changelog

moved http-util to api package, and merged with api util. renamed grpc to grpcutil"
2026-01-10 22:07:59 -05:00 · 2025-04-03 16:46:04 -05:00 · 2025-04-03 16:34:27 -05:00
2940 changed files with 28339 additions and 38889 deletions
--- a/.buildkite-bazelrc
+++ b/.buildkite-bazelrc
@@ -50,7 +50,7 @@ build:nostamp --nostamp

 # Build metadata
 build --build_metadata=ROLE=CI
-build --build_metadata=REPO_URL=https://github.com/OffchainLabs/prysm.git
+build --build_metadata=REPO_URL=https://github.com/prysmaticlabs/prysm.git
 build --workspace_status_command=./hack/workspace_status_ci.sh

 # Buildbuddy
--- a/.deepsource.toml
+++ b/.deepsource.toml
@@ -11,7 +11,7 @@ name = "go"
 enabled = true

 [analyzers.meta]
-import_paths = ["github.com/OffchainLabs/prysm/v6"]
+import_paths = ["github.com/prysmaticlabs/prysm/v5"]

 [[analyzers]]
 name = "test-coverage"
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: go
-go_import_path: github.com/OffchainLabs/prysm
+go_import_path: github.com/prysmaticlabs/prysm
 sudo: false
 matrix:
  include:
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -6,13 +6,13 @@ load("@io_bazel_rules_go//go:def.bzl", "nogo")
 load("@bazel_skylib//rules:common_settings.bzl", "string_setting")
 load("@prysm//tools/nogo_config:def.bzl", "nogo_config_exclude")

-prefix = "github.com/OffchainLabs/prysm"
+prefix = "github.com/prysmaticlabs/prysm"

 exports_files([
    "LICENSE.md",
 ])

-# gazelle:prefix github.com/OffchainLabs/prysm/v6
+# gazelle:prefix github.com/prysmaticlabs/prysm/v5
 # gazelle:map_kind go_library go_library @prysm//tools/go:def.bzl
 # gazelle:map_kind go_test go_test @prysm//tools/go:def.bzl
 # gazelle:map_kind go_repository go_repository @prysm//tools/go:def.bzl
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,64 +4,6 @@ All notable changes to this project will be documented in this file.

 The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

-## [v6.0.0](https://github.com/prysmaticlabs/prysm/compare/v5.3.2...v6.0.0) - 2025-04-21
-
-This release introduces Mainnet support for the upcoming Electra + Prague (Pectra) fork. The fork is scheduled for mainnet epoch 364032 (May 7, 2025, 10:05:11 UTC). You MUST update Prysm Beacon Node, Prysm Validator Client, and your execution layer client to the Pectra ready release prior to the fork to stay on the correct chain.
-
-Besides Pectra, we have more light client API support, cleanups, and a few bugfixes. Please review the changelog below and update your client as soon as practical before May 7.
-
-This release is **mandatory** for all operators before May 7.
-
-### Added
-
- Implemented validator identities Beacon API endpoint. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15086)
- Add SSZ support to light client updates by range API. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15082)
- Add light client ssz types to the spec test. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15097)
- Added the ability for execution requests to be tested in e2e with electra. [[PR]](https://github.com/prysmaticlabs/prysm/pull/14971)
- Add warning messages for gas limit ranges that might be problematic. Low gas limits (≤10% of default) may cause transactions to fail, while high gas limits (>150% of default) could lead to block propagation issues. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15078)
- Add light client store object to the beacon node object. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15120)
- prysmctl option in wrapper script to generate devnet ssz. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15145)
- Add support for Electra fork epoch. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15132)
-
-### Changed
-
- The validator client will no longer use the full list of committee values but instead use the committee length and validator committee index. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15039)
- Remove the header `Content-Disposition` from the `httputil.WriteSSZ` function. No `filename` parameter is needed anymore. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15092)
- Sort attestations in proposer block by reward. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15093)
- More efficient query method for stategen to retrieve blocks between a given state and the replay target block. This avoids attempting to look up blocks that are not needed for head replay queries, which may be missing due to a previous rollback bug. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15063)
- removed old web3signer metrics in favor for a universal one. [[PR]](https://github.com/prysmaticlabs/prysm/pull/14920)
- Deprecated everything related with the gRPC API. [[PR]](https://github.com/prysmaticlabs/prysm/pull/14944)
- Migrate Prysm repo to Offchain Labs organization ahead of Pectra upgrade v6. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15140)
-
-### Deprecated
-
- deprecates and removes usage of the `--trace` flag and`--cpuprofile` flag in favor of just using `--pprof`. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15083)
-
-### Removed
-
- Remove /eth/v1/beacon/states/head/committees call when getting duties. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15039)
- Removed unused hack scripts. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15157)
- Remove `disable-committee-aware-packing` flag. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15162)
- Remove deprecated flags for the major release. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15165)
- Removed Beacon API endpoints which have been deprecated at the Deneb fork. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15166)
-
-### Fixed
-
- The `--rpc` flag will now properly enable the keymanager APIs without web. The `--web` will enable both validator api endpoints and web. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15080)
- Use latest state to pack attestation. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15113)
- Clean up dangling block index entries for blocks that were previously deleted by incomplete cleanup code. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15040)
- Fixed to use io stream instead of stream read. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15089)
- When using a DV, send all aggregations for a slot and committee. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15110)
- Fixed a bug in consolidation request processing. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15122)
- Fix State Getter for pending withdrawal balance. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15123)
- Fixed a bug in checking for attestation lengths in our block. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15134)
- Fix Committee Index Check For Aggregates. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15146)
- Fix filtering by committee index post-Electra in `ListAttestationsV2`. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15148)
- Peers giving invalid data in range syncing are now downscored. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15149)
- Adding fork guard to attestation api endpoints so that it doesn't accidentally include wrong attestation types in the pool. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15161)
- fixed underflow with balances in leaking edge case with expected withdrawals. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15191)
- Attribute block and blob issues to correct peers during range syncing. [[PR]](https://github.com/prysmaticlabs/prysm/pull/15173)
-
 ## [v5.3.2](https://github.com/prysmaticlabs/prysm/compare/v5.3.1...v5.3.2) - 2025-03-25

 This release introduces support for the `Hoodi` testnet.
@@ -3313,4 +3255,4 @@ There are no security updates in this release.

 # Older than v2.0.0

-For changelog history for releases older than v2.0.0, please refer to https://github.com/prysmaticlabs/prysm/releases
+For changelog history for releases older than v2.0.0, please refer to https://github.com/prysmaticlabs/prysm/releases
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,7 +4,7 @@ Note: The latest and most up-to-date documentation can be found on our [docs por

 Excited by our work and want to get involved in building out our sharding releases? Or maybe you haven't learned as much about the Ethereum protocol but are a savvy developer? 

-You can explore our [Open Issues](https://github.com/OffchainLabs/prysm/issues) in-the works for our different releases. Feel free to fork our repo and start creating PR’s after assigning yourself to an issue of interest. We are always chatting on [Discord](https://discord.gg/CTYGPUJ) drop us a line there if you want to get more involved or have any questions on our implementation!
+You can explore our [Open Issues](https://github.com/prysmaticlabs/prysm/issues) in-the works for our different releases. Feel free to fork our repo and start creating PR’s after assigning yourself to an issue of interest. We are always chatting on [Discord](https://discord.gg/CTYGPUJ) drop us a line there if you want to get more involved or have any questions on our implementation!

 > [!IMPORTANT] 
 > Please, **do not send pull requests for trivial changes**, such as typos, these will be rejected. These types of pull requests incur a cost to reviewers and do not provide much value to the project. If you are unsure, please open an issue first to discuss the change.
@@ -15,15 +15,15 @@ You can explore our [Open Issues](https://github.com/OffchainLabs/prysm/issues)

 **2. Fork the Prysm repo.**

-Sign in to your GitHub account or create a new account if you do not have one already. Then navigate your browser to https://github.com/OffchainLabs/prysm/. In the upper right hand corner of the page, click “fork”. This will create a copy of the Prysm repo in your account.
+Sign in to your GitHub account or create a new account if you do not have one already. Then navigate your browser to https://github.com/prysmaticlabs/prysm/. In the upper right hand corner of the page, click “fork”. This will create a copy of the Prysm repo in your account.

 **3. Create a local clone of Prysm.**

 ```
-$ mkdir -p $GOPATH/src/github.com/OffchainLabs
-$ cd $GOPATH/src/github.com/OffchainLabs
-$ git clone https://github.com/OffchainLabs/prysm.git
-$ cd $GOPATH/src/github.com/OffchainLabs/prysm
+$ mkdir -p $GOPATH/src/github.com/prysmaticlabs
+$ cd $GOPATH/src/github.com/prysmaticlabs
+$ git clone https://github.com/prysmaticlabs/prysm.git
+$ cd $GOPATH/src/github.com/prysmaticlabs/prysm
 ```

 **4. Link your local clone to the fork on your GitHub repo.**
@@ -35,13 +35,13 @@ $ git remote add myprysmrepo https://github.com/<your_github_user_name>/prysm.gi
 **5. Link your local clone to the Prysmatic Labs repo so that you can easily fetch future changes to the Prysmatic Labs repo.**

 ```
-$ git remote add prysm https://github.com/OffchainLabs/prysm.git
+$ git remote add prysm https://github.com/prysmaticlabs/prysm.git
 $ git remote -v (you should see myrepo and prysm in the list of remotes)
 ```

 **6. Find an issue to work on.**

-Check out open issues at https://github.com/OffchainLabs/prysm/issues and pick one. Leave a comment to let the development team know that you would like to work on it. Or examine the code for areas that can be improved and leave a comment to the development team to ask if they would like you to work on it.
+Check out open issues at https://github.com/prysmaticlabs/prysm/issues and pick one. Leave a comment to let the development team know that you would like to work on it. Or examine the code for areas that can be improved and leave a comment to the development team to ask if they would like you to work on it.

 **7. Create a local branch with a name that clearly identifies what you will be working on.**

@@ -129,7 +129,7 @@ All PRs must must include a changelog fragment file in the `changelog` directory

 **17. Create a pull request.**

-Navigate your browser to https://github.com/OffchainLabs/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/OffchainLabs/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 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.

 **18. Respond to comments by Core Contributors.**

--- a/DEPENDENCIES.md
+++ b/DEPENDENCIES.md
@@ -2,7 +2,7 @@

 Prysm is go project with many complicated dependencies, including some c++ based libraries. There
 are two parts to Prysm's dependency management. Go modules and bazel managed dependencies. Be sure 
-to read [Why Bazel?](https://github.com/OffchainLabs/documentation/issues/138) to fully
+to read [Why Bazel?](https://github.com/prysmaticlabs/documentation/issues/138) to fully
 understand the reasoning behind an additional layer of build tooling via Bazel rather than a pure
 "go build" project.

@@ -60,7 +60,7 @@ bazel build //beacon-chain --config=release
 Example:

 ```bash
-go get github.com/OffchainLabs/example@v1.2.3
+go get github.com/prysmaticlabs/example@v1.2.3
 bazel run //:gazelle -- update-repos -from_file=go.mod -to_macro=deps.bzl%prysm_deps -prune=true
 ```

--- a/INTEROP.md
+++ b/INTEROP.md
@@ -10,7 +10,7 @@ This README details how to setup Prysm for interop testing for usage with other
 ## Installation & Setup

 1. Install [Bazel](https://docs.bazel.build/versions/master/install.html) **(Recommended)**
-2. `git clone https://github.com/OffchainLabs/prysm && cd prysm`
+2. `git clone https://github.com/prysmaticlabs/prysm && cd prysm`
 3. `bazel build //cmd/...`

 ## Starting from Genesis
--- a/README.md
+++ b/README.md
@@ -3,11 +3,11 @@
 <div align="left">
  
 [![Build status](https://badge.buildkite.com/b555891daf3614bae4284dcf365b2340cefc0089839526f096.svg?branch=master)](https://buildkite.com/prysmatic-labs/prysm)
-[![Go Report Card](https://goreportcard.com/badge/github.com/OffchainLabs/prysm)](https://goreportcard.com/report/github.com/OffchainLabs/prysm)
+[![Go Report Card](https://goreportcard.com/badge/github.com/prysmaticlabs/prysm)](https://goreportcard.com/report/github.com/prysmaticlabs/prysm)
 [![Consensus_Spec_Version 1.4.0](https://img.shields.io/badge/Consensus%20Spec%20Version-v1.4.0-blue.svg)](https://github.com/ethereum/consensus-specs/tree/v1.4.0)
 [![Execution_API_Version 1.0.0-beta.2](https://img.shields.io/badge/Execution%20API%20Version-v1.0.0.beta.2-blue.svg)](https://github.com/ethereum/execution-apis/tree/v1.0.0-beta.2/src/engine)
-[![Discord](https://user-images.githubusercontent.com/7288322/34471967-1df7808a-efbb-11e7-9088-ed0b04151291.png)](https://discord.gg/OffchainLabs)
-[![GitPOAP Badge](https://public-api.gitpoap.io/v1/repo/OffchainLabs/prysm/badge)](https://www.gitpoap.io/gh/OffchainLabs/prysm)
+[![Discord](https://user-images.githubusercontent.com/7288322/34471967-1df7808a-efbb-11e7-9088-ed0b04151291.png)](https://discord.gg/prysmaticlabs)
+[![GitPOAP Badge](https://public-api.gitpoap.io/v1/repo/prysmaticlabs/prysm/badge)](https://www.gitpoap.io/gh/prysmaticlabs/prysm)

 </div>

@@ -17,7 +17,7 @@

 This is the core repository for Prysm, a [Golang](https://golang.org/) implementation of the [Ethereum Consensus](https://ethereum.org/en/developers/docs/consensus-mechanisms/#proof-of-stake) [specification](https://github.com/ethereum/consensus-specs), developed by [Offchain Labs](https://www.offchainlabs.com).

