecutionAddress, common.AddressLength)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Withdrawals[%d].ExecutionAddress", i))
-		}
-		amount, err := strconv.ParseUint(w.Amount, 10, 64)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Withdrawals[%d].Amount", i))
-		}
-		withdrawals[i] = &enginev1.Withdrawal{
-			Index:          withdrawalIndex,
-			ValidatorIndex: primitives.ValidatorIndex(validatorIndex),
-			Address:        address,
-			Amount:         amount,
-		}
-	}
-	return &enginev1.ExecutionPayloadCapella{
-		ParentHash:    payloadParentHash,
-		FeeRecipient:  payloadFeeRecipient,
-		StateRoot:     payloadStateRoot,
-		ReceiptsRoot:  payloadReceiptsRoot,
-		LogsBloom:     payloadLogsBloom,
-		PrevRandao:    payloadPrevRandao,
-		BlockNumber:   payloadBlockNumber,
-		GasLimit:      payloadGasLimit,
-		GasUsed:       payloadGasUsed,
-		Timestamp:     payloadTimestamp,
-		ExtraData:     payloadExtraData,
-		BaseFeePerGas: payloadBaseFeePerGas,
-		BlockHash:     payloadBlockHash,
-		Transactions:  payloadTxs,
-		Withdrawals:   withdrawals,
-	}, nil
-}
-
-func ExecutionPayloadHeaderCapellaFromConsensus(payload *enginev1.ExecutionPayloadHeaderCapella) (*ExecutionPayloadHeaderCapella, error) {
-	baseFeePerGas, err := sszBytesToUint256String(payload.BaseFeePerGas)
-	if err != nil {
-		return nil, err
-	}
-
-	return &ExecutionPayloadHeaderCapella{
-		ParentHash:       hexutil.Encode(payload.ParentHash),
-		FeeRecipient:     hexutil.Encode(payload.FeeRecipient),
-		StateRoot:        hexutil.Encode(payload.StateRoot),
-		ReceiptsRoot:     hexutil.Encode(payload.ReceiptsRoot),
-		LogsBloom:        hexutil.Encode(payload.LogsBloom),
-		PrevRandao:       hexutil.Encode(payload.PrevRandao),
-		BlockNumber:      fmt.Sprintf("%d", payload.BlockNumber),
-		GasLimit:         fmt.Sprintf("%d", payload.GasLimit),
-		GasUsed:          fmt.Sprintf("%d", payload.GasUsed),
-		Timestamp:        fmt.Sprintf("%d", payload.Timestamp),
-		ExtraData:        hexutil.Encode(payload.ExtraData),
-		BaseFeePerGas:    baseFeePerGas,
-		BlockHash:        hexutil.Encode(payload.BlockHash),
-		TransactionsRoot: hexutil.Encode(payload.TransactionsRoot),
-		WithdrawalsRoot:  hexutil.Encode(payload.WithdrawalsRoot),
-	}, nil
-}
-
-func (e *ExecutionPayloadHeaderCapella) ToConsensus() (*enginev1.ExecutionPayloadHeaderCapella, error) {
-	if e == nil {
-		return nil, server.NewDecodeError(errNilValue, "ExecutionPayloadHeader")
-	}
-	payloadParentHash, err := bytesutil.DecodeHexWithLength(e.ParentHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.ParentHash")
-	}
-	payloadFeeRecipient, err := bytesutil.DecodeHexWithLength(e.FeeRecipient, fieldparams.FeeRecipientLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.FeeRecipient")
-	}
-	payloadStateRoot, err := bytesutil.DecodeHexWithLength(e.StateRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.StateRoot")
-	}
-	payloadReceiptsRoot, err := bytesutil.DecodeHexWithLength(e.ReceiptsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.ReceiptsRoot")
-	}
-	payloadLogsBloom, err := bytesutil.DecodeHexWithLength(e.LogsBloom, fieldparams.LogsBloomLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.LogsBloom")
-	}
-	payloadPrevRandao, err := bytesutil.DecodeHexWithLength(e.PrevRandao, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.PrevRandao")
-	}
-	payloadBlockNumber, err := strconv.ParseUint(e.BlockNumber, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.BlockNumber")
-	}
-	payloadGasLimit, err := strconv.ParseUint(e.GasLimit, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.GasLimit")
-	}
-	payloadGasUsed, err := strconv.ParseUint(e.GasUsed, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.GasUsed")
-	}
-	payloadTimestamp, err := strconv.ParseUint(e.Timestamp, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.Timestamp")
-	}
-	payloadExtraData, err := bytesutil.DecodeHexWithMaxLength(e.ExtraData, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.ExtraData")
-	}
-	payloadBaseFeePerGas, err := bytesutil.Uint256ToSSZBytes(e.BaseFeePerGas)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.BaseFeePerGas")
-	}
-	payloadBlockHash, err := bytesutil.DecodeHexWithMaxLength(e.BlockHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.BlockHash")
-	}
-	payloadTxsRoot, err := bytesutil.DecodeHexWithMaxLength(e.TransactionsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.TransactionsRoot")
-	}
-	payloadWithdrawalsRoot, err := bytesutil.DecodeHexWithMaxLength(e.WithdrawalsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.WithdrawalsRoot")
-	}
-	return &enginev1.ExecutionPayloadHeaderCapella{
-		ParentHash:       payloadParentHash,
-		FeeRecipient:     payloadFeeRecipient,
-		StateRoot:        payloadStateRoot,
-		ReceiptsRoot:     payloadReceiptsRoot,
-		LogsBloom:        payloadLogsBloom,
-		PrevRandao:       payloadPrevRandao,
-		BlockNumber:      payloadBlockNumber,
-		GasLimit:         payloadGasLimit,
-		GasUsed:          payloadGasUsed,
-		Timestamp:        payloadTimestamp,
-		ExtraData:        payloadExtraData,
-		BaseFeePerGas:    payloadBaseFeePerGas,
-		BlockHash:        payloadBlockHash,
-		TransactionsRoot: payloadTxsRoot,
-		WithdrawalsRoot:  payloadWithdrawalsRoot,
-	}, nil
-}
-
-// ----------------------------------------------------------------------------
-// Deneb
-// ----------------------------------------------------------------------------
-
-func ExecutionPayloadDenebFromConsensus(payload *enginev1.ExecutionPayloadDeneb) (*ExecutionPayloadDeneb, error) {
-	baseFeePerGas, err := sszBytesToUint256String(payload.BaseFeePerGas)
-	if err != nil {
-		return nil, err
-	}
-	transactions := make([]string, len(payload.Transactions))
-	for i, tx := range payload.Transactions {
-		transactions[i] = hexutil.Encode(tx)
-	}
-
-	return &ExecutionPayloadDeneb{
-		ParentHash:    hexutil.Encode(payload.ParentHash),
-		FeeRecipient:  hexutil.Encode(payload.FeeRecipient),
-		StateRoot:     hexutil.Encode(payload.StateRoot),
-		ReceiptsRoot:  hexutil.Encode(payload.ReceiptsRoot),
-		LogsBloom:     hexutil.Encode(payload.LogsBloom),
-		PrevRandao:    hexutil.Encode(payload.PrevRandao),
-		BlockNumber:   fmt.Sprintf("%d", payload.BlockNumber),
-		GasLimit:      fmt.Sprintf("%d", payload.GasLimit),
-		GasUsed:       fmt.Sprintf("%d", payload.GasUsed),
-		Timestamp:     fmt.Sprintf("%d", payload.Timestamp),
-		ExtraData:     hexutil.Encode(payload.ExtraData),
-		BaseFeePerGas: baseFeePerGas,
-		BlockHash:     hexutil.Encode(payload.BlockHash),
-		Transactions:  transactions,
-		Withdrawals:   WithdrawalsFromConsensus(payload.Withdrawals),
-		BlobGasUsed:   fmt.Sprintf("%d", payload.BlobGasUsed),
-		ExcessBlobGas: fmt.Sprintf("%d", payload.ExcessBlobGas),
-	}, nil
-}
-
-func (e *ExecutionPayloadDeneb) ToConsensus() (*enginev1.ExecutionPayloadDeneb, error) {
-	if e == nil {
-		return nil, server.NewDecodeError(errNilValue, "ExecutionPayload")
-	}
-	payloadParentHash, err := bytesutil.DecodeHexWithLength(e.ParentHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ParentHash")
-	}
-	payloadFeeRecipient, err := bytesutil.DecodeHexWithLength(e.FeeRecipient, fieldparams.FeeRecipientLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.FeeRecipient")
-	}
-	payloadStateRoot, err := bytesutil.DecodeHexWithLength(e.StateRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.StateRoot")
-	}
-	payloadReceiptsRoot, err := bytesutil.DecodeHexWithLength(e.ReceiptsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ReceiptsRoot")
-	}
-	payloadLogsBloom, err := bytesutil.DecodeHexWithLength(e.LogsBloom, fieldparams.LogsBloomLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.LogsBloom")
-	}
-	payloadPrevRandao, err := bytesutil.DecodeHexWithLength(e.PrevRandao, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.PrevRandao")
-	}
-	payloadBlockNumber, err := strconv.ParseUint(e.BlockNumber, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BlockNumber")
-	}
-	payloadGasLimit, err := strconv.ParseUint(e.GasLimit, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.GasLimit")
-	}
-	payloadGasUsed, err := strconv.ParseUint(e.GasUsed, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.GasUsed")
-	}
-	payloadTimestamp, err := strconv.ParseUint(e.Timestamp, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.Timestamp")
-	}
-	payloadExtraData, err := bytesutil.DecodeHexWithMaxLength(e.ExtraData, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ExtraData")
-	}
-	payloadBaseFeePerGas, err := bytesutil.Uint256ToSSZBytes(e.BaseFeePerGas)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BaseFeePerGas")
-	}
-	payloadBlockHash, err := bytesutil.DecodeHexWithLength(e.BlockHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BlockHash")
-	}
-	err = slice.VerifyMaxLength(e.Transactions, fieldparams.MaxTxsPerPayloadLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.Transactions")
-	}
-	txs := make([][]byte, len(e.Transactions))
-	for i, tx := range e.Transactions {
-		txs[i], err = bytesutil.DecodeHexWithMaxLength(tx, fieldparams.MaxBytesPerTxLength)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Transactions[%d]", i))
-		}
-	}
-	err = slice.VerifyMaxLength(e.Withdrawals, fieldparams.MaxWithdrawalsPerPayload)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.Withdrawals")
-	}
-	withdrawals := make([]*enginev1.Withdrawal, len(e.Withdrawals))
-	for i, w := range e.Withdrawals {
-		withdrawalIndex, err := strconv.ParseUint(w.WithdrawalIndex, 10, 64)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Withdrawals[%d].WithdrawalIndex", i))
-		}
-		validatorIndex, err := strconv.ParseUint(w.ValidatorIndex, 10, 64)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Withdrawals[%d].ValidatorIndex", i))
-		}
-		address, err := bytesutil.DecodeHexWithLength(w.ExecutionAddress, common.AddressLength)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Withdrawals[%d].ExecutionAddress", i))
-		}
-		amount, err := strconv.ParseUint(w.Amount, 10, 64)
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionPayload.Withdrawals[%d].Amount", i))
-		}
-		withdrawals[i] = &enginev1.Withdrawal{
-			Index:          withdrawalIndex,
-			ValidatorIndex: primitives.ValidatorIndex(validatorIndex),
-			Address:        address,
-			Amount:         amount,
-		}
-	}
-
-	payloadBlobGasUsed, err := strconv.ParseUint(e.BlobGasUsed, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BlobGasUsed")
-	}
-	payloadExcessBlobGas, err := strconv.ParseUint(e.ExcessBlobGas, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ExcessBlobGas")
-	}
-	return &enginev1.ExecutionPayloadDeneb{
-		ParentHash:    payloadParentHash,
-		FeeRecipient:  payloadFeeRecipient,
-		StateRoot:     payloadStateRoot,
-		ReceiptsRoot:  payloadReceiptsRoot,
-		LogsBloom:     payloadLogsBloom,
-		PrevRandao:    payloadPrevRandao,
-		BlockNumber:   payloadBlockNumber,
-		GasLimit:      payloadGasLimit,
-		GasUsed:       payloadGasUsed,
-		Timestamp:     payloadTimestamp,
-		ExtraData:     payloadExtraData,
-		BaseFeePerGas: payloadBaseFeePerGas,
-		BlockHash:     payloadBlockHash,
-		Transactions:  txs,
-		Withdrawals:   withdrawals,
-		BlobGasUsed:   payloadBlobGasUsed,
-		ExcessBlobGas: payloadExcessBlobGas,
-	}, nil
-}
-
-func ExecutionPayloadHeaderDenebFromConsensus(payload *enginev1.ExecutionPayloadHeaderDeneb) (*ExecutionPayloadHeaderDeneb, error) {
-	baseFeePerGas, err := sszBytesToUint256String(payload.BaseFeePerGas)
-	if err != nil {
-		return nil, err
-	}
-
-	return &ExecutionPayloadHeaderDeneb{
-		ParentHash:       hexutil.Encode(payload.ParentHash),
-		FeeRecipient:     hexutil.Encode(payload.FeeRecipient),
-		StateRoot:        hexutil.Encode(payload.StateRoot),
-		ReceiptsRoot:     hexutil.Encode(payload.ReceiptsRoot),
-		LogsBloom:        hexutil.Encode(payload.LogsBloom),
-		PrevRandao:       hexutil.Encode(payload.PrevRandao),
-		BlockNumber:      fmt.Sprintf("%d", payload.BlockNumber),
-		GasLimit:         fmt.Sprintf("%d", payload.GasLimit),
-		GasUsed:          fmt.Sprintf("%d", payload.GasUsed),
-		Timestamp:        fmt.Sprintf("%d", payload.Timestamp),
-		ExtraData:        hexutil.Encode(payload.ExtraData),
-		BaseFeePerGas:    baseFeePerGas,
-		BlockHash:        hexutil.Encode(payload.BlockHash),
-		TransactionsRoot: hexutil.Encode(payload.TransactionsRoot),
-		WithdrawalsRoot:  hexutil.Encode(payload.WithdrawalsRoot),
-		BlobGasUsed:      fmt.Sprintf("%d", payload.BlobGasUsed),
-		ExcessBlobGas:    fmt.Sprintf("%d", payload.ExcessBlobGas),
-	}, nil
-}
-
-func (e *ExecutionPayloadHeaderDeneb) ToConsensus() (*enginev1.ExecutionPayloadHeaderDeneb, error) {
-	if e == nil {
-		return nil, server.NewDecodeError(errNilValue, "ExecutionPayloadHeader")
-	}
-	payloadParentHash, err := bytesutil.DecodeHexWithLength(e.ParentHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.ParentHash")
-	}
-	payloadFeeRecipient, err := bytesutil.DecodeHexWithLength(e.FeeRecipient, fieldparams.FeeRecipientLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.FeeRecipient")
-	}
-	payloadStateRoot, err := bytesutil.DecodeHexWithLength(e.StateRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.StateRoot")
-	}
-	payloadReceiptsRoot, err := bytesutil.DecodeHexWithLength(e.ReceiptsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.ReceiptsRoot")
-	}
-	payloadLogsBloom, err := bytesutil.DecodeHexWithLength(e.LogsBloom, fieldparams.LogsBloomLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.LogsBloom")
-	}
-	payloadPrevRandao, err := bytesutil.DecodeHexWithLength(e.PrevRandao, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.PrevRandao")
-	}
-	payloadBlockNumber, err := strconv.ParseUint(e.BlockNumber, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.BlockNumber")
-	}
-	payloadGasLimit, err := strconv.ParseUint(e.GasLimit, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.GasLimit")
-	}
-	payloadGasUsed, err := strconv.ParseUint(e.GasUsed, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.GasUsed")
-	}
-	payloadTimestamp, err := strconv.ParseUint(e.Timestamp, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.Timestamp")
-	}
-	payloadExtraData, err := bytesutil.DecodeHexWithMaxLength(e.ExtraData, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.ExtraData")
-	}
-	payloadBaseFeePerGas, err := bytesutil.Uint256ToSSZBytes(e.BaseFeePerGas)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.BaseFeePerGas")
-	}
-	payloadBlockHash, err := bytesutil.DecodeHexWithLength(e.BlockHash, common.HashLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.BlockHash")
-	}
-	payloadTxsRoot, err := bytesutil.DecodeHexWithLength(e.TransactionsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.TransactionsRoot")
-	}
-	payloadWithdrawalsRoot, err := bytesutil.DecodeHexWithLength(e.WithdrawalsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayloadHeader.WithdrawalsRoot")
-	}
-	payloadBlobGasUsed, err := strconv.ParseUint(e.BlobGasUsed, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.BlobGasUsed")
-	}
-	payloadExcessBlobGas, err := strconv.ParseUint(e.ExcessBlobGas, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayload.ExcessBlobGas")
-	}
-	return &enginev1.ExecutionPayloadHeaderDeneb{
-		ParentHash:       payloadParentHash,
-		FeeRecipient:     payloadFeeRecipient,
-		StateRoot:        payloadStateRoot,
-		ReceiptsRoot:     payloadReceiptsRoot,
-		LogsBloom:        payloadLogsBloom,
-		PrevRandao:       payloadPrevRandao,
-		BlockNumber:      payloadBlockNumber,
-		GasLimit:         payloadGasLimit,
-		GasUsed:          payloadGasUsed,
-		Timestamp:        payloadTimestamp,
-		ExtraData:        payloadExtraData,
-		BaseFeePerGas:    payloadBaseFeePerGas,
-		BlockHash:        payloadBlockHash,
-		TransactionsRoot: payloadTxsRoot,
-		WithdrawalsRoot:  payloadWithdrawalsRoot,
-		BlobGasUsed:      payloadBlobGasUsed,
-		ExcessBlobGas:    payloadExcessBlobGas,
-	}, nil
-}
-
-// ----------------------------------------------------------------------------
-// Electra
-// ----------------------------------------------------------------------------
-
-var (
-	ExecutionPayloadElectraFromConsensus       = ExecutionPayloadDenebFromConsensus
-	ExecutionPayloadHeaderElectraFromConsensus = ExecutionPayloadHeaderDenebFromConsensus
-)
-
-func WithdrawalRequestsFromConsensus(ws []*enginev1.WithdrawalRequest) []*WithdrawalRequest {
-	result := make([]*WithdrawalRequest, len(ws))
-	for i, w := range ws {
-		result[i] = WithdrawalRequestFromConsensus(w)
-	}
-	return result
-}
-
-func WithdrawalRequestFromConsensus(w *enginev1.WithdrawalRequest) *WithdrawalRequest {
-	return &WithdrawalRequest{
-		SourceAddress:   hexutil.Encode(w.SourceAddress),
-		ValidatorPubkey: hexutil.Encode(w.ValidatorPubkey),
-		Amount:          fmt.Sprintf("%d", w.Amount),
-	}
-}
-
-func (w *WithdrawalRequest) ToConsensus() (*enginev1.WithdrawalRequest, error) {
-	if w == nil {
-		return nil, server.NewDecodeError(errNilValue, "WithdrawalRequest")
-	}
-	src, err := bytesutil.DecodeHexWithLength(w.SourceAddress, common.AddressLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "SourceAddress")
-	}
-	pubkey, err := bytesutil.DecodeHexWithLength(w.ValidatorPubkey, fieldparams.BLSPubkeyLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ValidatorPubkey")
-	}
-	amount, err := strconv.ParseUint(w.Amount, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Amount")
-	}
-	return &enginev1.WithdrawalRequest{
-		SourceAddress:   src,
-		ValidatorPubkey: pubkey,
-		Amount:          amount,
-	}, nil
-}
-
-func ConsolidationRequestsFromConsensus(cs []*enginev1.ConsolidationRequest) []*ConsolidationRequest {
-	result := make([]*ConsolidationRequest, len(cs))
-	for i, c := range cs {
-		result[i] = ConsolidationRequestFromConsensus(c)
-	}
-	return result
-}
-
-func ConsolidationRequestFromConsensus(c *enginev1.ConsolidationRequest) *ConsolidationRequest {
-	return &ConsolidationRequest{
-		SourceAddress: hexutil.Encode(c.SourceAddress),
-		SourcePubkey:  hexutil.Encode(c.SourcePubkey),
-		TargetPubkey:  hexutil.Encode(c.TargetPubkey),
-	}
-}
-
-func (c *ConsolidationRequest) ToConsensus() (*enginev1.ConsolidationRequest, error) {
-	if c == nil {
-		return nil, server.NewDecodeError(errNilValue, "ConsolidationRequest")
-	}
-	srcAddress, err := bytesutil.DecodeHexWithLength(c.SourceAddress, common.AddressLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "SourceAddress")
-	}
-	srcPubkey, err := bytesutil.DecodeHexWithLength(c.SourcePubkey, fieldparams.BLSPubkeyLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "SourcePubkey")
-	}
-	targetPubkey, err := bytesutil.DecodeHexWithLength(c.TargetPubkey, fieldparams.BLSPubkeyLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "TargetPubkey")
-	}
-	return &enginev1.ConsolidationRequest{
-		SourceAddress: srcAddress,
-		SourcePubkey:  srcPubkey,
-		TargetPubkey:  targetPubkey,
-	}, nil
-}
-
-func DepositRequestsFromConsensus(ds []*enginev1.DepositRequest) []*DepositRequest {
-	result := make([]*DepositRequest, len(ds))
-	for i, d := range ds {
-		result[i] = DepositRequestFromConsensus(d)
-	}
-	return result
-}
-
-func DepositRequestFromConsensus(d *enginev1.DepositRequest) *DepositRequest {
-	return &DepositRequest{
-		Pubkey:                hexutil.Encode(d.Pubkey),
-		WithdrawalCredentials: hexutil.Encode(d.WithdrawalCredentials),
-		Amount:                fmt.Sprintf("%d", d.Amount),
-		Signature:             hexutil.Encode(d.Signature),
-		Index:                 fmt.Sprintf("%d", d.Index),
-	}
-}
-
-func (d *DepositRequest) ToConsensus() (*enginev1.DepositRequest, error) {
-	if d == nil {
-		return nil, server.NewDecodeError(errNilValue, "DepositRequest")
-	}
-	pubkey, err := bytesutil.DecodeHexWithLength(d.Pubkey, fieldparams.BLSPubkeyLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Pubkey")
-	}
-	withdrawalCredentials, err := bytesutil.DecodeHexWithLength(d.WithdrawalCredentials, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "WithdrawalCredentials")
-	}
-	amount, err := strconv.ParseUint(d.Amount, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Amount")
-	}
-	sig, err := bytesutil.DecodeHexWithLength(d.Signature, fieldparams.BLSSignatureLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Signature")
-	}
-	index, err := strconv.ParseUint(d.Index, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Index")
-	}
-	return &enginev1.DepositRequest{
-		Pubkey:                pubkey,
-		WithdrawalCredentials: withdrawalCredentials,
-		Amount:                amount,
-		Signature:             sig,
-		Index:                 index,
-	}, nil
-}
-
-func ExecutionRequestsFromConsensus(er *enginev1.ExecutionRequests) *ExecutionRequests {
-	return &ExecutionRequests{
-		Deposits:       DepositRequestsFromConsensus(er.Deposits),
-		Withdrawals:    WithdrawalRequestsFromConsensus(er.Withdrawals),
-		Consolidations: ConsolidationRequestsFromConsensus(er.Consolidations),
-	}
-}
-
-func (e *ExecutionRequests) ToConsensus() (*enginev1.ExecutionRequests, error) {
-	if e == nil {
-		return nil, server.NewDecodeError(errNilValue, "ExecutionRequests")
-	}
-	var err error
-	if err = slice.VerifyMaxLength(e.Deposits, params.BeaconConfig().MaxDepositRequestsPerPayload); err != nil {
-		return nil, err
-	}
-	depositRequests := make([]*enginev1.DepositRequest, len(e.Deposits))
-	for i, d := range e.Deposits {
-		depositRequests[i], err = d.ToConsensus()
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionRequests.Deposits[%d]", i))
-		}
-	}
-
-	if err = slice.VerifyMaxLength(e.Withdrawals, params.BeaconConfig().MaxWithdrawalRequestsPerPayload); err != nil {
-		return nil, err
-	}
-	withdrawalRequests := make([]*enginev1.WithdrawalRequest, len(e.Withdrawals))
-	for i, w := range e.Withdrawals {
-		withdrawalRequests[i], err = w.ToConsensus()
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionRequests.Withdrawals[%d]", i))
-		}
-	}
-
-	if err = slice.VerifyMaxLength(e.Consolidations, params.BeaconConfig().MaxConsolidationsRequestsPerPayload); err != nil {
-		return nil, err
-	}
-	consolidationRequests := make([]*enginev1.ConsolidationRequest, len(e.Consolidations))
-	for i, c := range e.Consolidations {
-		consolidationRequests[i], err = c.ToConsensus()
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("ExecutionRequests.Consolidations[%d]", i))
-		}
-	}
-	return &enginev1.ExecutionRequests{
-		Deposits:       depositRequests,
-		Withdrawals:    withdrawalRequests,
-		Consolidations: consolidationRequests,
-	}, nil
-}
-
-// ----------------------------------------------------------------------------
-// Fulu
-// ----------------------------------------------------------------------------
-
-var (
-	ExecutionPayloadFuluFromConsensus       = ExecutionPayloadDenebFromConsensus
-	ExecutionPayloadHeaderFuluFromConsensus = ExecutionPayloadHeaderDenebFromConsensus
-	BeaconBlockFuluFromConsensus            = BeaconBlockElectraFromConsensus
-)

