fsdafsdfsdf

Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>

.github/workflows/go.yml

@@ -38,10 +38,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
-      - name: Set up Go 1.17
+      - name: Set up Go 1.18
         uses: actions/setup-go@v3
         with:
-          go-version: 1.17
+          go-version: 1.18
       - name: Run Gosec Security Scanner
         run: | # https://github.com/securego/gosec/issues/469
           export PATH=$PATH:$(go env GOPATH)/bin
@@ -55,16 +55,16 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Set up Go 1.17
+      - name: Set up Go 1.18
         uses: actions/setup-go@v3
         with:
-          go-version: 1.17
+          go-version: 1.18
           id: go
 
       - name: Golangci-lint
         uses: golangci/golangci-lint-action@v2
         with:
-          args: --print-issued-lines --sort-results --no-config --timeout=10m --disable-all -E deadcode  -E errcheck -E gosimple --skip-files=validator/web/site_data.go --skip-dirs=proto --go=1.17
+          args: --print-issued-lines --sort-results --no-config --timeout=10m --disable-all -E deadcode  -E errcheck -E gosimple --skip-files=validator/web/site_data.go --skip-dirs=proto --go=1.18
           version: v1.45.2
           skip-go-installation: true
 
@@ -75,7 +75,7 @@ jobs:
       - name: Set up Go 1.x
         uses: actions/setup-go@v2
         with:
-          go-version: 1.17
+          go-version: 1.18
         id: go
 
       - name: Check out code into the Go module directory
@@ -89,6 +89,11 @@ jobs:
         # Use blst tag to allow go and bazel builds for blst.
         run: go build -v ./...
 
+        # fuzz and blst_disabled leverage go tag based stubs at compile time.
+        # Building with these tags should be checked and enforced at pre-submit.
+      - name: Build for fuzzing
+        run: go build -tags=fuzz,blst_disabled ./... 
+
 # Tests run via Bazel for now...
 #      - name: Test
 #        run: go test -v ./...

.gitignore

@@ -32,3 +32,6 @@ dist
 
 # deepsource cli
 bin
+
+# p2p metaData
+metaData

INTEROP.md

@@ -26,15 +26,18 @@ You can use `bazel run //tools/genesis-state-gen` to create a deterministic gene
 ### Usage
 
 - **--genesis-time** uint: Unix timestamp used as the genesis time in the generated genesis state (defaults to now)
-- **--mainnet-config** bool: Select whether genesis state should be generated with mainnet or minimal (default) params
 - **--num-validators** int: Number of validators to deterministically include in the generated genesis state
 - **--output-ssz** string: Output filename of the SSZ marshaling of the generated genesis state
+- **--config-name=interop** string: name of the beacon chain config to use when generating the state. ex mainnet|minimal|interop
+
+**deprecated flag: use --config-name instead**
+- **--mainnet-config** bool: Select whether genesis state should be generated with mainnet or minimal (default) params
 
 The example below creates 64 validator keys, instantiates a genesis state with those 64 validators and with genesis unix timestamp 1567542540,
-and finally writes a ssz encoded output to ~/Desktop/genesis.ssz. This file can be used to kickstart the beacon chain in the next section.
+and finally writes a ssz encoded output to ~/Desktop/genesis.ssz. This file can be used to kickstart the beacon chain in the next section. When using the `--interop-*` flags, the beacon node will assume the `interop` config should be used, unless a different config is specified on the command line.
 
 ```
-bazel run //tools/genesis-state-gen -- --output-ssz ~/Desktop/genesis.ssz --num-validators 64 --genesis-time 1567542540
+bazel run //tools/genesis-state-gen -- --config-name interop --output-ssz ~/Desktop/genesis.ssz --num-validators 64 --genesis-time 1567542540
 ```
 
 ## Launching a Beacon Node + Validator Client
@@ -46,8 +49,10 @@ Open up two terminal windows, run:
 ```
 bazel run //beacon-chain -- \
 --bootstrap-node= \
---deposit-contract $(curl -s https://prylabs.net/contract) \
+--deposit-contract 0x8A04d14125D0FDCDc742F4A05C051De07232EDa4 \
+--datadir=/tmp/beacon-chain-interop \
 --force-clear-db \
+--min-sync-peers=0 \
 --interop-num-validators 64 \
 --interop-eth1data-votes
 ```
@@ -69,8 +74,10 @@ Assuming you generated a `genesis.ssz` file with 64 validators, open up two term
 ```
  bazel run //beacon-chain -- \
 --bootstrap-node= \
---deposit-contract $(curl -s https://prylabs.net/contract) \
+--deposit-contract 0x8A04d14125D0FDCDc742F4A05C051De07232EDa4 \
+--datadir=/tmp/beacon-chain-interop \
 --force-clear-db \
+--min-sync-peers=0 \
 --interop-genesis-state /path/to/genesis.ssz \
 --interop-eth1data-votes
 ```

README.md

@@ -2,7 +2,7 @@
 
 [![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/prysmaticlabs/prysm)](https://goreportcard.com/report/github.com/prysmaticlabs/prysm)
-[![Consensus_Spec_Version 1.1.8](https://img.shields.io/badge/Consensus%20Spec%20Version-v1.1.8-blue.svg)](https://github.com/ethereum/consensus-specs/tree/v1.1.8)
+[![Consensus_Spec_Version 1.1.10](https://img.shields.io/badge/Consensus%20Spec%20Version-v1.1.10-blue.svg)](https://github.com/ethereum/consensus-specs/tree/v1.1.10)
 [![Discord](https://user-images.githubusercontent.com/7288322/34471967-1df7808a-efbb-11e7-9088-ed0b04151291.png)](https://discord.gg/CTYGPUJ)
 
 This is the core repository for Prysm, a [Golang](https://golang.org/) implementation of the [Ethereum Consensus](https://ethereum.org/en/eth2/) specification, developed by [Prysmatic Labs](https://prysmaticlabs.com). See the [Changelog](https://github.com/prysmaticlabs/prysm/releases) for details of the latest releases and upcoming breaking changes.