-See the [Changelog](https://github.com/OffchainLabs/prysm/releases) for details of the latest releases and upcoming breaking changes.
+See the [Changelog](https://github.com/prysmaticlabs/prysm/releases) for details of the latest releases and upcoming breaking changes.

 ---

@@ -25,7 +25,7 @@ See the [Changelog](https://github.com/OffchainLabs/prysm/releases) for details

 A detailed set of installation and usage instructions as well as breakdowns of each individual component are available in the **[official documentation portal](https://docs.prylabs.network)**.

-💬 **Need help?** Join our **[Discord Community](https://discord.gg/OffchainLabs)** for support.
+💬 **Need help?** Join our **[Discord Community](https://discord.gg/prysmaticlabs)** for support.

 ---

@@ -46,8 +46,8 @@ To participate in staking, you can join the **[official Ethereum launchpad](http

 Prysm maintains two permanent branches:

- **[`master`](https://github.com/OffchainLabs/prysm/tree/master)** - This points to the latest stable release. It is ideal for most users.
- **[`develop`](https://github.com/OffchainLabs/prysm/tree/develop)** - This is used for development and contains the latest PRs. Developers should base their PRs on this branch.
+- **[`master`](https://github.com/prysmaticlabs/prysm/tree/master)** - This points to the latest stable release. It is ideal for most users.
+- **[`develop`](https://github.com/prysmaticlabs/prysm/tree/develop)** - This is used for development and contains the latest PRs. Developers should base their PRs on this branch.

 ### 🛠 Contribution Guide

--- a/SECURITY.md
+++ b/SECURITY.md
@@ -2,10 +2,10 @@

 ## Supported Versions

-[Releases](https://github.com/OffchainLabs/prysm/releases/) contains all available releases. We recommend using the [most recently released version](https://github.com/OffchainLabs/prysm/releases/latest).
+[Releases](https://github.com/prysmaticlabs/prysm/releases/) contains all available releases. We recommend using the [most recently released version](https://github.com/prysmaticlabs/prysm/releases/latest).

 ## Reporting a Vulnerability

-Please see our signed [security.txt](https://github.com/OffchainLabs/prysm/blob/develop/.well-known/security.txt) for preferred encryption and reporting destination.
+Please see our signed [security.txt](https://github.com/prysmaticlabs/prysm/blob/develop/.well-known/security.txt) for preferred encryption and reporting destination.

 **Please do not file a public ticket** mentioning the vulnerability, as doing so could increase the likelihood of the vulnerability being used before a fix has been created, released and installed on the network.
--- a/26
+++ b/26
@@ -255,7 +255,7 @@ filegroup(
    url = "https://github.com/ethereum/EIPs/archive/5480440fe51742ed23342b68cf106cefd427e39d.tar.gz",
 )

-consensus_spec_version = "v1.5.0-beta.5"
+consensus_spec_version = "v1.5.0-beta.4"

 bls_test_version = "v0.1.1"

@@ -271,7 +271,7 @@ filegroup(
    visibility = ["//visibility:public"],
 )
    """,
-    integrity = "sha256-H+Pt4z+HCVDnEBAv814yvsjR7f5l1IpumjFoTj2XnLE=",
+    integrity = "sha256-QG0NUqaCvP5lKaKKwF/fmeICZVjONMlb7EE+MtYl0C0=",
    url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/general.tar.gz" % consensus_spec_version,
 )

@@ -287,7 +287,7 @@ filegroup(
    visibility = ["//visibility:public"],
 )
    """,
-    integrity = "sha256-Dqiwf5BG7yYyURGf+i87AIdArAyztvcgjoi2kSxrGvo=",
+    integrity = "sha256-8NQngTSSqzW/j3tOUi3r5h+94ChRbLNWTt7BOGqr4+E=",
    url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/minimal.tar.gz" % consensus_spec_version,
 )

@@ -303,7 +303,7 @@ filegroup(
    visibility = ["//visibility:public"],
 )
    """,
-    integrity = "sha256-xrmsFF243pzXHAjh1EQYKS9gtcwmtHK3wRZDSLlVVRk=",
+    integrity = "sha256-gFqxbaBnJ7dtdoj0zFbVrtlHv/bLNuWjrTHkyCAjFjI=",
    url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/mainnet.tar.gz" % consensus_spec_version,
 )

@@ -318,7 +318,7 @@ filegroup(
    visibility = ["//visibility:public"],
 )
    """,
-    integrity = "sha256-c+gGapqifCvFtmtxfhOwieBDO2Syxp13GECWEpWM/Ho=",
+    integrity = "sha256-9paalF0POULpP2ga+4ouHSETKYrWNCUCZoJHPuFw06E=",
    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 +370,6 @@ filegroup(
    url = "https://github.com/eth-clients/holesky/archive/32a72e21c6e53c262f27d50dd540cb654517d03a.tar.gz",  # 2025-03-17
 )

-http_archive(
-    name = "mainnet",
-    build_file_content = """
-filegroup(
-    name = "configs",
-    srcs = [
-        "metadata/config.yaml",
-    ],
-    visibility = ["//visibility:public"],
-)
-""",
-    integrity = "sha256-NZr/gsQK9rBHRnznlPBiNzJpK8MPMrfUa3f+QYqn1+g=",
-    strip_prefix = "mainnet-978f1794eada6f85bee76e4d2d5959a5fb8e0cc5",
-    url = "https://github.com/eth-clients/mainnet/archive/978f1794eada6f85bee76e4d2d5959a5fb8e0cc5.tar.gz",
-)
-
 http_archive(
    name = "sepolia_testnet",
    build_file_content = """
--- a/api/BUILD.bazel
+++ b/api/BUILD.bazel
@@ -2,12 +2,8 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")

 go_library(
    name = "go_default_library",
-    srcs = [
-        "constants.go",
-        "headers.go",
-        "jwt.go",
-    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api",
+    srcs = ["jwt.go"],
+    importpath = "github.com/prysmaticlabs/prysm/v5/api",
    visibility = ["//visibility:public"],
    deps = [
        "//crypto/rand:go_default_library",
--- a/api/apiutil/BUILD.bazel
+++ b/api/apiutil/BUILD.bazel
@@ -1,19 +0,0 @@
-load("@prysm//tools/go:def.bzl", "go_library", "go_test")
-
-go_library(
-    name = "go_default_library",
-    srcs = ["common.go"],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/apiutil",
-    visibility = ["//visibility:public"],
-    deps = ["//consensus-types/primitives:go_default_library"],
-)
-
-go_test(
-    name = "go_default_test",
-    srcs = ["common_test.go"],
-    embed = [":go_default_library"],
-    deps = [
-        "//consensus-types/primitives:go_default_library",
-        "//testing/assert:go_default_library",
-    ],
-)
--- a/api/client/BUILD.bazel
+++ b/api/client/BUILD.bazel
@@ -4,17 +4,22 @@ go_library(
    name = "go_default_library",
    srcs = [
        "client.go",
-        "errors.go",
        "options.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/client",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/client",
    visibility = ["//visibility:public"],
-    deps = ["@com_github_pkg_errors//:go_default_library"],
+    deps = [
+        "//api/httputil:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
+    ],
 )

 go_test(
    name = "go_default_test",
    srcs = ["client_test.go"],
    embed = [":go_default_library"],
-    deps = ["//testing/require:go_default_library"],
+    deps = [
+        "//api/httputil:go_default_library",
+        "//testing/require:go_default_library",
+    ],
 )
--- a/api/client/beacon/BUILD.bazel
+++ b/api/client/beacon/BUILD.bazel
@@ -5,13 +5,16 @@ go_library(
    srcs = [
        "client.go",
        "doc.go",
+        "health.go",
        "log.go",
        "template.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/client/beacon",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/client/beacon",
    visibility = ["//visibility:public"],
    deps = [
        "//api/client:go_default_library",
+        "//api/client/beacon/iface:go_default_library",
+        "//api/httputil:go_default_library",
        "//api/server:go_default_library",
        "//api/server/structs:go_default_library",
        "//consensus-types/primitives:go_default_library",
@@ -26,10 +29,15 @@ go_library(

 go_test(
    name = "go_default_test",
-    srcs = ["client_test.go"],
+    srcs = [
+        "client_test.go",
+        "health_test.go",
+    ],
    embed = [":go_default_library"],
    deps = [
-        "//api/client:go_default_library",
+        "//api/client/beacon/testing:go_default_library",
+        "//api/httputil:go_default_library",
        "//testing/require:go_default_library",
+        "@org_uber_go_mock//gomock:go_default_library",
    ],
 )
--- a/api/client/beacon/client.go
+++ b/api/client/beacon/client.go
@@ -12,15 +12,16 @@ import (
 	"sort"
 	"strconv"

-	"github.com/OffchainLabs/prysm/v6/api/client"
-	"github.com/OffchainLabs/prysm/v6/api/server"
-	"github.com/OffchainLabs/prysm/v6/api/server/structs"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	"github.com/OffchainLabs/prysm/v6/network/forks"
-	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/api/client"
+	"github.com/prysmaticlabs/prysm/v5/api/httputil"
+	"github.com/prysmaticlabs/prysm/v5/api/server"
+	"github.com/prysmaticlabs/prysm/v5/api/server/structs"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/network/forks"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/sirupsen/logrus"
 )

@@ -184,7 +185,7 @@ var versionRE = regexp.MustCompile(`^(\w+)/(v\d+\.\d+\.\d+[-a-zA-Z0-9]*)\s*/?(.*
 func parseNodeVersion(v string) (*NodeVersion, error) {
 	groups := versionRE.FindStringSubmatch(v)
 	if len(groups) != 4 {
-		return nil, errors.Wrapf(client.ErrInvalidNodeVersion, "could not be parsed: %s", v)
+		return nil, errors.Wrapf(httputil.ErrInvalidNodeVersion, "could not be parsed: %s", v)
 	}
 	return &NodeVersion{
 		implementation: groups[1],
--- a/api/client/beacon/client_test.go
+++ b/api/client/beacon/client_test.go
@@ -4,8 +4,8 @@ import (
 	"net/url"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/api/client"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/api/httputil"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestParseNodeVersion(t *testing.T) {
@@ -18,17 +18,17 @@ func TestParseNodeVersion(t *testing.T) {
 		{
 			name: "empty string",
 			v:    "",
-			err:  client.ErrInvalidNodeVersion,
+			err:  httputil.ErrInvalidNodeVersion,
 		},
 		{
 			name: "Prysm as the version string",
 			v:    "Prysm",
-			err:  client.ErrInvalidNodeVersion,
+			err:  httputil.ErrInvalidNodeVersion,
 		},
 		{
 			name: "semver only",
 			v:    "v2.0.6",
-			err:  client.ErrInvalidNodeVersion,
+			err:  httputil.ErrInvalidNodeVersion,
 		},
 		{
 			name: "complete version",
@@ -92,7 +92,7 @@ func TestValidHostname(t *testing.T) {
 		{
 			name:    "hostname without port",
 			hostArg: "mydomain.org",
-			err:     client.ErrMalformedHostname,
+			err:     httputil.ErrMalformedHostname,
 		},
 		{
 			name:    "hostname with port",
--- a/api/client/beacon/health/health.go
+++ b/api/client/beacon/health/health.go
@@ -1,18 +1,20 @@
-package health
+package beacon

 import (
 	"context"
 	"sync"
+
+	"github.com/prysmaticlabs/prysm/v5/api/client/beacon/iface"
 )

 type NodeHealthTracker struct {
 	isHealthy  *bool
 	healthChan chan bool
-	node       Node
+	node       iface.HealthNode
 	sync.RWMutex
 }

-func NewTracker(node Node) Tracker {
+func NewNodeHealthTracker(node iface.HealthNode) *NodeHealthTracker {
 	return &NodeHealthTracker{
 		node:       node,
 		healthChan: make(chan bool, 1),
@@ -24,7 +26,7 @@ func (n *NodeHealthTracker) HealthUpdates() <-chan bool {
 	return n.healthChan
 }