api/server/structs/conversions_block_execution_test.go

@@ -1,563 +0,0 @@
-package structs
-
-import (
-	"fmt"
-	"testing"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
-	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
-	"github.com/prysmaticlabs/prysm/v5/testing/require"
-)
-
-func fillByteSlice(sliceLength int, value byte) []byte {
-	bytes := make([]byte, sliceLength)
-
-	for index := range bytes {
-		bytes[index] = value
-	}
-
-	return bytes
-}
-
-// TestExecutionPayloadFromConsensus_HappyPath checks the
-// ExecutionPayloadFromConsensus function under normal conditions.
-func TestExecutionPayloadFromConsensus_HappyPath(t *testing.T) {
-	consensusPayload := &enginev1.ExecutionPayload{
-		ParentHash:    fillByteSlice(common.HashLength, 0xaa),
-		FeeRecipient:  fillByteSlice(20, 0xbb),
-		StateRoot:     fillByteSlice(32, 0xcc),
-		ReceiptsRoot:  fillByteSlice(32, 0xdd),
-		LogsBloom:     fillByteSlice(256, 0xee),
-		PrevRandao:    fillByteSlice(32, 0xff),
-		BlockNumber:   12345,
-		GasLimit:      15000000,
-		GasUsed:       8000000,
-		Timestamp:     1680000000,
-		ExtraData:     fillByteSlice(8, 0x11),
-		BaseFeePerGas: fillByteSlice(32, 0x01),
-		BlockHash:     fillByteSlice(common.HashLength, 0x22),
-		Transactions: [][]byte{
-			fillByteSlice(10, 0x33),
-			fillByteSlice(10, 0x44),
-		},
-	}
-
-	result, err := ExecutionPayloadFromConsensus(consensusPayload)
-	require.NoError(t, err)
-	require.NotNil(t, result)
-	require.Equal(t, hexutil.Encode(consensusPayload.ParentHash), result.ParentHash)
-	require.Equal(t, hexutil.Encode(consensusPayload.FeeRecipient), result.FeeRecipient)
-	require.Equal(t, hexutil.Encode(consensusPayload.StateRoot), result.StateRoot)
-	require.Equal(t, hexutil.Encode(consensusPayload.ReceiptsRoot), result.ReceiptsRoot)
-	require.Equal(t, fmt.Sprintf("%d", consensusPayload.BlockNumber), result.BlockNumber)
-}
-
-// TestExecutionPayload_ToConsensus_HappyPath checks the
-// (*ExecutionPayload).ToConsensus function under normal conditions.
-func TestExecutionPayload_ToConsensus_HappyPath(t *testing.T) {
-	payload := &ExecutionPayload{
-		ParentHash:    hexutil.Encode(fillByteSlice(common.HashLength, 0xaa)),
-		FeeRecipient:  hexutil.Encode(fillByteSlice(20, 0xbb)),
-		StateRoot:     hexutil.Encode(fillByteSlice(32, 0xcc)),
-		ReceiptsRoot:  hexutil.Encode(fillByteSlice(32, 0xdd)),
-		LogsBloom:     hexutil.Encode(fillByteSlice(256, 0xee)),
-		PrevRandao:    hexutil.Encode(fillByteSlice(32, 0xff)),
-		BlockNumber:   "12345",
-		GasLimit:      "15000000",
-		GasUsed:       "8000000",
-		Timestamp:     "1680000000",
-		ExtraData:     "0x11111111",
-		BaseFeePerGas: "1234",
-		BlockHash:     hexutil.Encode(fillByteSlice(common.HashLength, 0x22)),
-		Transactions: []string{
-			hexutil.Encode(fillByteSlice(10, 0x33)),
-			hexutil.Encode(fillByteSlice(10, 0x44)),
-		},
-	}
-
-	result, err := payload.ToConsensus()
-	require.NoError(t, err)
-	require.DeepEqual(t, result.ParentHash, fillByteSlice(common.HashLength, 0xaa))
-	require.DeepEqual(t, result.FeeRecipient, fillByteSlice(20, 0xbb))
-	require.DeepEqual(t, result.StateRoot, fillByteSlice(32, 0xcc))
-}
-
-// TestExecutionPayloadHeaderFromConsensus_HappyPath checks the
-// ExecutionPayloadHeaderFromConsensus function under normal conditions.
-func TestExecutionPayloadHeaderFromConsensus_HappyPath(t *testing.T) {
-	consensusHeader := &enginev1.ExecutionPayloadHeader{
-		ParentHash:       fillByteSlice(common.HashLength, 0xaa),
-		FeeRecipient:     fillByteSlice(20, 0xbb),
-		StateRoot:        fillByteSlice(32, 0xcc),
-		ReceiptsRoot:     fillByteSlice(32, 0xdd),
-		LogsBloom:        fillByteSlice(256, 0xee),
-		PrevRandao:       fillByteSlice(32, 0xff),
-		BlockNumber:      9999,
-		GasLimit:         5000000,
-		GasUsed:          2500000,
-		Timestamp:        1111111111,
-		ExtraData:        fillByteSlice(4, 0x12),
-		BaseFeePerGas:    fillByteSlice(32, 0x34),
-		BlockHash:        fillByteSlice(common.HashLength, 0x56),
-		TransactionsRoot: fillByteSlice(32, 0x78),
-	}
-
-	result, err := ExecutionPayloadHeaderFromConsensus(consensusHeader)
-	require.NoError(t, err)
-	require.NotNil(t, result)
-	require.Equal(t, hexutil.Encode(consensusHeader.ParentHash), result.ParentHash)
-	require.Equal(t, fmt.Sprintf("%d", consensusHeader.BlockNumber), result.BlockNumber)
-}
-
-// TestExecutionPayloadHeader_ToConsensus_HappyPath checks the
-// (*ExecutionPayloadHeader).ToConsensus function under normal conditions.
-func TestExecutionPayloadHeader_ToConsensus_HappyPath(t *testing.T) {
-	header := &ExecutionPayloadHeader{
-		ParentHash:       hexutil.Encode(fillByteSlice(common.HashLength, 0xaa)),
-		FeeRecipient:     hexutil.Encode(fillByteSlice(20, 0xbb)),
-		StateRoot:        hexutil.Encode(fillByteSlice(32, 0xcc)),
-		ReceiptsRoot:     hexutil.Encode(fillByteSlice(32, 0xdd)),
-		LogsBloom:        hexutil.Encode(fillByteSlice(256, 0xee)),
-		PrevRandao:       hexutil.Encode(fillByteSlice(32, 0xff)),
-		BlockNumber:      "9999",
-		GasLimit:         "5000000",
-		GasUsed:          "2500000",
-		Timestamp:        "1111111111",
-		ExtraData:        "0x1234abcd",
-		BaseFeePerGas:    "1234",
-		BlockHash:        hexutil.Encode(fillByteSlice(common.HashLength, 0x56)),
-		TransactionsRoot: hexutil.Encode(fillByteSlice(32, 0x78)),
-	}
-
-	result, err := header.ToConsensus()
-	require.NoError(t, err)
-	require.DeepEqual(t, hexutil.Encode(result.ParentHash), header.ParentHash)
-	require.DeepEqual(t, hexutil.Encode(result.FeeRecipient), header.FeeRecipient)
-	require.DeepEqual(t, hexutil.Encode(result.StateRoot), header.StateRoot)
-}
-
-// TestExecutionPayloadCapellaFromConsensus_HappyPath checks the
-// ExecutionPayloadCapellaFromConsensus function under normal conditions.
-func TestExecutionPayloadCapellaFromConsensus_HappyPath(t *testing.T) {
-	capellaPayload := &enginev1.ExecutionPayloadCapella{
-		ParentHash:    fillByteSlice(common.HashLength, 0xaa),
-		FeeRecipient:  fillByteSlice(20, 0xbb),
-		StateRoot:     fillByteSlice(32, 0xcc),
-		ReceiptsRoot:  fillByteSlice(32, 0xdd),
-		LogsBloom:     fillByteSlice(256, 0xee),
-		PrevRandao:    fillByteSlice(32, 0xff),
-		BlockNumber:   123,
-		GasLimit:      9876543,
-		GasUsed:       1234567,
-		Timestamp:     5555555,
-		ExtraData:     fillByteSlice(6, 0x11),
-		BaseFeePerGas: fillByteSlice(32, 0x22),
-		BlockHash:     fillByteSlice(common.HashLength, 0x33),
-		Transactions: [][]byte{
-			fillByteSlice(5, 0x44),
-		},
-		Withdrawals: []*enginev1.Withdrawal{
-			{
-				Index:          1,
-				ValidatorIndex: 2,
-				Address:        fillByteSlice(20, 0xaa),
-				Amount:         100,
-			},
-		},
-	}
-
-	result, err := ExecutionPayloadCapellaFromConsensus(capellaPayload)
-	require.NoError(t, err)
-	require.NotNil(t, result)
-	require.Equal(t, hexutil.Encode(capellaPayload.ParentHash), result.ParentHash)
-	require.Equal(t, len(capellaPayload.Transactions), len(result.Transactions))
-	require.Equal(t, len(capellaPayload.Withdrawals), len(result.Withdrawals))
-}
-
-// TestExecutionPayloadCapella_ToConsensus_HappyPath checks the
-// (*ExecutionPayloadCapella).ToConsensus function under normal conditions.
-func TestExecutionPayloadCapella_ToConsensus_HappyPath(t *testing.T) {
-	capella := &ExecutionPayloadCapella{
-		ParentHash:    hexutil.Encode(fillByteSlice(common.HashLength, 0xaa)),
-		FeeRecipient:  hexutil.Encode(fillByteSlice(20, 0xbb)),
-		StateRoot:     hexutil.Encode(fillByteSlice(32, 0xcc)),
-		ReceiptsRoot:  hexutil.Encode(fillByteSlice(32, 0xdd)),
-		LogsBloom:     hexutil.Encode(fillByteSlice(256, 0xee)),
-		PrevRandao:    hexutil.Encode(fillByteSlice(32, 0xff)),
-		BlockNumber:   "123",
-		GasLimit:      "9876543",
-		GasUsed:       "1234567",
-		Timestamp:     "5555555",
-		ExtraData:     hexutil.Encode(fillByteSlice(6, 0x11)),
-		BaseFeePerGas: "1234",
-		BlockHash:     hexutil.Encode(fillByteSlice(common.HashLength, 0x33)),
-		Transactions: []string{
-			hexutil.Encode(fillByteSlice(5, 0x44)),
-		},
-		Withdrawals: []*Withdrawal{
-			{
-				WithdrawalIndex:  "1",
-				ValidatorIndex:   "2",
-				ExecutionAddress: hexutil.Encode(fillByteSlice(20, 0xaa)),
-				Amount:           "100",
-			},
-		},
-	}
-
-	result, err := capella.ToConsensus()
-	require.NoError(t, err)
-	require.DeepEqual(t, hexutil.Encode(result.ParentHash), capella.ParentHash)
-	require.DeepEqual(t, hexutil.Encode(result.FeeRecipient), capella.FeeRecipient)
-	require.DeepEqual(t, hexutil.Encode(result.StateRoot), capella.StateRoot)
-}
-
-// TestExecutionPayloadDenebFromConsensus_HappyPath checks the
-// ExecutionPayloadDenebFromConsensus function under normal conditions.
-func TestExecutionPayloadDenebFromConsensus_HappyPath(t *testing.T) {
-	denebPayload := &enginev1.ExecutionPayloadDeneb{
-		ParentHash:    fillByteSlice(common.HashLength, 0xaa),
-		FeeRecipient:  fillByteSlice(20, 0xbb),
-		StateRoot:     fillByteSlice(32, 0xcc),
-		ReceiptsRoot:  fillByteSlice(32, 0xdd),
-		LogsBloom:     fillByteSlice(256, 0xee),
-		PrevRandao:    fillByteSlice(32, 0xff),
-		BlockNumber:   999,
-		GasLimit:      2222222,
-		GasUsed:       1111111,
-		Timestamp:     666666,
-		ExtraData:     fillByteSlice(6, 0x11),
-		BaseFeePerGas: fillByteSlice(32, 0x22),
-		BlockHash:     fillByteSlice(common.HashLength, 0x33),
-		Transactions: [][]byte{
-			fillByteSlice(5, 0x44),
-		},
-		Withdrawals: []*enginev1.Withdrawal{
-			{
-				Index:          1,
-				ValidatorIndex: 2,
-				Address:        fillByteSlice(20, 0xaa),
-				Amount:         100,
-			},
-		},
-		BlobGasUsed:   1234,
-		ExcessBlobGas: 5678,
-	}
-
-	result, err := ExecutionPayloadDenebFromConsensus(denebPayload)
-	require.NoError(t, err)
-	require.Equal(t, hexutil.Encode(denebPayload.ParentHash), result.ParentHash)
-	require.Equal(t, len(denebPayload.Transactions), len(result.Transactions))
-	require.Equal(t, len(denebPayload.Withdrawals), len(result.Withdrawals))
-	require.Equal(t, "1234", result.BlobGasUsed)
-	require.Equal(t, fmt.Sprintf("%d", denebPayload.BlockNumber), result.BlockNumber)
-}
-
-// TestExecutionPayloadDeneb_ToConsensus_HappyPath checks the
-// (*ExecutionPayloadDeneb).ToConsensus function under normal conditions.
-func TestExecutionPayloadDeneb_ToConsensus_HappyPath(t *testing.T) {
-	deneb := &ExecutionPayloadDeneb{
-		ParentHash:    hexutil.Encode(fillByteSlice(common.HashLength, 0xaa)),
-		FeeRecipient:  hexutil.Encode(fillByteSlice(20, 0xbb)),
-		StateRoot:     hexutil.Encode(fillByteSlice(32, 0xcc)),
-		ReceiptsRoot:  hexutil.Encode(fillByteSlice(32, 0xdd)),
-		LogsBloom:     hexutil.Encode(fillByteSlice(256, 0xee)),
-		PrevRandao:    hexutil.Encode(fillByteSlice(32, 0xff)),
-		BlockNumber:   "999",
-		GasLimit:      "2222222",
-		GasUsed:       "1111111",
-		Timestamp:     "666666",
-		ExtraData:     hexutil.Encode(fillByteSlice(6, 0x11)),
-		BaseFeePerGas: "1234",
-		BlockHash:     hexutil.Encode(fillByteSlice(common.HashLength, 0x33)),
-		Transactions: []string{
-			hexutil.Encode(fillByteSlice(5, 0x44)),
-		},
-		Withdrawals: []*Withdrawal{
-			{
-				WithdrawalIndex:  "1",
-				ValidatorIndex:   "2",
-				ExecutionAddress: hexutil.Encode(fillByteSlice(20, 0xaa)),
-				Amount:           "100",
-			},
-		},
-		BlobGasUsed:   "1234",
-		ExcessBlobGas: "5678",
-	}
-
-	result, err := deneb.ToConsensus()
-	require.NoError(t, err)
-	require.DeepEqual(t, hexutil.Encode(result.ParentHash), deneb.ParentHash)
-	require.DeepEqual(t, hexutil.Encode(result.FeeRecipient), deneb.FeeRecipient)
-	require.Equal(t, result.BlockNumber, uint64(999))
-}
-
-func TestExecutionPayloadHeaderCapellaFromConsensus_HappyPath(t *testing.T) {
-	capellaHeader := &enginev1.ExecutionPayloadHeaderCapella{
-		ParentHash:       fillByteSlice(common.HashLength, 0xaa),
-		FeeRecipient:     fillByteSlice(20, 0xbb),
-		StateRoot:        fillByteSlice(32, 0xcc),
-		ReceiptsRoot:     fillByteSlice(32, 0xdd),
-		LogsBloom:        fillByteSlice(256, 0xee),
-		PrevRandao:       fillByteSlice(32, 0xff),
-		BlockNumber:      555,
-		GasLimit:         1111111,
-		GasUsed:          222222,
-		Timestamp:        3333333333,
-		ExtraData:        fillByteSlice(4, 0x12),
-		BaseFeePerGas:    fillByteSlice(32, 0x34),
-		BlockHash:        fillByteSlice(common.HashLength, 0x56),
-		TransactionsRoot: fillByteSlice(32, 0x78),
-		WithdrawalsRoot:  fillByteSlice(32, 0x99),
-	}
-
-	result, err := ExecutionPayloadHeaderCapellaFromConsensus(capellaHeader)
-	require.NoError(t, err)
-	require.Equal(t, hexutil.Encode(capellaHeader.ParentHash), result.ParentHash)
-	require.DeepEqual(t, hexutil.Encode(capellaHeader.WithdrawalsRoot), result.WithdrawalsRoot)
-}
-
-func TestExecutionPayloadHeaderCapella_ToConsensus_HappyPath(t *testing.T) {
-	header := &ExecutionPayloadHeaderCapella{
-		ParentHash:       hexutil.Encode(fillByteSlice(common.HashLength, 0xaa)),
-		FeeRecipient:     hexutil.Encode(fillByteSlice(20, 0xbb)),
-		StateRoot:        hexutil.Encode(fillByteSlice(32, 0xcc)),
-		ReceiptsRoot:     hexutil.Encode(fillByteSlice(32, 0xdd)),
-		LogsBloom:        hexutil.Encode(fillByteSlice(256, 0xee)),
-		PrevRandao:       hexutil.Encode(fillByteSlice(32, 0xff)),
-		BlockNumber:      "555",
-		GasLimit:         "1111111",
-		GasUsed:          "222222",
-		Timestamp:        "3333333333",
-		ExtraData:        "0x1234abcd",
-		BaseFeePerGas:    "1234",
-		BlockHash:        hexutil.Encode(fillByteSlice(common.HashLength, 0x56)),
-		TransactionsRoot: hexutil.Encode(fillByteSlice(32, 0x78)),
-		WithdrawalsRoot:  hexutil.Encode(fillByteSlice(32, 0x99)),
-	}
-
-	result, err := header.ToConsensus()
-	require.NoError(t, err)
-	require.DeepEqual(t, hexutil.Encode(result.ParentHash), header.ParentHash)
-	require.DeepEqual(t, hexutil.Encode(result.FeeRecipient), header.FeeRecipient)
-	require.DeepEqual(t, hexutil.Encode(result.StateRoot), header.StateRoot)
-	require.DeepEqual(t, hexutil.Encode(result.ReceiptsRoot), header.ReceiptsRoot)
-	require.DeepEqual(t, hexutil.Encode(result.WithdrawalsRoot), header.WithdrawalsRoot)
-}
-
-func TestExecutionPayloadHeaderDenebFromConsensus_HappyPath(t *testing.T) {
-	denebHeader := &enginev1.ExecutionPayloadHeaderDeneb{
-		ParentHash:       fillByteSlice(common.HashLength, 0xaa),
-		FeeRecipient:     fillByteSlice(20, 0xbb),
-		StateRoot:        fillByteSlice(32, 0xcc),
-		ReceiptsRoot:     fillByteSlice(32, 0xdd),
-		LogsBloom:        fillByteSlice(256, 0xee),
-		PrevRandao:       fillByteSlice(32, 0xff),
-		BlockNumber:      999,
-		GasLimit:         5000000,
-		GasUsed:          2500000,
-		Timestamp:        4444444444,
-		ExtraData:        fillByteSlice(4, 0x12),
-		BaseFeePerGas:    fillByteSlice(32, 0x34),
-		BlockHash:        fillByteSlice(common.HashLength, 0x56),
-		TransactionsRoot: fillByteSlice(32, 0x78),
-		WithdrawalsRoot:  fillByteSlice(32, 0x99),
-		BlobGasUsed:      1234,
-		ExcessBlobGas:    5678,
-	}
-
-	result, err := ExecutionPayloadHeaderDenebFromConsensus(denebHeader)
-	require.NoError(t, err)
-	require.Equal(t, hexutil.Encode(denebHeader.ParentHash), result.ParentHash)
-	require.DeepEqual(t, hexutil.Encode(denebHeader.FeeRecipient), result.FeeRecipient)
-	require.DeepEqual(t, hexutil.Encode(denebHeader.StateRoot), result.StateRoot)
-	require.DeepEqual(t, fmt.Sprintf("%d", denebHeader.BlobGasUsed), result.BlobGasUsed)
-}
-
-func TestExecutionPayloadHeaderDeneb_ToConsensus_HappyPath(t *testing.T) {
-	header := &ExecutionPayloadHeaderDeneb{
-		ParentHash:       hexutil.Encode(fillByteSlice(common.HashLength, 0xaa)),
-		FeeRecipient:     hexutil.Encode(fillByteSlice(20, 0xbb)),
-		StateRoot:        hexutil.Encode(fillByteSlice(32, 0xcc)),
-		ReceiptsRoot:     hexutil.Encode(fillByteSlice(32, 0xdd)),
-		LogsBloom:        hexutil.Encode(fillByteSlice(256, 0xee)),
-		PrevRandao:       hexutil.Encode(fillByteSlice(32, 0xff)),
-		BlockNumber:      "999",
-		GasLimit:         "5000000",
-		GasUsed:          "2500000",
-		Timestamp:        "4444444444",
-		ExtraData:        "0x1234abcd",
-		BaseFeePerGas:    "1234",
-		BlockHash:        hexutil.Encode(fillByteSlice(common.HashLength, 0x56)),
-		TransactionsRoot: hexutil.Encode(fillByteSlice(32, 0x78)),
-		WithdrawalsRoot:  hexutil.Encode(fillByteSlice(32, 0x99)),
-		BlobGasUsed:      "1234",
-		ExcessBlobGas:    "5678",
-	}
-
-	result, err := header.ToConsensus()
-	require.NoError(t, err)
-	require.DeepEqual(t, hexutil.Encode(result.ParentHash), header.ParentHash)
-	require.DeepEqual(t, result.BlobGasUsed, uint64(1234))
-	require.DeepEqual(t, result.ExcessBlobGas, uint64(5678))
-	require.DeepEqual(t, result.BlockNumber, uint64(999))
-}
-
-func TestWithdrawalRequestsFromConsensus_HappyPath(t *testing.T) {
-	consensusRequests := []*enginev1.WithdrawalRequest{
-		{
-			SourceAddress:   fillByteSlice(20, 0xbb),
-			ValidatorPubkey: fillByteSlice(48, 0xbb),
-			Amount:          12345,
-		},
-		{
-			SourceAddress:   fillByteSlice(20, 0xcc),
-			ValidatorPubkey: fillByteSlice(48, 0xcc),
-			Amount:          54321,
-		},
-	}
-
-	result := WithdrawalRequestsFromConsensus(consensusRequests)
-	require.DeepEqual(t, len(result), len(consensusRequests))
-	require.DeepEqual(t, result[0].Amount, fmt.Sprintf("%d", consensusRequests[0].Amount))
-}
-
-func TestWithdrawalRequestFromConsensus_HappyPath(t *testing.T) {
-	req := &enginev1.WithdrawalRequest{
-		SourceAddress:   fillByteSlice(20, 0xbb),
-		ValidatorPubkey: fillByteSlice(48, 0xbb),
-		Amount:          42,
-	}
-	result := WithdrawalRequestFromConsensus(req)
-	require.NotNil(t, result)
-	require.DeepEqual(t, result.SourceAddress, hexutil.Encode(fillByteSlice(20, 0xbb)))
-}
-
-func TestWithdrawalRequest_ToConsensus_HappyPath(t *testing.T) {
-	withdrawalReq := &WithdrawalRequest{
-		SourceAddress:   hexutil.Encode(fillByteSlice(20, 111)),
-		ValidatorPubkey: hexutil.Encode(fillByteSlice(48, 123)),
-		Amount:          "12345",
-	}
-	result, err := withdrawalReq.ToConsensus()
-	require.NoError(t, err)
-	require.DeepEqual(t, result.Amount, uint64(12345))
-}
-
-func TestConsolidationRequestsFromConsensus_HappyPath(t *testing.T) {
-	consensusRequests := []*enginev1.ConsolidationRequest{
-		{
-			SourceAddress: fillByteSlice(20, 111),
-			SourcePubkey:  fillByteSlice(48, 112),
-			TargetPubkey:  fillByteSlice(48, 113),
-		},
-	}
-	result := ConsolidationRequestsFromConsensus(consensusRequests)
-	require.DeepEqual(t, len(result), len(consensusRequests))
-	require.DeepEqual(t, result[0].SourceAddress, "0x6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f")
-}
-
-func TestDepositRequestsFromConsensus_HappyPath(t *testing.T) {
-	ds := []*enginev1.DepositRequest{
-		{
-			Pubkey:                fillByteSlice(48, 0xbb),
-			WithdrawalCredentials: fillByteSlice(32, 0xdd),
-			Amount:                98765,
-			Signature:             fillByteSlice(96, 0xff),
-			Index:                 111,
-		},
-	}
-	result := DepositRequestsFromConsensus(ds)
-	require.DeepEqual(t, len(result), len(ds))
-	require.DeepEqual(t, result[0].Amount, "98765")
-}
-
-func TestDepositRequest_ToConsensus_HappyPath(t *testing.T) {
-	req := &DepositRequest{
-		Pubkey:                hexutil.Encode(fillByteSlice(48, 0xbb)),
-		WithdrawalCredentials: hexutil.Encode(fillByteSlice(32, 0xaa)),
-		Amount:                "123",
-		Signature:             hexutil.Encode(fillByteSlice(96, 0xdd)),
-		Index:                 "456",
-	}
-
-	result, err := req.ToConsensus()
-	require.NoError(t, err)
-	require.DeepEqual(t, result.Amount, uint64(123))
-	require.DeepEqual(t, result.Signature, fillByteSlice(96, 0xdd))
-}
-
-func TestExecutionRequestsFromConsensus_HappyPath(t *testing.T) {
-	er := &enginev1.ExecutionRequests{
-		Deposits: []*enginev1.DepositRequest{
-			{
-				Pubkey:                fillByteSlice(48, 0xba),
-				WithdrawalCredentials: fillByteSlice(32, 0xaa),
-				Amount:                33,
-				Signature:             fillByteSlice(96, 0xff),
-				Index:                 44,
-			},
-		},
-		Withdrawals: []*enginev1.WithdrawalRequest{
-			{
-				SourceAddress:   fillByteSlice(20, 0xaa),
-				ValidatorPubkey: fillByteSlice(48, 0xba),
-				Amount:          555,
-			},
-		},
-		Consolidations: []*enginev1.ConsolidationRequest{
-			{
-				SourceAddress: fillByteSlice(20, 0xdd),
-				SourcePubkey:  fillByteSlice(48, 0xdd),
-				TargetPubkey:  fillByteSlice(48, 0xcc),
-			},
-		},
-	}
-
-	result := ExecutionRequestsFromConsensus(er)
-	require.NotNil(t, result)
-	require.Equal(t, 1, len(result.Deposits))
-	require.Equal(t, "33", result.Deposits[0].Amount)
-	require.Equal(t, 1, len(result.Withdrawals))
-	require.Equal(t, "555", result.Withdrawals[0].Amount)
-	require.Equal(t, 1, len(result.Consolidations))
-	require.Equal(t, "0xcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc", result.Consolidations[0].TargetPubkey)
-}
-
-func TestExecutionRequests_ToConsensus_HappyPath(t *testing.T) {
-	execReq := &ExecutionRequests{
-		Deposits: []*DepositRequest{
-			{
-				Pubkey:                hexutil.Encode(fillByteSlice(48, 0xbb)),
-				WithdrawalCredentials: hexutil.Encode(fillByteSlice(32, 0xaa)),
-				Amount:                "33",
-				Signature:             hexutil.Encode(fillByteSlice(96, 0xff)),
-				Index:                 "44",
-			},
-		},
-		Withdrawals: []*WithdrawalRequest{
-			{
-				SourceAddress:   hexutil.Encode(fillByteSlice(20, 0xdd)),
-				ValidatorPubkey: hexutil.Encode(fillByteSlice(48, 0xbb)),
-				Amount:          "555",
-			},
-		},
-		Consolidations: []*ConsolidationRequest{
-			{
-				SourceAddress: hexutil.Encode(fillByteSlice(20, 0xcc)),
-				SourcePubkey:  hexutil.Encode(fillByteSlice(48, 0xbb)),
-				TargetPubkey:  hexutil.Encode(fillByteSlice(48, 0xcc)),
-			},
-		},
-	}
-
-	result, err := execReq.ToConsensus()
-	require.NoError(t, err)
-
-	require.Equal(t, 1, len(result.Deposits))
-	require.Equal(t, uint64(33), result.Deposits[0].Amount)
-	require.Equal(t, 1, len(result.Withdrawals))
-	require.Equal(t, uint64(555), result.Withdrawals[0].Amount)
-	require.Equal(t, 1, len(result.Consolidations))
-	require.DeepEqual(t, fillByteSlice(48, 0xcc), result.Consolidations[0].TargetPubkey)
-}