api/client/beacon/BUILD.bazel

@@ -14,13 +14,13 @@ go_library(
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/rpc/apimiddleware:go_default_library",
         "//beacon-chain/state:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//encoding/ssz/detect:go_default_library",
         "//io/file:go_default_library",
         "//network/forks:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
-        "//proto/prysm/v1alpha1/block:go_default_library",
         "//runtime/version:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
@@ -41,10 +41,10 @@ go_test(
         "//beacon-chain/state:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//consensus-types/wrapper:go_default_library",
         "//encoding/ssz/detect:go_default_library",
         "//network/forks:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
-        "//proto/prysm/v1alpha1/wrapper:go_default_library",
         "//runtime/version:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",

api/client/beacon/checkpoint.go

@@ -8,10 +8,10 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/encoding/ssz/detect"
 	"github.com/prysmaticlabs/prysm/io/file"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/runtime/version"
 	"github.com/prysmaticlabs/prysm/time/slots"
 	log "github.com/sirupsen/logrus"
@@ -25,7 +25,7 @@ type OriginData struct {
 	sb  []byte
 	bb  []byte
 	st  state.BeaconState
-	b   block.SignedBeaconBlock
+	b   interfaces.SignedBeaconBlock
 	cf  *detect.VersionedUnmarshaler
 }
 
@@ -40,15 +40,15 @@ func (od *OriginData) CheckpointString() string {
 // SaveBlock saves the downloaded block to a unique file in the given path.
 // For readability and collision avoidance, the file name includes: type, config name, slot and root
 func (od *OriginData) SaveBlock(dir string) (string, error) {
-	blockPath := path.Join(dir, fname("state", od.cf, od.st.Slot(), od.wsd.BlockRoot))
-	return blockPath, file.WriteFile(blockPath, od.sb)
+	blockPath := path.Join(dir, fname("block", od.cf, od.b.Block().Slot(), od.wsd.BlockRoot))
+	return blockPath, file.WriteFile(blockPath, od.BlockBytes())
 }
 
 // SaveState saves the downloaded state to a unique file in the given path.
 // For readability and collision avoidance, the file name includes: type, config name, slot and root
 func (od *OriginData) SaveState(dir string) (string, error) {
 	statePath := path.Join(dir, fname("state", od.cf, od.st.Slot(), od.wsd.StateRoot))
-	return statePath, file.WriteFile(statePath, od.sb)
+	return statePath, file.WriteFile(statePath, od.StateBytes())
 }
 
 // StateBytes returns the ssz-encoded bytes of the downloaded BeaconState value.

api/client/beacon/checkpoint_test.go

@@ -7,9 +7,10 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"testing"
 
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/network/forks"
@@ -66,9 +67,8 @@ func TestMarshalToEnvelope(t *testing.T) {
 
 func TestFallbackVersionCheck(t *testing.T) {
 	c := &Client{
-		hc:     &http.Client{},
-		host:   "localhost:3500",
-		scheme: "http",
+		hc:      &http.Client{},
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
 	}
 	c.hc.Transport = &testRT{rt: func(req *http.Request) (*http.Response, error) {
 		res := &http.Response{Request: req}
@@ -200,9 +200,8 @@ func TestDownloadOriginData(t *testing.T) {
 		}},
 	}
 	c := &Client{
-		hc:     hc,
-		host:   "localhost:3500",
-		scheme: "http",
+		hc:      hc,
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
 	}
 
 	od, err := DownloadOriginData(ctx, c)
@@ -294,9 +293,8 @@ func TestDownloadBackwardsCompatibleCombined(t *testing.T) {
 		}},
 	}
 	c := &Client{
-		hc:     hc,
-		host:   "localhost:3500",
-		scheme: "http",
+		hc:      hc,
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
 	}
 
 	odPub, err := DownloadOriginData(ctx, c)
@@ -327,9 +325,8 @@ func TestGetWeakSubjectivityEpochFromHead(t *testing.T) {
 		}},
 	}
 	c := &Client{
-		hc:     hc,
-		host:   "localhost:3500",
-		scheme: "http",
+		hc:      hc,
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
 	}
 	actualEpoch, err := getWeakSubjectivityEpochFromHead(context.Background(), c)
 	require.NoError(t, err)

api/client/beacon/client.go

@@ -46,19 +46,19 @@ const (
 type StateOrBlockId string
 
 const (
-	IdFinalized StateOrBlockId = "finalized"
-	IdGenesis   StateOrBlockId = "genesis"
-	IdHead      StateOrBlockId = "head"
-	IdJustified StateOrBlockId = "justified"
+	IdGenesis StateOrBlockId = "genesis"
+	IdHead    StateOrBlockId = "head"
 )
 
+var ErrMalformedHostname = errors.New("hostname must include port, separated by one colon, like example.com:3500")
+
 // IdFromRoot encodes a block root in the format expected by the API in places where a root can be used to identify
 // a BeaconState or SignedBeaconBlock.
 func IdFromRoot(r [32]byte) StateOrBlockId {
 	return StateOrBlockId(fmt.Sprintf("%#x", r))
 }
 
-// IdFromRoot encodes a Slot in the format expected by the API in places where a slot can be used to identify
+// IdFromSlot encodes a Slot in the format expected by the API in places where a slot can be used to identify
 // a BeaconState or SignedBeaconBlock.
 func IdFromSlot(s types.Slot) StateOrBlockId {
 	return StateOrBlockId(strconv.FormatUint(uint64(s), 10))
@@ -93,23 +93,23 @@ func WithTimeout(timeout time.Duration) ClientOpt {
 
 // Client provides a collection of helper methods for calling the Eth Beacon Node API endpoints.
 type Client struct {
-	hc     *http.Client
-	host   string
-	scheme string
+	hc      *http.Client
+	host    string
+	scheme  string
+	baseURL *url.URL
 }
 