-func (n *NodeHealthTracker) IsHealthy(_ context.Context) bool {
+func (n *NodeHealthTracker) IsHealthy() bool {
 	n.RLock()
 	defer n.RUnlock()
 	if n.isHealthy == nil {
--- a/api/client/beacon/health/BUILD.bazel
+++ b/api/client/beacon/health/BUILD.bazel
@@ -1,20 +0,0 @@
-load("@prysm//tools/go:def.bzl", "go_library", "go_test")
-
-go_library(
-    name = "go_default_library",
-    srcs = [
-        "health.go",
-        "interfaces.go",
-        "mock.go",
-    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/client/beacon/health",
-    visibility = ["//visibility:public"],
-    deps = ["@org_uber_go_mock//gomock:go_default_library"],
-)
-
-go_test(
-    name = "go_default_test",
-    srcs = ["health_test.go"],
-    embed = [":go_default_library"],
-    deps = ["@org_uber_go_mock//gomock:go_default_library"],
-)
--- a/api/client/beacon/health/health_test.go
+++ b/api/client/beacon/health/health_test.go
@@ -1,10 +1,11 @@
-package health
+package beacon

 import (
 	"context"
 	"sync"
 	"testing"

+	healthTesting "github.com/prysmaticlabs/prysm/v5/api/client/beacon/testing"
 	"go.uber.org/mock/gomock"
 )

@@ -23,7 +24,7 @@ func TestNodeHealth_IsHealthy(t *testing.T) {
 				isHealthy:  &tt.isHealthy,
 				healthChan: make(chan bool, 1),
 			}
-			if got := n.IsHealthy(context.Background()); got != tt.want {
+			if got := n.IsHealthy(); got != tt.want {
 				t.Errorf("IsHealthy() = %v, want %v", got, tt.want)
 			}
 		})
@@ -46,7 +47,7 @@ func TestNodeHealth_UpdateNodeHealth(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			ctrl := gomock.NewController(t)
 			defer ctrl.Finish()
-			client := NewMockHealthClient(ctrl)
+			client := healthTesting.NewMockHealthClient(ctrl)
 			client.EXPECT().IsHealthy(gomock.Any()).Return(tt.newStatus)
 			n := &NodeHealthTracker{
 				isHealthy:  &tt.initial,
@@ -79,8 +80,8 @@ func TestNodeHealth_UpdateNodeHealth(t *testing.T) {
 func TestNodeHealth_Concurrency(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()
-	client := NewMockHealthClient(ctrl)
-	n := NewTracker(client)
+	client := healthTesting.NewMockHealthClient(ctrl)
+	n := NewNodeHealthTracker(client)
 	var wg sync.WaitGroup

 	// Number of goroutines to spawn for both reading and writing
@@ -103,7 +104,7 @@ func TestNodeHealth_Concurrency(t *testing.T) {
 	for i := 0; i < numGoroutines; i++ {
 		go func() {
 			defer wg.Done()
-			_ = n.IsHealthy(context.Background()) // Just read the value
+			_ = n.IsHealthy() // Just read the value
 		}()
 	}

--- a/api/client/beacon/iface/BUILD.bazel
+++ b/api/client/beacon/iface/BUILD.bazel
@@ -0,0 +1,8 @@
+load("@prysm//tools/go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["health.go"],
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/client/beacon/iface",
+    visibility = ["//visibility:public"],
+)
--- a/api/client/beacon/health/interfaces.go
+++ b/api/client/beacon/health/interfaces.go
@@ -1,13 +1,13 @@
-package health
+package iface

 import "context"

-type Tracker interface {
+type HealthTracker interface {
 	HealthUpdates() <-chan bool
+	IsHealthy() bool
 	CheckHealth(ctx context.Context) bool
-	Node
 }

-type Node interface {
+type HealthNode interface {
 	IsHealthy(ctx context.Context) bool
 }
--- a/api/client/beacon/testing/BUILD.bazel
+++ b/api/client/beacon/testing/BUILD.bazel
@@ -0,0 +1,12 @@
+load("@prysm//tools/go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["mock.go"],
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/client/beacon/testing",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//api/client/beacon/iface:go_default_library",
+        "@org_uber_go_mock//gomock:go_default_library",
+    ],
+)
--- a/api/client/beacon/testing/mock.go
+++ b/api/client/beacon/testing/mock.go
@@ -1,15 +1,16 @@
-package health
+package testing

 import (
 	"context"
 	"reflect"
 	"sync"

+	"github.com/prysmaticlabs/prysm/v5/api/client/beacon/iface"
 	"go.uber.org/mock/gomock"
 )

 var (
-	_ = Node(&MockHealthClient{})
+	_ = iface.HealthNode(&MockHealthClient{})
 )

 // MockHealthClient is a mock of HealthClient interface.
--- a/api/client/builder/BUILD.bazel
+++ b/api/client/builder/BUILD.bazel
@@ -8,11 +8,10 @@ go_library(
        "errors.go",
        "types.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/client/builder",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/client/builder",
    visibility = ["//visibility:public"],
    deps = [
-        "//api:go_default_library",
-        "//api/client:go_default_library",
+        "//api/httputil:go_default_library",
        "//api/server:go_default_library",
        "//api/server/structs:go_default_library",
        "//config/fieldparams:go_default_library",
@@ -47,7 +46,7 @@ go_test(
    data = glob(["testdata/**"]),
    embed = [":go_default_library"],
    deps = [
-        "//api:go_default_library",
+        "//api/httputil:go_default_library",
        "//api/server/structs:go_default_library",
        "//config/fieldparams:go_default_library",
        "//config/params:go_default_library",
--- a/api/client/builder/bid.go
+++ b/api/client/builder/bid.go
@@ -1,14 +1,14 @@
 package builder

 import (
-	consensus_types "github.com/OffchainLabs/prysm/v6/consensus-types"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	v1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/runtime/version"
 	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"
 )

 // SignedBid is an interface describing the method set of a signed builder bid.
--- a/api/client/builder/client.go
+++ b/api/client/builder/client.go
@@ -12,19 +12,18 @@ import (
 	"strings"
 	"text/template"

-	"github.com/OffchainLabs/prysm/v6/api"
-	"github.com/OffchainLabs/prysm/v6/api/client"
-	"github.com/OffchainLabs/prysm/v6/api/server/structs"
-	"github.com/OffchainLabs/prysm/v6/config/params"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/monitoring/tracing"
-	"github.com/OffchainLabs/prysm/v6/monitoring/tracing/trace"
-	v1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/runtime/version"
 	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/api/httputil"
+	"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/interfaces"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
+	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"
 	log "github.com/sirupsen/logrus"
 	"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
 )
@@ -191,7 +190,7 @@ 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(io.LimitReader(r.Body, httputil.MaxBodySize))
 	if err != nil {
 		err = errors.Wrap(err, "error reading http response body from builder server")
 		return
@@ -229,11 +228,11 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash
 	var getOpts reqOption
 	if c.sszEnabled {
 		getOpts = func(r *http.Request) {
-			r.Header.Set("Accept", api.OctetStreamMediaType)
+			r.Header.Set("Accept", httputil.OctetStreamMediaType)
 		}
 	} else {
 		getOpts = func(r *http.Request) {
-			r.Header.Set("Accept", api.JsonMediaType)
+			r.Header.Set("Accept", httputil.JsonMediaType)
 		}
 	}
 	data, header, err := c.do(ctx, http.MethodGet, path, nil, getOpts)
@@ -256,8 +255,8 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash

 func (c *Client) parseHeaderResponse(data []byte, header http.Header) (SignedBid, error) {
 	var versionHeader string
-	if c.sszEnabled || header.Get(api.VersionHeader) != "" {
-		versionHeader = header.Get(api.VersionHeader)
+	if c.sszEnabled || header.Get(httputil.VersionHeader) != "" {
+		versionHeader = header.Get(httputil.VersionHeader)
 	} else {
 		// If we don't have a version header, attempt to parse JSON for version
 		v := &VersionResponse{}
@@ -387,8 +386,8 @@ func (c *Client) RegisterValidator(ctx context.Context, svr []*ethpb.SignedValid
 	)
 	if c.sszEnabled {
 		postOpts = func(r *http.Request) {
-			r.Header.Set("Content-Type", api.OctetStreamMediaType)
-			r.Header.Set("Accept", api.OctetStreamMediaType)
+			r.Header.Set("Content-Type", httputil.OctetStreamMediaType)
+			r.Header.Set("Accept", httputil.OctetStreamMediaType)
 		}
 		body, err = sszValidatorRegisterRequest(svr)
 		if err != nil {
@@ -398,8 +397,8 @@ func (c *Client) RegisterValidator(ctx context.Context, svr []*ethpb.SignedValid
 		}
 	} else {
 		postOpts = func(r *http.Request) {
-			r.Header.Set("Content-Type", api.JsonMediaType)
-			r.Header.Set("Accept", api.JsonMediaType)
+			r.Header.Set("Content-Type", httputil.JsonMediaType)
+			r.Header.Set("Accept", httputil.JsonMediaType)
 		}
 		body, err = jsonValidatorRegisterRequest(svr)
 		if err != nil {
@@ -443,7 +442,7 @@ func sszValidatorRegisterRequest(svr []*ethpb.SignedValidatorRegistrationV1) ([]
 	return ssz, nil
 }

-var errResponseVersionMismatch = errors.New("builder API response uses a different version than requested in " + api.VersionHeader + " header")
+var errResponseVersionMismatch = errors.New("builder API response uses a different version than requested in " + httputil.VersionHeader + " header")

 func getVersionsBlockToPayload(blockVersion int) (int, error) {
 	if blockVersion >= version.Deneb {
@@ -501,7 +500,7 @@ func (c *Client) SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlyS
 func (c *Client) checkBlockVersion(respBytes []byte, header http.Header) (int, error) {
 	var versionHeader string
 	if c.sszEnabled {
-		versionHeader = strings.ToLower(header.Get(api.VersionHeader))
+		versionHeader = strings.ToLower(header.Get(httputil.VersionHeader))
 	} else {
 		// fallback to JSON-based version extraction
 		v := &VersionResponse{}
@@ -531,9 +530,9 @@ func (c *Client) buildBlindedBlockRequest(sb interfaces.ReadOnlySignedBeaconBloc
 			return nil, nil, errors.Wrap(err, "could not marshal SSZ for blinded block")
 		}
 		opt := func(r *http.Request) {
-			r.Header.Set(api.VersionHeader, version.String(sb.Version()))
-			r.Header.Set("Content-Type", api.OctetStreamMediaType)
-			r.Header.Set("Accept", api.OctetStreamMediaType)
+			r.Header.Set(httputil.VersionHeader, version.String(sb.Version()))
+			r.Header.Set("Content-Type", httputil.OctetStreamMediaType)
+			r.Header.Set("Accept", httputil.OctetStreamMediaType)
 		}
 		return body, opt, nil
 	}
@@ -547,9 +546,9 @@ func (c *Client) buildBlindedBlockRequest(sb interfaces.ReadOnlySignedBeaconBloc
 		return nil, nil, errors.Wrap(err, "error marshaling blinded block to JSON")
 	}
 	opt := func(r *http.Request) {
-		r.Header.Set(api.VersionHeader, version.String(sb.Version()))
-		r.Header.Set("Content-Type", api.JsonMediaType)
-		r.Header.Set("Accept", api.JsonMediaType)
+		r.Header.Set(httputil.VersionHeader, version.String(sb.Version()))
+		r.Header.Set("Content-Type", httputil.JsonMediaType)
+		r.Header.Set("Accept", httputil.JsonMediaType)
 	}
 	return body, opt, nil
 }
@@ -642,14 +641,14 @@ func (c *Client) parseBlindedBlockResponseJSON(
 // happy path, and an error with information about the server response body for a non-200 response.
 func (c *Client) Status(ctx context.Context) error {
 	getOpts := func(r *http.Request) {
-		r.Header.Set("Accept", api.JsonMediaType)
+		r.Header.Set("Accept", httputil.JsonMediaType)
 	}
 	_, _, err := c.do(ctx, http.MethodGet, getStatus, nil, getOpts)
 	return err
 }

 func non200Err(response *http.Response) error {
-	bodyBytes, err := io.ReadAll(io.LimitReader(response.Body, client.MaxErrBodySize))
+	bodyBytes, err := io.ReadAll(io.LimitReader(response.Body, httputil.MaxErrBodySize))
 	var errMessage ErrorMessage
 	var body string
 	if err != nil {
--- a/api/client/builder/client_test.go
+++ b/api/client/builder/client_test.go
@@ -10,17 +10,17 @@ import (
 	"net/url"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/api"
-	"github.com/OffchainLabs/prysm/v6/api/server/structs"
-	"github.com/OffchainLabs/prysm/v6/config/params"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	v1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	eth "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
 	"github.com/prysmaticlabs/go-bitfield"
+	"github.com/prysmaticlabs/prysm/v5/api/httputil"
+	"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"
+	"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"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	log "github.com/sirupsen/logrus"
 )