api/server/structs/conversions_lightclient.go

@@ -1,229 +0,0 @@
-package structs
-
-import (
-	"encoding/json"
-	"fmt"
-
-	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/pkg/errors"
-	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
-	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
-	"github.com/prysmaticlabs/prysm/v5/runtime/version"
-)
-
-func LightClientUpdateFromConsensus(update interfaces.LightClientUpdate) (*LightClientUpdate, error) {
-	attestedHeader, err := lightClientHeaderToJSON(update.AttestedHeader())
-	if err != nil {
-		return nil, errors.Wrap(err, "could not marshal attested light client header")
-	}
-	finalizedHeader, err := lightClientHeaderToJSON(update.FinalizedHeader())
-	if err != nil {
-		return nil, errors.Wrap(err, "could not marshal finalized light client header")
-	}
-
-	var scBranch [][32]byte
-	var finalityBranch [][32]byte
-	if update.Version() >= version.Electra {
-		scb, err := update.NextSyncCommitteeBranchElectra()
-		if err != nil {
-			return nil, err
-		}
-		scBranch = scb[:]
-		fb, err := update.FinalityBranchElectra()
-		if err != nil {
-			return nil, err
-		}
-		finalityBranch = fb[:]
-	} else {
-		scb, err := update.NextSyncCommitteeBranch()
-		if err != nil {
-			return nil, err
-		}
-		scBranch = scb[:]
-		fb, err := update.FinalityBranch()
-		if err != nil {
-			return nil, err
-		}
-		finalityBranch = fb[:]
-	}
-
-	return &LightClientUpdate{
-		AttestedHeader:          attestedHeader,
-		NextSyncCommittee:       SyncCommitteeFromConsensus(update.NextSyncCommittee()),
-		NextSyncCommitteeBranch: branchToJSON(scBranch),
-		FinalizedHeader:         finalizedHeader,
-		FinalityBranch:          branchToJSON(finalityBranch),
-		SyncAggregate:           SyncAggregateFromConsensus(update.SyncAggregate()),
-		SignatureSlot:           fmt.Sprintf("%d", update.SignatureSlot()),
-	}, nil
-}
-
-func LightClientFinalityUpdateFromConsensus(update interfaces.LightClientFinalityUpdate) (*LightClientFinalityUpdate, error) {
-	attestedHeader, err := lightClientHeaderToJSON(update.AttestedHeader())
-	if err != nil {
-		return nil, errors.Wrap(err, "could not marshal attested light client header")
-	}
-	finalizedHeader, err := lightClientHeaderToJSON(update.FinalizedHeader())
-	if err != nil {
-		return nil, errors.Wrap(err, "could not marshal finalized light client header")
-	}
-
-	var finalityBranch [][32]byte
-	if update.Version() >= version.Electra {
-		b, err := update.FinalityBranchElectra()
-		if err != nil {
-			return nil, err
-		}
-		finalityBranch = b[:]
-	} else {
-		b, err := update.FinalityBranch()
-		if err != nil {
-			return nil, err
-		}
-		finalityBranch = b[:]
-	}
-
-	return &LightClientFinalityUpdate{
-		AttestedHeader:  attestedHeader,
-		FinalizedHeader: finalizedHeader,
-		FinalityBranch:  branchToJSON(finalityBranch),
-		SyncAggregate:   SyncAggregateFromConsensus(update.SyncAggregate()),
-		SignatureSlot:   fmt.Sprintf("%d", update.SignatureSlot()),
-	}, nil
-}
-
-func LightClientOptimisticUpdateFromConsensus(update interfaces.LightClientOptimisticUpdate) (*LightClientOptimisticUpdate, error) {
-	attestedHeader, err := lightClientHeaderToJSON(update.AttestedHeader())
-	if err != nil {
-		return nil, errors.Wrap(err, "could not marshal attested light client header")
-	}
-
-	return &LightClientOptimisticUpdate{
-		AttestedHeader: attestedHeader,
-		SyncAggregate:  SyncAggregateFromConsensus(update.SyncAggregate()),
-		SignatureSlot:  fmt.Sprintf("%d", update.SignatureSlot()),
-	}, nil
-}
-
-func branchToJSON[S [][32]byte](branchBytes S) []string {
-	if branchBytes == nil {
-		return nil
-	}
-	branch := make([]string, len(branchBytes))
-	for i, root := range branchBytes {
-		branch[i] = hexutil.Encode(root[:])
-	}
-	return branch
-}
-
-func lightClientHeaderToJSON(header interfaces.LightClientHeader) (json.RawMessage, error) {
-	// In the case that a finalizedHeader is nil.
-	if header == nil {
-		return nil, nil
-	}
-
-	var result any
-
-	switch v := header.Version(); v {
-	case version.Altair:
-		result = &LightClientHeader{Beacon: BeaconBlockHeaderFromConsensus(header.Beacon())}
-	case version.Capella:
-		exInterface, err := header.Execution()
-		if err != nil {
-			return nil, err
-		}
-		ex, ok := exInterface.Proto().(*enginev1.ExecutionPayloadHeaderCapella)
-		if !ok {
-			return nil, fmt.Errorf("execution data is not %T", &enginev1.ExecutionPayloadHeaderCapella{})
-		}
-		execution, err := ExecutionPayloadHeaderCapellaFromConsensus(ex)
-		if err != nil {
-			return nil, err
-		}
-		executionBranch, err := header.ExecutionBranch()
-		if err != nil {
-			return nil, err
-		}
-		result = &LightClientHeaderCapella{
-			Beacon:          BeaconBlockHeaderFromConsensus(header.Beacon()),
-			Execution:       execution,
-			ExecutionBranch: branchToJSON(executionBranch[:]),
-		}
-	case version.Deneb:
-		exInterface, err := header.Execution()
-		if err != nil {
-			return nil, err
-		}
-		ex, ok := exInterface.Proto().(*enginev1.ExecutionPayloadHeaderDeneb)
-		if !ok {
-			return nil, fmt.Errorf("execution data is not %T", &enginev1.ExecutionPayloadHeaderDeneb{})
-		}
-		execution, err := ExecutionPayloadHeaderDenebFromConsensus(ex)
-		if err != nil {
-			return nil, err
-		}
-		executionBranch, err := header.ExecutionBranch()
-		if err != nil {
-			return nil, err
-		}
-		result = &LightClientHeaderDeneb{
-			Beacon:          BeaconBlockHeaderFromConsensus(header.Beacon()),
-			Execution:       execution,
-			ExecutionBranch: branchToJSON(executionBranch[:]),
-		}
-	case version.Electra:
-		exInterface, err := header.Execution()
-		if err != nil {
-			return nil, err
-		}
-		ex, ok := exInterface.Proto().(*enginev1.ExecutionPayloadHeaderDeneb)
-		if !ok {
-			return nil, fmt.Errorf("execution data is not %T", &enginev1.ExecutionPayloadHeaderDeneb{})
-		}
-		execution, err := ExecutionPayloadHeaderElectraFromConsensus(ex)
-		if err != nil {
-			return nil, err
-		}
-		executionBranch, err := header.ExecutionBranch()
-		if err != nil {
-			return nil, err
-		}
-		result = &LightClientHeaderDeneb{
-			Beacon:          BeaconBlockHeaderFromConsensus(header.Beacon()),
-			Execution:       execution,
-			ExecutionBranch: branchToJSON(executionBranch[:]),
-		}
-	default:
-		return nil, fmt.Errorf("unsupported header version %s", version.String(v))
-	}
-
-	return json.Marshal(result)
-}
-
-func LightClientBootstrapFromConsensus(bootstrap interfaces.LightClientBootstrap) (*LightClientBootstrap, error) {
-	header, err := lightClientHeaderToJSON(bootstrap.Header())
-	if err != nil {
-		return nil, errors.Wrap(err, "could not marshal light client header")
-	}
-
-	var scBranch [][32]byte
-	if bootstrap.Version() >= version.Electra {
-		b, err := bootstrap.CurrentSyncCommitteeBranchElectra()
-		if err != nil {
-			return nil, err
-		}
-		scBranch = b[:]
-	} else {
-		b, err := bootstrap.CurrentSyncCommitteeBranch()
-		if err != nil {
-			return nil, err
-		}
-		scBranch = b[:]
-	}
-
-	return &LightClientBootstrap{
-		Header:                     header,
-		CurrentSyncCommittee:       SyncCommitteeFromConsensus(bootstrap.CurrentSyncCommittee()),
-		CurrentSyncCommitteeBranch: branchToJSON(scBranch),
-	}, nil
-}

api/server/structs/conversions_state.go

@@ -11,10 +11,6 @@ import (
 
 var errPayloadHeaderNotFound = errors.New("expected payload header not found")
 
-// ----------------------------------------------------------------------------
-// Phase 0
-// ----------------------------------------------------------------------------
-
 func BeaconStateFromConsensus(st beaconState.BeaconState) (*BeaconState, error) {
 	srcBr := st.BlockRoots()
 	br := make([]string, len(srcBr))
@@ -101,10 +97,6 @@ func BeaconStateFromConsensus(st beaconState.BeaconState) (*BeaconState, error)
 	}, nil
 }
 
-// ----------------------------------------------------------------------------
-// Altair
-// ----------------------------------------------------------------------------
-
 func BeaconStateAltairFromConsensus(st beaconState.BeaconState) (*BeaconStateAltair, error) {
 	srcBr := st.BlockRoots()
 	br := make([]string, len(srcBr))
@@ -210,10 +202,6 @@ func BeaconStateAltairFromConsensus(st beaconState.BeaconState) (*BeaconStateAlt
 	}, nil
 }
 
-// ----------------------------------------------------------------------------
-// Bellatrix
-// ----------------------------------------------------------------------------
-
 func BeaconStateBellatrixFromConsensus(st beaconState.BeaconState) (*BeaconStateBellatrix, error) {
 	srcBr := st.BlockRoots()
 	br := make([]string, len(srcBr))
@@ -332,10 +320,6 @@ func BeaconStateBellatrixFromConsensus(st beaconState.BeaconState) (*BeaconState
 	}, nil
 }
 
-// ----------------------------------------------------------------------------
-// Capella
-// ----------------------------------------------------------------------------
-
 func BeaconStateCapellaFromConsensus(st beaconState.BeaconState) (*BeaconStateCapella, error) {
 	srcBr := st.BlockRoots()
 	br := make([]string, len(srcBr))
@@ -473,10 +457,6 @@ func BeaconStateCapellaFromConsensus(st beaconState.BeaconState) (*BeaconStateCa
 	}, nil
 }
 
-// ----------------------------------------------------------------------------
-// Deneb
-// ----------------------------------------------------------------------------
-
 func BeaconStateDenebFromConsensus(st beaconState.BeaconState) (*BeaconStateDeneb, error) {
 	srcBr := st.BlockRoots()
 	br := make([]string, len(srcBr))
@@ -614,10 +594,6 @@ func BeaconStateDenebFromConsensus(st beaconState.BeaconState) (*BeaconStateDene
 	}, nil
 }
 
-// ----------------------------------------------------------------------------
-// Electra
-// ----------------------------------------------------------------------------
-
 func BeaconStateElectraFromConsensus(st beaconState.BeaconState) (*BeaconStateElectra, error) {
 	srcBr := st.BlockRoots()
 	br := make([]string, len(srcBr))
@@ -698,7 +674,7 @@ func BeaconStateElectraFromConsensus(st beaconState.BeaconState) (*BeaconStateEl
 	if err != nil {
 		return nil, err
 	}
-	srcPayload, ok := execData.Proto().(*enginev1.ExecutionPayloadHeaderDeneb)
+	srcPayload, ok := execData.Proto().(*enginev1.ExecutionPayloadHeaderElectra)
 	if !ok {
 		return nil, errPayloadHeaderNotFound
 	}
@@ -746,7 +722,7 @@ func BeaconStateElectraFromConsensus(st beaconState.BeaconState) (*BeaconStateEl
 	if err != nil {
 		return nil, err
 	}
-	pbd, err := st.PendingDeposits()
+	pbd, err := st.PendingBalanceDeposits()
 	if err != nil {
 		return nil, err
 	}
@@ -794,193 +770,7 @@ func BeaconStateElectraFromConsensus(st beaconState.BeaconState) (*BeaconStateEl
 		EarliestExitEpoch:             fmt.Sprintf("%d", eee),
 		ConsolidationBalanceToConsume: fmt.Sprintf("%d", cbtc),
 		EarliestConsolidationEpoch:    fmt.Sprintf("%d", ece),
-		PendingDeposits:               PendingDepositsFromConsensus(pbd),
-		PendingPartialWithdrawals:     PendingPartialWithdrawalsFromConsensus(ppw),
-		PendingConsolidations:         PendingConsolidationsFromConsensus(pc),
-	}, nil
-}
-
-// ----------------------------------------------------------------------------
-// Fulu
-// ----------------------------------------------------------------------------
-
-func BeaconStateFuluFromConsensus(st beaconState.BeaconState) (*BeaconStateFulu, error) {
-	srcBr := st.BlockRoots()
-	br := make([]string, len(srcBr))
-	for i, r := range srcBr {
-		br[i] = hexutil.Encode(r)
-	}
-	srcSr := st.StateRoots()
-	sr := make([]string, len(srcSr))
-	for i, r := range srcSr {
-		sr[i] = hexutil.Encode(r)
-	}
-	srcHr, err := st.HistoricalRoots()
-	if err != nil {
-		return nil, err
-	}
-	hr := make([]string, len(srcHr))
-	for i, r := range srcHr {
-		hr[i] = hexutil.Encode(r)
-	}
-	srcVotes := st.Eth1DataVotes()
-	votes := make([]*Eth1Data, len(srcVotes))
-	for i, e := range srcVotes {
-		votes[i] = Eth1DataFromConsensus(e)
-	}
-	srcVals := st.Validators()
-	vals := make([]*Validator, len(srcVals))
-	for i, v := range srcVals {
-		vals[i] = ValidatorFromConsensus(v)
-	}
-	srcBals := st.Balances()
-	bals := make([]string, len(srcBals))
-	for i, b := range srcBals {
-		bals[i] = fmt.Sprintf("%d", b)
-	}
-	srcRm := st.RandaoMixes()
-	rm := make([]string, len(srcRm))
-	for i, m := range srcRm {
-		rm[i] = hexutil.Encode(m)
-	}
-	srcSlashings := st.Slashings()
-	slashings := make([]string, len(srcSlashings))
-	for i, s := range srcSlashings {
-		slashings[i] = fmt.Sprintf("%d", s)
-	}
-	srcPrevPart, err := st.PreviousEpochParticipation()
-	if err != nil {
-		return nil, err
-	}
-	prevPart := make([]string, len(srcPrevPart))
-	for i, p := range srcPrevPart {
-		prevPart[i] = fmt.Sprintf("%d", p)
-	}
-	srcCurrPart, err := st.CurrentEpochParticipation()
-	if err != nil {
-		return nil, err
-	}
-	currPart := make([]string, len(srcCurrPart))
-	for i, p := range srcCurrPart {
-		currPart[i] = fmt.Sprintf("%d", p)
-	}
-	srcIs, err := st.InactivityScores()
-	if err != nil {
-		return nil, err
-	}
-	is := make([]string, len(srcIs))
-	for i, s := range srcIs {
-		is[i] = fmt.Sprintf("%d", s)
-	}
-	currSc, err := st.CurrentSyncCommittee()
-	if err != nil {
-		return nil, err
-	}
-	nextSc, err := st.NextSyncCommittee()
-	if err != nil {
-		return nil, err
-	}
-	execData, err := st.LatestExecutionPayloadHeader()
-	if err != nil {
-		return nil, err
-	}
-	srcPayload, ok := execData.Proto().(*enginev1.ExecutionPayloadHeaderDeneb)
-	if !ok {
-		return nil, errPayloadHeaderNotFound
-	}
-	payload, err := ExecutionPayloadHeaderElectraFromConsensus(srcPayload)
-	if err != nil {
-		return nil, err
-	}
-	srcHs, err := st.HistoricalSummaries()
-	if err != nil {
-		return nil, err
-	}
-	hs := make([]*HistoricalSummary, len(srcHs))
-	for i, s := range srcHs {
-		hs[i] = HistoricalSummaryFromConsensus(s)
-	}
-	nwi, err := st.NextWithdrawalIndex()
-	if err != nil {
-		return nil, err
-	}
-	nwvi, err := st.NextWithdrawalValidatorIndex()
-	if err != nil {
-		return nil, err
-	}
-	drsi, err := st.DepositRequestsStartIndex()
-	if err != nil {
-		return nil, err
-	}
-	dbtc, err := st.DepositBalanceToConsume()
-	if err != nil {
-		return nil, err
-	}
-	ebtc, err := st.ExitBalanceToConsume()
-	if err != nil {
-		return nil, err
-	}
-	eee, err := st.EarliestExitEpoch()
-	if err != nil {
-		return nil, err
-	}
-	cbtc, err := st.ConsolidationBalanceToConsume()
-	if err != nil {
-		return nil, err
-	}
-	ece, err := st.EarliestConsolidationEpoch()
-	if err != nil {
-		return nil, err
-	}
-	pbd, err := st.PendingDeposits()
-	if err != nil {
-		return nil, err
-	}
-	ppw, err := st.PendingPartialWithdrawals()
-	if err != nil {
-		return nil, err
-	}
-	pc, err := st.PendingConsolidations()
-	if err != nil {
-		return nil, err
-	}
-
-	return &BeaconStateFulu{
-		GenesisTime:                   fmt.Sprintf("%d", st.GenesisTime()),
-		GenesisValidatorsRoot:         hexutil.Encode(st.GenesisValidatorsRoot()),
-		Slot:                          fmt.Sprintf("%d", st.Slot()),
-		Fork:                          ForkFromConsensus(st.Fork()),
-		LatestBlockHeader:             BeaconBlockHeaderFromConsensus(st.LatestBlockHeader()),
-		BlockRoots:                    br,
-		StateRoots:                    sr,
-		HistoricalRoots:               hr,
-		Eth1Data:                      Eth1DataFromConsensus(st.Eth1Data()),
-		Eth1DataVotes:                 votes,
-		Eth1DepositIndex:              fmt.Sprintf("%d", st.Eth1DepositIndex()),
-		Validators:                    vals,
-		Balances:                      bals,
-		RandaoMixes:                   rm,
-		Slashings:                     slashings,
-		PreviousEpochParticipation:    prevPart,
-		CurrentEpochParticipation:     currPart,
-		JustificationBits:             hexutil.Encode(st.JustificationBits()),
-		PreviousJustifiedCheckpoint:   CheckpointFromConsensus(st.PreviousJustifiedCheckpoint()),
-		CurrentJustifiedCheckpoint:    CheckpointFromConsensus(st.CurrentJustifiedCheckpoint()),
-		FinalizedCheckpoint:           CheckpointFromConsensus(st.FinalizedCheckpoint()),
-		InactivityScores:              is,
-		CurrentSyncCommittee:          SyncCommitteeFromConsensus(currSc),
-		NextSyncCommittee:             SyncCommitteeFromConsensus(nextSc),
-		LatestExecutionPayloadHeader:  payload,
-		NextWithdrawalIndex:           fmt.Sprintf("%d", nwi),
-		NextWithdrawalValidatorIndex:  fmt.Sprintf("%d", nwvi),
-		HistoricalSummaries:           hs,
-		DepositRequestsStartIndex:     fmt.Sprintf("%d", drsi),
-		DepositBalanceToConsume:       fmt.Sprintf("%d", dbtc),
-		ExitBalanceToConsume:          fmt.Sprintf("%d", ebtc),
-		EarliestExitEpoch:             fmt.Sprintf("%d", eee),
-		ConsolidationBalanceToConsume: fmt.Sprintf("%d", cbtc),
-		EarliestConsolidationEpoch:    fmt.Sprintf("%d", ece),
-		PendingDeposits:               PendingDepositsFromConsensus(pbd),
+		PendingBalanceDeposits:        PendingBalanceDepositsFromConsensus(pbd),
 		PendingPartialWithdrawals:     PendingPartialWithdrawalsFromConsensus(ppw),
 		PendingConsolidations:         PendingConsolidationsFromConsensus(pc),
 	}, nil

api/server/structs/conversions_test.go

@@ -24,96 +24,3 @@ func TestDepositSnapshotFromConsensus(t *testing.T) {
 	require.Equal(t, "0x1234", res.ExecutionBlockHash)
 	require.Equal(t, "67890", res.ExecutionBlockHeight)
 }
-
-func TestSignedBLSToExecutionChange_ToConsensus(t *testing.T) {
-	s := &SignedBLSToExecutionChange{Message: nil, Signature: ""}
-	_, err := s.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestSignedValidatorRegistration_ToConsensus(t *testing.T) {
-	s := &SignedValidatorRegistration{Message: nil, Signature: ""}
-	_, err := s.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestSignedContributionAndProof_ToConsensus(t *testing.T) {
-	s := &SignedContributionAndProof{Message: nil, Signature: ""}
-	_, err := s.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestContributionAndProof_ToConsensus(t *testing.T) {
-	c := &ContributionAndProof{
-		Contribution:    nil,
-		AggregatorIndex: "invalid",
-		SelectionProof:  "",
-	}
-	_, err := c.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestSignedAggregateAttestationAndProof_ToConsensus(t *testing.T) {
-	s := &SignedAggregateAttestationAndProof{Message: nil, Signature: ""}
-	_, err := s.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestAggregateAttestationAndProof_ToConsensus(t *testing.T) {
-	a := &AggregateAttestationAndProof{
-		AggregatorIndex: "1",
-		Aggregate:       nil,
-		SelectionProof:  "",
-	}
-	_, err := a.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestAttestation_ToConsensus(t *testing.T) {
-	a := &Attestation{
-		AggregationBits: "0x10",
-		Data:            nil,
-		Signature:       "",
-	}
-	_, err := a.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestSingleAttestation_ToConsensus(t *testing.T) {
-	s := &SingleAttestation{
-		CommitteeIndex: "1",
-		AttesterIndex:  "1",
-		Data:           nil,
-		Signature:      "",
-	}
-	_, err := s.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestSignedVoluntaryExit_ToConsensus(t *testing.T) {
-	s := &SignedVoluntaryExit{Message: nil, Signature: ""}
-	_, err := s.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestProposerSlashing_ToConsensus(t *testing.T) {
-	p := &ProposerSlashing{SignedHeader1: nil, SignedHeader2: nil}
-	_, err := p.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestAttesterSlashing_ToConsensus(t *testing.T) {
-	a := &AttesterSlashing{Attestation1: nil, Attestation2: nil}
-	_, err := a.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}
-
-func TestIndexedAttestation_ToConsensus(t *testing.T) {
-	a := &IndexedAttestation{
-		AttestingIndices: []string{"1"},
-		Data:             nil,
-		Signature:        "invalid",
-	}
-	_, err := a.ToConsensus()
-	require.ErrorContains(t, errNilValue.Error(), err)
-}

api/server/structs/endpoints_beacon.go

@@ -21,12 +21,11 @@ type GetCommitteesResponse struct {
 }
 
 type ListAttestationsResponse struct {
-	Version string          `json:"version,omitempty"`
-	Data    json.RawMessage `json:"data"`
+	Data []*Attestation `json:"data"`
 }
 
 type SubmitAttestationsRequest struct {
-	Data json.RawMessage `json:"data"`
+	Data []*Attestation `json:"data"`
 }
 
 type ListVoluntaryExitsResponse struct {
@@ -134,13 +133,6 @@ type GetBlockAttestationsResponse struct {
 	Data                []*Attestation `json:"data"`
 }
 