 // NewClient constructs a new client with the provided options (ex WithTimeout).
 // `host` is the base host + port used to construct request urls. This value can be
 // a URL string, or NewClient will assume an http endpoint if just `host:port` is used.
 func NewClient(host string, opts ...ClientOpt) (*Client, error) {
-	host, err := validHostname(host)
+	u, err := urlForHost(host)
 	if err != nil {
 		return nil, err
 	}
 	c := &Client{
-		hc:     &http.Client{},
-		scheme: "http",
-		host:   host,
+		hc:      &http.Client{},
+		baseURL: u,
 	}
 	for _, o := range opts {
 		o(c)
@@ -117,36 +117,23 @@ func NewClient(host string, opts ...ClientOpt) (*Client, error) {
 	return c, nil
 }
 
-func validHostname(h string) (string, error) {
+func urlForHost(h string) (*url.URL, error) {
 	// try to parse as url (being permissive)
 	u, err := url.Parse(h)
 	if err == nil && u.Host != "" {
-		return u.Host, nil
+		return u, nil
 	}
 	// try to parse as host:port
 	host, port, err := net.SplitHostPort(h)
 	if err != nil {
-		return "", err
+		return nil, ErrMalformedHostname
 	}
-	return fmt.Sprintf("%s:%s", host, port), nil
+	return &url.URL{Host: fmt.Sprintf("%s:%s", host, port), Scheme: "http"}, nil
 }
 
 // NodeURL returns a human-readable string representation of the beacon node base url.
 func (c *Client) NodeURL() string {
-	u := &url.URL{
-		Scheme: c.scheme,
-		Host:   c.host,
-	}
-	return u.String()
-}
-
-func (c *Client) urlForPath(methodPath string) *url.URL {
-	u := &url.URL{
-		Scheme: c.scheme,
-		Host:   c.host,
-	}
-	u.Path = path.Join(u.Path, methodPath)
-	return u
+	return c.baseURL.String()
 }
 
 type reqOption func(*http.Request)
@@ -159,7 +146,7 @@ func withSSZEncoding() reqOption {
 
 // get is a generic, opinionated GET function to reduce boilerplate amongst the getters in this package.
 func (c *Client) get(ctx context.Context, path string, opts ...reqOption) ([]byte, error) {
-	u := c.urlForPath(path)
+	u := c.baseURL.ResolveReference(&url.URL{Path: path})
 	log.Printf("requesting %s", u.String())
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, u.String(), nil)
 	if err != nil {
@@ -272,7 +259,7 @@ type NodeVersion struct {
 	systemInfo     string
 }
 
-var versionRE = regexp.MustCompile(`^(\w+)\/(v\d+\.\d+\.\d+) \((.*)\)$`)
+var versionRE = regexp.MustCompile(`^(\w+)/(v\d+\.\d+\.\d+[-a-zA-Z0-9]*)\s*/?(.*)$`)
 
 func parseNodeVersion(v string) (*NodeVersion, error) {
 	groups := versionRE.FindStringSubmatch(v)

api/client/beacon/client_test.go

@@ -1,6 +1,7 @@
 package beacon
 
 import (
+	"net/url"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/testing/require"
@@ -28,18 +29,40 @@ func TestParseNodeVersion(t *testing.T) {
 			v:    "v2.0.6",
 			err:  ErrInvalidNodeVersion,
 		},
-		{
-			name: "implementation and semver only",
-			v:    "Prysm/v2.0.6",
-			err:  ErrInvalidNodeVersion,
-		},
 		{
 			name: "complete version",
 			v:    "Prysm/v2.0.6 (linux amd64)",
 			nv: &NodeVersion{
 				implementation: "Prysm",
 				semver:         "v2.0.6",
-				systemInfo:     "linux amd64",
+				systemInfo:     "(linux amd64)",
+			},
+		},
+		{
+			name: "nimbus version",
+			v:    "Nimbus/v22.4.0-039bec-stateofus",
+			nv: &NodeVersion{
+				implementation: "Nimbus",
+				semver:         "v22.4.0-039bec-stateofus",
+				systemInfo:     "",
+			},
+		},
+		{
+			name: "teku version",
+			v:    "teku/v22.3.2/linux-x86_64/oracle-java-11",
+			nv: &NodeVersion{
+				implementation: "teku",
+				semver:         "v22.3.2",
+				systemInfo:     "linux-x86_64/oracle-java-11",
+			},
+		},
+		{
+			name: "lighthouse version",
+			v:    "Lighthouse/v2.1.1-5f628a7/x86_64-linux",
+			nv: &NodeVersion{
+				implementation: "Lighthouse",
+				semver:         "v2.1.1-5f628a7",
+				systemInfo:     "x86_64-linux",
 			},
 		},
 	}
@@ -56,3 +79,60 @@ func TestParseNodeVersion(t *testing.T) {
 		})
 	}
 }
+
+func TestValidHostname(t *testing.T) {
+	cases := []struct {
+		name    string
+		hostArg string
+		path    string
+		joined  string
+		err     error
+	}{
+		{
+			name:    "hostname without port",
+			hostArg: "mydomain.org",
+			err:     ErrMalformedHostname,
+		},
+		{
+			name:    "hostname with port",
+			hostArg: "mydomain.org:3500",
+			path:    getNodeVersionPath,
+			joined:  "http://mydomain.org:3500/eth/v1/node/version",
+		},
+		{
+			name:    "https scheme, hostname with port",
+			hostArg: "https://mydomain.org:3500",
+			path:    getNodeVersionPath,
+			joined:  "https://mydomain.org:3500/eth/v1/node/version",
+		},
+		{
+			name:    "http scheme, hostname without port",
+			hostArg: "http://mydomain.org",
+			path:    getNodeVersionPath,
+			joined:  "http://mydomain.org/eth/v1/node/version",
+		},
+		{
+			name:    "http scheme, trailing slash, hostname without port",
+			hostArg: "http://mydomain.org/",
+			path:    getNodeVersionPath,
+			joined:  "http://mydomain.org/eth/v1/node/version",
+		},
+		{
+			name:    "http scheme, hostname with basic auth creds and no port",
+			hostArg: "http://username:pass@mydomain.org/",
+			path:    getNodeVersionPath,
+			joined:  "http://username:pass@mydomain.org/eth/v1/node/version",
+		},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			cl, err := NewClient(c.hostArg)
+			if c.err != nil {
+				require.ErrorIs(t, err, c.err)
+				return
+			}
+			require.NoError(t, err)
+			require.Equal(t, c.joined, cl.baseURL.ResolveReference(&url.URL{Path: c.path}).String())
+		})
+	}
+}