@@ -90,8 +90,8 @@ func TestClient_RegisterValidator(t *testing.T) {
 	t.Run("JSON success", func(t *testing.T) {
 		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"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Accept"))
 				body, err := io.ReadAll(r.Body)
 				defer func() {
 					require.NoError(t, r.Body.Close())
@@ -125,8 +125,8 @@ func TestClient_RegisterValidator(t *testing.T) {
 	t.Run("SSZ success", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Accept"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Accept"))
 				body, err := io.ReadAll(r.Body)
 				defer func() {
 					require.NoError(t, r.Body.Close())
@@ -220,7 +220,7 @@ func TestClient_GetHeader(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, expectedPath, r.URL.Path)
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Accept"))
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Body:       io.NopCloser(bytes.NewBufferString(testExampleHeaderResponse)),
@@ -255,7 +255,7 @@ func TestClient_GetHeader(t *testing.T) {
 	t.Run("bellatrix ssz", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Accept"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Accept"))
 				require.Equal(t, expectedPath, r.URL.Path)
 				epr := &ExecHeaderResponse{}
 				require.NoError(t, json.Unmarshal([]byte(testExampleHeaderResponse), epr))
@@ -264,7 +264,7 @@ func TestClient_GetHeader(t *testing.T) {
 				ssz, err := pro.MarshalSSZ()
 				require.NoError(t, err)
 				header := http.Header{}
-				header.Set(api.VersionHeader, "bellatrix")
+				header.Set(httputil.VersionHeader, "bellatrix")
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Header:     header,
@@ -301,7 +301,7 @@ func TestClient_GetHeader(t *testing.T) {
 	t.Run("capella", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Accept"))
 				require.Equal(t, expectedPath, r.URL.Path)
 				return &http.Response{
 					StatusCode: http.StatusOK,
@@ -333,7 +333,7 @@ func TestClient_GetHeader(t *testing.T) {
 	t.Run("capella ssz", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Accept"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Accept"))
 				require.Equal(t, expectedPath, r.URL.Path)
 				epr := &ExecHeaderResponseCapella{}
 				require.NoError(t, json.Unmarshal([]byte(testExampleHeaderResponseCapella), epr))
@@ -342,7 +342,7 @@ func TestClient_GetHeader(t *testing.T) {
 				ssz, err := pro.MarshalSSZ()
 				require.NoError(t, err)
 				header := http.Header{}
-				header.Set(api.VersionHeader, "capella")
+				header.Set(httputil.VersionHeader, "capella")
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Header:     header,
@@ -375,7 +375,7 @@ func TestClient_GetHeader(t *testing.T) {
 	t.Run("deneb", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Accept"))
 				require.Equal(t, expectedPath, r.URL.Path)
 				return &http.Response{
 					StatusCode: http.StatusOK,
@@ -415,7 +415,7 @@ func TestClient_GetHeader(t *testing.T) {
 	t.Run("deneb ssz", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Accept"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Accept"))
 				require.Equal(t, expectedPath, r.URL.Path)
 				epr := &ExecHeaderResponseDeneb{}
 				require.NoError(t, json.Unmarshal([]byte(testExampleHeaderResponseDeneb), epr))
@@ -424,7 +424,7 @@ func TestClient_GetHeader(t *testing.T) {
 				ssz, err := pro.MarshalSSZ()
 				require.NoError(t, err)
 				header := http.Header{}
-				header.Set(api.VersionHeader, "deneb")
+				header.Set(httputil.VersionHeader, "deneb")
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Header:     header,
@@ -483,7 +483,7 @@ func TestClient_GetHeader(t *testing.T) {
 	t.Run("electra", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Accept"))
 				require.Equal(t, expectedPath, r.URL.Path)
 				return &http.Response{
 					StatusCode: http.StatusOK,
@@ -528,7 +528,7 @@ func TestClient_GetHeader(t *testing.T) {
 	t.Run("electra ssz", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Accept"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Accept"))
 				require.Equal(t, expectedPath, r.URL.Path)
 				epr := &ExecHeaderResponseElectra{}
 				require.NoError(t, json.Unmarshal([]byte(testExampleHeaderResponseElectra), epr))
@@ -537,7 +537,7 @@ func TestClient_GetHeader(t *testing.T) {
 				ssz, err := pro.MarshalSSZ()
 				require.NoError(t, err)
 				header := http.Header{}
-				header.Set(api.VersionHeader, "electra")
+				header.Set(httputil.VersionHeader, "electra")
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Header:     header,
@@ -608,8 +608,8 @@ 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, httputil.JsonMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Accept"))
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Body:       io.NopCloser(bytes.NewBufferString(testExampleExecutionPayload)),
@@ -635,9 +635,9 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
-				require.Equal(t, "bellatrix", r.Header.Get(api.VersionHeader))
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "bellatrix", r.Header.Get(httputil.VersionHeader))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Accept"))
 				epr := &ExecutionPayloadResponse{}
 				require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayload), epr))
 				ep := &ExecutionPayload{}
@@ -647,7 +647,7 @@ func TestSubmitBlindedBlock(t *testing.T) {
 				ssz, err := pro.MarshalSSZ()
 				require.NoError(t, err)
 				header := http.Header{}
-				header.Set(api.VersionHeader, "bellatrix")
+				header.Set(httputil.VersionHeader, "bellatrix")
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Header:     header,
@@ -675,9 +675,9 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
-				require.Equal(t, "capella", r.Header.Get(api.VersionHeader))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "capella", r.Header.Get(httputil.VersionHeader))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Accept"))
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Body:       io.NopCloser(bytes.NewBufferString(testExampleExecutionPayloadCapella)),
@@ -705,9 +705,9 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
-				require.Equal(t, "capella", r.Header.Get(api.VersionHeader))
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "capella", r.Header.Get(httputil.VersionHeader))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Accept"))
 				epr := &ExecutionPayloadResponse{}
 				require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayloadCapella), epr))
 				ep := &ExecutionPayloadCapella{}
@@ -717,7 +717,7 @@ func TestSubmitBlindedBlock(t *testing.T) {
 				ssz, err := pro.MarshalSSZ()
 				require.NoError(t, err)
 				header := http.Header{}
-				header.Set(api.VersionHeader, "capella")
+				header.Set(httputil.VersionHeader, "capella")
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Header:     header,
@@ -748,9 +748,9 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
-				require.Equal(t, "deneb", r.Header.Get(api.VersionHeader))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "deneb", r.Header.Get(httputil.VersionHeader))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Accept"))
 				var req structs.SignedBlindedBeaconBlockDeneb
 				err := json.NewDecoder(r.Body).Decode(&req)
 				require.NoError(t, err)
@@ -788,9 +788,9 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
-				require.Equal(t, "deneb", r.Header.Get(api.VersionHeader))
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "deneb", r.Header.Get(httputil.VersionHeader))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Accept"))
 				epr := &ExecPayloadResponseDeneb{}
 				require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayloadDeneb), epr))
 				pro, blob, err := epr.ToProto()
@@ -802,7 +802,7 @@ func TestSubmitBlindedBlock(t *testing.T) {
 				ssz, err := combined.MarshalSSZ()
 				require.NoError(t, err)
 				header := http.Header{}
-				header.Set(api.VersionHeader, "deneb")
+				header.Set(httputil.VersionHeader, "deneb")
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Header:     header,
@@ -835,9 +835,9 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
-				require.Equal(t, "electra", r.Header.Get(api.VersionHeader))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.JsonMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "electra", r.Header.Get(httputil.VersionHeader))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.JsonMediaType, r.Header.Get("Accept"))
 				var req structs.SignedBlindedBeaconBlockElectra
 				err := json.NewDecoder(r.Body).Decode(&req)
 				require.NoError(t, err)
@@ -875,9 +875,9 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
-				require.Equal(t, "electra", r.Header.Get(api.VersionHeader))
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Content-Type"))
-				require.Equal(t, api.OctetStreamMediaType, r.Header.Get("Accept"))
+				require.Equal(t, "electra", r.Header.Get(httputil.VersionHeader))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Content-Type"))
+				require.Equal(t, httputil.OctetStreamMediaType, r.Header.Get("Accept"))
 				epr := &ExecPayloadResponseDeneb{}
 				require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayloadDeneb), epr))
 				pro, blob, err := epr.ToProto()
@@ -889,7 +889,7 @@ func TestSubmitBlindedBlock(t *testing.T) {
 				ssz, err := combined.MarshalSSZ()
 				require.NoError(t, err)
 				header := http.Header{}
-				header.Set(api.VersionHeader, "electra")
+				header.Set(httputil.VersionHeader, "electra")
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Header:     header,
--- a/api/client/builder/testing/BUILD.bazel
+++ b/api/client/builder/testing/BUILD.bazel
@@ -3,7 +3,7 @@ load("@prysm//tools/go:def.bzl", "go_library")
 go_library(
    name = "go_default_library",
    srcs = ["mock.go"],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/client/builder/testing",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/client/builder/testing",
    visibility = ["//visibility:public"],
    deps = [
        "//api/client/builder:go_default_library",
--- a/api/client/builder/testing/mock.go
+++ b/api/client/builder/testing/mock.go
@@ -3,12 +3,12 @@ package testing
 import (
 	"context"

-	"github.com/OffchainLabs/prysm/v6/api/client/builder"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	v1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/api/client/builder"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	v1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 )

 // MockClient is a mock implementation of BuilderClient.
--- a/api/client/builder/types.go
+++ b/api/client/builder/types.go
@@ -7,19 +7,19 @@ import (
 	"strconv"
 	"strings"

-	"github.com/OffchainLabs/prysm/v6/api/server"
-	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
-	"github.com/OffchainLabs/prysm/v6/config/params"
-	consensusblocks "github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	types "github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	"github.com/OffchainLabs/prysm/v6/math"
-	v1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	eth "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/runtime/version"
 	"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"
+	types "github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/math"
+	v1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"google.golang.org/protobuf/proto"
 )

--- a/api/client/builder/types_test.go
+++ b/api/client/builder/types_test.go
@@ -11,18 +11,18 @@ import (
 	"os"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/api/server/structs"
-	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
-	consensusblocks "github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/math"
-	v1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	eth "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/runtime/version"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/go-bitfield"
+	"github.com/prysmaticlabs/prysm/v5/api/server/structs"
+	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
+	consensusblocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	"github.com/prysmaticlabs/prysm/v5/math"
+	v1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func ezDecode(t *testing.T, s string) []byte {
--- a/api/client/client.go
+++ b/api/client/client.go
@@ -8,12 +8,7 @@ import (
 	"net/url"

 	"github.com/pkg/errors"
-)
-
-const (
-	MaxBodySize      int64 = 1 << 23 // 8MB default, WithMaxBodySize can override
-	MaxBodySizeState int64 = 1 << 29 // 512MB
-	MaxErrBodySize   int64 = 1 << 17 // 128KB
+	"github.com/prysmaticlabs/prysm/v5/api/httputil"
 )

 // Client is a wrapper object around the HTTP client.
@@ -35,7 +30,7 @@ func NewClient(host string, opts ...ClientOpt) (*Client, error) {
 	c := &Client{
 		hc:          &http.Client{},
 		baseURL:     u,
-		maxBodySize: MaxBodySize,
+		maxBodySize: httputil.MaxBodySize,
 	}
 	for _, o := range opts {
 		o(c)
@@ -67,7 +62,7 @@ func urlForHost(h string) (*url.URL, error) {
 	// try to parse as host:port
 	host, port, err := net.SplitHostPort(h)
 	if err != nil {
-		return nil, ErrMalformedHostname
+		return nil, httputil.ErrMalformedHostname
 	}
 	return &url.URL{Host: net.JoinHostPort(host, port), Scheme: "http"}, nil
 }
@@ -95,7 +90,7 @@ func (c *Client) Get(ctx context.Context, path string, opts ...ReqOption) ([]byt
 		err = r.Body.Close()
 	}()
 	if r.StatusCode != http.StatusOK {
-		return nil, Non200Err(r)
+		return nil, httputil.Non200Err(r)
 	}
 	b, err := io.ReadAll(io.LimitReader(r.Body, c.maxBodySize))
 	if err != nil {
--- a/api/client/client_test.go
+++ b/api/client/client_test.go
@@ -4,7 +4,8 @@ import (
 	"net/url"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/api/httputil"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestValidHostname(t *testing.T) {
@@ -18,7 +19,7 @@ func TestValidHostname(t *testing.T) {
 		{
 			name:    "hostname without port",
 			hostArg: "mydomain.org",
-			err:     ErrMalformedHostname,
+			err:     httputil.ErrMalformedHostname,
 		},
 	}
 	for _, c := range cases {
--- a/api/client/event/BUILD.bazel
+++ b/api/client/event/BUILD.bazel
@@ -6,11 +6,10 @@ go_library(
        "event_stream.go",
        "utils.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/client/event",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/client/event",
    visibility = ["//visibility:public"],
    deps = [
-        "//api:go_default_library",
-        "//api/client:go_default_library",
+        "//api/httputil:go_default_library",
        "@com_github_pkg_errors//:go_default_library",
        "@com_github_sirupsen_logrus//:go_default_library",
    ],
--- a/api/client/event/event_stream.go
+++ b/api/client/event/event_stream.go
@@ -7,9 +7,8 @@ import (
 	"net/url"
 	"strings"