-type GetBlockAttestationsV2Response struct {
-	Version             string          `json:"version"`
-	ExecutionOptimistic bool            `json:"execution_optimistic"`
-	Finalized           bool            `json:"finalized"`
-	Data                json.RawMessage `json:"data"` // Accepts both `Attestation` and `AttestationElectra` types
-}
-
 type GetStateRootResponse struct {
 	ExecutionOptimistic bool       `json:"execution_optimistic"`
 	Finalized           bool       `json:"finalized"`
@@ -177,8 +169,7 @@ type BLSToExecutionChangesPoolResponse struct {
 }
 
 type GetAttesterSlashingsResponse struct {
-	Version string          `json:"version,omitempty"`
-	Data    json.RawMessage `json:"data"` // Accepts both `[]*AttesterSlashing` and `[]*AttesterSlashingElectra` types
+	Data []*AttesterSlashing `json:"data"`
 }
 
 type GetProposerSlashingsResponse struct {
@@ -250,17 +241,3 @@ type ChainHead struct {
 	PreviousJustifiedBlockRoot string `json:"previous_justified_block_root"`
 	OptimisticStatus           bool   `json:"optimistic_status"`
 }
-
-type GetPendingDepositsResponse struct {
-	Version             string            `json:"version"`
-	ExecutionOptimistic bool              `json:"execution_optimistic"`
-	Finalized           bool              `json:"finalized"`
-	Data                []*PendingDeposit `json:"data"`
-}
-
-type GetPendingPartialWithdrawalsResponse struct {
-	Version             string                      `json:"version"`
-	ExecutionOptimistic bool                        `json:"execution_optimistic"`
-	Finalized           bool                        `json:"finalized"`
-	Data                []*PendingPartialWithdrawal `json:"data"`
-}

api/server/structs/endpoints_blob.go

@@ -1,10 +1,7 @@
 package structs
 
 type SidecarsResponse struct {
-	Version             string     `json:"version"`
-	Data                []*Sidecar `json:"data"`
-	ExecutionOptimistic bool       `json:"execution_optimistic"`
-	Finalized           bool       `json:"finalized"`
+	Data []*Sidecar `json:"data"`
 }
 
 type Sidecar struct {
@@ -15,12 +12,3 @@ type Sidecar struct {
 	KzgProof                 string                   `json:"kzg_proof"`
 	CommitmentInclusionProof []string                 `json:"kzg_commitment_inclusion_proof"`
 }
-
-type BlobSidecars struct {
-	Sidecars []*Sidecar `json:"sidecars"`
-}
-
-type PublishBlobsRequest struct {
-	BlobSidecars *BlobSidecars `json:"blob_sidecars"`
-	BlockRoot    string        `json:"block_root"`
-}

api/server/structs/endpoints_debug.go

@@ -54,5 +54,4 @@ type ForkChoiceNodeExtraData struct {
 	Balance                  string `json:"balance"`
 	ExecutionOptimistic      bool   `json:"execution_optimistic"`
 	TimeStamp                string `json:"timestamp"`
-	Target                   string `json:"target"`
 }

api/server/structs/endpoints_events.go

@@ -96,7 +96,21 @@ type LightClientFinalityUpdateEvent struct {
 	Data    *LightClientFinalityUpdate `json:"data"`
 }
 
+type LightClientFinalityUpdate struct {
+	AttestedHeader  *BeaconBlockHeader `json:"attested_header"`
+	FinalizedHeader *BeaconBlockHeader `json:"finalized_header"`
+	FinalityBranch  []string           `json:"finality_branch"`
+	SyncAggregate   *SyncAggregate     `json:"sync_aggregate"`
+	SignatureSlot   string             `json:"signature_slot"`
+}
+
 type LightClientOptimisticUpdateEvent struct {
 	Version string                       `json:"version"`
 	Data    *LightClientOptimisticUpdate `json:"data"`
 }
+
+type LightClientOptimisticUpdate struct {
+	AttestedHeader *BeaconBlockHeader `json:"attested_header"`
+	SyncAggregate  *SyncAggregate     `json:"sync_aggregate"`
+	SignatureSlot  string             `json:"signature_slot"`
+}

api/server/structs/endpoints_lightclient.go

@@ -1,73 +1,35 @@
 package structs
 
-import "encoding/json"
-
 type LightClientHeader struct {
 	Beacon *BeaconBlockHeader `json:"beacon"`
 }
 
-type LightClientHeaderCapella struct {
-	Beacon          *BeaconBlockHeader             `json:"beacon"`
-	Execution       *ExecutionPayloadHeaderCapella `json:"execution"`
-	ExecutionBranch []string                       `json:"execution_branch"`
-}
-
-type LightClientHeaderDeneb struct {
-	Beacon          *BeaconBlockHeader           `json:"beacon"`
-	Execution       *ExecutionPayloadHeaderDeneb `json:"execution"`
-	ExecutionBranch []string                     `json:"execution_branch"`
-}
-
-type LightClientBootstrap struct {
-	Header                     json.RawMessage `json:"header"`
-	CurrentSyncCommittee       *SyncCommittee  `json:"current_sync_committee"`
-	CurrentSyncCommitteeBranch []string        `json:"current_sync_committee_branch"`
-}
-
-type LightClientUpdate struct {
-	AttestedHeader          json.RawMessage `json:"attested_header"`
-	NextSyncCommittee       *SyncCommittee  `json:"next_sync_committee,omitempty"`
-	FinalizedHeader         json.RawMessage `json:"finalized_header,omitempty"`
-	SyncAggregate           *SyncAggregate  `json:"sync_aggregate"`
-	NextSyncCommitteeBranch []string        `json:"next_sync_committee_branch,omitempty"`
-	FinalityBranch          []string        `json:"finality_branch,omitempty"`
-	SignatureSlot           string          `json:"signature_slot"`
-}
-
-type LightClientFinalityUpdate struct {
-	AttestedHeader  json.RawMessage `json:"attested_header"`
-	FinalizedHeader json.RawMessage `json:"finalized_header"`
-	FinalityBranch  []string        `json:"finality_branch"`
-	SyncAggregate   *SyncAggregate  `json:"sync_aggregate"`
-	SignatureSlot   string          `json:"signature_slot"`
-}
-
-type LightClientOptimisticUpdate struct {
-	AttestedHeader json.RawMessage `json:"attested_header"`
-	SyncAggregate  *SyncAggregate  `json:"sync_aggregate"`
-	SignatureSlot  string          `json:"signature_slot"`
-}
-
 type LightClientBootstrapResponse struct {
 	Version string                `json:"version"`
 	Data    *LightClientBootstrap `json:"data"`
 }
 
-type LightClientUpdateResponse struct {
+type LightClientBootstrap struct {
+	Header                     *LightClientHeader `json:"header"`
+	CurrentSyncCommittee       *SyncCommittee     `json:"current_sync_committee"`
+	CurrentSyncCommitteeBranch []string           `json:"current_sync_committee_branch"`
+}
+
+type LightClientUpdate struct {
+	AttestedHeader          *BeaconBlockHeader `json:"attested_header"`
+	NextSyncCommittee       *SyncCommittee     `json:"next_sync_committee,omitempty"`
+	FinalizedHeader         *BeaconBlockHeader `json:"finalized_header,omitempty"`
+	SyncAggregate           *SyncAggregate     `json:"sync_aggregate"`
+	NextSyncCommitteeBranch []string           `json:"next_sync_committee_branch,omitempty"`
+	FinalityBranch          []string           `json:"finality_branch,omitempty"`
+	SignatureSlot           string             `json:"signature_slot"`
+}
+
+type LightClientUpdateWithVersion struct {
 	Version string             `json:"version"`
 	Data    *LightClientUpdate `json:"data"`
 }
 
-type LightClientFinalityUpdateResponse struct {
-	Version string                     `json:"version"`
-	Data    *LightClientFinalityUpdate `json:"data"`
-}
-
-type LightClientOptimisticUpdateResponse struct {
-	Version string                       `json:"version"`
-	Data    *LightClientOptimisticUpdate `json:"data"`
-}
-
 type LightClientUpdatesByRangeResponse struct {
-	Updates []*LightClientUpdateResponse `json:"updates"`
+	Updates []*LightClientUpdateWithVersion `json:"updates"`
 }

api/server/structs/endpoints_validator.go

@@ -7,8 +7,7 @@ import (
 )
 
 type AggregateAttestationResponse struct {
-	Version string          `json:"version,omitempty"`
-	Data    json.RawMessage `json:"data"`
+	Data *Attestation `json:"data"`
 }
 
 type SubmitContributionAndProofsRequest struct {
@@ -16,7 +15,7 @@ type SubmitContributionAndProofsRequest struct {
 }
 
 type SubmitAggregateAndProofsRequest struct {
-	Data []json.RawMessage `json:"data"`
+	Data []*SignedAggregateAttestationAndProof `json:"data"`
 }
 
 type SubmitSyncCommitteeSubscriptionsRequest struct {

api/server/structs/other.go

@@ -36,13 +36,6 @@ type AttestationElectra struct {
 	CommitteeBits   string           `json:"committee_bits"`
 }
 
-type SingleAttestation struct {
-	CommitteeIndex string           `json:"committee_index"`
-	AttesterIndex  string           `json:"attester_index"`
-	Data           *AttestationData `json:"data"`
-	Signature      string           `json:"signature"`
-}
-
 type AttestationData struct {
 	Slot            string      `json:"slot"`
 	CommitteeIndex  string      `json:"index"`
@@ -244,12 +237,29 @@ type Withdrawal struct {
 	Amount           string `json:"amount"`
 }
 
-type PendingDeposit struct {
+type DepositRequest struct {
 	Pubkey                string `json:"pubkey"`
 	WithdrawalCredentials string `json:"withdrawal_credentials"`
 	Amount                string `json:"amount"`
 	Signature             string `json:"signature"`
-	Slot                  string `json:"slot"`
+	Index                 string `json:"index"`
+}
+
+type WithdrawalRequest struct {
+	SourceAddress   string `json:"source_address"`
+	ValidatorPubkey string `json:"validator_pubkey"`
+	Amount          string `json:"amount"`
+}
+
+type ConsolidationRequest struct {
+	SourceAddress string `json:"source_address"`
+	SourcePubkey  string `json:"source_pubkey"`
+	TargetPubkey  string `json:"target_pubkey"`
+}
+
+type PendingBalanceDeposit struct {
+	Index  string `json:"index"`
+	Amount string `json:"amount"`
 }
 
 type PendingPartialWithdrawal struct {

api/server/structs/state.go

@@ -142,81 +142,41 @@ type BeaconStateDeneb struct {
 }
 
 type BeaconStateElectra struct {
-	GenesisTime                   string                       `json:"genesis_time"`
-	GenesisValidatorsRoot         string                       `json:"genesis_validators_root"`
-	Slot                          string                       `json:"slot"`
-	Fork                          *Fork                        `json:"fork"`
-	LatestBlockHeader             *BeaconBlockHeader           `json:"latest_block_header"`
-	BlockRoots                    []string                     `json:"block_roots"`
-	StateRoots                    []string                     `json:"state_roots"`
-	HistoricalRoots               []string                     `json:"historical_roots"`
-	Eth1Data                      *Eth1Data                    `json:"eth1_data"`
-	Eth1DataVotes                 []*Eth1Data                  `json:"eth1_data_votes"`
-	Eth1DepositIndex              string                       `json:"eth1_deposit_index"`
-	Validators                    []*Validator                 `json:"validators"`
-	Balances                      []string                     `json:"balances"`
-	RandaoMixes                   []string                     `json:"randao_mixes"`
-	Slashings                     []string                     `json:"slashings"`
-	PreviousEpochParticipation    []string                     `json:"previous_epoch_participation"`
-	CurrentEpochParticipation     []string                     `json:"current_epoch_participation"`
-	JustificationBits             string                       `json:"justification_bits"`
-	PreviousJustifiedCheckpoint   *Checkpoint                  `json:"previous_justified_checkpoint"`
-	CurrentJustifiedCheckpoint    *Checkpoint                  `json:"current_justified_checkpoint"`
-	FinalizedCheckpoint           *Checkpoint                  `json:"finalized_checkpoint"`
-	InactivityScores              []string                     `json:"inactivity_scores"`
-	CurrentSyncCommittee          *SyncCommittee               `json:"current_sync_committee"`
-	NextSyncCommittee             *SyncCommittee               `json:"next_sync_committee"`
-	LatestExecutionPayloadHeader  *ExecutionPayloadHeaderDeneb `json:"latest_execution_payload_header"`
-	NextWithdrawalIndex           string                       `json:"next_withdrawal_index"`
-	NextWithdrawalValidatorIndex  string                       `json:"next_withdrawal_validator_index"`
-	HistoricalSummaries           []*HistoricalSummary         `json:"historical_summaries"`
-	DepositRequestsStartIndex     string                       `json:"deposit_requests_start_index"`
-	DepositBalanceToConsume       string                       `json:"deposit_balance_to_consume"`
-	ExitBalanceToConsume          string                       `json:"exit_balance_to_consume"`
-	EarliestExitEpoch             string                       `json:"earliest_exit_epoch"`
-	ConsolidationBalanceToConsume string                       `json:"consolidation_balance_to_consume"`
-	EarliestConsolidationEpoch    string                       `json:"earliest_consolidation_epoch"`
-	PendingDeposits               []*PendingDeposit            `json:"pending_deposits"`
-	PendingPartialWithdrawals     []*PendingPartialWithdrawal  `json:"pending_partial_withdrawals"`
-	PendingConsolidations         []*PendingConsolidation      `json:"pending_consolidations"`
-}
-
-type BeaconStateFulu struct {
-	GenesisTime                   string                       `json:"genesis_time"`
-	GenesisValidatorsRoot         string                       `json:"genesis_validators_root"`
-	Slot                          string                       `json:"slot"`
-	Fork                          *Fork                        `json:"fork"`
-	LatestBlockHeader             *BeaconBlockHeader           `json:"latest_block_header"`
-	BlockRoots                    []string                     `json:"block_roots"`
-	StateRoots                    []string                     `json:"state_roots"`
-	HistoricalRoots               []string                     `json:"historical_roots"`
-	Eth1Data                      *Eth1Data                    `json:"eth1_data"`
-	Eth1DataVotes                 []*Eth1Data                  `json:"eth1_data_votes"`
-	Eth1DepositIndex              string                       `json:"eth1_deposit_index"`
-	Validators                    []*Validator                 `json:"validators"`
-	Balances                      []string                     `json:"balances"`
-	RandaoMixes                   []string                     `json:"randao_mixes"`
-	Slashings                     []string                     `json:"slashings"`
-	PreviousEpochParticipation    []string                     `json:"previous_epoch_participation"`
-	CurrentEpochParticipation     []string                     `json:"current_epoch_participation"`
-	JustificationBits             string                       `json:"justification_bits"`
-	PreviousJustifiedCheckpoint   *Checkpoint                  `json:"previous_justified_checkpoint"`
-	CurrentJustifiedCheckpoint    *Checkpoint                  `json:"current_justified_checkpoint"`
-	FinalizedCheckpoint           *Checkpoint                  `json:"finalized_checkpoint"`
-	InactivityScores              []string                     `json:"inactivity_scores"`
-	CurrentSyncCommittee          *SyncCommittee               `json:"current_sync_committee"`
-	NextSyncCommittee             *SyncCommittee               `json:"next_sync_committee"`
-	LatestExecutionPayloadHeader  *ExecutionPayloadHeaderDeneb `json:"latest_execution_payload_header"`
-	NextWithdrawalIndex           string                       `json:"next_withdrawal_index"`
-	NextWithdrawalValidatorIndex  string                       `json:"next_withdrawal_validator_index"`
-	HistoricalSummaries           []*HistoricalSummary         `json:"historical_summaries"`
-	DepositRequestsStartIndex     string                       `json:"deposit_requests_start_index"`
-	DepositBalanceToConsume       string                       `json:"deposit_balance_to_consume"`
-	ExitBalanceToConsume          string                       `json:"exit_balance_to_consume"`
-	EarliestExitEpoch             string                       `json:"earliest_exit_epoch"`
-	ConsolidationBalanceToConsume string                       `json:"consolidation_balance_to_consume"`
-	EarliestConsolidationEpoch    string                       `json:"earliest_consolidation_epoch"`
-	PendingDeposits               []*PendingDeposit            `json:"pending_deposits"`
-	PendingPartialWithdrawals     []*PendingPartialWithdrawal  `json:"pending_partial_withdrawals"`
-	PendingConsolidations         []*PendingConsolidation      `json:"pending_consolidations"`
+	GenesisTime                   string                         `json:"genesis_time"`
+	GenesisValidatorsRoot         string                         `json:"genesis_validators_root"`
+	Slot                          string                         `json:"slot"`
+	Fork                          *Fork                          `json:"fork"`
+	LatestBlockHeader             *BeaconBlockHeader             `json:"latest_block_header"`
+	BlockRoots                    []string                       `json:"block_roots"`
+	StateRoots                    []string                       `json:"state_roots"`
+	HistoricalRoots               []string                       `json:"historical_roots"`
+	Eth1Data                      *Eth1Data                      `json:"eth1_data"`
+	Eth1DataVotes                 []*Eth1Data                    `json:"eth1_data_votes"`
+	Eth1DepositIndex              string                         `json:"eth1_deposit_index"`
+	Validators                    []*Validator                   `json:"validators"`
+	Balances                      []string                       `json:"balances"`
+	RandaoMixes                   []string                       `json:"randao_mixes"`
+	Slashings                     []string                       `json:"slashings"`
+	PreviousEpochParticipation    []string                       `json:"previous_epoch_participation"`
+	CurrentEpochParticipation     []string                       `json:"current_epoch_participation"`
+	JustificationBits             string                         `json:"justification_bits"`
+	PreviousJustifiedCheckpoint   *Checkpoint                    `json:"previous_justified_checkpoint"`
+	CurrentJustifiedCheckpoint    *Checkpoint                    `json:"current_justified_checkpoint"`
+	FinalizedCheckpoint           *Checkpoint                    `json:"finalized_checkpoint"`
+	InactivityScores              []string                       `json:"inactivity_scores"`
+	CurrentSyncCommittee          *SyncCommittee                 `json:"current_sync_committee"`
+	NextSyncCommittee             *SyncCommittee                 `json:"next_sync_committee"`
+	LatestExecutionPayloadHeader  *ExecutionPayloadHeaderElectra `json:"latest_execution_payload_header"`
+	NextWithdrawalIndex           string                         `json:"next_withdrawal_index"`
+	NextWithdrawalValidatorIndex  string                         `json:"next_withdrawal_validator_index"`
+	HistoricalSummaries           []*HistoricalSummary           `json:"historical_summaries"`
+	DepositRequestsStartIndex     string                         `json:"deposit_requests_start_index"`
+	DepositBalanceToConsume       string                         `json:"deposit_balance_to_consume"`
+	ExitBalanceToConsume          string                         `json:"exit_balance_to_consume"`
+	EarliestExitEpoch             string                         `json:"earliest_exit_epoch"`
+	ConsolidationBalanceToConsume string                         `json:"consolidation_balance_to_consume"`
+	EarliestConsolidationEpoch    string                         `json:"earliest_consolidation_epoch"`
+	PendingBalanceDeposits        []*PendingBalanceDeposit       `json:"pending_balance_deposits"`
+	PendingPartialWithdrawals     []*PendingPartialWithdrawal    `json:"pending_partial_withdrawals"`
+	PendingConsolidations         []*PendingConsolidation        `json:"pending_consolidations"`
 }

async/event/BUILD.bazel

@@ -4,25 +4,26 @@ go_library(
     name = "go_default_library",
     srcs = [
         "feed.go",
-        "interface.go",
         "subscription.go",
     ],
     importpath = "github.com/prysmaticlabs/prysm/v5/async/event",
     visibility = ["//visibility:public"],
-    deps = [
-        "//time/mclock:go_default_library",
-        "@com_github_ethereum_go_ethereum//event:go_default_library",
-    ],
+    deps = ["//time/mclock:go_default_library"],
 )
 
 go_test(
     name = "go_default_test",
     size = "small",
     srcs = [
+        "example_feed_test.go",
         "example_scope_test.go",
         "example_subscription_test.go",
+        "feed_test.go",
         "subscription_test.go",
     ],
     embed = [":go_default_library"],
-    deps = ["//testing/require:go_default_library"],
+    deps = [
+        "//testing/assert:go_default_library",
+        "//testing/require:go_default_library",
+    ],
 )

async/event/example_feed_test.go

@@ -0,0 +1,73 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package event_test
+
+import (
+	"fmt"
+
+	"github.com/prysmaticlabs/prysm/v5/async/event"
+)
+
+func ExampleFeed_acknowledgedEvents() {
+	// This example shows how the return value of Send can be used for request/reply
+	// interaction between event consumers and producers.
+	var feed event.Feed
+	type ackedEvent struct {
+		i   int
+		ack chan<- struct{}
+	}
+
+	// Consumers wait for events on the feed and acknowledge processing.
+	done := make(chan struct{})
+	defer close(done)
+	for i := 0; i < 3; i++ {
+		ch := make(chan ackedEvent, 100)
+		sub := feed.Subscribe(ch)
+		go func() {
+			defer sub.Unsubscribe()
+			for {
+				select {
+				case ev := <-ch:
+					fmt.Println(ev.i) // "process" the event
+					ev.ack <- struct{}{}
+				case <-done:
+					return
+				}
+			}
+		}()
+	}
+
+	// The producer sends values of type ackedEvent with increasing values of i.
+	// It waits for all consumers to acknowledge before sending the next event.
+	for i := 0; i < 3; i++ {
+		acksignal := make(chan struct{})
+		n := feed.Send(ackedEvent{i, acksignal})
+		for ack := 0; ack < n; ack++ {
+			<-acksignal
+		}
+	}
+	// Output:
+	// 0
+	// 0
+	// 0
+	// 1
+	// 1
+	// 1
+	// 2
+	// 2
+	// 2
+}

async/event/feed.go

@@ -14,12 +14,241 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+// Package event contains an event feed implementation for process communication.
 package event
 
 import (
-	geth_event "github.com/ethereum/go-ethereum/event"
+	"errors"
+	"reflect"
+	"slices"
+	"sync"
 )
 
-// Feed is a re-export of the go-ethereum event feed.
-type Feed = geth_event.Feed
-type Subscription = geth_event.Subscription
+var errBadChannel = errors.New("event: Subscribe argument does not have sendable channel type")
+
+// Feed implements one-to-many subscriptions where the carrier of events is a channel.
+// Values sent to a Feed are delivered to all subscribed channels simultaneously.
+//
+// Feeds can only be used with a single type. The type is determined by the first Send or
+// Subscribe operation. Subsequent calls to these methods panic if the type does not
+// match.
+//
+// The zero value is ready to use.
+type Feed struct {
+	once      sync.Once        // ensures that init only runs once
+	sendLock  chan struct{}    // sendLock has a one-element buffer and is empty when held.It protects sendCases.
+	removeSub chan interface{} // interrupts Send
+	sendCases caseList         // the active set of select cases used by Send
+
+	// The inbox holds newly subscribed channels until they are added to sendCases.
+	mu    sync.Mutex
+	inbox caseList
+	etype reflect.Type
+}
+
+// This is the index of the first actual subscription channel in sendCases.
+// sendCases[0] is a SelectRecv case for the removeSub channel.
+const firstSubSendCase = 1
+
+type feedTypeError struct {
+	got, want reflect.Type
+	op        string
+}
+
+func (e feedTypeError) Error() string {
+	return "event: wrong type in " + e.op + " got " + e.got.String() + ", want " + e.want.String()
+}
+
+func (f *Feed) init() {
+	f.removeSub = make(chan interface{})
+	f.sendLock = make(chan struct{}, 1)
+	f.sendLock <- struct{}{}
+	f.sendCases = caseList{{Chan: reflect.ValueOf(f.removeSub), Dir: reflect.SelectRecv}}
+}
+
+// Subscribe adds a channel to the feed. Future sends will be delivered on the channel
+// until the subscription is canceled. All channels added must have the same element type.
+//
+// The channel should have ample buffer space to avoid blocking other subscribers.
+// Slow subscribers are not dropped.
+func (f *Feed) Subscribe(channel interface{}) Subscription {
+	f.once.Do(f.init)
+
+	chanval := reflect.ValueOf(channel)
+	chantyp := chanval.Type()
+	if chantyp.Kind() != reflect.Chan || chantyp.ChanDir()&reflect.SendDir == 0 {
+		panic(errBadChannel)
+	}
+	sub := &feedSub{feed: f, channel: chanval, err: make(chan error, 1)}
+
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if !f.typecheck(chantyp.Elem()) {
+		panic(feedTypeError{op: "Subscribe", got: chantyp, want: reflect.ChanOf(reflect.SendDir, f.etype)})
+	}
+	// Add the select case to the inbox.
+	// The next Send will add it to f.sendCases.
+	cas := reflect.SelectCase{Dir: reflect.SelectSend, Chan: chanval}
+	f.inbox = append(f.inbox, cas)
+	return sub
+}
+
+// note: callers must hold f.mu
+func (f *Feed) typecheck(typ reflect.Type) bool {
+	if f.etype == nil {
+		f.etype = typ
+		return true
+	}
+	// In the event the feed's type is an actual interface, we
+	// perform an interface conformance check here.
+	if f.etype.Kind() == reflect.Interface && typ.Implements(f.etype) {
+		return true
+	}
+	return f.etype == typ
+}
+
+func (f *Feed) remove(sub *feedSub) {
+	// Delete from inbox first, which covers channels
+	// that have not been added to f.sendCases yet.
+	ch := sub.channel.Interface()
+	f.mu.Lock()
+	index := f.inbox.find(ch)
+	if index != -1 {
+		f.inbox = f.inbox.delete(index)
+		f.mu.Unlock()
+		return
+	}
+	f.mu.Unlock()
+
+	select {
+	case f.removeSub <- ch:
+		// Send will remove the channel from f.sendCases.
+	case <-f.sendLock:
+		// No Send is in progress, delete the channel now that we have the send lock.
+		f.sendCases = f.sendCases.delete(f.sendCases.find(ch))
+		f.sendLock <- struct{}{}
+	}
+}
+
+// Send delivers to all subscribed channels simultaneously.
+// It returns the number of subscribers that the value was sent to.
+func (f *Feed) Send(value interface{}) (nsent int) {
+	rvalue := reflect.ValueOf(value)
+
+	f.once.Do(f.init)
+	<-f.sendLock
+
+	// Add new cases from the inbox after taking the send lock.
+	f.mu.Lock()
+	f.sendCases = append(f.sendCases, f.inbox...)
+	f.inbox = nil
+
+	if !f.typecheck(rvalue.Type()) {
+		f.sendLock <- struct{}{}
+		f.mu.Unlock()
+		panic(feedTypeError{op: "Send", got: rvalue.Type(), want: f.etype})
+	}
+	f.mu.Unlock()
+
+	// Set the sent value on all channels.
+	for i := firstSubSendCase; i < len(f.sendCases); i++ {
+		f.sendCases[i].Send = rvalue
+	}
+
+	// Send until all channels except removeSub have been chosen. 'cases' tracks a prefix
+	// of sendCases. When a send succeeds, the corresponding case moves to the end of
+	// 'cases' and it shrinks by one element.
+	cases := f.sendCases
+	for {
+		// Fast path: try sending without blocking before adding to the select set.
+		// This should usually succeed if subscribers are fast enough and have free
+		// buffer space.
+		for i := firstSubSendCase; i < len(cases); i++ {
+			if cases[i].Chan.TrySend(rvalue) {
+				nsent++
+				cases = cases.deactivate(i)
+				i--
+			}
+		}
+		if len(cases) == firstSubSendCase {
+			break
+		}
+		// Select on all the receivers, waiting for them to unblock.
+		chosen, recv, _ := reflect.Select(cases)
+		if chosen == 0 /* <-f.removeSub */ {
+			index := f.sendCases.find(recv.Interface())
+			f.sendCases = f.sendCases.delete(index)
+			if index >= 0 && index < len(cases) {
+				// Shrink 'cases' too because the removed case was still active.
+				cases = f.sendCases[:len(cases)-1]
+			}
+		} else {
+			cases = cases.deactivate(chosen)
+			nsent++
+		}
+	}
+
+	// Forget about the sent value and hand off the send lock.
+	for i := firstSubSendCase; i < len(f.sendCases); i++ {
+		f.sendCases[i].Send = reflect.Value{}
+	}
+	f.sendLock <- struct{}{}
+	return nsent
+}
+
+type feedSub struct {
+	feed    *Feed
+	channel reflect.Value
+	errOnce sync.Once
+	err     chan error
+}
+
+// Unsubscribe remove feed subscription.
+func (sub *feedSub) Unsubscribe() {
+	sub.errOnce.Do(func() {
+		sub.feed.remove(sub)
+		close(sub.err)
+	})
+}
+
+// Err returns error channel.
+func (sub *feedSub) Err() <-chan error {
+	return sub.err
+}
+
+type caseList []reflect.SelectCase
+
+// find returns the index of a case containing the given channel.
+func (cs caseList) find(channel interface{}) int {
+	return slices.IndexFunc(cs, func(selectCase reflect.SelectCase) bool {
+		return selectCase.Chan.Interface() == channel
+	})
+}
+
+// delete removes the given case from cs.
+func (cs caseList) delete(index int) caseList {
+	return append(cs[:index], cs[index+1:]...)
+}
+
+// deactivate moves the case at index into the non-accessible portion of the cs slice.
+func (cs caseList) deactivate(index int) caseList {
+	last := len(cs) - 1
+	cs[index], cs[last] = cs[last], cs[index]
+	return cs[:last]
+}
+
+// func (cs caseList) String() string {
+//     s := "["
+//     for i, cas := range cs {
+//             if i != 0 {
+//                     s += ", "
+//             }
+//             switch cas.Dir {
+//             case reflect.SelectSend:
+//                     s += fmt.Sprintf("%v<-", cas.Chan.Interface())
+//             case reflect.SelectRecv:
+//                     s += fmt.Sprintf("<-%v", cas.Chan.Interface())
+//             }
+//     }
+//     return s + "]"
+// }