api/client/builder/BUILD.bazel

@@ -0,0 +1,41 @@
+load("@prysm//tools/go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "client.go",
+        "errors.go",
+        "types.go",
+    ],
+    importpath = "github.com/prysmaticlabs/prysm/api/client/builder",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//consensus-types/primitives:go_default_library",
+        "//encoding/bytesutil:go_default_library",
+        "//proto/engine/v1:go_default_library",
+        "//proto/prysm/v1alpha1:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = [
+        "client_test.go",
+        "types_test.go",
+    ],
+    data = glob(["testdata/**"]),
+    embed = [":go_default_library"],
+    deps = [
+        "//config/fieldparams:go_default_library",
+        "//consensus-types/primitives:go_default_library",
+        "//encoding/bytesutil:go_default_library",
+        "//proto/engine/v1:go_default_library",
+        "//proto/prysm/v1alpha1:go_default_library",
+        "//testing/require:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
+        "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
+    ],
+)

api/client/builder/client.go

@@ -0,0 +1,206 @@
+package builder
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"text/template"
+	"time"
+
+	v1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+
+	"github.com/pkg/errors"
+	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	getExecHeaderPath          = "/eth/v1/builder/header/{{.Slot}}/{{.ParentHash}}/{{.Pubkey}}"
+	getStatus                  = "/eth/v1/builder/status"
+	postBlindedBeaconBlockPath = "/eth/v1/builder/blinded_blocks"
+	postRegisterValidatorPath  = "/eth/v1/builder/validators"
+)
+
+var errMalformedHostname = errors.New("hostname must include port, separated by one colon, like example.com:3500")
+
+// ClientOpt is a functional option for the Client type (http.Client wrapper)
+type ClientOpt func(*Client)
+
+// WithTimeout sets the .Timeout attribute of the wrapped http.Client.
+func WithTimeout(timeout time.Duration) ClientOpt {
+	return func(c *Client) {
+		c.hc.Timeout = timeout
+	}
+}
+
+// Client provides a collection of helper methods for calling Builder API endpoints.
+type Client struct {
+	hc      *http.Client
+	baseURL *url.URL
+}
+
+// NewClient constructs a new client with the provided options (ex WithTimeout).
+// `host` is the base host + port used to construct request urls. This value can be
+// a URL string, or NewClient will assume an http endpoint if just `host:port` is used.
+func NewClient(host string, opts ...ClientOpt) (*Client, error) {
+	u, err := urlForHost(host)
+	if err != nil {
+		return nil, err
+	}
+	c := &Client{
+		hc:      &http.Client{},
+		baseURL: u,
+	}
+	for _, o := range opts {
+		o(c)
+	}
+	return c, nil
+}
+
+func urlForHost(h string) (*url.URL, error) {
+	// try to parse as url (being permissive)
+	u, err := url.Parse(h)
+	if err == nil && u.Host != "" {
+		return u, nil
+	}
+	// try to parse as host:port
+	host, port, err := net.SplitHostPort(h)
+	if err != nil {
+		return nil, errMalformedHostname
+	}
+	return &url.URL{Host: net.JoinHostPort(host, port), Scheme: "http"}, nil
+}
+
+// NodeURL returns a human-readable string representation of the beacon node base url.
+func (c *Client) NodeURL() string {
+	return c.baseURL.String()
+}
+
+type reqOption func(*http.Request)
+
+// do is a generic, opinionated GET function to reduce boilerplate amongst the getters in this packageapi/client/builder/types.go.
+func (c *Client) do(ctx context.Context, method string, path string, body io.Reader, opts ...reqOption) ([]byte, error) {
+	u := c.baseURL.ResolveReference(&url.URL{Path: path})
+	log.Printf("requesting %s", u.String())
+	req, err := http.NewRequestWithContext(ctx, method, u.String(), body)
+	if err != nil {
+		return nil, err
+	}
+	for _, o := range opts {
+		o(req)
+	}
+	r, err := c.hc.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		err = r.Body.Close()
+	}()
+	if r.StatusCode != http.StatusOK {
+		return nil, non200Err(r)
+	}
+	b, err := io.ReadAll(r.Body)
+	if err != nil {
+		return nil, errors.Wrap(err, "error reading http response body from GetBlock")
+	}
+	return b, nil
+}
+
+var execHeaderTemplate = template.Must(template.New("").Parse(getExecHeaderPath))
+
+func execHeaderPath(slot types.Slot, parentHash [32]byte, pubkey [48]byte) (string, error) {
+	v := struct {
+		Slot       types.Slot
+		ParentHash string
+		Pubkey     string
+	}{
+		Slot:       slot,
+		ParentHash: fmt.Sprintf("%#x", parentHash),
+		Pubkey:     fmt.Sprintf("%#x", pubkey),
+	}
+	b := bytes.NewBuffer(nil)
+	err := execHeaderTemplate.Execute(b, v)
+	if err != nil {
+		return "", errors.Wrapf(err, "error rendering exec header template with slot=%d, parentHash=%#x, pubkey=%#x", slot, parentHash, pubkey)
+	}
+	return b.String(), nil
+}
+
+// GetHeader is used by a proposing validator to request an ExecutionPayloadHeader from the Builder node.
+func (c *Client) GetHeader(ctx context.Context, slot types.Slot, parentHash [32]byte, pubkey [48]byte) (*ethpb.SignedBuilderBid, error) {
+	path, err := execHeaderPath(slot, parentHash, pubkey)
+	if err != nil {
+		return nil, err
+	}
+	hb, err := c.do(ctx, http.MethodGet, path, nil)
+	if err != nil {
+		return nil, err
+	}
+	hr := &ExecHeaderResponse{}
+	if err := json.Unmarshal(hb, hr); err != nil {
+		return nil, errors.Wrapf(err, "error unmarshaling the builder GetHeader response, using slot=%d, parentHash=%#x, pubkey=%#x", slot, parentHash, pubkey)
+	}
+	return hr.ToProto()
+}
+
+// RegisterValidator encodes the SignedValidatorRegistrationV1 message to json (including hex-encoding the byte
+// fields with 0x prefixes) and posts to the builder validator registration endpoint.
+func (c *Client) RegisterValidator(ctx context.Context, svr *ethpb.SignedValidatorRegistrationV1) error {
+	v := &SignedValidatorRegistration{SignedValidatorRegistrationV1: svr}
+	body, err := json.Marshal(v)
+	if err != nil {
+		return errors.Wrap(err, "error encoding the SignedValidatorRegistration value body in RegisterValidator")
+	}
+	_, err = c.do(ctx, http.MethodPost, postRegisterValidatorPath, bytes.NewBuffer(body))
+	return err
+}
+
+// SubmitBlindedBlock calls the builder API endpoint that binds the validator to the builder and submits the block.
+// The response is the full ExecutionPayload used to create the blinded block.
+func (c *Client) SubmitBlindedBlock(ctx context.Context, sb *ethpb.SignedBlindedBeaconBlockBellatrix) (*v1.ExecutionPayload, error) {
+	v := &SignedBlindedBeaconBlockBellatrix{SignedBlindedBeaconBlockBellatrix: sb}
+	body, err := json.Marshal(v)
+	if err != nil {
+		return nil, errors.Wrap(err, "error encoding the SignedBlindedBeaconBlockBellatrix value body in SubmitBlindedBlock")
+	}
+	rb, err := c.do(ctx, http.MethodPost, postBlindedBeaconBlockPath, bytes.NewBuffer(body))
+	if err != nil {
+		return nil, errors.Wrap(err, "error posting the SignedBlindedBeaconBlockBellatrix to the builder api")
+	}
+	ep := &ExecPayloadResponse{}
+	if err := json.Unmarshal(rb, ep); err != nil {
+		return nil, errors.Wrap(err, "error unmarshaling the builder SubmitBlindedBlock response")
+	}
+	return ep.ToProto()
+}
+
+// Status asks the remote builder server for a health check. A response of 200 with an empty body is the success/healthy
+// response, and an error response may have an error message. This method will return a nil value for error in the
+// 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 {
+	_, err := c.do(ctx, http.MethodGet, getStatus, nil)
+	return err
+}
+
+func non200Err(response *http.Response) error {
+	bodyBytes, err := io.ReadAll(response.Body)
+	var body string
+	if err != nil {
+		body = "(Unable to read response body.)"
+	} else {
+		body = "response body:\n" + string(bodyBytes)
+	}
+	msg := fmt.Sprintf("code=%d, url=%s, body=%s", response.StatusCode, response.Request.URL, body)
+	switch response.StatusCode {
+	case 404:
+		return errors.Wrap(ErrNotFound, msg)
+	default:
+		return errors.Wrap(ErrNotOK, msg)
+	}
+}