-	"github.com/OffchainLabs/prysm/v6/api"
-	"github.com/OffchainLabs/prysm/v6/api/client"
 	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/api/httputil"
 	log "github.com/sirupsen/logrus"
 )

@@ -85,13 +84,13 @@ func (h *EventStream) Subscribe(eventsChannel chan<- *Event) {
 			Data:      []byte(errors.Wrap(err, "failed to create HTTP request").Error()),
 		}
 	}
-	req.Header.Set("Accept", api.EventStreamMediaType)
-	req.Header.Set("Connection", api.KeepAlive)
+	req.Header.Set("Accept", httputil.EventStreamMediaType)
+	req.Header.Set("Connection", httputil.KeepAlive)
 	resp, err := h.httpClient.Do(req)
 	if err != nil {
 		eventsChannel <- &Event{
 			EventType: EventConnectionError,
-			Data:      []byte(errors.Wrap(err, client.ErrConnectionIssue.Error()).Error()),
+			Data:      []byte(errors.Wrap(err, httputil.ErrConnectionIssue.Error()).Error()),
 		}
 		return
 	}
@@ -145,7 +144,7 @@ func (h *EventStream) Subscribe(eventsChannel chan<- *Event) {
 	if err := scanner.Err(); err != nil {
 		eventsChannel <- &Event{
 			EventType: EventConnectionError,
-			Data:      []byte(errors.Wrap(err, errors.Wrap(client.ErrConnectionIssue, "scanner failed").Error()).Error()),
+			Data:      []byte(errors.Wrap(err, errors.Wrap(httputil.ErrConnectionIssue, "scanner failed").Error()).Error()),
 		}
 	}
 }
--- a/api/client/event/event_stream_test.go
+++ b/api/client/event/event_stream_test.go
@@ -8,7 +8,7 @@ import (
 	"testing"
 	"time"

-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	log "github.com/sirupsen/logrus"
 )

--- a/api/client/event/utils_test.go
+++ b/api/client/event/utils_test.go
@@ -5,7 +5,7 @@ import (
 	"bytes"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestScanLinesWithCarriage(t *testing.T) {
--- a/api/client/validator/BUILD.bazel
+++ b/api/client/validator/BUILD.bazel
@@ -3,7 +3,7 @@ load("@prysm//tools/go:def.bzl", "go_library")
 go_library(
    name = "go_default_library",
    srcs = ["client.go"],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/client/validator",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/client/validator",
    visibility = ["//visibility:public"],
    deps = [
        "//api/client:go_default_library",
--- a/api/client/validator/client.go
+++ b/api/client/validator/client.go
@@ -6,9 +6,9 @@ import (
 	"fmt"
 	"strings"

-	"github.com/OffchainLabs/prysm/v6/api/client"
-	"github.com/OffchainLabs/prysm/v6/validator/rpc"
 	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/api/client"
+	"github.com/prysmaticlabs/prysm/v5/validator/rpc"
 )

 const (
--- a/api/grpcutil/BUILD.bazel
+++ b/api/grpcutil/BUILD.bazel
@@ -3,10 +3,10 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
    name = "go_default_library",
    srcs = [
-        "grpcutils.go",
+        "common.go",
        "parameters.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/grpc",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/grpcutil",
    visibility = ["//visibility:public"],
    deps = [
        "@com_github_sirupsen_logrus//:go_default_library",
@@ -17,7 +17,7 @@ go_library(

 go_test(
    name = "go_default_test",
-    srcs = ["grpcutils_test.go"],
+    srcs = ["common_test.go"],
    embed = [":go_default_library"],
    deps = [
        "//testing/assert:go_default_library",
--- a/api/grpcutil/common.go
+++ b/api/grpcutil/common.go
@@ -1,4 +1,4 @@
-package grpc
+package grpcutil

 import (
 	"context"
--- a/api/grpcutil/common_test.go
+++ b/api/grpcutil/common_test.go
@@ -1,11 +1,11 @@
-package grpc
+package grpcutil

 import (
 	"context"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"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/metadata"
 )
--- a/api/grpcutil/parameters.go
+++ b/api/grpcutil/parameters.go
@@ -1,4 +1,4 @@
-package grpc
+package grpcutil

 // CustomErrorMetadataKey is the name of the metadata key storing additional error information.
 // Metadata value is expected to be a byte-encoded JSON object.
--- a/network/httputil/BUILD.bazel
+++ b/network/httputil/BUILD.bazel
@@ -3,24 +3,31 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
    name = "go_default_library",
    srcs = [
+        "common.go",
+        "constants.go",
        "errors.go",
+        "headers.go",
        "reader.go",
        "writer.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/network/httputil",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/httputil",
    visibility = ["//visibility:public"],
    deps = [
-        "//api:go_default_library",
+        "//consensus-types/primitives:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
        "@com_github_sirupsen_logrus//:go_default_library",
    ],
 )

 go_test(
    name = "go_default_test",
-    srcs = ["reader_test.go"],
+    srcs = [
+        "common_test.go",
+        "reader_test.go",
+    ],
    embed = [":go_default_library"],
    deps = [
-        "//api:go_default_library",
+        "//consensus-types/primitives:go_default_library",
        "//testing/assert:go_default_library",
        "//testing/require:go_default_library",
    ],
--- a/api/httputil/common.go
+++ b/api/httputil/common.go
@@ -1,11 +1,11 @@
-package apiutil
+package httputil

 import (
 	"fmt"
 	neturl "net/url"
 	"strconv"

-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 )

 // Uint64ToString is a util function that will convert uints to string
--- a/api/httputil/common_test.go
+++ b/api/httputil/common_test.go
@@ -1,11 +1,11 @@
-package apiutil
+package httputil

 import (
 	"net/url"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 )

 func TestBeaconApiHelpers_TestUint64ToString(t *testing.T) {
--- a/api/httputil/constants.go
+++ b/api/httputil/constants.go
@@ -1,4 +1,4 @@
-package api
+package httputil

 const (
 	WebUrlPrefix        = "/v2/validator/"
@@ -7,3 +7,9 @@ const (
 	SystemLogsPrefix    = "health/logs"
 	AuthTokenFileName   = "auth-token"
 )
+
+const (
+	MaxBodySize      int64 = 1 << 23 // 8MB default, WithMaxBodySize can override
+	MaxBodySizeState int64 = 1 << 29 // 512MB
+	MaxErrBodySize   int64 = 1 << 17 // 128KB
+)
--- a/api/httputil/errors.go
+++ b/api/httputil/errors.go
@@ -1,4 +1,4 @@
-package client
+package httputil

 import (
 	"fmt"
@@ -8,6 +8,14 @@ import (
 	"github.com/pkg/errors"
 )

+func HandleError(w http.ResponseWriter, message string, code int) {
+	errJson := &DefaultJsonError{
+		Message: message,
+		Code:    code,
+	}
+	WriteError(w, errJson)
+}
+
 // ErrMalformedHostname is used to indicate if a host name's format is incorrect.
 var ErrMalformedHostname = errors.New("hostname must include port, separated by one colon, like example.com:3500")

--- a/api/httputil/headers.go
+++ b/api/httputil/headers.go
@@ -1,4 +1,4 @@
-package api
+package httputil

 import "net/http"

--- a/network/httputil/reader.go
+++ b/network/httputil/reader.go
@@ -5,8 +5,6 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
-
-	"github.com/OffchainLabs/prysm/v6/api"
 )

 // match a number with optional decimals
@@ -23,7 +21,7 @@ func RespondWithSsz(req *http.Request) bool {
 	for _, t := range types {
 		values := strings.Split(t, ";")
 		name := values[0]
-		if name != api.JsonMediaType && name != api.OctetStreamMediaType {
+		if name != JsonMediaType && name != OctetStreamMediaType {
 			continue
 		}
 		// no params specified
@@ -49,10 +47,10 @@ func RespondWithSsz(req *http.Request) bool {
 		}
 	}

-	return currentType == api.OctetStreamMediaType
+	return currentType == OctetStreamMediaType
 }

 // IsRequestSsz checks if the request object should be interpreted as ssz
 func IsRequestSsz(req *http.Request) bool {
-	return req.Header.Get("Content-Type") == api.OctetStreamMediaType
+	return req.Header.Get("Content-Type") == OctetStreamMediaType
 }
--- a/network/httputil/reader_test.go
+++ b/network/httputil/reader_test.go
@@ -7,50 +7,49 @@ import (
 	"net/http/httptest"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/api"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestRespondWithSsz(t *testing.T) {
 	t.Run("ssz_requested", func(t *testing.T) {
 		request := httptest.NewRequest(http.MethodGet, "http://foo.example", nil)
-		request.Header["Accept"] = []string{api.OctetStreamMediaType}
+		request.Header["Accept"] = []string{OctetStreamMediaType}
 		result := RespondWithSsz(request)
 		assert.Equal(t, true, result)
 	})

 	t.Run("ssz_content_type_first", func(t *testing.T) {
 		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s,%s", api.OctetStreamMediaType, api.JsonMediaType)}
+		request.Header["Accept"] = []string{fmt.Sprintf("%s,%s", OctetStreamMediaType, JsonMediaType)}
 		result := RespondWithSsz(request)
 		assert.Equal(t, true, result)
 	})

 	t.Run("ssz_content_type_preferred_1", func(t *testing.T) {
 		request := httptest.NewRequest(http.MethodGet, "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s;q=0.9,%s", api.JsonMediaType, api.OctetStreamMediaType)}
+		request.Header["Accept"] = []string{fmt.Sprintf("%s;q=0.9,%s", JsonMediaType, OctetStreamMediaType)}
 		result := RespondWithSsz(request)
 		assert.Equal(t, true, result)
 	})

 	t.Run("ssz_content_type_preferred_2", func(t *testing.T) {
 		request := httptest.NewRequest(http.MethodGet, "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s;q=0.95,%s;q=0.9", api.OctetStreamMediaType, api.JsonMediaType)}
+		request.Header["Accept"] = []string{fmt.Sprintf("%s;q=0.95,%s;q=0.9", OctetStreamMediaType, JsonMediaType)}
 		result := RespondWithSsz(request)
 		assert.Equal(t, true, result)
 	})

 	t.Run("other_content_type_preferred", func(t *testing.T) {
 		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s,%s;q=0.9", api.JsonMediaType, api.OctetStreamMediaType)}
+		request.Header["Accept"] = []string{fmt.Sprintf("%s,%s;q=0.9", JsonMediaType, OctetStreamMediaType)}
 		result := RespondWithSsz(request)
 		assert.Equal(t, false, result)
 	})

 	t.Run("other_params", func(t *testing.T) {
 		request := httptest.NewRequest(http.MethodGet, "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s,%s;q=0.9,otherparam=xyz", api.JsonMediaType, api.OctetStreamMediaType)}
+		request.Header["Accept"] = []string{fmt.Sprintf("%s,%s;q=0.9,otherparam=xyz", JsonMediaType, OctetStreamMediaType)}
 		result := RespondWithSsz(request)
 		assert.Equal(t, false, result)
 	})
@@ -96,7 +95,7 @@ func TestIsRequestSsz(t *testing.T) {
 		_, err := body.WriteString("something")
 		require.NoError(t, err)
 		request := httptest.NewRequest(http.MethodPost, "http://foo.example", &body)
-		request.Header["Content-Type"] = []string{api.OctetStreamMediaType}
+		request.Header["Content-Type"] = []string{OctetStreamMediaType}
 		result := IsRequestSsz(request)
 		assert.Equal(t, true, result)
 	})
@@ -116,7 +115,7 @@ func TestIsRequestSsz(t *testing.T) {

 	t.Run("ssz Post json content type", func(t *testing.T) {
 		request := httptest.NewRequest(http.MethodPost, "http://foo.example", nil)
-		request.Header["Content-Type"] = []string{api.JsonMediaType}
+		request.Header["Content-Type"] = []string{JsonMediaType}
 		result := IsRequestSsz(request)
 		assert.Equal(t, false, result)
 	})
--- a/network/httputil/writer.go
+++ b/network/httputil/writer.go
@@ -8,7 +8,6 @@ import (
 	"net/http"
 	"strconv"

-	"github.com/OffchainLabs/prysm/v6/api"
 	log "github.com/sirupsen/logrus"
 )