async/event/feed_test.go

@@ -0,0 +1,509 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package event
+
+import (
+	"fmt"
+	"reflect"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+)
+
+func TestFeedPanics(t *testing.T) {
+	{
+		var f Feed
+		f.Send(2)
+		want := feedTypeError{op: "Send", got: reflect.TypeOf(uint64(0)), want: reflect.TypeOf(0)}
+		assert.NoError(t, checkPanic(want, func() { f.Send(uint64(2)) }))
+		// Validate it doesn't deadlock.
+		assert.NoError(t, checkPanic(want, func() { f.Send(uint64(2)) }))
+	}
+	{
+		var f Feed
+		ch := make(chan int)
+		f.Subscribe(ch)
+		want := feedTypeError{op: "Send", got: reflect.TypeOf(uint64(0)), want: reflect.TypeOf(0)}
+		assert.NoError(t, checkPanic(want, func() { f.Send(uint64(2)) }))
+	}
+	{
+		var f Feed
+		f.Send(2)
+		want := feedTypeError{op: "Subscribe", got: reflect.TypeOf(make(chan uint64)), want: reflect.TypeOf(make(chan<- int))}
+		assert.NoError(t, checkPanic(want, func() { f.Subscribe(make(chan uint64)) }))
+	}
+	{
+		var f Feed
+		assert.NoError(t, checkPanic(errBadChannel, func() { f.Subscribe(make(<-chan int)) }))
+	}
+	{
+		var f Feed
+		assert.NoError(t, checkPanic(errBadChannel, func() { f.Subscribe(0) }))
+	}
+}
+
+func checkPanic(want error, fn func()) (err error) {
+	defer func() {
+		panicResult := recover()
+		if panicResult == nil {
+			err = fmt.Errorf("didn't panic")
+		} else if !reflect.DeepEqual(panicResult, want) {
+			err = fmt.Errorf("panicked with wrong error: got %q, want %q", panicResult, want)
+		}
+	}()
+	fn()
+	return nil
+}
+
+func TestFeed(t *testing.T) {
+	var feed Feed
+	var done, subscribed sync.WaitGroup
+	subscriber := func(i int) {
+		defer done.Done()
+
+		subchan := make(chan int)
+		sub := feed.Subscribe(subchan)
+		timeout := time.NewTimer(2 * time.Second)
+		subscribed.Done()
+
+		select {
+		case v := <-subchan:
+			if v != 1 {
+				t.Errorf("%d: received value %d, want 1", i, v)
+			}
+		case <-timeout.C:
+			t.Errorf("%d: receive timeout", i)
+		}
+
+		sub.Unsubscribe()
+		select {
+		case _, ok := <-sub.Err():
+			if ok {
+				t.Errorf("%d: error channel not closed after unsubscribe", i)
+			}
+		case <-timeout.C:
+			t.Errorf("%d: unsubscribe timeout", i)
+		}
+	}
+
+	const n = 1000
+	done.Add(n)
+	subscribed.Add(n)
+	for i := 0; i < n; i++ {
+		go subscriber(i)
+	}
+	subscribed.Wait()
+	if nsent := feed.Send(1); nsent != n {
+		t.Errorf("first send delivered %d times, want %d", nsent, n)
+	}
+	if nsent := feed.Send(2); nsent != 0 {
+		t.Errorf("second send delivered %d times, want 0", nsent)
+	}
+	done.Wait()
+}
+
+func TestFeedSubscribeSameChannel(t *testing.T) {
+	var (
+		feed Feed
+		done sync.WaitGroup
+		ch   = make(chan int)
+		sub1 = feed.Subscribe(ch)
+		sub2 = feed.Subscribe(ch)
+		_    = feed.Subscribe(ch)
+	)
+	expectSends := func(value, n int) {
+		if nsent := feed.Send(value); nsent != n {
+			t.Errorf("send delivered %d times, want %d", nsent, n)
+		}
+		done.Done()
+	}
+	expectRecv := func(wantValue, n int) {
+		for i := 0; i < n; i++ {
+			if v := <-ch; v != wantValue {
+				t.Errorf("received %d, want %d", v, wantValue)
+			}
+		}
+	}
+
+	done.Add(1)
+	go expectSends(1, 3)
+	expectRecv(1, 3)
+	done.Wait()
+
+	sub1.Unsubscribe()
+
+	done.Add(1)
+	go expectSends(2, 2)
+	expectRecv(2, 2)
+	done.Wait()
+
+	sub2.Unsubscribe()
+
+	done.Add(1)
+	go expectSends(3, 1)
+	expectRecv(3, 1)
+	done.Wait()
+}
+
+func TestFeedSubscribeBlockedPost(_ *testing.T) {
+	var (
+		feed   Feed
+		nsends = 2000
+		ch1    = make(chan int)
+		ch2    = make(chan int)
+		wg     sync.WaitGroup
+	)
+	defer wg.Wait()
+
+	feed.Subscribe(ch1)
+	wg.Add(nsends)
+	for i := 0; i < nsends; i++ {
+		go func() {
+			feed.Send(99)
+			wg.Done()
+		}()
+	}
+
+	sub2 := feed.Subscribe(ch2)
+	defer sub2.Unsubscribe()
+
+	// We're done when ch1 has received N times.
+	// The number of receives on ch2 depends on scheduling.
+	for i := 0; i < nsends; {
+		select {
+		case <-ch1:
+			i++
+		case <-ch2:
+		}
+	}
+}
+
+func TestFeedUnsubscribeBlockedPost(_ *testing.T) {
+	var (
+		feed   Feed
+		nsends = 200
+		chans  = make([]chan int, 2000)
+		subs   = make([]Subscription, len(chans))
+		bchan  = make(chan int)
+		bsub   = feed.Subscribe(bchan)
+		wg     sync.WaitGroup
+	)
+	for i := range chans {
+		chans[i] = make(chan int, nsends)
+	}
+
+	// Queue up some Sends. None of these can make progress while bchan isn't read.
+	wg.Add(nsends)
+	for i := 0; i < nsends; i++ {
+		go func() {
+			feed.Send(99)
+			wg.Done()
+		}()
+	}
+	// Subscribe the other channels.
+	for i, ch := range chans {
+		subs[i] = feed.Subscribe(ch)
+	}
+	// Unsubscribe them again.
+	for _, sub := range subs {
+		sub.Unsubscribe()
+	}
+	// Unblock the Sends.
+	bsub.Unsubscribe()
+	wg.Wait()
+}
+
+// Checks that unsubscribing a channel during Send works even if that
+// channel has already been sent on.
+func TestFeedUnsubscribeSentChan(_ *testing.T) {
+	var (
+		feed Feed
+		ch1  = make(chan int)
+		ch2  = make(chan int)
+		sub1 = feed.Subscribe(ch1)
+		sub2 = feed.Subscribe(ch2)
+		wg   sync.WaitGroup
+	)
+	defer sub2.Unsubscribe()
+
+	wg.Add(1)
+	go func() {
+		feed.Send(0)
+		wg.Done()
+	}()
+
+	// Wait for the value on ch1.
+	<-ch1
+	// Unsubscribe ch1, removing it from the send cases.
+	sub1.Unsubscribe()
+
+	// Receive ch2, finishing Send.
+	<-ch2
+	wg.Wait()
+
+	// Send again. This should send to ch2 only, so the wait group will unblock
+	// as soon as a value is received on ch2.
+	wg.Add(1)
+	go func() {
+		feed.Send(0)
+		wg.Done()
+	}()
+	<-ch2
+	wg.Wait()
+}
+
+func TestFeedUnsubscribeFromInbox(t *testing.T) {
+	var (
+		feed Feed
+		ch1  = make(chan int)
+		ch2  = make(chan int)
+		sub1 = feed.Subscribe(ch1)
+		sub2 = feed.Subscribe(ch1)
+		sub3 = feed.Subscribe(ch2)
+	)
+	assert.Equal(t, 3, len(feed.inbox))
+	assert.Equal(t, 1, len(feed.sendCases), "sendCases is non-empty after unsubscribe")
+
+	sub1.Unsubscribe()
+	sub2.Unsubscribe()
+	sub3.Unsubscribe()
+	assert.Equal(t, 0, len(feed.inbox), "Inbox is non-empty after unsubscribe")
+	assert.Equal(t, 1, len(feed.sendCases), "sendCases is non-empty after unsubscribe")
+}
+
+func BenchmarkFeedSend1000(b *testing.B) {
+	var (
+		done  sync.WaitGroup
+		feed  Feed
+		nsubs = 1000
+	)
+	subscriber := func(ch <-chan int) {
+		for i := 0; i < b.N; i++ {
+			<-ch
+		}
+		done.Done()
+	}
+	done.Add(nsubs)
+	for i := 0; i < nsubs; i++ {
+		ch := make(chan int, 200)
+		feed.Subscribe(ch)
+		go subscriber(ch)
+	}
+
+	// The actual benchmark.
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		if feed.Send(i) != nsubs {
+			panic("wrong number of sends")
+		}
+	}
+
+	b.StopTimer()
+	done.Wait()
+}
+
+func TestFeed_Send(t *testing.T) {
+	tests := []struct {
+		name        string
+		evFeed      *Feed
+		testSetup   func(fd *Feed, t *testing.T, o interface{})
+		obj         interface{}
+		expectPanic bool
+	}{
+		{
+			name:   "normal struct",
+			evFeed: new(Feed),
+			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
+				testChan := make(chan testFeedWithPointer, 1)
+				fd.Subscribe(testChan)
+			},
+			obj: testFeedWithPointer{
+				a: new(uint64),
+				b: new(string),
+			},
+			expectPanic: false,
+		},
+		{
+			name:   "un-implemented interface",
+			evFeed: new(Feed),
+			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
+				testChan := make(chan testFeedIface, 1)
+				fd.Subscribe(testChan)
+			},
+			obj: testFeedWithPointer{
+				a: new(uint64),
+				b: new(string),
+			},
+			expectPanic: true,
+		},
+		{
+			name:   "semi-implemented interface",
+			evFeed: new(Feed),
+			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
+				testChan := make(chan testFeedIface, 1)
+				fd.Subscribe(testChan)
+			},
+			obj: testFeed2{
+				a: 0,
+				b: "",
+				c: []byte{'A'},
+			},
+			expectPanic: true,
+		},
+		{
+			name:   "fully-implemented interface",
+			evFeed: new(Feed),
+			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
+				testChan := make(chan testFeedIface)
+				// Make it unbuffered to allow message to
+				// pass through
+				go func() {
+					a := <-testChan
+					if !reflect.DeepEqual(a, o) {
+						t.Errorf("Got = %v, want = %v", a, o)
+					}
+				}()
+				fd.Subscribe(testChan)
+			},
+			obj: testFeed{
+				a: 0,
+				b: "",
+			},
+			expectPanic: false,
+		},
+		{
+			name:   "fully-implemented interface with additional methods",
+			evFeed: new(Feed),
+			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
+				testChan := make(chan testFeedIface)
+				// Make it unbuffered to allow message to
+				// pass through
+				go func() {
+					a := <-testChan
+					if !reflect.DeepEqual(a, o) {
+						t.Errorf("Got = %v, want = %v", a, o)
+					}
+				}()
+				fd.Subscribe(testChan)
+			},
+			obj: testFeed3{
+				a: 0,
+				b: "",
+				c: []byte{'A'},
+				d: []byte{'B'},
+			},
+			expectPanic: false,
+		},
+		{
+			name:   "concrete types implementing the same interface",
+			evFeed: new(Feed),
+			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
+				testChan := make(chan testFeed, 1)
+				// Make it unbuffered to allow message to
+				// pass through
+				go func() {
+					a := <-testChan
+					if !reflect.DeepEqual(a, o) {
+						t.Errorf("Got = %v, want = %v", a, o)
+					}
+				}()
+				fd.Subscribe(testChan)
+			},
+			obj: testFeed3{
+				a: 0,
+				b: "",
+				c: []byte{'A'},
+				d: []byte{'B'},
+			},
+			expectPanic: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			defer func() {
+				if r := recover(); r != nil {
+					if !tt.expectPanic {
+						t.Errorf("panic triggered when unexpected: %v", r)
+					}
+				} else {
+					if tt.expectPanic {
+						t.Error("panic not triggered when expected")
+					}
+				}
+			}()
+			tt.testSetup(tt.evFeed, t, tt.obj)
+			if gotNsent := tt.evFeed.Send(tt.obj); gotNsent != 1 {
+				t.Errorf("Send() = %v, want %v", gotNsent, 1)
+			}
+		})
+	}
+}
+
+// The following objects below are a collection of different
+// struct types to test with.
+type testFeed struct {
+	a uint64
+	b string
+}
+
+func (testFeed) method1() {
+
+}
+
+func (testFeed) method2() {
+
+}
+
+type testFeedWithPointer struct {
+	a *uint64
+	b *string
+}
+
+type testFeed2 struct {
+	a uint64
+	b string
+	c []byte
+}
+
+func (testFeed2) method1() {
+
+}
+
+type testFeed3 struct {
+	a    uint64
+	b    string
+	c, d []byte
+}
+
+func (testFeed3) method1() {
+
+}
+
+func (testFeed3) method2() {
+
+}
+
+func (testFeed3) method3() {
+
+}
+
+type testFeedIface interface {
+	method1()
+	method2()
+}

async/event/interface.go

@@ -1,8 +0,0 @@
-package event
-
-// SubscriberSender is an abstract representation of an *event.Feed
-// to use in describing types that accept or return an *event.Feed.
-type SubscriberSender interface {
-	Subscribe(channel interface{}) Subscription
-	Send(value interface{}) (nsent int)
-}

async/event/subscription.go

@@ -28,6 +28,25 @@ import (
 // request backoff time.
 const waitQuotient = 10
 
+// Subscription represents a stream of events. The carrier of the events is typically a
+// channel, but isn't part of the interface.
+//
+// Subscriptions can fail while established. Failures are reported through an error
+// channel. It receives a value if there is an issue with the subscription (e.g. the
+// network connection delivering the events has been closed). Only one value will ever be
+// sent.
+//
+// The error channel is closed when the subscription ends successfully (i.e. when the
+// source of events is closed). It is also closed when Unsubscribe is called.
+//
+// The Unsubscribe method cancels the sending of events. You must call Unsubscribe in all
+// cases to ensure that resources related to the subscription are released. It can be
+// called any number of times.
+type Subscription interface {
+	Err() <-chan error // returns the error channel
+	Unsubscribe()      // cancels sending of events, closing the error channel
+}
+
 // NewSubscription runs a producer function as a subscription in a new goroutine. The
 // channel given to the producer is closed when Unsubscribe is called. If fn returns an
 // error, it is sent on the subscription's error channel.

async/multilock.go

@@ -125,7 +125,7 @@ func getChan(key string) chan byte {
 
 // Return a new string with unique elements.
 func unique(arr []string) []string {
-	if len(arr) <= 1 {
+	if arr == nil || len(arr) <= 1 {
 		return arr
 	}
 

beacon-chain/blockchain/BUILD.bazel

@@ -12,7 +12,6 @@ go_library(
         "forkchoice_update_execution.go",
         "head.go",
         "head_sync_committee_info.go",
-        "holeskyhack.go",
         "init_sync_process_block.go",
         "log.go",
         "merge_ascii_art.go",
@@ -26,8 +25,8 @@ go_library(
         "receive_attestation.go",
         "receive_blob.go",
         "receive_block.go",
+        "receive_data_column.go",
         "service.go",
-        "setup_forchoice.go",
         "tracked_proposer.go",
         "weak_subjectivity_checks.go",
     ],
@@ -45,12 +44,12 @@ go_library(
         "//beacon-chain/cache:go_default_library",
         "//beacon-chain/core/altair:go_default_library",
         "//beacon-chain/core/blocks:go_default_library",
-        "//beacon-chain/core/electra:go_default_library",
         "//beacon-chain/core/epoch/precompute:go_default_library",
         "//beacon-chain/core/feed:go_default_library",
         "//beacon-chain/core/feed/state:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/core/light-client:go_default_library",
+        "//beacon-chain/core/peerdas:go_default_library",
         "//beacon-chain/core/signing:go_default_library",
         "//beacon-chain/core/time:go_default_library",
         "//beacon-chain/core/transition:go_default_library",
@@ -87,6 +86,7 @@ go_library(
         "//monitoring/tracing/trace:go_default_library",
         "//proto/engine/v1:go_default_library",
         "//proto/eth/v1:go_default_library",
+        "//proto/eth/v2:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/prysm/v1alpha1/attestation:go_default_library",
         "//runtime/version:go_default_library",
@@ -99,6 +99,7 @@ go_library(
         "@com_github_prometheus_client_golang//prometheus:go_default_library",
         "@com_github_prometheus_client_golang//prometheus/promauto:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
+        "@io_opencensus_go//trace:go_default_library",
         "@org_golang_x_sync//errgroup:go_default_library",
     ],
 )
@@ -143,7 +144,6 @@ go_test(
         "//beacon-chain/core/blocks:go_default_library",
         "//beacon-chain/core/feed/state:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
-        "//beacon-chain/core/light-client:go_default_library",
         "//beacon-chain/core/signing:go_default_library",
         "//beacon-chain/core/transition:go_default_library",
         "//beacon-chain/das:go_default_library",
@@ -160,6 +160,7 @@ go_test(
         "//beacon-chain/operations/slashings:go_default_library",
         "//beacon-chain/operations/voluntaryexits:go_default_library",
         "//beacon-chain/p2p:go_default_library",
+        "//beacon-chain/p2p/testing:go_default_library",
         "//beacon-chain/startup:go_default_library",
         "//beacon-chain/state:go_default_library",
         "//beacon-chain/state/state-native:go_default_library",

beacon-chain/blockchain/blockchain_test.go

@@ -2,7 +2,6 @@ package blockchain
 
 import (
 	"io"
-	"os"
 	"testing"
 
 	"github.com/sirupsen/logrus"
@@ -12,5 +11,5 @@ func TestMain(m *testing.M) {
 	logrus.SetLevel(logrus.DebugLevel)
 	logrus.SetOutput(io.Discard)
 
-	os.Exit(m.Run())
+	m.Run()
 }

beacon-chain/blockchain/chain_info.go

@@ -12,7 +12,6 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
-	consensus_blocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/forkchoice"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
@@ -45,7 +44,7 @@ type ForkchoiceFetcher interface {
 	UpdateHead(context.Context, primitives.Slot)
 	HighestReceivedBlockSlot() primitives.Slot
 	ReceivedBlocksLastEpoch() (uint64, error)
-	InsertNode(context.Context, state.BeaconState, consensus_blocks.ROBlock) error
+	InsertNode(context.Context, state.BeaconState, [32]byte) error
 	ForkChoiceDump(context.Context) (*forkchoice.Dump, error)
 	NewSlot(context.Context, primitives.Slot) error
 	ProposerBoost() [32]byte
@@ -204,7 +203,7 @@ func (s *Service) HeadState(ctx context.Context) (state.BeaconState, error) {
 	defer s.headLock.RUnlock()
 
 	ok := s.hasHeadState()
-	span.SetAttributes(trace.BoolAttribute("cache_hit", ok))
+	span.AddAttributes(trace.BoolAttribute("cache_hit", ok))
 
 	if ok {
 		return s.headState(ctx), nil
@@ -226,7 +225,7 @@ func (s *Service) HeadStateReadOnly(ctx context.Context) (state.ReadOnlyBeaconSt
 	defer s.headLock.RUnlock()
 
 	ok := s.hasHeadState()
-	span.SetAttributes(trace.BoolAttribute("cache_hit", ok))
+	span.AddAttributes(trace.BoolAttribute("cache_hit", ok))
 
 	if ok {
 		return s.headStateReadOnly(ctx), nil
@@ -243,7 +242,7 @@ func (s *Service) HeadValidatorsIndices(ctx context.Context, epoch primitives.Ep
 	if !s.hasHeadState() {
 		return []primitives.ValidatorIndex{}, nil
 	}
-	return helpers.ActiveValidatorIndices(ctx, s.headStateReadOnly(ctx), epoch)
+	return helpers.ActiveValidatorIndices(ctx, s.headState(ctx), epoch)
 }
 
 // HeadGenesisValidatorsRoot returns genesis validators root of the head state.

beacon-chain/blockchain/chain_info_forkchoice.go

@@ -4,7 +4,6 @@ import (
 	"context"
 
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
-	consensus_blocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/forkchoice"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 )
@@ -45,10 +44,10 @@ func (s *Service) ReceivedBlocksLastEpoch() (uint64, error) {
 }
 
 // InsertNode is a wrapper for node insertion which is self locked
-func (s *Service) InsertNode(ctx context.Context, st state.BeaconState, block consensus_blocks.ROBlock) error {
+func (s *Service) InsertNode(ctx context.Context, st state.BeaconState, root [32]byte) error {
 	s.cfg.ForkChoiceStore.Lock()
 	defer s.cfg.ForkChoiceStore.Unlock()
-	return s.cfg.ForkChoiceStore.InsertNode(ctx, st, block)
+	return s.cfg.ForkChoiceStore.InsertNode(ctx, st, root)
 }
 
 // ForkChoiceDump returns the corresponding value from forkchoice

beacon-chain/blockchain/chain_info_test.go

@@ -38,7 +38,7 @@ func prepareForkchoiceState(
 	payloadHash [32]byte,
 	justified *ethpb.Checkpoint,
 	finalized *ethpb.Checkpoint,
-) (state.BeaconState, blocks.ROBlock, error) {
+) (state.BeaconState, [32]byte, error) {
 	blockHeader := &ethpb.BeaconBlockHeader{
 		ParentRoot: parentRoot[:],
 	}
@@ -59,26 +59,7 @@ func prepareForkchoiceState(
 
 	base.BlockRoots[0] = append(base.BlockRoots[0], blockRoot[:]...)
 	st, err := state_native.InitializeFromProtoBellatrix(base)
-	if err != nil {
-		return nil, blocks.ROBlock{}, err
-	}
-	blk := &ethpb.SignedBeaconBlockBellatrix{
-		Block: &ethpb.BeaconBlockBellatrix{
-			Slot:       slot,
-			ParentRoot: parentRoot[:],
-			Body: &ethpb.BeaconBlockBodyBellatrix{
-				ExecutionPayload: &enginev1.ExecutionPayload{
-					BlockHash: payloadHash[:],
-				},
-			},
-		},
-	}
-	signed, err := blocks.NewSignedBeaconBlock(blk)
-	if err != nil {
-		return nil, blocks.ROBlock{}, err
-	}
-	roblock, err := blocks.NewROBlockWithRoot(signed, blockRoot)
-	return st, roblock, err
+	return st, blockRoot, err
 }
 
 func TestHeadRoot_Nil(t *testing.T) {
@@ -141,9 +122,9 @@ func TestUnrealizedJustifiedBlockHash(t *testing.T) {
 	service := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}}
 	ojc := &ethpb.Checkpoint{Root: []byte{'j'}}
 	ofc := &ethpb.Checkpoint{Root: []byte{'f'}}
-	st, roblock, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	st, blkRoot, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
 	service.cfg.ForkChoiceStore.SetBalancesByRooter(func(_ context.Context, _ [32]byte) ([]uint64, error) { return []uint64{}, nil })
 	require.NoError(t, service.cfg.ForkChoiceStore.UpdateJustifiedCheckpoint(ctx, &forkchoicetypes.Checkpoint{Epoch: 6, Root: [32]byte{'j'}}))
 