api/client/builder/client_test.go

@@ -0,0 +1,323 @@
+package builder
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+	"testing"
+
+	"github.com/prysmaticlabs/go-bitfield"
+	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
+	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
+	eth "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/testing/require"
+)
+
+type roundtrip func(*http.Request) (*http.Response, error)
+
+func (fn roundtrip) RoundTrip(r *http.Request) (*http.Response, error) {
+	return fn(r)
+}
+
+func TestClient_Status(t *testing.T) {
+	ctx := context.Background()
+	statusPath := "/eth/v1/builder/status"
+	hc := &http.Client{
+		Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
+			defer func() {
+				if r.Body == nil {
+					return
+				}
+				require.NoError(t, r.Body.Close())
+			}()
+			require.Equal(t, statusPath, r.URL.Path)
+			return &http.Response{
+				StatusCode: http.StatusOK,
+				Body:       io.NopCloser(bytes.NewBuffer(nil)),
+				Request:    r.Clone(ctx),
+			}, nil
+		}),
+	}
+	c := &Client{
+		hc:      hc,
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
+	}
+	require.NoError(t, c.Status(ctx))
+	hc = &http.Client{
+		Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
+			defer func() {
+				if r.Body == nil {
+					return
+				}
+				require.NoError(t, r.Body.Close())
+			}()
+			require.Equal(t, statusPath, r.URL.Path)
+			return &http.Response{
+				StatusCode: http.StatusInternalServerError,
+				Body:       io.NopCloser(bytes.NewBuffer(nil)),
+				Request:    r.Clone(ctx),
+			}, nil
+		}),
+	}
+	c = &Client{
+		hc:      hc,
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
+	}
+	require.ErrorIs(t, c.Status(ctx), ErrNotOK)
+}
+
+func TestClient_RegisterValidator(t *testing.T) {
+	ctx := context.Background()
+	expectedBody := `{"message":{"fee_recipient":"0x0000000000000000000000000000000000000000","gas_limit":"23","timestamp":"42","pubkey":"0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"}}`
+	expectedPath := "/eth/v1/builder/validators"
+	hc := &http.Client{
+		Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
+			body, err := io.ReadAll(r.Body)
+			defer func() {
+				require.NoError(t, r.Body.Close())
+			}()
+			require.NoError(t, err)
+			require.Equal(t, expectedBody, string(body))
+			require.Equal(t, expectedPath, r.URL.Path)
+			require.Equal(t, http.MethodPost, r.Method)
+			return &http.Response{
+				StatusCode: http.StatusOK,
+				Body:       io.NopCloser(bytes.NewBuffer(nil)),
+				Request:    r.Clone(ctx),
+			}, nil
+		}),
+	}
+	c := &Client{
+		hc:      hc,
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
+	}
+	reg := &eth.SignedValidatorRegistrationV1{
+		Message: &eth.ValidatorRegistrationV1{
+			FeeRecipient: ezDecode(t, fieldparams.EthBurnAddressHex),
+			GasLimit:     23,
+			Timestamp:    42,
+			Pubkey:       ezDecode(t, "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"),
+		},
+	}
+	require.NoError(t, c.RegisterValidator(ctx, reg))
+}
+
+func TestClient_GetHeader(t *testing.T) {
+	ctx := context.Background()
+	expectedPath := "/eth/v1/builder/header/23/0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2/0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+	hc := &http.Client{
+		Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
+			require.Equal(t, expectedPath, r.URL.Path)
+			return &http.Response{
+				StatusCode: http.StatusInternalServerError,
+				Body:       io.NopCloser(bytes.NewBuffer(nil)),
+				Request:    r.Clone(ctx),
+			}, nil
+		}),
+	}
+	c := &Client{
+		hc:      hc,
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
+	}
+	var slot types.Slot = 23
+	parentHash := ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	pubkey := ezDecode(t, "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a")
+	_, err := c.GetHeader(ctx, slot, bytesutil.ToBytes32(parentHash), bytesutil.ToBytes48(pubkey))
+	require.ErrorIs(t, err, ErrNotOK)
+
+	hc = &http.Client{
+		Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
+			require.Equal(t, expectedPath, r.URL.Path)
+			return &http.Response{
+				StatusCode: http.StatusOK,
+				Body:       io.NopCloser(bytes.NewBufferString(testExampleHeaderResponse)),
+				Request:    r.Clone(ctx),
+			}, nil
+		}),
+	}
+	c = &Client{
+		hc:      hc,
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
+	}
+	h, err := c.GetHeader(ctx, slot, bytesutil.ToBytes32(parentHash), bytesutil.ToBytes48(pubkey))
+	require.NoError(t, err)
+	expectedSig := ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505")
+	require.Equal(t, true, bytes.Equal(expectedSig, h.Signature))
+	expectedTxRoot := ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.Equal(t, true, bytes.Equal(expectedTxRoot, h.Message.Header.TransactionsRoot))
+	require.Equal(t, uint64(1), h.Message.Header.GasUsed)
+	value := stringToUint256("652312848583266388373324160190187140051835877600158453279131187530910662656")
+	require.Equal(t, fmt.Sprintf("%#x", value.SSZBytes()), fmt.Sprintf("%#x", h.Message.Value))
+}
+
+func TestSubmitBlindedBlock(t *testing.T) {
+	ctx := context.Background()
+	hc := &http.Client{
+		Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
+			require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
+			return &http.Response{
+				StatusCode: http.StatusOK,
+				Body:       io.NopCloser(bytes.NewBufferString(testExampleExecutionPayload)),
+				Request:    r.Clone(ctx),
+			}, nil
+		}),
+	}
+	c := &Client{
+		hc:      hc,
+		baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
+	}
+	sbbb := testSignedBlindedBeaconBlockBellatrix(t)
+	ep, err := c.SubmitBlindedBlock(ctx, sbbb)
+	require.NoError(t, err)