@@ -32,7 +31,7 @@ func (e *DefaultJsonError) Error() string {

 // WriteJson writes the response message in JSON format.
 func WriteJson(w http.ResponseWriter, v any) {
-	w.Header().Set("Content-Type", api.JsonMediaType)
+	w.Header().Set("Content-Type", JsonMediaType)
 	w.WriteHeader(http.StatusOK)
 	if err := json.NewEncoder(w).Encode(v); err != nil {
 		log.WithError(err).Error("Could not write response message")
@@ -42,7 +41,7 @@ func WriteJson(w http.ResponseWriter, v any) {
 // WriteSsz writes the response message in ssz format
 func WriteSsz(w http.ResponseWriter, respSsz []byte) {
 	w.Header().Set("Content-Length", strconv.Itoa(len(respSsz)))
-	w.Header().Set("Content-Type", api.OctetStreamMediaType)
+	w.Header().Set("Content-Type", OctetStreamMediaType)
 	if _, err := io.Copy(w, io.NopCloser(bytes.NewReader(respSsz))); err != nil {
 		log.WithError(err).Error("could not write response message")
 	}
@@ -56,7 +55,7 @@ func WriteError(w http.ResponseWriter, errJson HasStatusCode) {
 		return
 	}
 	w.Header().Set("Content-Length", strconv.Itoa(len(j)))
-	w.Header().Set("Content-Type", api.JsonMediaType)
+	w.Header().Set("Content-Type", JsonMediaType)
 	w.WriteHeader(errJson.StatusCode())
 	if _, err := io.Copy(w, io.NopCloser(bytes.NewReader(j))); err != nil {
 		log.WithError(err).Error("Could not write error message")
--- a/api/jwt.go
+++ b/api/jwt.go
@@ -1,9 +1,9 @@
 package api

 import (
-	"github.com/OffchainLabs/prysm/v6/crypto/rand"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/crypto/rand"
 )

 // GenerateRandomHexString generates a random hex string that follows the standards for jwt token
--- a/api/jwt_test.go
+++ b/api/jwt_test.go
@@ -3,7 +3,7 @@ package api
 import (
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestGenerateRandomHexString(t *testing.T) {
--- a/api/pagination/BUILD.bazel
+++ b/api/pagination/BUILD.bazel
@@ -3,7 +3,7 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
    name = "go_default_library",
    srcs = ["pagination.go"],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/pagination",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/pagination",
    visibility = ["//visibility:public"],
    deps = [
        "//config/params:go_default_library",
--- a/api/pagination/pagination.go
+++ b/api/pagination/pagination.go
@@ -5,8 +5,8 @@ import (
 	"fmt"
 	"strconv"

-	"github.com/OffchainLabs/prysm/v6/config/params"
 	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
 )

 // StartAndEndPage takes in the requested page token, wanted page size, total page size.
--- a/api/pagination/pagination_test.go
+++ b/api/pagination/pagination_test.go
@@ -3,9 +3,9 @@ package pagination_test
 import (
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/api/pagination"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/api/pagination"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestStartAndEndPage(t *testing.T) {
--- a/api/server/BUILD.bazel
+++ b/api/server/BUILD.bazel
@@ -3,7 +3,7 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
    name = "go_default_library",
    srcs = ["error.go"],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/server",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/server",
    visibility = ["//visibility:public"],
 )

--- a/api/server/error_test.go
+++ b/api/server/error_test.go
@@ -4,7 +4,7 @@ import (
 	"errors"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 )

 func TestDecodeError(t *testing.T) {
--- a/api/server/httprest/BUILD.bazel
+++ b/api/server/httprest/BUILD.bazel
@@ -7,7 +7,7 @@ go_library(
        "options.go",
        "server.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/server/httprest",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/server/httprest",
    visibility = ["//visibility:public"],
    deps = [
        "//api/server/middleware:go_default_library",
--- a/api/server/httprest/options.go
+++ b/api/server/httprest/options.go
@@ -5,7 +5,7 @@ import (

 	"net/http"

-	"github.com/OffchainLabs/prysm/v6/api/server/middleware"
+	"github.com/prysmaticlabs/prysm/v5/api/server/middleware"
 )

 // Option is a http rest server functional parameter type.
--- a/api/server/httprest/server.go
+++ b/api/server/httprest/server.go
@@ -5,9 +5,9 @@ import (
 	"net/http"
 	"time"

-	"github.com/OffchainLabs/prysm/v6/api/server/middleware"
-	"github.com/OffchainLabs/prysm/v6/runtime"
 	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/api/server/middleware"
+	"github.com/prysmaticlabs/prysm/v5/runtime"
 )

 var _ runtime.Service = (*Server)(nil)
--- a/api/server/httprest/server_test.go
+++ b/api/server/httprest/server_test.go
@@ -10,9 +10,9 @@ import (
 	"net/url"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/cmd/beacon-chain/flags"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"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"
 )
--- a/api/server/middleware/BUILD.bazel
+++ b/api/server/middleware/BUILD.bazel
@@ -6,7 +6,7 @@ go_library(
        "middleware.go",
        "util.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/server/middleware",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/server/middleware",
    visibility = ["//visibility:public"],
    deps = ["@com_github_rs_cors//:go_default_library"],
 )
@@ -19,7 +19,7 @@ go_test(
    ],
    embed = [":go_default_library"],
    deps = [
-        "//api:go_default_library",
+        "//api/httputil:go_default_library",
        "//testing/assert:go_default_library",
        "//testing/require:go_default_library",
    ],
--- a/api/server/middleware/middleware_test.go
+++ b/api/server/middleware/middleware_test.go
@@ -5,8 +5,8 @@ import (
 	"net/http/httptest"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/api"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/api/httputil"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestNormalizeQueryValuesHandler(t *testing.T) {
@@ -55,7 +55,7 @@ func TestNormalizeQueryValuesHandler(t *testing.T) {
 }

 func TestContentTypeHandler(t *testing.T) {
-	acceptedMediaTypes := []string{api.JsonMediaType, api.OctetStreamMediaType}
+	acceptedMediaTypes := []string{httputil.JsonMediaType, httputil.OctetStreamMediaType}

 	nextHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		_, err := w.Write([]byte("next handler"))
@@ -72,12 +72,12 @@ func TestContentTypeHandler(t *testing.T) {
 	}{
 		{
 			name:               "Accepted Content-Type - application/json",
-			contentType:        api.JsonMediaType,
+			contentType:        httputil.JsonMediaType,
 			expectedStatusCode: http.StatusOK,
 		},
 		{
 			name:               "Accepted Content-Type - ssz format",
-			contentType:        api.OctetStreamMediaType,
+			contentType:        httputil.OctetStreamMediaType,
 			expectedStatusCode: http.StatusOK,
 		},
 		{
--- a/api/server/middleware/util_test.go
+++ b/api/server/middleware/util_test.go
@@ -3,8 +3,8 @@ package middleware
 import (
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestNormalizeQueryValues(t *testing.T) {
--- a/api/server/structs/BUILD.bazel
+++ b/api/server/structs/BUILD.bazel
@@ -24,7 +24,7 @@ go_library(
        "other.go",
        "state.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/server/structs",
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/server/structs",
    visibility = ["//visibility:public"],
    deps = [
        "//api/server:go_default_library",
@@ -57,7 +57,6 @@ go_test(
    deps = [
        "//proto/engine/v1:go_default_library",
        "//proto/prysm/v1alpha1:go_default_library",
-        "//testing/assert: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",
--- a/api/server/structs/conversions.go
+++ b/api/server/structs/conversions.go
@@ -4,20 +4,20 @@ import (
 	"fmt"
 	"strconv"

-	"github.com/OffchainLabs/prysm/v6/api/server"
-	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
-	"github.com/OffchainLabs/prysm/v6/config/params"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/validator"
-	"github.com/OffchainLabs/prysm/v6/container/slice"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	"github.com/OffchainLabs/prysm/v6/math"
-	enginev1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	ethv1 "github.com/OffchainLabs/prysm/v6/proto/eth/v1"
-	eth "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
 	"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"
+	"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"
 )

 var errNilValue = errors.New("nil value")
--- a/api/server/structs/conversions_blob.go
+++ b/api/server/structs/conversions_blob.go
@@ -3,9 +3,9 @@ package structs
 import (
 	"strconv"

-	"github.com/OffchainLabs/prysm/v6/api/server"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	eth "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
+	"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) {
--- a/api/server/structs/conversions_block.go
+++ b/api/server/structs/conversions_block.go
@@ -4,17 +4,17 @@ import (
 	"fmt"
 	"strconv"

-	"github.com/OffchainLabs/prysm/v6/api/server"
-	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/container/slice"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	enginev1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	eth "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
 	"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/consensus-types/interfaces"
+	"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"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 )

 var ErrUnsupportedConversion = errors.New("Could not determine api struct type to use for value")
--- a/api/server/structs/conversions_block_execution.go
+++ b/api/server/structs/conversions_block_execution.go
@@ -4,15 +4,15 @@ import (
 	"fmt"
 	"strconv"

-	"github.com/OffchainLabs/prysm/v6/api/server"
-	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
-	"github.com/OffchainLabs/prysm/v6/config/params"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/container/slice"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	enginev1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
 	"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"
 )

 // ----------------------------------------------------------------------------
--- a/api/server/structs/conversions_block_execution_test.go
+++ b/api/server/structs/conversions_block_execution_test.go
@@ -4,10 +4,10 @@ import (
 	"fmt"
 	"testing"

-	enginev1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
 	"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 {
--- a/api/server/structs/conversions_lightclient.go
+++ b/api/server/structs/conversions_lightclient.go
@@ -4,11 +4,11 @@ import (
 	"encoding/json"
 	"fmt"

-	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
-	enginev1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	"github.com/OffchainLabs/prysm/v6/runtime/version"
 	"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) {
--- a/api/server/structs/conversions_state.go
+++ b/api/server/structs/conversions_state.go
@@ -4,9 +4,9 @@ import (
 	"errors"
 	"fmt"

-	beaconState "github.com/OffchainLabs/prysm/v6/beacon-chain/state"
-	enginev1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
 	"github.com/ethereum/go-ethereum/common/hexutil"
+	beaconState "github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 )

 var errPayloadHeaderNotFound = errors.New("expected payload header not found")
@@ -26,7 +26,10 @@ func BeaconStateFromConsensus(st beaconState.BeaconState) (*BeaconState, error)
 	for i, r := range srcSr {
 		sr[i] = hexutil.Encode(r)
 	}
-	srcHr := st.HistoricalRoots()
+	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)
@@ -113,7 +116,10 @@ func BeaconStateAltairFromConsensus(st beaconState.BeaconState) (*BeaconStateAlt
 	for i, r := range srcSr {
 		sr[i] = hexutil.Encode(r)
 	}
-	srcHr := st.HistoricalRoots()
+	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)
@@ -219,7 +225,10 @@ func BeaconStateBellatrixFromConsensus(st beaconState.BeaconState) (*BeaconState
 	for i, r := range srcSr {
 		sr[i] = hexutil.Encode(r)
 	}
-	srcHr := st.HistoricalRoots()
+	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)
@@ -338,7 +347,10 @@ func BeaconStateCapellaFromConsensus(st beaconState.BeaconState) (*BeaconStateCa
 	for i, r := range srcSr {
 		sr[i] = hexutil.Encode(r)
 	}
-	srcHr := st.HistoricalRoots()
+	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)
@@ -476,7 +488,10 @@ func BeaconStateDenebFromConsensus(st beaconState.BeaconState) (*BeaconStateDene
 	for i, r := range srcSr {
 		sr[i] = hexutil.Encode(r)
 	}
-	srcHr := st.HistoricalRoots()
+	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)
@@ -614,7 +629,10 @@ func BeaconStateElectraFromConsensus(st beaconState.BeaconState) (*BeaconStateEl
 	for i, r := range srcSr {
 		sr[i] = hexutil.Encode(r)
 	}
-	srcHr := st.HistoricalRoots()
+	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)
@@ -797,7 +815,10 @@ func BeaconStateFuluFromConsensus(st beaconState.BeaconState) (*BeaconStateFulu,
 	for i, r := range srcSr {
 		sr[i] = hexutil.Encode(r)
 	}
-	srcHr := st.HistoricalRoots()
+	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)
--- a/api/server/structs/conversions_test.go
+++ b/api/server/structs/conversions_test.go
@@ -3,10 +3,8 @@ package structs
 import (
 	"testing"

-	eth "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
-	"github.com/ethereum/go-ethereum/common/hexutil"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestDepositSnapshotFromConsensus(t *testing.T) {
@@ -104,266 +102,12 @@ func TestProposerSlashing_ToConsensus(t *testing.T) {
 	require.ErrorContains(t, errNilValue.Error(), err)
 }