@@ -335,24 +316,24 @@ func TestService_ChainHeads(t *testing.T) {
 	c := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}}
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	ofc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
-	st, roblock, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	st, blkRoot, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
-	st, roblock, err = prepareForkchoiceState(ctx, 100, [32]byte{'a'}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	st, blkRoot, err = prepareForkchoiceState(ctx, 100, [32]byte{'a'}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
-	st, roblock, err = prepareForkchoiceState(ctx, 101, [32]byte{'b'}, [32]byte{'a'}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	st, blkRoot, err = prepareForkchoiceState(ctx, 101, [32]byte{'b'}, [32]byte{'a'}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
-	st, roblock, err = prepareForkchoiceState(ctx, 102, [32]byte{'c'}, [32]byte{'b'}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	st, blkRoot, err = prepareForkchoiceState(ctx, 102, [32]byte{'c'}, [32]byte{'b'}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
-	st, roblock, err = prepareForkchoiceState(ctx, 103, [32]byte{'d'}, [32]byte{'a'}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	st, blkRoot, err = prepareForkchoiceState(ctx, 103, [32]byte{'d'}, [32]byte{'a'}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
-	st, roblock, err = prepareForkchoiceState(ctx, 104, [32]byte{'e'}, [32]byte{'b'}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	st, blkRoot, err = prepareForkchoiceState(ctx, 104, [32]byte{'e'}, [32]byte{'b'}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
 
 	roots, slots := c.ChainHeads()
 	require.Equal(t, 3, len(roots))
@@ -432,12 +413,12 @@ func TestService_IsOptimistic(t *testing.T) {
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	ofc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	c := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}, head: &head{root: [32]byte{'b'}}}
-	st, roblock, err := prepareForkchoiceState(ctx, 100, [32]byte{'a'}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	st, blkRoot, err := prepareForkchoiceState(ctx, 100, [32]byte{'a'}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
-	st, roblock, err = prepareForkchoiceState(ctx, 101, [32]byte{'b'}, [32]byte{'a'}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	st, blkRoot, err = prepareForkchoiceState(ctx, 101, [32]byte{'b'}, [32]byte{'a'}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
 
 	opt, err := c.IsOptimistic(ctx)
 	require.NoError(t, err)
@@ -468,12 +449,12 @@ func TestService_IsOptimisticForRoot(t *testing.T) {
 	c := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}, head: &head{root: [32]byte{'b'}}}
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	ofc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
-	st, roblock, err := prepareForkchoiceState(ctx, 100, [32]byte{'a'}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	st, blkRoot, err := prepareForkchoiceState(ctx, 100, [32]byte{'a'}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
-	st, roblock, err = prepareForkchoiceState(ctx, 101, [32]byte{'b'}, [32]byte{'a'}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	st, blkRoot, err = prepareForkchoiceState(ctx, 101, [32]byte{'b'}, [32]byte{'a'}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
-	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
+	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
 
 	opt, err := c.IsOptimisticForRoot(ctx, [32]byte{'a'})
 	require.NoError(t, err)

beacon-chain/blockchain/error.go

@@ -33,6 +33,7 @@ var (
 )
 
 var errMaxBlobsExceeded = errors.New("Expected commitments in block exceeds MAX_BLOBS_PER_BLOCK")
+var errMaxDataColumnsExceeded = errors.New("Expected data columns for node exceeds NUMBER_OF_COLUMNS")
 
 // An invalid block is the block that fails state transition based on the core protocol rules.
 // The beacon node shall not be accepting nor building blocks that branch off from an invalid block.

beacon-chain/blockchain/execution_engine.go

@@ -2,15 +2,13 @@ package blockchain
 
 import (
 	"context"
+	"crypto/sha256"
 	"fmt"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/pkg/errors"
-	"github.com/prysmaticlabs/prysm/v5/async/event"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
-	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed"
-	statefeed "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed/state"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/transition"
@@ -30,6 +28,8 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
+const blobCommitmentVersionKZG uint8 = 0x01
+
 var defaultLatestValidHash = bytesutil.PadTo([]byte{0xff}, 32)
 
 // notifyForkchoiceUpdate signals execution engine the fork choice updates. Execution engine should:
@@ -39,7 +39,7 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *fcuConfig) (*
 	ctx, span := trace.StartSpan(ctx, "blockChain.notifyForkchoiceUpdate")
 	defer span.End()
 
-	if arg.headBlock == nil || arg.headBlock.IsNil() {
+	if arg.headBlock.IsNil() {
 		log.Error("Head block is nil")
 		return nil, nil
 	}
@@ -72,7 +72,6 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *fcuConfig) (*
 	if arg.attributes == nil {
 		arg.attributes = payloadattribute.EmptyWithVersion(headBlk.Version())
 	}
-	go firePayloadAttributesEvent(ctx, s.cfg.StateNotifier.StateFeed(), arg)
 	payloadID, lastValidHash, err := s.cfg.ExecutionEngineCaller.ForkchoiceUpdated(ctx, fcs, arg.attributes)
 	if err != nil {
 		switch {
@@ -171,38 +170,6 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *fcuConfig) (*
 	return payloadID, nil
 }
 
-func firePayloadAttributesEvent(ctx context.Context, f event.SubscriberSender, cfg *fcuConfig) {
-	pidx, err := helpers.BeaconProposerIndex(ctx, cfg.headState)
-	if err != nil {
-		log.WithError(err).
-			WithField("head_root", cfg.headRoot[:]).
-			Error("Could not get proposer index for PayloadAttributes event")
-		return
-	}
-	evd := payloadattribute.EventData{
-		ProposerIndex:   pidx,
-		ProposalSlot:    cfg.headState.Slot(),
-		ParentBlockRoot: cfg.headRoot[:],
-		Attributer:      cfg.attributes,
-		HeadRoot:        cfg.headRoot,
-		HeadState:       cfg.headState,
-		HeadBlock:       cfg.headBlock,
-	}
-	if cfg.headBlock != nil && !cfg.headBlock.IsNil() {
-		headPayload, err := cfg.headBlock.Block().Body().Execution()
-		if err != nil {
-			log.WithError(err).Error("Could not get execution payload for head block")
-			return
-		}
-		evd.ParentBlockHash = headPayload.BlockHash()
-		evd.ParentBlockNumber = headPayload.BlockNumber()
-	}
-	f.Send(&feed.Event{
-		Type: statefeed.PayloadAttributes,
-		Data: evd,
-	})
-}
-
 // getPayloadHash returns the payload hash given the block root.
 // if the block is before bellatrix fork epoch, it returns the zero hash.
 func (s *Service) getPayloadHash(ctx context.Context, root []byte) ([32]byte, error) {
@@ -252,28 +219,17 @@ func (s *Service) notifyNewPayload(ctx context.Context, preStateVersion int,
 	}
 
 	var lastValidHash []byte
-	var parentRoot *common.Hash
-	var versionedHashes []common.Hash
-	var requests *enginev1.ExecutionRequests
 	if blk.Version() >= version.Deneb {
+		var versionedHashes []common.Hash
 		versionedHashes, err = kzgCommitmentsToVersionedHashes(blk.Block().Body())
 		if err != nil {
 			return false, errors.Wrap(err, "could not get versioned hashes to feed the engine")
 		}
-		prh := common.Hash(blk.Block().ParentRoot())
-		parentRoot = &prh
+		pr := common.Hash(blk.Block().ParentRoot())
+		lastValidHash, err = s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload, versionedHashes, &pr)
+	} else {
+		lastValidHash, err = s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload, []common.Hash{}, &common.Hash{} /*empty version hashes and root before Deneb*/)
 	}
-	if blk.Version() >= version.Electra {
-		requests, err = blk.Block().Body().ExecutionRequests()
-		if err != nil {
-			return false, errors.Wrap(err, "could not get execution requests")
-		}
-		if requests == nil {
-			return false, errors.New("nil execution requests")
-		}
-	}
-	lastValidHash, err = s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload, versionedHashes, parentRoot, requests)
-
 	switch {
 	case err == nil:
 		newPayloadValidNodeCount.Inc()
@@ -365,16 +321,15 @@ func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState,
 		return emptyAttri
 	}
 
-	v := st.Version()
-
-	if v >= version.Deneb {
+	var attr payloadattribute.Attributer
+	switch st.Version() {
+	case version.Deneb, version.Electra:
 		withdrawals, _, err := st.ExpectedWithdrawals()
 		if err != nil {
 			log.WithError(err).Error("Could not get expected withdrawals to get payload attribute")
 			return emptyAttri
 		}
-
-		attr, err := payloadattribute.New(&enginev1.PayloadAttributesV3{
+		attr, err = payloadattribute.New(&enginev1.PayloadAttributesV3{
 			Timestamp:             uint64(t.Unix()),
 			PrevRandao:            prevRando,
 			SuggestedFeeRecipient: val.FeeRecipient[:],
@@ -385,18 +340,13 @@ func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState,
 			log.WithError(err).Error("Could not get payload attribute")
 			return emptyAttri
 		}
-
-		return attr
-	}
-
-	if v >= version.Capella {
+	case version.Capella:
 		withdrawals, _, err := st.ExpectedWithdrawals()
 		if err != nil {
 			log.WithError(err).Error("Could not get expected withdrawals to get payload attribute")
 			return emptyAttri
 		}
-
-		attr, err := payloadattribute.New(&enginev1.PayloadAttributesV2{
+		attr, err = payloadattribute.New(&enginev1.PayloadAttributesV2{
 			Timestamp:             uint64(t.Unix()),
 			PrevRandao:            prevRando,
 			SuggestedFeeRecipient: val.FeeRecipient[:],
@@ -406,12 +356,8 @@ func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState,
 			log.WithError(err).Error("Could not get payload attribute")
 			return emptyAttri
 		}
-
-		return attr
-	}
-
-	if v >= version.Bellatrix {
-		attr, err := payloadattribute.New(&enginev1.PayloadAttributes{
+	case version.Bellatrix:
+		attr, err = payloadattribute.New(&enginev1.PayloadAttributes{
 			Timestamp:             uint64(t.Unix()),
 			PrevRandao:            prevRando,
 			SuggestedFeeRecipient: val.FeeRecipient[:],
@@ -420,12 +366,12 @@ func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState,
 			log.WithError(err).Error("Could not get payload attribute")
 			return emptyAttri
 		}
-
-		return attr
+	default:
+		log.WithField("version", st.Version()).Error("Could not get payload attribute due to unknown state version")
+		return emptyAttri
 	}
 
-	log.WithField("version", version.String(st.Version())).Error("Could not get payload attribute due to unknown state version")
-	return emptyAttri
+	return attr
 }
 
 // removeInvalidBlockAndState removes the invalid block, blob and its corresponding state from the cache and DB.
@@ -456,7 +402,13 @@ func kzgCommitmentsToVersionedHashes(body interfaces.ReadOnlyBeaconBlockBody) ([
 
 	versionedHashes := make([]common.Hash, len(commitments))
 	for i, commitment := range commitments {
-		versionedHashes[i] = primitives.ConvertKzgCommitmentToVersionedHash(commitment)
+		versionedHashes[i] = ConvertKzgCommitmentToVersionedHash(commitment)
 	}
 	return versionedHashes, nil
 }
+
+func ConvertKzgCommitmentToVersionedHash(commitment []byte) common.Hash {
+	versionedHash := sha256.Sum256(commitment)
+	versionedHash[0] = blobCommitmentVersionKZG
+	return versionedHash
+}

beacon-chain/blockchain/execution_engine_test.go

@@ -1135,14 +1135,9 @@ func TestComputePayloadAttribute(t *testing.T) {
 	// Cache hit, advance state, no fee recipient
 	slot := primitives.Slot(1)
 	service.cfg.PayloadIDCache.Set(slot, [32]byte{}, [8]byte{})
-	blk := util.NewBeaconBlockBellatrix()
-	signed, err := consensusblocks.NewSignedBeaconBlock(blk)
-	require.NoError(t, err)
-	roblock, err := consensusblocks.NewROBlockWithRoot(signed, [32]byte{'a'})
-	require.NoError(t, err)
 	cfg := &postBlockProcessConfig{
-		ctx:     ctx,
-		roblock: roblock,
+		ctx:       ctx,
+		blockRoot: [32]byte{'a'},
 	}
 	fcu := &fcuConfig{
 		headState:     st,

beacon-chain/blockchain/forkchoice_update_execution.go

@@ -12,9 +12,9 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	payloadattribute "github.com/prysmaticlabs/prysm/v5/consensus-types/payload-attribute"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
-	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	"github.com/sirupsen/logrus"
+	"go.opencensus.io/trace"
 )
 
 func (s *Service) isNewHead(r [32]byte) bool {

beacon-chain/blockchain/head.go

@@ -11,7 +11,6 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/v5/config/features"
 	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
@@ -405,19 +404,13 @@ func (s *Service) saveOrphanedOperations(ctx context.Context, orphanedRoot [32]b
 			if a.GetData().Slot+params.BeaconConfig().SlotsPerEpoch < s.CurrentSlot() {
 				continue
 			}
-			if features.Get().EnableExperimentalAttestationPool {
-				if err = s.cfg.AttestationCache.Add(a); err != nil {
+			if helpers.IsAggregated(a) {
+				if err := s.cfg.AttPool.SaveAggregatedAttestation(a); err != nil {
 					return err
 				}
 			} else {
-				if a.IsAggregated() {
-					if err = s.cfg.AttPool.SaveAggregatedAttestation(a); err != nil {
-						return err
-					}
-				} else {
-					if err = s.cfg.AttPool.SaveUnaggregatedAttestation(a); err != nil {
-						return err
-					}
+				if err := s.cfg.AttPool.SaveUnaggregatedAttestation(a); err != nil {
+					return err
 				}
 			}
 			saveOrphanedAttCount.Inc()

beacon-chain/blockchain/holeskyhack.go

@@ -1,21 +0,0 @@
-package blockchain
-
-import (
-	"encoding/hex"
-
-	"github.com/pkg/errors"
-)
-
-var errHoleskyForbiddenRoot = errors.New("refusing to process forbidden holesky block")
-
-// hack to prevent bad holesky block importation
-var badHoleskyRoot [32]byte
-
-func init() {
-	hexStr := "2db899881ed8546476d0b92c6aa9110bea9a4cd0dbeb5519eb0ea69575f1f359"
-	bytes, err := hex.DecodeString(hexStr)
-	if err != nil {
-		panic(err)
-	}
-	badHoleskyRoot = [32]byte(bytes)
-}

beacon-chain/blockchain/kzg/BUILD.bazel

@@ -3,6 +3,7 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
     name = "go_default_library",
     srcs = [
+        "kzg.go",
         "trusted_setup.go",
         "validation.go",
     ],
@@ -12,6 +13,9 @@ go_library(
     deps = [
         "//consensus-types/blocks:go_default_library",
         "@com_github_crate_crypto_go_kzg_4844//:go_default_library",
+        "@com_github_ethereum_c_kzg_4844//bindings/go:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
+        "@com_github_ethereum_go_ethereum//crypto/kzg4844:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
     ],
 )
@@ -26,7 +30,8 @@ go_test(
     deps = [
         "//consensus-types/blocks:go_default_library",
         "//testing/require:go_default_library",
-        "//testing/util:go_default_library",
+        "@com_github_consensys_gnark_crypto//ecc/bls12-381/fr:go_default_library",
         "@com_github_crate_crypto_go_kzg_4844//:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
     ],
 )

beacon-chain/blockchain/kzg/kzg.go

@@ -0,0 +1,109 @@
+package kzg
+
+import (
+	"errors"
+
+	ckzg4844 "github.com/ethereum/c-kzg-4844/bindings/go"
+	"github.com/ethereum/go-ethereum/crypto/kzg4844"
+)
+
+// BytesPerBlob is the number of bytes in a single blob.
+const BytesPerBlob = ckzg4844.BytesPerBlob
+
+// Blob represents a serialized chunk of data.
+type Blob [BytesPerBlob]byte
+
+// BytesPerCell is the number of bytes in a single cell.
+const BytesPerCell = ckzg4844.BytesPerCell
+
+// Cell represents a chunk of an encoded Blob.
+type Cell [BytesPerCell]byte
+
+// Commitment represent a KZG commitment to a Blob.
+type Commitment [48]byte
+
+// Proof represents a KZG proof that attests to the validity of a Blob or parts of it.
+type Proof [48]byte
+
+// Bytes48 is a 48-byte array.
+type Bytes48 = ckzg4844.Bytes48
+
+// Bytes32 is a 32-byte array.
+type Bytes32 = ckzg4844.Bytes32
+
+// CellsAndProofs represents the Cells and Proofs corresponding to
+// a single blob.
+type CellsAndProofs struct {
+	Cells  []Cell
+	Proofs []Proof
+}
+
+func BlobToKZGCommitment(blob *Blob) (Commitment, error) {
+	comm, err := kzg4844.BlobToCommitment(kzg4844.Blob(*blob))
+	if err != nil {
+		return Commitment{}, err
+	}
+	return Commitment(comm), nil
+}
+
+func ComputeBlobKZGProof(blob *Blob, commitment Commitment) (Proof, error) {
+	proof, err := kzg4844.ComputeBlobProof(kzg4844.Blob(*blob), kzg4844.Commitment(commitment))
+	if err != nil {
+		return [48]byte{}, err
+	}
+	return Proof(proof), nil
+}
+
+func ComputeCellsAndKZGProofs(blob *Blob) (CellsAndProofs, error) {
+	ckzgBlob := (*ckzg4844.Blob)(blob)
+	ckzgCells, ckzgProofs, err := ckzg4844.ComputeCellsAndKZGProofs(ckzgBlob)
+	if err != nil {
+		return CellsAndProofs{}, err
+	}
+
+	return makeCellsAndProofs(ckzgCells[:], ckzgProofs[:])
+}
+
+func VerifyCellKZGProofBatch(commitmentsBytes []Bytes48, cellIndices []uint64, cells []Cell, proofsBytes []Bytes48) (bool, error) {
+	// Convert `Cell` type to `ckzg4844.Cell`
+	ckzgCells := make([]ckzg4844.Cell, len(cells))
+	for i := range cells {
+		ckzgCells[i] = ckzg4844.Cell(cells[i])
+	}
+
+	return ckzg4844.VerifyCellKZGProofBatch(commitmentsBytes, cellIndices, ckzgCells, proofsBytes)
+}
+
+func RecoverCellsAndKZGProofs(cellIndices []uint64, partialCells []Cell) (CellsAndProofs, error) {
+	// Convert `Cell` type to `ckzg4844.Cell`
+	ckzgPartialCells := make([]ckzg4844.Cell, len(partialCells))
+	for i := range partialCells {
+		ckzgPartialCells[i] = ckzg4844.Cell(partialCells[i])
+	}
+
+	ckzgCells, ckzgProofs, err := ckzg4844.RecoverCellsAndKZGProofs(cellIndices, ckzgPartialCells)
+	if err != nil {
+		return CellsAndProofs{}, err
+	}
+
+	return makeCellsAndProofs(ckzgCells[:], ckzgProofs[:])
+}
+
+// Convert cells/proofs to the CellsAndProofs type defined in this package.
+func makeCellsAndProofs(ckzgCells []ckzg4844.Cell, ckzgProofs []ckzg4844.KZGProof) (CellsAndProofs, error) {
+	if len(ckzgCells) != len(ckzgProofs) {
+		return CellsAndProofs{}, errors.New("different number of cells/proofs")
+	}
+
+	var cells []Cell
+	var proofs []Proof
+	for i := range ckzgCells {
+		cells = append(cells, Cell(ckzgCells[i]))
+		proofs = append(proofs, Proof(ckzgProofs[i]))
+	}
+
+	return CellsAndProofs{
+		Cells:  cells,
+		Proofs: proofs,
+	}, nil
+}

beacon-chain/blockchain/kzg/trusted_setup.go

@@ -5,6 +5,8 @@ import (
 	"encoding/json"
 
 	GoKZG "github.com/crate-crypto/go-kzg-4844"
+	CKZG "github.com/ethereum/c-kzg-4844/bindings/go"
+	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/pkg/errors"
 )
 
@@ -12,17 +14,53 @@ var (
 	//go:embed trusted_setup.json
 	embeddedTrustedSetup []byte // 1.2Mb
 	kzgContext           *GoKZG.Context
+	kzgLoaded            bool
 )
 
+type TrustedSetup struct {
+	G1Monomial [GoKZG.ScalarsPerBlob]GoKZG.G1CompressedHexStr `json:"g1_monomial"`
+	G1Lagrange [GoKZG.ScalarsPerBlob]GoKZG.G1CompressedHexStr `json:"g1_lagrange"`
+	G2Monomial [65]GoKZG.G2CompressedHexStr                   `json:"g2_monomial"`
+}
+
 func Start() error {
-	parsedSetup := GoKZG.JSONTrustedSetup{}
-	err := json.Unmarshal(embeddedTrustedSetup, &parsedSetup)
+	trustedSetup := &TrustedSetup{}
+	err := json.Unmarshal(embeddedTrustedSetup, trustedSetup)
 	if err != nil {
 		return errors.Wrap(err, "could not parse trusted setup JSON")
 	}
-	kzgContext, err = GoKZG.NewContext4096(&parsedSetup)
+	kzgContext, err = GoKZG.NewContext4096(&GoKZG.JSONTrustedSetup{
+		SetupG2:         trustedSetup.G2Monomial[:],
+		SetupG1Lagrange: trustedSetup.G1Lagrange})
 	if err != nil {
 		return errors.Wrap(err, "could not initialize go-kzg context")
 	}
+
+	// Length of a G1 point, converted from hex to binary.
+	g1MonomialBytes := make([]byte, len(trustedSetup.G1Monomial)*(len(trustedSetup.G1Monomial[0])-2)/2)
+	for i, g1 := range &trustedSetup.G1Monomial {
+		copy(g1MonomialBytes[i*(len(g1)-2)/2:], hexutil.MustDecode(g1))
+	}
+	// Length of a G1 point, converted from hex to binary.
+	g1LagrangeBytes := make([]byte, len(trustedSetup.G1Lagrange)*(len(trustedSetup.G1Lagrange[0])-2)/2)
+	for i, g1 := range &trustedSetup.G1Lagrange {
+		copy(g1LagrangeBytes[i*(len(g1)-2)/2:], hexutil.MustDecode(g1))
+	}
+	// Length of a G2 point, converted from hex to binary.
+	g2MonomialBytes := make([]byte, len(trustedSetup.G2Monomial)*(len(trustedSetup.G2Monomial[0])-2)/2)
+	for i, g2 := range &trustedSetup.G2Monomial {
+		copy(g2MonomialBytes[i*(len(g2)-2)/2:], hexutil.MustDecode(g2))
+	}
+	if !kzgLoaded {
+		// TODO: Provide a configuration option for this.
+		var precompute uint = 8
+
+		// Free the current trusted setup before running this method. CKZG
+		// panics if the same setup is run multiple times.
+		if err = CKZG.LoadTrustedSetup(g1MonomialBytes, g1LagrangeBytes, g2MonomialBytes, precompute); err != nil {
+			panic(err)
+		}
+	}
+	kzgLoaded = true
 	return nil
 }

beacon-chain/blockchain/kzg/validation.go

@@ -20,17 +20,16 @@ func Verify(sidecars ...blocks.ROBlob) error {
 	cmts := make([]GoKZG.KZGCommitment, len(sidecars))
 	proofs := make([]GoKZG.KZGProof, len(sidecars))
 	for i, sidecar := range sidecars {
-		blobs[i] = *bytesToBlob(sidecar.Blob)
+		blobs[i] = bytesToBlob(sidecar.Blob)
 		cmts[i] = bytesToCommitment(sidecar.KzgCommitment)
 		proofs[i] = bytesToKZGProof(sidecar.KzgProof)
 	}
 	return kzgContext.VerifyBlobKZGProofBatch(blobs, cmts, proofs)
 }
 
-func bytesToBlob(blob []byte) *GoKZG.Blob {
-	var ret GoKZG.Blob
+func bytesToBlob(blob []byte) (ret GoKZG.Blob) {
 	copy(ret[:], blob)
-	return &ret
+	return
 }
 
 func bytesToCommitment(commitment []byte) (ret GoKZG.KZGCommitment) {

beacon-chain/blockchain/kzg/validation_test.go

@@ -1,20 +1,57 @@
 package kzg
 
 import (
+	"bytes"
+	"crypto/sha256"
+	"encoding/binary"
 	"testing"
 
+	"github.com/consensys/gnark-crypto/ecc/bls12-381/fr"
 	GoKZG "github.com/crate-crypto/go-kzg-4844"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
-	"github.com/prysmaticlabs/prysm/v5/testing/util"
+	"github.com/sirupsen/logrus"
 )
 