+	require.Equal(t, true, bytes.Equal(ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"), ep.ParentHash))
+	bfpg := stringToUint256("452312848583266388373324160190187140051835877600158453279131187530910662656")
+	require.Equal(t, fmt.Sprintf("%#x", bfpg.SSZBytes()), fmt.Sprintf("%#x", ep.BaseFeePerGas))
+	require.Equal(t, uint64(1), ep.GasLimit)
+}
+
+func testSignedBlindedBeaconBlockBellatrix(t *testing.T) *eth.SignedBlindedBeaconBlockBellatrix {
+	return &eth.SignedBlindedBeaconBlockBellatrix{
+		Block: &eth.BlindedBeaconBlockBellatrix{
+			Slot:          1,
+			ProposerIndex: 1,
+			ParentRoot:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+			StateRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+			Body: &eth.BlindedBeaconBlockBodyBellatrix{
+				RandaoReveal: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+				Eth1Data: &eth.Eth1Data{
+					DepositRoot:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					DepositCount: 1,
+					BlockHash:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				},
+				Graffiti: ezDecode(t, "0xdeadbeefc0ffee"),
+				ProposerSlashings: []*eth.ProposerSlashing{
+					{
+						Header_1: &eth.SignedBeaconBlockHeader{
+							Header: &eth.BeaconBlockHeader{
+								Slot:          1,
+								ProposerIndex: 1,
+								ParentRoot:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								StateRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								BodyRoot:      ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+							},
+							Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+						},
+						Header_2: &eth.SignedBeaconBlockHeader{
+							Header: &eth.BeaconBlockHeader{
+								Slot:          1,
+								ProposerIndex: 1,
+								ParentRoot:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								StateRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								BodyRoot:      ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+							},
+							Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+						},
+					},
+				},
+				AttesterSlashings: []*eth.AttesterSlashing{
+					{
+						Attestation_1: &eth.IndexedAttestation{
+							AttestingIndices: []uint64{1},
+							Data: &eth.AttestationData{
+								Slot:            1,
+								CommitteeIndex:  1,
+								BeaconBlockRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								Source: &eth.Checkpoint{
+									Epoch: 1,
+									Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								},
+								Target: &eth.Checkpoint{
+									Epoch: 1,
+									Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								},
+							},
+							Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+						},
+						Attestation_2: &eth.IndexedAttestation{
+							AttestingIndices: []uint64{1},
+							Data: &eth.AttestationData{
+								Slot:            1,
+								CommitteeIndex:  1,
+								BeaconBlockRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								Source: &eth.Checkpoint{
+									Epoch: 1,
+									Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								},
+								Target: &eth.Checkpoint{
+									Epoch: 1,
+									Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								},
+							},
+							Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+						},
+					},
+				},
+				Attestations: []*eth.Attestation{
+					{
+						AggregationBits: bitfield.Bitlist{0x01},
+						Data: &eth.AttestationData{
+							Slot:            1,
+							CommitteeIndex:  1,
+							BeaconBlockRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+							Source: &eth.Checkpoint{
+								Epoch: 1,
+								Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+							},
+							Target: &eth.Checkpoint{
+								Epoch: 1,
+								Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+							},
+						},
+						Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+					},
+				},
+				Deposits: []*eth.Deposit{
+					{
+						Proof: [][]byte{ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")},
+						Data: &eth.Deposit_Data{
+							PublicKey:             ezDecode(t, "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"),
+							WithdrawalCredentials: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+							Amount:                1,
+							Signature:             ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+						},
+					},
+				},
+				VoluntaryExits: []*eth.SignedVoluntaryExit{
+					{
+						Exit: &eth.VoluntaryExit{
+							Epoch:          1,
+							ValidatorIndex: 1,
+						},
+						Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+					},
+				},
+				SyncAggregate: &eth.SyncAggregate{
+					SyncCommitteeSignature: make([]byte, 48),
+					SyncCommitteeBits:      bitfield.Bitvector512{0x01},
+				},
+				ExecutionPayloadHeader: &eth.ExecutionPayloadHeader{
+					ParentHash:       ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					FeeRecipient:     ezDecode(t, "0xabcf8e0d4e9587369b2301d0790347320302cc09"),
+					StateRoot:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					ReceiptsRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					LogsBloom:        ezDecode(t, "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
+					PrevRandao:       ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					BlockNumber:      1,
+					GasLimit:         1,
+					GasUsed:          1,
+					Timestamp:        1,
+					ExtraData:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					BaseFeePerGas:    []byte(strconv.FormatUint(1, 10)),
+					BlockHash:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					TransactionsRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				},
+			},
+		},
+		Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+	}
+}