-func TestProposerSlashing_FromConsensus(t *testing.T) {
-	input := []*eth.ProposerSlashing{
-		{
-			Header_1: &eth.SignedBeaconBlockHeader{
-				Header: &eth.BeaconBlockHeader{
-					Slot:          1,
-					ProposerIndex: 2,
-					ParentRoot:    []byte{3},
-					StateRoot:     []byte{4},
-					BodyRoot:      []byte{5},
-				},
-				Signature: []byte{6},
-			},
-			Header_2: &eth.SignedBeaconBlockHeader{
-				Header: &eth.BeaconBlockHeader{
-					Slot:          7,
-					ProposerIndex: 8,
-					ParentRoot:    []byte{9},
-					StateRoot:     []byte{10},
-					BodyRoot:      []byte{11},
-				},
-				Signature: []byte{12},
-			},
-		},
-		{
-			Header_1: &eth.SignedBeaconBlockHeader{
-				Header: &eth.BeaconBlockHeader{
-					Slot:          13,
-					ProposerIndex: 14,
-					ParentRoot:    []byte{15},
-					StateRoot:     []byte{16},
-					BodyRoot:      []byte{17},
-				},
-				Signature: []byte{18},
-			},
-			Header_2: &eth.SignedBeaconBlockHeader{
-				Header: &eth.BeaconBlockHeader{
-					Slot:          19,
-					ProposerIndex: 20,
-					ParentRoot:    []byte{21},
-					StateRoot:     []byte{22},
-					BodyRoot:      []byte{23},
-				},
-				Signature: []byte{24},
-			},
-		},
-	}
-
-	expectedResult := []*ProposerSlashing{
-		{
-			SignedHeader1: &SignedBeaconBlockHeader{
-				Message: &BeaconBlockHeader{
-					Slot:          "1",
-					ProposerIndex: "2",
-					ParentRoot:    hexutil.Encode([]byte{3}),
-					StateRoot:     hexutil.Encode([]byte{4}),
-					BodyRoot:      hexutil.Encode([]byte{5}),
-				},
-				Signature: hexutil.Encode([]byte{6}),
-			},
-			SignedHeader2: &SignedBeaconBlockHeader{
-				Message: &BeaconBlockHeader{
-					Slot:          "7",
-					ProposerIndex: "8",
-					ParentRoot:    hexutil.Encode([]byte{9}),
-					StateRoot:     hexutil.Encode([]byte{10}),
-					BodyRoot:      hexutil.Encode([]byte{11}),
-				},
-				Signature: hexutil.Encode([]byte{12}),
-			},
-		},
-		{
-			SignedHeader1: &SignedBeaconBlockHeader{
-				Message: &BeaconBlockHeader{
-					Slot:          "13",
-					ProposerIndex: "14",
-					ParentRoot:    hexutil.Encode([]byte{15}),
-					StateRoot:     hexutil.Encode([]byte{16}),
-					BodyRoot:      hexutil.Encode([]byte{17}),
-				},
-				Signature: hexutil.Encode([]byte{18}),
-			},
-			SignedHeader2: &SignedBeaconBlockHeader{
-				Message: &BeaconBlockHeader{
-					Slot:          "19",
-					ProposerIndex: "20",
-					ParentRoot:    hexutil.Encode([]byte{21}),
-					StateRoot:     hexutil.Encode([]byte{22}),
-					BodyRoot:      hexutil.Encode([]byte{23}),
-				},
-				Signature: hexutil.Encode([]byte{24}),
-			},
-		},
-	}
-
-	result := ProposerSlashingsFromConsensus(input)
-	assert.DeepEqual(t, expectedResult, result)
-}
-
 func TestAttesterSlashing_ToConsensus(t *testing.T) {
 	a := &AttesterSlashing{Attestation1: nil, Attestation2: nil}
 	_, err := a.ToConsensus()
 	require.ErrorContains(t, errNilValue.Error(), err)
 }

-func TestAttesterSlashing_FromConsensus(t *testing.T) {
-	input := []*eth.AttesterSlashing{
-		{
-			Attestation_1: &eth.IndexedAttestation{
-				AttestingIndices: []uint64{1, 2},
-				Data: &eth.AttestationData{
-					Slot:            3,
-					CommitteeIndex:  4,
-					BeaconBlockRoot: []byte{5},
-					Source: &eth.Checkpoint{
-						Epoch: 6,
-						Root:  []byte{7},
-					},
-					Target: &eth.Checkpoint{
-						Epoch: 8,
-						Root:  []byte{9},
-					},
-				},
-				Signature: []byte{10},
-			},
-			Attestation_2: &eth.IndexedAttestation{
-				AttestingIndices: []uint64{11, 12},
-				Data: &eth.AttestationData{
-					Slot:            13,
-					CommitteeIndex:  14,
-					BeaconBlockRoot: []byte{15},
-					Source: &eth.Checkpoint{
-						Epoch: 16,
-						Root:  []byte{17},
-					},
-					Target: &eth.Checkpoint{
-						Epoch: 18,
-						Root:  []byte{19},
-					},
-				},
-				Signature: []byte{20},
-			},
-		},
-		{
-			Attestation_1: &eth.IndexedAttestation{
-				AttestingIndices: []uint64{21, 22},
-				Data: &eth.AttestationData{
-					Slot:            23,
-					CommitteeIndex:  24,
-					BeaconBlockRoot: []byte{25},
-					Source: &eth.Checkpoint{
-						Epoch: 26,
-						Root:  []byte{27},
-					},
-					Target: &eth.Checkpoint{
-						Epoch: 28,
-						Root:  []byte{29},
-					},
-				},
-				Signature: []byte{30},
-			},
-			Attestation_2: &eth.IndexedAttestation{
-				AttestingIndices: []uint64{31, 32},
-				Data: &eth.AttestationData{
-					Slot:            33,
-					CommitteeIndex:  34,
-					BeaconBlockRoot: []byte{35},
-					Source: &eth.Checkpoint{
-						Epoch: 36,
-						Root:  []byte{37},
-					},
-					Target: &eth.Checkpoint{
-						Epoch: 38,
-						Root:  []byte{39},
-					},
-				},
-				Signature: []byte{40},
-			},
-		},
-	}
-
-	expectedResult := []*AttesterSlashing{
-		{
-			Attestation1: &IndexedAttestation{
-				AttestingIndices: []string{"1", "2"},
-				Data: &AttestationData{
-					Slot:            "3",
-					CommitteeIndex:  "4",
-					BeaconBlockRoot: hexutil.Encode([]byte{5}),
-					Source: &Checkpoint{
-						Epoch: "6",
-						Root:  hexutil.Encode([]byte{7}),
-					},
-					Target: &Checkpoint{
-						Epoch: "8",
-						Root:  hexutil.Encode([]byte{9}),
-					},
-				},
-				Signature: hexutil.Encode([]byte{10}),
-			},
-			Attestation2: &IndexedAttestation{
-				AttestingIndices: []string{"11", "12"},
-				Data: &AttestationData{
-					Slot:            "13",
-					CommitteeIndex:  "14",
-					BeaconBlockRoot: hexutil.Encode([]byte{15}),
-					Source: &Checkpoint{
-						Epoch: "16",
-						Root:  hexutil.Encode([]byte{17}),
-					},
-					Target: &Checkpoint{
-						Epoch: "18",
-						Root:  hexutil.Encode([]byte{19}),
-					},
-				},
-				Signature: hexutil.Encode([]byte{20}),
-			},
-		},
-		{
-			Attestation1: &IndexedAttestation{
-				AttestingIndices: []string{"21", "22"},
-				Data: &AttestationData{
-					Slot:            "23",
-					CommitteeIndex:  "24",
-					BeaconBlockRoot: hexutil.Encode([]byte{25}),
-					Source: &Checkpoint{
-						Epoch: "26",
-						Root:  hexutil.Encode([]byte{27}),
-					},
-					Target: &Checkpoint{
-						Epoch: "28",
-						Root:  hexutil.Encode([]byte{29}),
-					},
-				},
-				Signature: hexutil.Encode([]byte{30}),
-			},
-			Attestation2: &IndexedAttestation{
-				AttestingIndices: []string{"31", "32"},
-				Data: &AttestationData{
-					Slot:            "33",
-					CommitteeIndex:  "34",
-					BeaconBlockRoot: hexutil.Encode([]byte{35}),
-					Source: &Checkpoint{
-						Epoch: "36",
-						Root:  hexutil.Encode([]byte{37}),
-					},
-					Target: &Checkpoint{
-						Epoch: "38",
-						Root:  hexutil.Encode([]byte{39}),
-					},
-				},
-				Signature: hexutil.Encode([]byte{40}),
-			},
-		},
-	}
-
-	result := AttesterSlashingsFromConsensus(input)
-	assert.DeepEqual(t, expectedResult, result)
-}
-
 func TestIndexedAttestation_ToConsensus(t *testing.T) {
 	a := &IndexedAttestation{
 		AttestingIndices: []string{"1"},
--- a/api/server/structs/endpoints_beacon.go
+++ b/api/server/structs/endpoints_beacon.go
@@ -263,13 +263,6 @@ type ChainHead struct {
 	OptimisticStatus           bool   `json:"optimistic_status"`
 }

-type GetPendingConsolidationsResponse struct {
-	Version             string                  `json:"version"`
-	ExecutionOptimistic bool                    `json:"execution_optimistic"`
-	Finalized           bool                    `json:"finalized"`
-	Data                []*PendingConsolidation `json:"data"`
-}
-
 type GetPendingDepositsResponse struct {
 	Version             string            `json:"version"`
 	ExecutionOptimistic bool              `json:"execution_optimistic"`
--- a/api/server/structs/endpoints_validator.go
+++ b/api/server/structs/endpoints_validator.go
@@ -3,7 +3,7 @@ package structs
 import (
 	"encoding/json"

-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 )

 type AggregateAttestationResponse struct {
--- a/api/server/structs/other.go
+++ b/api/server/structs/other.go
@@ -253,7 +253,7 @@ type PendingDeposit struct {
 }

 type PendingPartialWithdrawal struct {
-	Index             string `json:"validator_index"`
+	Index             string `json:"index"`
 	Amount            string `json:"amount"`
 	WithdrawableEpoch string `json:"withdrawable_epoch"`
 }
--- a/async/BUILD.bazel
+++ b/async/BUILD.bazel
@@ -8,7 +8,7 @@ go_library(
        "multilock.go",
        "scatter.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/async",
+    importpath = "github.com/prysmaticlabs/prysm/v5/async",
    visibility = ["//visibility:public"],
    deps = ["@com_github_sirupsen_logrus//:go_default_library"],
 )
--- a/async/abool/BUILD.bazel
+++ b/async/abool/BUILD.bazel
@@ -3,7 +3,7 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
    name = "go_default_library",
    srcs = ["abool.go"],
-    importpath = "github.com/OffchainLabs/prysm/v6/async/abool",
+    importpath = "github.com/prysmaticlabs/prysm/v5/async/abool",
    visibility = ["//visibility:public"],
 )

--- a/async/benchmark_test.go
+++ b/async/benchmark_test.go
@@ -6,8 +6,8 @@ import (
 	"sync"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/async"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/async"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	log "github.com/sirupsen/logrus"
 )

--- a/async/debounce_test.go
+++ b/async/debounce_test.go
@@ -7,10 +7,10 @@ import (
 	"testing"
 	"time"

-	"github.com/OffchainLabs/prysm/v6/async"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
-	"github.com/OffchainLabs/prysm/v6/testing/util"
+	"github.com/prysmaticlabs/prysm/v5/async"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
 )

 func TestDebounce_NoEvents(t *testing.T) {
--- a/async/event/BUILD.bazel
+++ b/async/event/BUILD.bazel
@@ -7,7 +7,7 @@ go_library(
        "interface.go",
        "subscription.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/async/event",
+    importpath = "github.com/prysmaticlabs/prysm/v5/async/event",
    visibility = ["//visibility:public"],
    deps = [
        "//time/mclock:go_default_library",
--- a/async/event/example_scope_test.go
+++ b/async/event/example_scope_test.go
@@ -20,7 +20,7 @@ import (
 	"fmt"
 	"sync"

-	"github.com/OffchainLabs/prysm/v6/async/event"
+	"github.com/prysmaticlabs/prysm/v5/async/event"
 )

 // This example demonstrates how SubscriptionScope can be used to control the lifetime of
--- a/async/event/example_subscription_test.go
+++ b/async/event/example_subscription_test.go
@@ -19,7 +19,7 @@ package event_test
 import (
 	"fmt"

-	"github.com/OffchainLabs/prysm/v6/async/event"
+	"github.com/prysmaticlabs/prysm/v5/async/event"
 )

 func ExampleNewSubscription() {
--- a/async/event/subscription.go
+++ b/async/event/subscription.go
@@ -21,7 +21,7 @@ import (
 	"sync"
 	"time"

-	"github.com/OffchainLabs/prysm/v6/time/mclock"
+	"github.com/prysmaticlabs/prysm/v5/time/mclock"
 )