+func deterministicRandomness(seed int64) [32]byte {
+	// Converts an int64 to a byte slice
+	buf := new(bytes.Buffer)
+	err := binary.Write(buf, binary.BigEndian, seed)
+	if err != nil {
+		logrus.WithError(err).Error("Failed to write int64 to bytes buffer")
+		return [32]byte{}
+	}
+	bytes := buf.Bytes()
+
+	return sha256.Sum256(bytes)
+}
+
+// Returns a serialized random field element in big-endian
+func GetRandFieldElement(seed int64) [32]byte {
+	bytes := deterministicRandomness(seed)
+	var r fr.Element
+	r.SetBytes(bytes[:])
+
+	return GoKZG.SerializeScalar(r)
+}
+
+// Returns a random blob using the passed seed as entropy
+func GetRandBlob(seed int64) GoKZG.Blob {
+	var blob GoKZG.Blob
+	bytesPerBlob := GoKZG.ScalarsPerBlob * GoKZG.SerializedScalarSize
+	for i := 0; i < bytesPerBlob; i += GoKZG.SerializedScalarSize {
+		fieldElementBytes := GetRandFieldElement(seed + int64(i))
+		copy(blob[i:i+GoKZG.SerializedScalarSize], fieldElementBytes[:])
+	}
+	return blob
+}
+
 func GenerateCommitmentAndProof(blob GoKZG.Blob) (GoKZG.KZGCommitment, GoKZG.KZGProof, error) {
-	commitment, err := kzgContext.BlobToKZGCommitment(&blob, 0)
+	commitment, err := kzgContext.BlobToKZGCommitment(blob, 0)
 	if err != nil {
 		return GoKZG.KZGCommitment{}, GoKZG.KZGProof{}, err
 	}
-	proof, err := kzgContext.ComputeBlobKZGProof(&blob, commitment, 0)
+	proof, err := kzgContext.ComputeBlobKZGProof(blob, commitment, 0)
 	if err != nil {
 		return GoKZG.KZGCommitment{}, GoKZG.KZGProof{}, err
 	}
@@ -31,13 +68,13 @@ func TestBytesToAny(t *testing.T) {
 	blob := GoKZG.Blob{0x01, 0x02}
 	commitment := GoKZG.KZGCommitment{0x01, 0x02}
 	proof := GoKZG.KZGProof{0x01, 0x02}
-	require.DeepEqual(t, blob, *bytesToBlob(bytes))
+	require.DeepEqual(t, blob, bytesToBlob(bytes))
 	require.DeepEqual(t, commitment, bytesToCommitment(bytes))
 	require.DeepEqual(t, proof, bytesToKZGProof(bytes))
 }
 
 func TestGenerateCommitmentAndProof(t *testing.T) {
-	blob := util.GetRandBlob(123)
+	blob := GetRandBlob(123)
 	commitment, proof, err := GenerateCommitmentAndProof(blob)
 	require.NoError(t, err)
 	expectedCommitment := GoKZG.KZGCommitment{180, 218, 156, 194, 59, 20, 10, 189, 186, 254, 132, 93, 7, 127, 104, 172, 238, 240, 237, 70, 83, 89, 1, 152, 99, 0, 165, 65, 143, 62, 20, 215, 230, 14, 205, 95, 28, 245, 54, 25, 160, 16, 178, 31, 232, 207, 38, 85}

beacon-chain/blockchain/log.go

@@ -69,22 +69,6 @@ func logStateTransitionData(b interfaces.ReadOnlyBeaconBlock) error {
 			log = log.WithField("kzgCommitmentCount", len(kzgs))
 		}
 	}
-	if b.Version() >= version.Electra {
-		eReqs, err := b.Body().ExecutionRequests()
-		if err != nil {
-			log.WithError(err).Error("Failed to get execution requests")
-		} else {
-			if len(eReqs.Deposits) > 0 {
-				log = log.WithField("depositRequestCount", len(eReqs.Deposits))
-			}
-			if len(eReqs.Consolidations) > 0 {
-				log = log.WithField("consolidationRequestCount", len(eReqs.Consolidations))
-			}
-			if len(eReqs.Withdrawals) > 0 {
-				log = log.WithField("withdrawalRequestCount", len(eReqs.Withdrawals))
-			}
-		}
-	}
 	log.Info("Finished applying state transition")
 	return nil
 }

beacon-chain/blockchain/options.go

@@ -85,14 +85,6 @@ func WithTrackedValidatorsCache(c *cache.TrackedValidatorsCache) Option {
 	}
 }
 
-// WithAttestationCache for attestation lifecycle after chain inclusion.
-func WithAttestationCache(c *cache.AttestationCache) Option {
-	return func(s *Service) error {
-		s.cfg.AttestationCache = c
-		return nil
-	}
-}
-
 // WithAttestationPool for attestation lifecycle after chain inclusion.
 func WithAttestationPool(p attestations.Pool) Option {
 	return func(s *Service) error {
@@ -126,9 +118,9 @@ func WithBLSToExecPool(p blstoexec.PoolManager) Option {
 }
 
 // WithP2PBroadcaster to broadcast messages after appropriate processing.
-func WithP2PBroadcaster(p p2p.Broadcaster) Option {
+func WithP2PBroadcaster(p p2p.Acceser) Option {
 	return func(s *Service) error {
-		s.cfg.P2p = p
+		s.cfg.P2P = p
 		return nil
 	}
 }
@@ -213,10 +205,3 @@ func WithSyncChecker(checker Checker) Option {
 		return nil
 	}
 }
-
-func WithSlasherEnabled(enabled bool) Option {
-	return func(s *Service) error {
-		s.slasherEnabled = enabled
-		return nil
-	}
-}

beacon-chain/blockchain/pow_block.go

@@ -46,7 +46,7 @@ func (s *Service) validateMergeBlock(ctx context.Context, b interfaces.ReadOnlyS
 	if err != nil {
 		return err
 	}
-	if payload == nil || payload.IsNil() {
+	if payload.IsNil() {
 		return errors.New("nil execution payload")
 	}
 	ok, err := canUseValidatedTerminalBlockHash(b.Block().Slot(), payload)

beacon-chain/blockchain/process_attestation.go

@@ -7,10 +7,10 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
-	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1/attestation"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
+	"go.opencensus.io/trace"
 )
 
 // OnAttestation is called whenever an attestation is received, verifies the attestation is valid and saves

beacon-chain/blockchain/process_attestation_test.go

@@ -32,18 +32,18 @@ func TestStore_OnAttestation_ErrorConditions(t *testing.T) {
 	util.SaveBlock(t, ctx, beaconDB, blkWithoutState)
 
 	cp := &ethpb.Checkpoint{}
-	st, roblock, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, cp, cp)
+	st, blkRoot, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, cp, cp)
 	require.NoError(t, err)
-	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
 
 	blkWithStateBadAtt := util.NewBeaconBlock()
 	blkWithStateBadAtt.Block.Slot = 1
 	r, err := blkWithStateBadAtt.Block.HashTreeRoot()
 	require.NoError(t, err)
 	cp = &ethpb.Checkpoint{Root: r[:]}
-	st, roblock, err = prepareForkchoiceState(ctx, blkWithStateBadAtt.Block.Slot, r, [32]byte{}, params.BeaconConfig().ZeroHash, cp, cp)
+	st, blkRoot, err = prepareForkchoiceState(ctx, blkWithStateBadAtt.Block.Slot, r, [32]byte{}, params.BeaconConfig().ZeroHash, cp, cp)
 	require.NoError(t, err)
-	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
 	util.SaveBlock(t, ctx, beaconDB, blkWithStateBadAtt)
 	BlkWithStateBadAttRoot, err := blkWithStateBadAtt.Block.HashTreeRoot()
 	require.NoError(t, err)
@@ -92,12 +92,12 @@ func TestStore_OnAttestation_ErrorConditions(t *testing.T) {
 		{
 			name:      "process nil attestation",
 			a:         nil,
-			wantedErr: "attestation is nil",
+			wantedErr: "attestation can't be nil",
 		},
 		{
 			name:      "process nil field (a.Data) in attestation",
 			a:         &ethpb.Attestation{},
-			wantedErr: "attestation is nil",
+			wantedErr: "attestation's data can't be nil",
 		},
 		{
 			name: "process nil field (a.Target) in attestation",
@@ -139,9 +139,9 @@ func TestStore_OnAttestation_Ok_DoublyLinkedTree(t *testing.T) {
 		require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, copied, tRoot))
 		ojc := &ethpb.Checkpoint{Epoch: 0, Root: tRoot[:]}
 		ofc := &ethpb.Checkpoint{Epoch: 0, Root: tRoot[:]}
-		state, roblock, err := prepareForkchoiceState(ctx, 0, tRoot, tRoot, params.BeaconConfig().ZeroHash, ojc, ofc)
+		state, blkRoot, err := prepareForkchoiceState(ctx, 0, tRoot, tRoot, params.BeaconConfig().ZeroHash, ojc, ofc)
 		require.NoError(t, err)
-		require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, state, roblock))
+		require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, state, blkRoot))
 		require.NoError(t, service.OnAttestation(ctx, att[0], 0))
 	}
 
@@ -318,9 +318,10 @@ func TestStore_UpdateCheckpointState(t *testing.T) {
 	require.NoError(t, err)
 	checkpoint := &ethpb.Checkpoint{Epoch: epoch, Root: r1[:]}
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, baseState, bytesutil.ToBytes32(checkpoint.Root)))
-	st, roblock, err := prepareForkchoiceState(ctx, blk.Block.Slot, r1, [32]byte{}, params.BeaconConfig().ZeroHash, checkpoint, checkpoint)
+	st, blkRoot, err := prepareForkchoiceState(ctx, blk.Block.Slot, r1, [32]byte{}, params.BeaconConfig().ZeroHash, checkpoint, checkpoint)
 	require.NoError(t, err)
-	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, r1))
 	returned, err := service.getAttPreState(ctx, checkpoint)
 	require.NoError(t, err)
 	assert.Equal(t, params.BeaconConfig().SlotsPerEpoch.Mul(uint64(checkpoint.Epoch)), returned.Slot(), "Incorrectly returned base state")
@@ -336,9 +337,10 @@ func TestStore_UpdateCheckpointState(t *testing.T) {
 	require.NoError(t, err)
 	newCheckpoint := &ethpb.Checkpoint{Epoch: epoch, Root: r2[:]}
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, baseState, bytesutil.ToBytes32(newCheckpoint.Root)))
-	st, roblock, err = prepareForkchoiceState(ctx, blk.Block.Slot, r2, r1, params.BeaconConfig().ZeroHash, newCheckpoint, newCheckpoint)
+	st, blkRoot, err = prepareForkchoiceState(ctx, blk.Block.Slot, r2, r1, params.BeaconConfig().ZeroHash, newCheckpoint, newCheckpoint)
 	require.NoError(t, err)
-	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, r2))
 	returned, err = service.getAttPreState(ctx, newCheckpoint)
 	require.NoError(t, err)
 	s, err := slots.EpochStart(newCheckpoint.Epoch)

beacon-chain/blockchain/process_block.go

@@ -3,11 +3,15 @@ package blockchain
 import (
 	"context"
 	"fmt"
+	"slices"
 	"time"
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed"
+	statefeed "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed/state"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/peerdas"
 	coreTime "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/transition"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/das"
@@ -15,6 +19,7 @@ import (
 	forkchoicetypes "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/types"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/features"
+	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	consensusblocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
@@ -43,7 +48,8 @@ var initialSyncBlockCacheSize = uint64(2 * params.BeaconConfig().SlotsPerEpoch)
 // process the beacon block after validating the state transition function
 type postBlockProcessConfig struct {
 	ctx            context.Context
-	roblock        consensusblocks.ROBlock
+	signed         interfaces.ReadOnlySignedBeaconBlock
+	blockRoot      [32]byte
 	headRoot       [32]byte
 	postState      state.BeaconState
 	isValidPayload bool
@@ -57,7 +63,7 @@ func (s *Service) postBlockProcess(cfg *postBlockProcessConfig) error {
 	ctx, span := trace.StartSpan(cfg.ctx, "blockChain.onBlock")
 	defer span.End()
 	cfg.ctx = ctx
-	if err := consensusblocks.BeaconBlockIsNil(cfg.roblock); err != nil {
+	if err := consensusblocks.BeaconBlockIsNil(cfg.signed); err != nil {
 		return invalidBlock{error: err}
 	}
 	startTime := time.Now()
@@ -66,29 +72,22 @@ func (s *Service) postBlockProcess(cfg *postBlockProcessConfig) error {
 	if s.inRegularSync() {
 		defer s.handleSecondFCUCall(cfg, fcuArgs)
 	}
-	if features.Get().EnableLightClient && slots.ToEpoch(s.CurrentSlot()) >= params.BeaconConfig().AltairForkEpoch {
-		defer s.processLightClientUpdates(cfg)
-		defer s.saveLightClientUpdate(cfg)
-		defer s.saveLightClientBootstrap(cfg)
-	}
+	defer s.sendLightClientFeeds(cfg)
 	defer s.sendStateFeedOnBlock(cfg)
 	defer reportProcessingTime(startTime)
-	defer reportAttestationInclusion(cfg.roblock.Block())
+	defer reportAttestationInclusion(cfg.signed.Block())
 
-	err := s.cfg.ForkChoiceStore.InsertNode(ctx, cfg.postState, cfg.roblock)
+	err := s.cfg.ForkChoiceStore.InsertNode(ctx, cfg.postState, cfg.blockRoot)
 	if err != nil {
-		// Do not use parent context in the event it deadlined
-		ctx = trace.NewContext(context.Background(), span)
-		s.rollbackBlock(ctx, cfg.roblock.Root())
-		return errors.Wrapf(err, "could not insert block %d to fork choice store", cfg.roblock.Block().Slot())
+		return errors.Wrapf(err, "could not insert block %d to fork choice store", cfg.signed.Block().Slot())
 	}
-	if err := s.handleBlockAttestations(ctx, cfg.roblock.Block(), cfg.postState); err != nil {
+	if err := s.handleBlockAttestations(ctx, cfg.signed.Block(), cfg.postState); err != nil {
 		return errors.Wrap(err, "could not handle block's attestations")
 	}
 
-	s.InsertSlashingsToForkChoiceStore(ctx, cfg.roblock.Block().Body().AttesterSlashings())
+	s.InsertSlashingsToForkChoiceStore(ctx, cfg.signed.Block().Body().AttesterSlashings())
 	if cfg.isValidPayload {
-		if err := s.cfg.ForkChoiceStore.SetOptimisticToValid(ctx, cfg.roblock.Root()); err != nil {
+		if err := s.cfg.ForkChoiceStore.SetOptimisticToValid(ctx, cfg.blockRoot); err != nil {
 			return errors.Wrap(err, "could not set optimistic block to valid")
 		}
 	}
@@ -98,8 +97,8 @@ func (s *Service) postBlockProcess(cfg *postBlockProcessConfig) error {
 		log.WithError(err).Warn("Could not update head")
 	}
 	newBlockHeadElapsedTime.Observe(float64(time.Since(start).Milliseconds()))
-	if cfg.headRoot != cfg.roblock.Root() {
-		s.logNonCanonicalBlockReceived(cfg.roblock.Root(), cfg.headRoot)
+	if cfg.headRoot != cfg.blockRoot {
+		s.logNonCanonicalBlockReceived(cfg.blockRoot, cfg.headRoot)
 		return nil
 	}
 	if err := s.getFCUArgs(cfg, fcuArgs); err != nil {
@@ -157,7 +156,7 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []consensusblocks.ROBlo
 	}
 
 	// Fill in missing blocks
-	if err := s.fillInForkChoiceMissingBlocks(ctx, blks[0], preState.CurrentJustifiedCheckpoint(), preState.FinalizedCheckpoint()); err != nil {
+	if err := s.fillInForkChoiceMissingBlocks(ctx, blks[0].Block(), preState.CurrentJustifiedCheckpoint(), preState.FinalizedCheckpoint()); err != nil {
 		return errors.Wrap(err, "could not fill in missing blocks to forkchoice")
 	}
 
@@ -173,9 +172,6 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []consensusblocks.ROBlo
 	var set *bls.SignatureBatch
 	boundaries := make(map[[32]byte]state.BeaconState)
 	for i, b := range blks {
-		if b.Root() == badHoleskyRoot {
-			return errHoleskyForbiddenRoot
-		}
 		v, h, err := getStateVersionAndPayload(preState)
 		if err != nil {
 			return err
@@ -240,7 +236,7 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []consensusblocks.ROBlo
 		if err := avs.IsDataAvailable(ctx, s.CurrentSlot(), b); err != nil {
 			return errors.Wrapf(err, "could not validate blob data availability at slot %d", b.Block().Slot())
 		}
-		args := &forkchoicetypes.BlockAndCheckpoints{Block: b,
+		args := &forkchoicetypes.BlockAndCheckpoints{Block: b.Block(),
 			JustifiedCheckpoint: jCheckpoints[i],
 			FinalizedCheckpoint: fCheckpoints[i]}
 		pendingNodes[len(blks)-i-1] = args
@@ -285,7 +281,7 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []consensusblocks.ROBlo
 		return errors.Wrap(err, "could not insert batch to forkchoice")
 	}
 	// Insert the last block to forkchoice
-	if err := s.cfg.ForkChoiceStore.InsertNode(ctx, preState, lastB); err != nil {
+	if err := s.cfg.ForkChoiceStore.InsertNode(ctx, preState, lastBR); err != nil {
 		return errors.Wrap(err, "could not insert last block in batch to forkchoice")
 	}
 	// Set their optimistic status
@@ -382,11 +378,7 @@ func (s *Service) handleBlockAttestations(ctx context.Context, blk interfaces.Re
 		r := bytesutil.ToBytes32(a.GetData().BeaconBlockRoot)
 		if s.cfg.ForkChoiceStore.HasNode(r) {
 			s.cfg.ForkChoiceStore.ProcessAttestation(ctx, indices, r, a.GetData().Target.Epoch)
-		} else if features.Get().EnableExperimentalAttestationPool {
-			if err = s.cfg.AttestationCache.Add(a); err != nil {
-				return err
-			}
-		} else if err = s.cfg.AttPool.SaveBlockAttestation(a); err != nil {
+		} else if err := s.cfg.AttPool.SaveBlockAttestation(a); err != nil {
 			return err
 		}
 	}
@@ -414,9 +406,6 @@ func (s *Service) savePostStateInfo(ctx context.Context, r [32]byte, b interface
 		return errors.Wrapf(err, "could not save block from slot %d", b.Block().Slot())
 	}
 	if err := s.cfg.StateGen.SaveState(ctx, r, st); err != nil {
-		// Do not use parent context in the event it deadlined
-		ctx = trace.NewContext(context.Background(), span)
-		s.rollbackBlock(ctx, r)
 		return errors.Wrap(err, "could not save state")
 	}
 	return nil
@@ -426,11 +415,7 @@ func (s *Service) savePostStateInfo(ctx context.Context, r [32]byte, b interface
 func (s *Service) pruneAttsFromPool(headBlock interfaces.ReadOnlySignedBeaconBlock) error {
 	atts := headBlock.Block().Body().Attestations()
 	for _, att := range atts {
-		if features.Get().EnableExperimentalAttestationPool {
-			if err := s.cfg.AttestationCache.DeleteCovered(att); err != nil {
-				return errors.Wrap(err, "could not delete attestation")
-			}
-		} else if att.IsAggregated() {
+		if helpers.IsAggregated(att) {
 			if err := s.cfg.AttPool.DeleteAggregatedAttestation(att); err != nil {
 				return err
 			}
@@ -507,30 +492,62 @@ func (s *Service) runLateBlockTasks() {
 // It returns a map where each key represents a missing BlobSidecar index.
 // An empty map means we have all indices; a non-empty map can be used to compare incoming
 // BlobSidecars against the set of known missing sidecars.
-func missingIndices(bs *filesystem.BlobStorage, root [32]byte, expected [][]byte, slot primitives.Slot) (map[uint64]struct{}, error) {
-	maxBlobsPerBlock := params.BeaconConfig().MaxBlobsPerBlock(slot)
+func missingIndices(bs *filesystem.BlobStorage, root [32]byte, expected [][]byte) (map[uint64]struct{}, error) {
 	if len(expected) == 0 {
 		return nil, nil
 	}
-	if len(expected) > maxBlobsPerBlock {
+	if len(expected) > fieldparams.MaxBlobsPerBlock {
 		return nil, errMaxBlobsExceeded
 	}
-	indices := bs.Summary(root)
+	indices, err := bs.Indices(root)
+	if err != nil {
+		return nil, errors.Wrap(err, "indices")
+	}
 	missing := make(map[uint64]struct{}, len(expected))
 	for i := range expected {
-		if len(expected[i]) > 0 && !indices.HasIndex(uint64(i)) {
-			missing[uint64(i)] = struct{}{}
+		ui := uint64(i)
+		if len(expected[i]) > 0 {
+			if !indices[i] {
+				missing[ui] = struct{}{}
+			}
 		}
 	}
 	return missing, nil
 }
 
+func missingDataColumns(bs *filesystem.BlobStorage, root [32]byte, expected map[uint64]bool) (map[uint64]bool, error) {
+	if len(expected) == 0 {
+		return nil, nil
+	}
+
+	if len(expected) > int(params.BeaconConfig().NumberOfColumns) {
+		return nil, errMaxDataColumnsExceeded
+	}
+
+	indices, err := bs.ColumnIndices(root)
+	if err != nil {
+		return nil, err
+	}
+
+	missing := make(map[uint64]bool, len(expected))
+	for col := range expected {
+		if !indices[col] {
+			missing[col] = true
+		}
+	}
+
+	return missing, nil
+}
+
 // isDataAvailable blocks until all BlobSidecars committed to in the block are available,
 // or an error or context cancellation occurs. A nil result means that the data availability check is successful.
 // The function will first check the database to see if all sidecars have been persisted. If any
 // sidecars are missing, it will then read from the blobNotifier channel for the given root until the channel is
 // closed, the context hits cancellation/timeout, or notifications have been received for all the missing sidecars.
 func (s *Service) isDataAvailable(ctx context.Context, root [32]byte, signed interfaces.ReadOnlySignedBeaconBlock) error {
+	if coreTime.PeerDASIsActive(signed.Block().Slot()) {
+		return s.isDataColumnsAvailable(ctx, root, signed)
+	}
 	if signed.Version() < version.Deneb {
 		return nil
 	}
@@ -558,9 +575,9 @@ func (s *Service) isDataAvailable(ctx context.Context, root [32]byte, signed int
 		return nil
 	}
 	// get a map of BlobSidecar indices that are not currently available.
-	missing, err := missingIndices(s.blobStorage, root, kzgCommitments, block.Slot())
+	missing, err := missingIndices(s.blobStorage, root, kzgCommitments)
 	if err != nil {
-		return err
+		return errors.Wrap(err, "missing indices")
 	}
 	// If there are no missing indices, all BlobSidecars are available.
 	if len(missing) == 0 {
@@ -569,7 +586,7 @@ func (s *Service) isDataAvailable(ctx context.Context, root [32]byte, signed int
 
 	// The gossip handler for blobs writes the index of each verified blob referencing the given
 	// root to the channel returned by blobNotifiers.forRoot.
-	nc := s.blobNotifiers.forRoot(root, block.Slot())
+	nc := s.blobNotifiers.forRoot(root)
 
 	// Log for DA checks that cross over into the next slot; helpful for debugging.
 	nextSlot := slots.BeginsAt(signed.Block().Slot()+1, s.genesisTime)
@@ -579,8 +596,13 @@ func (s *Service) isDataAvailable(ctx context.Context, root [32]byte, signed int
 			if len(missing) == 0 {
 				return
 			}
-			log.WithFields(daCheckLogFields(root, signed.Block().Slot(), expected, len(missing))).
-				Error("Still waiting for DA check at slot end.")
+
+			log.WithFields(logrus.Fields{
+				"slot":          signed.Block().Slot(),
+				"root":          fmt.Sprintf("%#x", root),
+				"blobsExpected": expected,
+				"blobsWaiting":  len(missing),
+			}).Error("Still waiting for blobs DA check at slot end.")
 		})
 		defer nst.Stop()
 	}
@@ -602,12 +624,145 @@ func (s *Service) isDataAvailable(ctx context.Context, root [32]byte, signed int
 	}
 }
 