api/client/builder/errors.go

@@ -0,0 +1,10 @@
+package builder
+
+import "github.com/pkg/errors"
+
+// ErrNotOK is used to indicate when an HTTP request to the Beacon Node API failed with any non-2xx response code.
+// More specific errors may be returned, but an error in reaction to a non-2xx response will always wrap ErrNotOK.
+var ErrNotOK = errors.New("did not receive 2xx response from API")
+
+// ErrNotFound specifically means that a '404 - NOT FOUND' response was received from the API.
+var ErrNotFound = errors.Wrap(ErrNotOK, "recv 404 NotFound response from API")

api/client/builder/types.go

@@ -0,0 +1,572 @@
+package builder
+
+import (
+	"encoding/json"
+	"fmt"
+	"math/big"
+	"strconv"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
+	v1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
+	eth "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+)
+
+type SignedValidatorRegistration struct {
+	*eth.SignedValidatorRegistrationV1
+}
+
+type ValidatorRegistration struct {
+	*eth.ValidatorRegistrationV1
+}
+
+func (r *SignedValidatorRegistration) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Message   *ValidatorRegistration `json:"message,omitempty"`
+		Signature hexutil.Bytes          `json:"signature,omitempty"`
+	}{
+		Message:   &ValidatorRegistration{r.Message},
+		Signature: r.SignedValidatorRegistrationV1.Signature,
+	})
+}
+
+func (r *ValidatorRegistration) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		FeeRecipient hexutil.Bytes `json:"fee_recipient,omitempty"`
+		GasLimit     string        `json:"gas_limit,omitempty"`
+		Timestamp    string        `json:"timestamp,omitempty"`
+		Pubkey       hexutil.Bytes `json:"pubkey,omitempty"`
+	}{
+		FeeRecipient: r.FeeRecipient,
+		GasLimit:     fmt.Sprintf("%d", r.GasLimit),
+		Timestamp:    fmt.Sprintf("%d", r.Timestamp),
+		Pubkey:       r.Pubkey,
+	})
+}
+
+type Uint256 struct {
+	*big.Int
+}
+
+func stringToUint256(s string) Uint256 {
+	bi := new(big.Int)
+	bi.SetString(s, 10)
+	return Uint256{Int: bi}
+}
+
+// sszBytesToUint256 creates a Uint256 from a ssz-style (little-endian byte slice) representation.
+func sszBytesToUint256(b []byte) Uint256 {
+	bi := new(big.Int)
+	return Uint256{Int: bi.SetBytes((b))}
+}
+
+// SSZBytes creates an ssz-style (little-endian byte slice) representation of the Uint256
+func (s Uint256) SSZBytes() []byte {
+	return bytesutil.ReverseByteOrder(s.Int.Bytes())
+}
+
+var errUnmarshalUint256Failed = errors.New("unable to UnmarshalText into a Uint256 value")
+
+func (s *Uint256) UnmarshalJSON(t []byte) error {
+	start := 0
+	end := len(t)
+	if t[0] == '"' {
+		start += 1
+	}
+	if t[end-1] == '"' {
+		end -= 1
+	}
+	return s.UnmarshalText(t[start:end])
+}
+
+func (s *Uint256) UnmarshalText(t []byte) error {
+	if s.Int == nil {
+		s.Int = big.NewInt(0)
+	}
+	z, ok := s.SetString(string(t), 10)
+	if !ok {
+		return errors.Wrapf(errUnmarshalUint256Failed, "value=%s", string(t))
+	}
+	s.Int = z
+	return nil
+}
+
+func (s Uint256) MarshalJSON() ([]byte, error) {
+	t, err := s.MarshalText()
+	if err != nil {
+		return nil, err
+	}
+	t = append([]byte{'"'}, t...)
+	t = append(t, '"')
+	return t, nil
+}
+
+func (s Uint256) MarshalText() ([]byte, error) {
+	return []byte(s.String()), nil
+}
+
+type Uint64String uint64
+
+func (s *Uint64String) UnmarshalText(t []byte) error {
+	u, err := strconv.ParseUint(string(t), 10, 64)
+	*s = Uint64String(u)
+	return err
+}
+
+func (s Uint64String) MarshalText() ([]byte, error) {
+	return []byte(fmt.Sprintf("%d", s)), nil
+}
+
+type ExecHeaderResponse struct {
+	Version string `json:"version,omitempty"`
+	Data    struct {
+		Signature hexutil.Bytes `json:"signature,omitempty"`
+		Message   *BuilderBid   `json:"message,omitempty"`
+	} `json:"data,omitempty"`
+}
+
+func (ehr *ExecHeaderResponse) ToProto() (*eth.SignedBuilderBid, error) {
+	bb, err := ehr.Data.Message.ToProto()
+	if err != nil {
+		return nil, err
+	}
+	return &eth.SignedBuilderBid{
+		Message:   bb,
+		Signature: ehr.Data.Signature,
+	}, nil
+}
+
+func (bb *BuilderBid) ToProto() (*eth.BuilderBid, error) {
+	header, err := bb.Header.ToProto()
+	if err != nil {
+		return nil, err