 // waitQuotient is divided against the max backoff time, in order to have N requests based on the full
--- a/async/event/subscription_test.go
+++ b/async/event/subscription_test.go
@@ -23,7 +23,7 @@ import (
 	"testing"
 	"time"

-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 var errInts = errors.New("error in subscribeInts")
--- a/async/every_test.go
+++ b/async/every_test.go
@@ -6,7 +6,7 @@ import (
 	"testing"
 	"time"

-	"github.com/OffchainLabs/prysm/v6/async"
+	"github.com/prysmaticlabs/prysm/v5/async"
 )

 func TestEveryRuns(t *testing.T) {
--- a/async/scatter_test.go
+++ b/async/scatter_test.go
@@ -5,9 +5,9 @@ import (
 	"sync"
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/async"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/async"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestDouble(t *testing.T) {
--- a/beacon-chain/blockchain/BUILD.bazel
+++ b/beacon-chain/blockchain/BUILD.bazel
@@ -30,7 +30,7 @@ go_library(
        "tracked_proposer.go",
        "weak_subjectivity_checks.go",
    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/beacon-chain/blockchain",
+    importpath = "github.com/prysmaticlabs/prysm/v5/beacon-chain/blockchain",
    visibility = [
        "//beacon-chain:__subpackages__",
        "//cmd/beacon-chain:__subpackages__",
@@ -70,7 +70,6 @@ go_library(
        "//beacon-chain/startup:go_default_library",
        "//beacon-chain/state:go_default_library",
        "//beacon-chain/state/stategen:go_default_library",
-        "//beacon-chain/verification:go_default_library",
        "//config/features:go_default_library",
        "//config/fieldparams:go_default_library",
        "//config/params:go_default_library",
@@ -163,12 +162,10 @@ 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/state/stategen:go_default_library",
-        "//beacon-chain/verification:go_default_library",
        "//config/features:go_default_library",
        "//config/fieldparams:go_default_library",
        "//config/params:go_default_library",
--- a/beacon-chain/blockchain/chain_info.go
+++ b/beacon-chain/blockchain/chain_info.go
@@ -5,21 +5,21 @@ import (
 	"context"
 	"time"

-	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/helpers"
-	f "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice"
-	doublylinkedtree "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/doubly-linked-tree"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/state"
-	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
-	"github.com/OffchainLabs/prysm/v6/config/params"
-	consensus_blocks "github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/forkchoice"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	"github.com/OffchainLabs/prysm/v6/monitoring/tracing/trace"
-	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/time/slots"
 	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	f "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice"
+	doublylinkedtree "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/doubly-linked-tree"
+	"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"
+	"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/time/slots"
 )

 // ChainInfoFetcher defines a common interface for methods in blockchain service which
@@ -51,7 +51,6 @@ type ForkchoiceFetcher interface {
 	ProposerBoost() [32]byte
 	RecentBlockSlot(root [32]byte) (primitives.Slot, error)
 	IsCanonical(ctx context.Context, blockRoot [32]byte) (bool, error)
-	DependentRoot(primitives.Epoch) ([32]byte, error)
 }

 // TimeFetcher retrieves the Ethereum consensus data that's related to time.
--- a/beacon-chain/blockchain/chain_info_forkchoice.go
+++ b/beacon-chain/blockchain/chain_info_forkchoice.go
@@ -3,13 +3,13 @@ package blockchain
 import (
 	"context"

-	"github.com/OffchainLabs/prysm/v6/beacon-chain/state"
-	consensus_blocks "github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/forkchoice"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	"github.com/OffchainLabs/prysm/v6/runtime/version"
 	"github.com/pkg/errors"
+	"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"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 )

 // CachedHeadRoot returns the corresponding value from Forkchoice
@@ -126,10 +126,3 @@ func (s *Service) hashForGenesisBlock(ctx context.Context, root [32]byte) ([]byt
 	}
 	return bytesutil.SafeCopyBytes(header.BlockHash()), nil
 }
-
-// DependentRoot wraps the corresponding method in forkchoice
-func (s *Service) DependentRoot(epoch primitives.Epoch) ([32]byte, error) {
-	s.cfg.ForkChoiceStore.RLock()
-	defer s.cfg.ForkChoiceStore.RUnlock()
-	return s.cfg.ForkChoiceStore.DependentRoot(epoch)
-}
--- a/beacon-chain/blockchain/chain_info_norace_test.go
+++ b/beacon-chain/blockchain/chain_info_norace_test.go
@@ -4,14 +4,14 @@ import (
 	"context"
 	"testing"

-	testDB "github.com/OffchainLabs/prysm/v6/beacon-chain/db/testing"
-	doublylinkedtree "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/doubly-linked-tree"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/state/stategen"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
-	"github.com/OffchainLabs/prysm/v6/testing/util"
+	testDB "github.com/prysmaticlabs/prysm/v5/beacon-chain/db/testing"
+	doublylinkedtree "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/doubly-linked-tree"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state/stategen"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
 )

 func TestHeadSlot_DataRace(t *testing.T) {
--- a/beacon-chain/blockchain/chain_info_test.go
+++ b/beacon-chain/blockchain/chain_info_test.go
@@ -5,21 +5,21 @@ import (
 	"testing"
 	"time"

-	testDB "github.com/OffchainLabs/prysm/v6/beacon-chain/db/testing"
-	doublylinkedtree "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/doubly-linked-tree"
-	forkchoicetypes "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/types"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/state"
-	state_native "github.com/OffchainLabs/prysm/v6/beacon-chain/state/state-native"
-	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
-	"github.com/OffchainLabs/prysm/v6/config/params"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	enginev1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
-	"github.com/OffchainLabs/prysm/v6/testing/util"
+	testDB "github.com/prysmaticlabs/prysm/v5/beacon-chain/db/testing"
+	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"
+	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
 	"google.golang.org/protobuf/proto"
 )

--- a/beacon-chain/blockchain/defragment.go
+++ b/beacon-chain/blockchain/defragment.go
@@ -1,11 +1,11 @@
 package blockchain

 import (
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v6/config/features"
-	"github.com/OffchainLabs/prysm/v6/time"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/config/features"
+	"github.com/prysmaticlabs/prysm/v5/time"
 )

 var stateDefragmentationTime = promauto.NewSummary(prometheus.SummaryOpts{
--- a/beacon-chain/blockchain/error.go
+++ b/beacon-chain/blockchain/error.go
@@ -1,14 +1,8 @@
 package blockchain

-import (
-	stderrors "errors"
-
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/verification"
-	"github.com/pkg/errors"
-)
+import "github.com/pkg/errors"

 var (
-	// ErrInvalid indicates a verification failure that should result in peer downscoring.
 	// ErrInvalidPayload is returned when the payload is invalid
 	ErrInvalidPayload = invalidBlock{error: errors.New("received an INVALID payload from execution engine")}
 	// ErrInvalidBlockHashPayloadStatus is returned when the payload has invalid block hash.
@@ -39,10 +33,10 @@ var (
 	// errNotGenesisRoot is returned when the root is not the genesis block root.
 	errNotGenesisRoot = errors.New("root is not the genesis block root")
 	// errBlacklistedBlock is returned when a block is blacklisted as invalid.
-	errBlacklistedRoot = verification.AsVerificationFailure(errors.New("block root is blacklisted"))
+	errBlacklistedRoot = errors.New("block root is blacklisted")
 )

-var errMaxBlobsExceeded = verification.AsVerificationFailure(errors.New("Expected commitments in block exceeds MAX_BLOBS_PER_BLOCK"))
+var errMaxBlobsExceeded = errors.New("Expected commitments in block exceeds MAX_BLOBS_PER_BLOCK")

 // 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.
@@ -88,15 +82,6 @@ func IsInvalidBlock(e error) bool {
 	return errors.As(e, &d)
 }

-// Unwrap ensures that any error using invalidBlock passes an errors.Is check for
-// verification.ErrInvalid.
-func (e invalidBlock) Unwrap() error {
-	if !errors.Is(e.error, verification.ErrInvalid) {
-		return stderrors.Join(e.error, verification.ErrInvalid)
-	}
-	return e.error
-}
-
 // InvalidBlockLVH returns the invalid block last valid hash root. If the error
 // doesn't have a last valid hash, [32]byte{} is returned.
 func InvalidBlockLVH(e error) [32]byte {
--- a/beacon-chain/blockchain/error_test.go
+++ b/beacon-chain/blockchain/error_test.go
@@ -3,9 +3,8 @@ package blockchain
 import (
 	"testing"

-	"github.com/OffchainLabs/prysm/v6/beacon-chain/verification"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
 	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )

 func TestIsInvalidBlock(t *testing.T) {
@@ -43,8 +42,3 @@ func TestInvalidRoots(t *testing.T) {
 	require.Equal(t, [32]byte{'a'}, InvalidBlockRoot(newErr))
 	require.DeepEqual(t, roots, InvalidAncestorRoots(newErr))
 }
-
-func TestInvalidRecognition(t *testing.T) {
-	err := invalidBlock{error: errors.New("test"), root: [32]byte{}}
-	require.Equal(t, true, errors.Is(err, verification.ErrInvalid))
-}
--- a/beacon-chain/blockchain/execution_engine.go
+++ b/beacon-chain/blockchain/execution_engine.go
@@ -4,29 +4,29 @@ import (
 	"context"
 	"fmt"

-	"github.com/OffchainLabs/prysm/v6/async/event"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/cache"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/blocks"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/feed"
-	statefeed "github.com/OffchainLabs/prysm/v6/beacon-chain/core/feed/state"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/helpers"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/time"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/transition"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/execution"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v6/config/features"
-	"github.com/OffchainLabs/prysm/v6/config/params"
-	consensusblocks "github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
-	payloadattribute "github.com/OffchainLabs/prysm/v6/consensus-types/payload-attribute"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	"github.com/OffchainLabs/prysm/v6/monitoring/tracing/trace"
-	enginev1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	"github.com/OffchainLabs/prysm/v6/runtime/version"
-	"github.com/OffchainLabs/prysm/v6/time/slots"
 	"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"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/execution"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/config/features"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
+	consensusblocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	"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/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
+	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	"github.com/sirupsen/logrus"
 )

@@ -184,17 +184,13 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *fcuConfig) (*
 	return payloadID, nil
 }

-func (s *Service) firePayloadAttributesEvent(f event.SubscriberSender, block interfaces.ReadOnlySignedBeaconBlock, root [32]byte, nextSlot primitives.Slot) {
-	// If we're syncing a block in the past and init-sync is still running, we shouldn't fire this event.
-	if !s.cfg.SyncChecker.Synced() {
-		return
-	}
+func firePayloadAttributesEvent(_ context.Context, f event.SubscriberSender, nextSlot primitives.Slot) {
 	// the fcu args have differing amounts of completeness based on the code path,
 	// and there is work we only want to do if a client is actually listening to the events beacon api endpoint.
 	// temporary solution: just fire a blank event and fill in the details in the api handler.
 	f.Send(&feed.Event{
 		Type: statefeed.PayloadAttributes,
-		Data: payloadattribute.EventData{HeadBlock: block, HeadRoot: root, ProposalSlot: nextSlot},
+		Data: payloadattribute.EventData{ProposalSlot: nextSlot},
 	})
 }

--- a/beacon-chain/blockchain/execution_engine_test.go
+++ b/beacon-chain/blockchain/execution_engine_test.go
@@ -5,27 +5,27 @@ import (
 	"testing"
 	"time"

-	"github.com/OffchainLabs/prysm/v6/beacon-chain/cache"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/blocks"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/execution"
-	mockExecution "github.com/OffchainLabs/prysm/v6/beacon-chain/execution/testing"
-	forkchoicetypes "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/types"
-	bstate "github.com/OffchainLabs/prysm/v6/beacon-chain/state"
-	state_native "github.com/OffchainLabs/prysm/v6/beacon-chain/state/state-native"
-	"github.com/OffchainLabs/prysm/v6/config/features"
-	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
-	"github.com/OffchainLabs/prysm/v6/config/params"
-	consensusblocks "github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
-	v1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
-	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v6/testing/assert"
-	"github.com/OffchainLabs/prysm/v6/testing/require"
-	"github.com/OffchainLabs/prysm/v6/testing/util"
 	"github.com/ethereum/go-ethereum/common"
 	gethtypes "github.com/ethereum/go-ethereum/core/types"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/execution"
+	mockExecution "github.com/prysmaticlabs/prysm/v5/beacon-chain/execution/testing"
+	forkchoicetypes "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/types"
+	bstate "github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	"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"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	v1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
 )

 func Test_NotifyForkchoiceUpdate_GetPayloadAttrErrorCanContinue(t *testing.T) {
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
james-prysm	b6e43638a3	changelog	2025-04-03 16:46:04 -05:00
james-prysm	7ccb2ba291	moved http-util to api package, and merged with api util. renamed grpc to grpcutil"	2025-04-03 16:34:27 -05:00