-func daCheckLogFields(root [32]byte, slot primitives.Slot, expected, missing int) logrus.Fields {
-	return logrus.Fields{
-		"slot":          slot,
-		"root":          fmt.Sprintf("%#x", root),
-		"blobsExpected": expected,
-		"blobsWaiting":  missing,
+func (s *Service) isDataColumnsAvailable(ctx context.Context, root [32]byte, signed interfaces.ReadOnlySignedBeaconBlock) error {
+	if signed.Version() < version.Deneb {
+		return nil
+	}
+
+	block := signed.Block()
+	if block == nil {
+		return errors.New("invalid nil beacon block")
+	}
+	// We are only required to check within MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS
+	if !params.WithinDAPeriod(slots.ToEpoch(block.Slot()), slots.ToEpoch(s.CurrentSlot())) {
+		return nil
+	}
+
+	body := block.Body()
+	if body == nil {
+		return errors.New("invalid nil beacon block body")
+	}
+
+	kzgCommitments, err := body.BlobKzgCommitments()
+	if err != nil {
+		return errors.Wrap(err, "blob KZG commitments")
+	}
+
+	// If block has not commitments there is nothing to wait for.
+	if len(kzgCommitments) == 0 {
+		return nil
+	}
+
+	colMap, err := peerdas.CustodyColumns(s.cfg.P2P.NodeID(), peerdas.CustodySubnetCount())
+	if err != nil {
+		return errors.Wrap(err, "custody columns")
+	}
+
+	// colMap represents the data columnns a node is expected to custody.
+	if len(colMap) == 0 {
+		return nil
+	}
+
+	// Subscribe to newsly data columns stored in the database.
+	rootIndexChan := make(chan filesystem.RootIndexPair)
+	subscription := s.blobStorage.DataColumnFeed.Subscribe(rootIndexChan)
+	defer subscription.Unsubscribe()
+
+	// Get the count of data columns we already have in the store.
+	retrievedDataColumns, err := s.blobStorage.ColumnIndices(root)
+	if err != nil {
+		return errors.Wrap(err, "column indices")
+	}
+
+	retrievedDataColumnsCount := uint64(len(retrievedDataColumns))
+
+	// As soon as we have more than half of the data columns, we can reconstruct the missing ones.
+	// We don't need to wait for the rest of the data columns to declare the block as available.
+	if peerdas.CanSelfReconstruct(retrievedDataColumnsCount) {
+		return nil
+	}
+
+	// Get a map of data column indices that are not currently available.
+	missingMap, err := missingDataColumns(s.blobStorage, root, colMap)
+	if err != nil {
+		return err
+	}
+
+	// If there are no missing indices, all data column sidecars are available.
+	// This is the happy path.
+	if len(missingMap) == 0 {
+		return nil
+	}
+
+	// Log for DA checks that cross over into the next slot; helpful for debugging.
+	nextSlot := slots.BeginsAt(signed.Block().Slot()+1, s.genesisTime)
+	// Avoid logging if DA check is called after next slot start.
+	if nextSlot.After(time.Now()) {
+		// Compute sorted slice of expected columns.
+		expected := make([]uint64, 0, len(colMap))
+		for col := range colMap {
+			expected = append(expected, col)
+		}
+
+		slices.Sort[[]uint64](expected)
+
+		// Compute sorted slice of missing columns.
+		missing := make([]uint64, 0, len(missingMap))
+		for col := range missingMap {
+			missing = append(missing, col)
+		}
+
+		slices.Sort[[]uint64](missing)
+
+		nst := time.AfterFunc(time.Until(nextSlot), func() {
+			if len(missingMap) == 0 {
+				return
+			}
+
+			log.WithFields(logrus.Fields{
+				"slot":            signed.Block().Slot(),
+				"root":            fmt.Sprintf("%#x", root),
+				"columnsExpected": expected,
+				"columnsWaiting":  missing,
+			}).Error("Still waiting for data columns DA check at slot end.")
+		})
+		defer nst.Stop()
+	}
+
+	for {
+		select {
+		case rootIndex := <-rootIndexChan:
+			if rootIndex.Root != root {
+				// This is not the root we are looking for.
+				continue
+			}
+
+			// This is a data column we are expecting.
+			if _, ok := missingMap[rootIndex.Index]; ok {
+				retrievedDataColumnsCount++
+			}
+
+			// As soon as we have more than half of the data columns, we can reconstruct the missing ones.
+			// We don't need to wait for the rest of the data columns to declare the block as available.
+			if peerdas.CanSelfReconstruct(retrievedDataColumnsCount) {
+				return nil
+			}
+
+			// Remove the index from the missing map.
+			delete(missingMap, rootIndex.Index)
+
+			// Exit if there is no more missing data columns.
+			if len(missingMap) == 0 {
+				return nil
+			}
+		case <-ctx.Done():
+			missingIndexes := make([]uint64, 0, len(missingMap))
+			for val := range missingMap {
+				copiedVal := val
+				missingIndexes = append(missingIndexes, copiedVal)
+			}
+			return errors.Wrapf(ctx.Err(), "context deadline waiting for data column sidecars slot: %d, BlockRoot: %#x, missing %v", block.Slot(), root, missingIndexes)
+		}
 	}
 }
 
@@ -626,6 +781,9 @@ func (s *Service) lateBlockTasks(ctx context.Context) {
 	if !s.inRegularSync() {
 		return
 	}
+	s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
+		Type: statefeed.MissedSlot,
+	})
 	s.headLock.RLock()
 	headRoot := s.headRoot()
 	headState := s.headState(ctx)
@@ -653,13 +811,6 @@ func (s *Service) lateBlockTasks(ctx context.Context) {
 	attribute := s.getPayloadAttribute(ctx, headState, s.CurrentSlot()+1, headRoot[:])
 	// return early if we are not proposing next slot
 	if attribute.IsEmpty() {
-		fcuArgs := &fcuConfig{
-			headState:  headState,
-			headRoot:   headRoot,
-			headBlock:  nil,
-			attributes: attribute,
-		}
-		go firePayloadAttributesEvent(ctx, s.cfg.StateNotifier.StateFeed(), fcuArgs)
 		return
 	}
 
@@ -694,21 +845,9 @@ func (s *Service) waitForSync() error {
 	}
 }
 
-func (s *Service) handleInvalidExecutionError(ctx context.Context, err error, blockRoot [32]byte, parentRoot [32]byte) error {
+func (s *Service) handleInvalidExecutionError(ctx context.Context, err error, blockRoot, parentRoot [32]byte) error {
 	if IsInvalidBlock(err) && InvalidBlockLVH(err) != [32]byte{} {
 		return s.pruneInvalidBlock(ctx, blockRoot, parentRoot, InvalidBlockLVH(err))
 	}
 	return err
 }
-
-// In the event of an issue processing a block we rollback changes done to the db and our caches
-// to always ensure that the node's internal state is consistent.
-func (s *Service) rollbackBlock(ctx context.Context, blockRoot [32]byte) {
-	log.Warnf("Rolling back insertion of block with root %#x due to processing error", blockRoot)
-	if err := s.cfg.StateGen.DeleteStateFromCaches(ctx, blockRoot); err != nil {
-		log.WithError(err).Errorf("Could not delete state from caches with block root %#x", blockRoot)
-	}
-	if err := s.cfg.BeaconDB.DeleteBlock(ctx, blockRoot); err != nil {
-		log.WithError(err).Errorf("Could not delete block with block root %#x", blockRoot)
-	}
-}

beacon-chain/blockchain/process_block_helpers.go

@@ -1,13 +1,10 @@
 package blockchain
 
 import (
-	"bytes"
 	"context"
 	"fmt"
-	"strings"
 	"time"
 
-	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	lightclient "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/light-client"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -18,14 +15,15 @@ import (
 	doublylinkedtree "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/doubly-linked-tree"
 	forkchoicetypes "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/types"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/config/features"
 	field_params "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
-	consensus_blocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	mathutil "github.com/prysmaticlabs/prysm/v5/math"
 	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
+	ethpbv2 "github.com/prysmaticlabs/prysm/v5/proto/eth/v2"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	"github.com/sirupsen/logrus"
@@ -44,7 +42,7 @@ func (s *Service) getFCUArgs(cfg *postBlockProcessConfig, fcuArgs *fcuConfig) er
 	if !s.inRegularSync() {
 		return nil
 	}
-	slot := cfg.roblock.Block().Slot()
+	slot := cfg.signed.Block().Slot()
 	if slots.WithinVotingWindow(uint64(s.genesisTime.Unix()), slot) {
 		return nil
 	}
@@ -52,9 +50,9 @@ func (s *Service) getFCUArgs(cfg *postBlockProcessConfig, fcuArgs *fcuConfig) er
 }
 
 func (s *Service) getFCUArgsEarlyBlock(cfg *postBlockProcessConfig, fcuArgs *fcuConfig) error {
-	if cfg.roblock.Root() == cfg.headRoot {
+	if cfg.blockRoot == cfg.headRoot {
 		fcuArgs.headState = cfg.postState
-		fcuArgs.headBlock = cfg.roblock
+		fcuArgs.headBlock = cfg.signed
 		fcuArgs.headRoot = cfg.headRoot
 		fcuArgs.proposingSlot = s.CurrentSlot() + 1
 		return nil
@@ -98,7 +96,7 @@ func (s *Service) fcuArgsNonCanonicalBlock(cfg *postBlockProcessConfig, fcuArgs
 
 // sendStateFeedOnBlock sends an event that a new block has been synced
 func (s *Service) sendStateFeedOnBlock(cfg *postBlockProcessConfig) {
-	optimistic, err := s.cfg.ForkChoiceStore.IsOptimistic(cfg.roblock.Root())
+	optimistic, err := s.cfg.ForkChoiceStore.IsOptimistic(cfg.blockRoot)
 	if err != nil {
 		log.WithError(err).Debug("Could not check if block is optimistic")
 		optimistic = true
@@ -107,209 +105,135 @@ func (s *Service) sendStateFeedOnBlock(cfg *postBlockProcessConfig) {
 	s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
 		Type: statefeed.BlockProcessed,
 		Data: &statefeed.BlockProcessedData{
-			Slot:        cfg.roblock.Block().Slot(),
-			BlockRoot:   cfg.roblock.Root(),
-			SignedBlock: cfg.roblock,
+			Slot:        cfg.signed.Block().Slot(),
+			BlockRoot:   cfg.blockRoot,
+			SignedBlock: cfg.signed,
 			Verified:    true,
 			Optimistic:  optimistic,
 		},
 	})
 }
 
-func (s *Service) processLightClientUpdates(cfg *postBlockProcessConfig) {
-	if err := s.processLightClientOptimisticUpdate(cfg.ctx, cfg.roblock, cfg.postState); err != nil {
-		log.WithError(err).Error("Failed to process light client optimistic update")
-	}
-	if err := s.processLightClientFinalityUpdate(cfg.ctx, cfg.roblock, cfg.postState); err != nil {
-		log.WithError(err).Error("Failed to process light client finality update")
+// sendLightClientFeeds sends the light client feeds when feature flag is enabled.
+func (s *Service) sendLightClientFeeds(cfg *postBlockProcessConfig) {
+	if features.Get().EnableLightClient {
+		if _, err := s.sendLightClientOptimisticUpdate(cfg.ctx, cfg.signed, cfg.postState); err != nil {
+			log.WithError(err).Error("Failed to send light client optimistic update")
+		}
+
+		// Get the finalized checkpoint
+		finalized := s.ForkChoicer().FinalizedCheckpoint()
+
+		// LightClientFinalityUpdate needs super majority
+		s.tryPublishLightClientFinalityUpdate(cfg.ctx, cfg.signed, finalized, cfg.postState)
 	}
 }
 
-// saveLightClientUpdate saves the light client update for this block
-// if it's better than the already saved one, when feature flag is enabled.
-func (s *Service) saveLightClientUpdate(cfg *postBlockProcessConfig) {
-	attestedRoot := cfg.roblock.Block().ParentRoot()
-	attestedBlock, err := s.getBlock(cfg.ctx, attestedRoot)
+func (s *Service) tryPublishLightClientFinalityUpdate(ctx context.Context, signed interfaces.ReadOnlySignedBeaconBlock, finalized *forkchoicetypes.Checkpoint, postState state.BeaconState) {
+	if finalized.Epoch <= s.lastPublishedLightClientEpoch {
+		return
+	}
+
+	config := params.BeaconConfig()
+	if finalized.Epoch < config.AltairForkEpoch {
+		return
+	}
+
+	syncAggregate, err := signed.Block().Body().SyncAggregate()
+	if err != nil || syncAggregate == nil {
+		return
+	}
+
+	// LightClientFinalityUpdate needs super majority
+	if syncAggregate.SyncCommitteeBits.Count()*3 < config.SyncCommitteeSize*2 {
+		return
+	}
+
+	_, err = s.sendLightClientFinalityUpdate(ctx, signed, postState)
 	if err != nil {
-		log.WithError(err).Errorf("Saving light client update failed: Could not get attested block for root %#x", attestedRoot)
-		return
-	}
-	if attestedBlock == nil || attestedBlock.IsNil() {
-		log.Error("Saving light client update failed: Attested block is nil")
-		return
-	}
-	attestedState, err := s.cfg.StateGen.StateByRoot(cfg.ctx, attestedRoot)
-	if err != nil {
-		log.WithError(err).Errorf("Saving light client update failed: Could not get attested state for root %#x", attestedRoot)
-		return
-	}
-	if attestedState == nil || attestedState.IsNil() {
-		log.Error("Saving light client update failed: Attested state is nil")
-		return
-	}
-
-	finalizedRoot := attestedState.FinalizedCheckpoint().Root
-	finalizedBlock, err := s.getBlock(cfg.ctx, [32]byte(finalizedRoot))
-	if err != nil {
-		if errors.Is(err, errBlockNotFoundInCacheOrDB) {
-			log.Debugf("Skipping saving light client update: Finalized block is nil for root %#x", finalizedRoot)
-		} else {
-			log.WithError(err).Errorf("Saving light client update failed: Could not get finalized block for root %#x", finalizedRoot)
-		}
-		return
-	}
-
-	update, err := lightclient.NewLightClientUpdateFromBeaconState(
-		cfg.ctx,
-		s.CurrentSlot(),
-		cfg.postState,
-		cfg.roblock,
-		attestedState,
-		attestedBlock,
-		finalizedBlock,
-	)
-	if err != nil {
-		log.WithError(err).Error("Saving light client update failed: Could not create light client update")
-		return
-	}
-
-	period := slots.SyncCommitteePeriod(slots.ToEpoch(attestedState.Slot()))
-
-	oldUpdate, err := s.cfg.BeaconDB.LightClientUpdate(cfg.ctx, period)
-	if err != nil {
-		log.WithError(err).Error("Saving light client update failed: Could not get current light client update")
-		return
-	}
-
-	if oldUpdate == nil {
-		if err := s.cfg.BeaconDB.SaveLightClientUpdate(cfg.ctx, period, update); err != nil {
-			log.WithError(err).Error("Saving light client update failed: Could not save light client update")
-		} else {
-			log.WithField("period", period).Debug("Saving light client update: Saved new update")
-		}
-		return
-	}
-
-	isNewUpdateBetter, err := lightclient.IsBetterUpdate(update, oldUpdate)
-	if err != nil {
-		log.WithError(err).Error("Saving light client update failed: Could not compare light client updates")
-		return
-	}
-
-	if isNewUpdateBetter {
-		if err := s.cfg.BeaconDB.SaveLightClientUpdate(cfg.ctx, period, update); err != nil {
-			log.WithError(err).Error("Saving light client update failed: Could not save light client update")
-		} else {
-			log.WithField("period", period).Debug("Saving light client update: Saved new update")
-		}
+		log.WithError(err).Error("Failed to send light client finality update")
 	} else {
-		log.WithField("period", period).Debug("Saving light client update: New update is not better than the current one. Skipping save.")
+		s.lastPublishedLightClientEpoch = finalized.Epoch
 	}
 }
 
-// saveLightClientBootstrap saves a light client bootstrap for this block
-// when feature flag is enabled.
-func (s *Service) saveLightClientBootstrap(cfg *postBlockProcessConfig) {
-	blockRoot := cfg.roblock.Root()
-	bootstrap, err := lightclient.NewLightClientBootstrapFromBeaconState(cfg.ctx, s.CurrentSlot(), cfg.postState, cfg.roblock)
-	if err != nil {
-		log.WithError(err).Error("Saving light client bootstrap failed: Could not create light client bootstrap")
-		return
-	}
-	err = s.cfg.BeaconDB.SaveLightClientBootstrap(cfg.ctx, blockRoot[:], bootstrap)
-	if err != nil {
-		log.WithError(err).Error("Saving light client bootstrap failed: Could not save light client bootstrap in DB")
-	}
-}
-
-func (s *Service) processLightClientFinalityUpdate(
-	ctx context.Context,
-	signed interfaces.ReadOnlySignedBeaconBlock,
-	postState state.BeaconState,
-) error {
+// sendLightClientFinalityUpdate sends a light client finality update notification to the state feed.
+func (s *Service) sendLightClientFinalityUpdate(ctx context.Context, signed interfaces.ReadOnlySignedBeaconBlock,
+	postState state.BeaconState) (int, error) {
+	// Get attested state
 	attestedRoot := signed.Block().ParentRoot()
-	attestedBlock, err := s.cfg.BeaconDB.Block(ctx, attestedRoot)
-	if err != nil {
-		return errors.Wrapf(err, "could not get attested block for root %#x", attestedRoot)
-	}
 	attestedState, err := s.cfg.StateGen.StateByRoot(ctx, attestedRoot)
 	if err != nil {
-		return errors.Wrapf(err, "could not get attested state for root %#x", attestedRoot)
+		return 0, errors.Wrap(err, "could not get attested state")
 	}
 
-	finalizedCheckpoint := attestedState.FinalizedCheckpoint()
-
-	// Check if the finalized checkpoint has changed
-	if finalizedCheckpoint == nil || bytes.Equal(finalizedCheckpoint.GetRoot(), postState.FinalizedCheckpoint().Root) {
-		return nil
-	}
-
-	finalizedRoot := bytesutil.ToBytes32(finalizedCheckpoint.Root)
-	finalizedBlock, err := s.cfg.BeaconDB.Block(ctx, finalizedRoot)
-	if err != nil {
-		if errors.Is(err, errBlockNotFoundInCacheOrDB) {
-			log.Debugf("Skipping processing light client finality update: Finalized block is nil for root %#x", finalizedRoot)
-			return nil
+	// Get finalized block
+	var finalizedBlock interfaces.ReadOnlySignedBeaconBlock
+	finalizedCheckPoint := attestedState.FinalizedCheckpoint()
+	if finalizedCheckPoint != nil {
+		finalizedRoot := bytesutil.ToBytes32(finalizedCheckPoint.Root)
+		finalizedBlock, err = s.cfg.BeaconDB.Block(ctx, finalizedRoot)
+		if err != nil {
+			finalizedBlock = nil
 		}
-		return errors.Wrapf(err, "could not get finalized block for root %#x", finalizedRoot)
 	}
 
 	update, err := lightclient.NewLightClientFinalityUpdateFromBeaconState(
 		ctx,
-		postState.Slot(),
 		postState,
 		signed,
 		attestedState,
-		attestedBlock,
 		finalizedBlock,
 	)
 
 	if err != nil {
-		return errors.Wrap(err, "could not create light client finality update")
+		return 0, errors.Wrap(err, "could not create light client update")
 	}
 
-	s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
+	// Return the result
+	result := &ethpbv2.LightClientFinalityUpdateWithVersion{
+		Version: ethpbv2.Version(signed.Version()),
+		Data:    lightclient.CreateLightClientFinalityUpdate(update),
+	}
+
+	// Send event
+	return s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
 		Type: statefeed.LightClientFinalityUpdate,
-		Data: update,
-	})
-	return nil
+		Data: result,
+	}), nil
 }
 
-func (s *Service) processLightClientOptimisticUpdate(ctx context.Context, signed interfaces.ReadOnlySignedBeaconBlock,
-	postState state.BeaconState) error {
+// sendLightClientOptimisticUpdate sends a light client optimistic update notification to the state feed.
+func (s *Service) sendLightClientOptimisticUpdate(ctx context.Context, signed interfaces.ReadOnlySignedBeaconBlock,
+	postState state.BeaconState) (int, error) {
+	// Get attested state
 	attestedRoot := signed.Block().ParentRoot()
-	attestedBlock, err := s.cfg.BeaconDB.Block(ctx, attestedRoot)
-	if err != nil {
-		return errors.Wrapf(err, "could not get attested block for root %#x", attestedRoot)
-	}
 	attestedState, err := s.cfg.StateGen.StateByRoot(ctx, attestedRoot)
 	if err != nil {
-		return errors.Wrapf(err, "could not get attested state for root %#x", attestedRoot)
+		return 0, errors.Wrap(err, "could not get attested state")
 	}
 
 	update, err := lightclient.NewLightClientOptimisticUpdateFromBeaconState(
 		ctx,
-		postState.Slot(),
 		postState,
 		signed,
 		attestedState,
-		attestedBlock,
 	)
 
 	if err != nil {
-		if strings.Contains(err.Error(), lightclient.ErrNotEnoughSyncCommitteeBits) {
-			log.WithError(err).Debug("Skipping processing light client optimistic update")
-			return nil
-		}
-		return errors.Wrap(err, "could not create light client optimistic update")
+		return 0, errors.Wrap(err, "could not create light client update")
 	}
 
-	s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
-		Type: statefeed.LightClientOptimisticUpdate,
-		Data: update,
-	})
+	// Return the result
+	result := &ethpbv2.LightClientOptimisticUpdateWithVersion{
+		Version: ethpbv2.Version(signed.Version()),
+		Data:    lightclient.CreateLightClientOptimisticUpdate(update),
+	}
 
-	return nil
+	return s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
+		Type: statefeed.LightClientOptimisticUpdate,
+		Data: result,
+	}), nil
 }
 
 // updateCachesPostBlockProcessing updates the next slot cache and handles the epoch
@@ -318,21 +242,20 @@ func (s *Service) processLightClientOptimisticUpdate(ctx context.Context, signed
 // before sending FCU to the engine.
 func (s *Service) updateCachesPostBlockProcessing(cfg *postBlockProcessConfig) error {
 	slot := cfg.postState.Slot()
-	root := cfg.roblock.Root()
-	if err := transition.UpdateNextSlotCache(cfg.ctx, root[:], cfg.postState); err != nil {
+	if err := transition.UpdateNextSlotCache(cfg.ctx, cfg.blockRoot[:], cfg.postState); err != nil {
 		return errors.Wrap(err, "could not update next slot state cache")
 	}
 	if !slots.IsEpochEnd(slot) {
 		return nil
 	}
-	return s.handleEpochBoundary(cfg.ctx, slot, cfg.postState, root[:])
+	return s.handleEpochBoundary(cfg.ctx, slot, cfg.postState, cfg.blockRoot[:])
 }
 
 // handleSecondFCUCall handles a second call to FCU when syncing a new block.
 // This is useful when proposing in the next block and we want to defer the
 // computation of the next slot shuffling.
 func (s *Service) handleSecondFCUCall(cfg *postBlockProcessConfig, fcuArgs *fcuConfig) {
-	if (fcuArgs.attributes == nil || fcuArgs.attributes.IsEmpty()) && cfg.headRoot == cfg.roblock.Root() {
+	if (fcuArgs.attributes == nil || fcuArgs.attributes.IsEmpty()) && cfg.headRoot == cfg.blockRoot {
 		go s.sendFCUWithAttributes(cfg, fcuArgs)
 	}
 }
@@ -348,7 +271,7 @@ func reportProcessingTime(startTime time.Time) {
 // called on blocks that arrive after the attestation voting window, or in a
 // background routine after syncing early blocks.
 func (s *Service) computePayloadAttributes(cfg *postBlockProcessConfig, fcuArgs *fcuConfig) error {
-	if cfg.roblock.Root() == cfg.headRoot {
+	if cfg.blockRoot == cfg.headRoot {
 		if err := s.updateCachesPostBlockProcessing(cfg); err != nil {
 			return err
 		}
@@ -505,7 +428,7 @@ func (s *Service) ancestorByDB(ctx context.Context, r [32]byte, slot primitives.
 
 // This retrieves missing blocks from DB (ie. the blocks that couldn't be received over sync) and inserts them to fork choice store.
 // This is useful for block tree visualizer and additional vote accounting.
-func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, signed interfaces.ReadOnlySignedBeaconBlock,
+func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, blk interfaces.ReadOnlyBeaconBlock,
 	fCheckpoint, jCheckpoint *ethpb.Checkpoint) error {
 	pendingNodes := make([]*forkchoicetypes.BlockAndCheckpoints, 0)
 
@@ -515,15 +438,10 @@ func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, signed inte
 	if err != nil {
 		return err
 	}
-	// The first block can have a bogus root since the block is not inserted in forkchoice
-	roblock, err := consensus_blocks.NewROBlockWithRoot(signed, [32]byte{})
-	if err != nil {
-		return err
-	}
-	pendingNodes = append(pendingNodes, &forkchoicetypes.BlockAndCheckpoints{Block: roblock,
+	pendingNodes = append(pendingNodes, &forkchoicetypes.BlockAndCheckpoints{Block: blk,
 		JustifiedCheckpoint: jCheckpoint, FinalizedCheckpoint: fCheckpoint})
 	// As long as parent node is not in fork choice store, and parent node is in DB.
-	root := roblock.Block().ParentRoot()
+	root := blk.ParentRoot()
 	for !s.cfg.ForkChoiceStore.HasNode(root) && s.cfg.BeaconDB.HasBlock(ctx, root) {
 		b, err := s.getBlock(ctx, root)
 		if err != nil {
@@ -532,12 +450,8 @@ func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, signed inte
 		if b.Block().Slot() <= fSlot {
 			break
 		}
-		roblock, err := consensus_blocks.NewROBlockWithRoot(b, root)
-		if err != nil {
-			return err
-		}
 		root = b.Block().ParentRoot()
-		args := &forkchoicetypes.BlockAndCheckpoints{Block: roblock,
+		args := &forkchoicetypes.BlockAndCheckpoints{Block: b.Block(),
 			JustifiedCheckpoint: jCheckpoint,
 			FinalizedCheckpoint: fCheckpoint}
 		pendingNodes = append(pendingNodes, args)
@@ -553,8 +467,7 @@ func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, signed inte
 
 // inserts finalized deposits into our finalized deposit trie, needs to be
 // called in the background
-// Post-Electra: prunes all proofs and pending deposits in the cache
-func (s *Service) insertFinalizedDepositsAndPrune(ctx context.Context, fRoot [32]byte) {
+func (s *Service) insertFinalizedDeposits(ctx context.Context, fRoot [32]byte) {
 	ctx, span := trace.StartSpan(ctx, "blockChain.insertFinalizedDeposits")
 	defer span.End()
 	startTime := time.Now()
@@ -565,16 +478,6 @@ func (s *Service) insertFinalizedDepositsAndPrune(ctx context.Context, fRoot [32
 		log.WithError(err).Error("could not fetch finalized state")
 		return
 	}
-
-	// Check if we should prune all pending deposits.
-	// In post-Electra(after the legacy deposit mechanism is deprecated),
-	// we can prune all pending deposits in the deposit cache.
-	// See: https://eips.ethereum.org/EIPS/eip-6110#eth1data-poll-deprecation
-	if helpers.DepositRequestsStarted(finalizedState) {
-		s.pruneAllPendingDepositsAndProofs(ctx)
-		return
-	}
-
 	// We update the cache up to the last deposit index in the finalized block's state.
 	// We can be confident that these deposits will be included in some block
 	// because the Eth1 follow distance makes such long-range reorgs extremely unlikely.
@@ -603,12 +506,6 @@ func (s *Service) insertFinalizedDepositsAndPrune(ctx context.Context, fRoot [32
 	log.WithField("duration", time.Since(startTime).String()).Debugf("Finalized deposit insertion completed at index %d", finalizedEth1DepIdx)
 }
 
-// pruneAllPendingDepositsAndProofs prunes all proofs and pending deposits in the cache.
-func (s *Service) pruneAllPendingDepositsAndProofs(ctx context.Context) {
-	s.cfg.DepositCache.PruneAllPendingDeposits(ctx)
-	s.cfg.DepositCache.PruneAllProofs(ctx)
-}
-
 // This ensures that the input root defaults to using genesis root instead of zero hashes. This is needed for handling
 // fork choice justification routine.
 func (s *Service) ensureRootNotZeros(root [32]byte) [32]byte {