+	}
+	return &eth.BuilderBid{
+		Header: header,
+		Value:  bb.Value.SSZBytes(),
+		Pubkey: bb.Pubkey,
+	}, nil
+}
+
+func (h *ExecutionPayloadHeader) ToProto() (*eth.ExecutionPayloadHeader, error) {
+	return &eth.ExecutionPayloadHeader{
+		ParentHash:       h.ParentHash,
+		FeeRecipient:     h.FeeRecipient,
+		StateRoot:        h.StateRoot,
+		ReceiptsRoot:     h.ReceiptsRoot,
+		LogsBloom:        h.LogsBloom,
+		PrevRandao:       h.PrevRandao,
+		BlockNumber:      uint64(h.BlockNumber),
+		GasLimit:         uint64(h.GasLimit),
+		GasUsed:          uint64(h.GasUsed),
+		Timestamp:        uint64(h.Timestamp),
+		ExtraData:        h.ExtraData,
+		BaseFeePerGas:    h.BaseFeePerGas.SSZBytes(),
+		BlockHash:        h.BlockHash,
+		TransactionsRoot: h.TransactionsRoot,
+	}, nil
+}
+
+type BuilderBid struct {
+	Header *ExecutionPayloadHeader `json:"header,omitempty"`
+	Value  Uint256                 `json:"value,omitempty"`
+	Pubkey hexutil.Bytes           `json:"pubkey,omitempty"`
+}
+
+type ExecutionPayloadHeader struct {
+	ParentHash       hexutil.Bytes `json:"parent_hash,omitempty"`
+	FeeRecipient     hexutil.Bytes `json:"fee_recipient,omitempty"`
+	StateRoot        hexutil.Bytes `json:"state_root,omitempty"`
+	ReceiptsRoot     hexutil.Bytes `json:"receipts_root,omitempty"`
+	LogsBloom        hexutil.Bytes `json:"logs_bloom,omitempty"`
+	PrevRandao       hexutil.Bytes `json:"prev_randao,omitempty"`
+	BlockNumber      Uint64String  `json:"block_number,omitempty"`
+	GasLimit         Uint64String  `json:"gas_limit,omitempty"`
+	GasUsed          Uint64String  `json:"gas_used,omitempty"`
+	Timestamp        Uint64String  `json:"timestamp,omitempty"`
+	ExtraData        hexutil.Bytes `json:"extra_data,omitempty"`
+	BaseFeePerGas    Uint256       `json:"base_fee_per_gas,omitempty"`
+	BlockHash        hexutil.Bytes `json:"block_hash,omitempty"`
+	TransactionsRoot hexutil.Bytes `json:"transactions_root,omitempty"`
+	*eth.ExecutionPayloadHeader
+}
+
+func (h *ExecutionPayloadHeader) MarshalJSON() ([]byte, error) {
+	type MarshalCaller ExecutionPayloadHeader
+	return json.Marshal(&MarshalCaller{
+		ParentHash:       h.ExecutionPayloadHeader.ParentHash,
+		FeeRecipient:     h.ExecutionPayloadHeader.FeeRecipient,
+		StateRoot:        h.ExecutionPayloadHeader.StateRoot,
+		ReceiptsRoot:     h.ExecutionPayloadHeader.ReceiptsRoot,
+		LogsBloom:        h.ExecutionPayloadHeader.LogsBloom,
+		PrevRandao:       h.ExecutionPayloadHeader.PrevRandao,
+		BlockNumber:      Uint64String(h.ExecutionPayloadHeader.BlockNumber),
+		GasLimit:         Uint64String(h.ExecutionPayloadHeader.GasLimit),
+		GasUsed:          Uint64String(h.ExecutionPayloadHeader.GasUsed),
+		Timestamp:        Uint64String(h.ExecutionPayloadHeader.Timestamp),
+		ExtraData:        h.ExecutionPayloadHeader.ExtraData,
+		BaseFeePerGas:    sszBytesToUint256(h.ExecutionPayloadHeader.BaseFeePerGas),
+		BlockHash:        h.ExecutionPayloadHeader.BlockHash,
+		TransactionsRoot: h.ExecutionPayloadHeader.TransactionsRoot,
+	})
+}
+
+type ExecPayloadResponse struct {
+	Version string           `json:"version,omitempty"`
+	Data    ExecutionPayload `json:"data,omitempty"`
+}
+
+type ExecutionPayload struct {
+	ParentHash    hexutil.Bytes   `json:"parent_hash,omitempty"`
+	FeeRecipient  hexutil.Bytes   `json:"fee_recipient,omitempty"`
+	StateRoot     hexutil.Bytes   `json:"state_root,omitempty"`
+	ReceiptsRoot  hexutil.Bytes   `json:"receipts_root,omitempty"`
+	LogsBloom     hexutil.Bytes   `json:"logs_bloom,omitempty"`
+	PrevRandao    hexutil.Bytes   `json:"prev_randao,omitempty"`
+	BlockNumber   Uint64String    `json:"block_number,omitempty"`
+	GasLimit      Uint64String    `json:"gas_limit,omitempty"`
+	GasUsed       Uint64String    `json:"gas_used,omitempty"`
+	Timestamp     Uint64String    `json:"timestamp,omitempty"`
+	ExtraData     hexutil.Bytes   `json:"extra_data,omitempty"`
+	BaseFeePerGas Uint256         `json:"base_fee_per_gas,omitempty"`
+	BlockHash     hexutil.Bytes   `json:"block_hash,omitempty"`
+	Transactions  []hexutil.Bytes `json:"transactions,omitempty"`
+}
+
+func (r *ExecPayloadResponse) ToProto() (*v1.ExecutionPayload, error) {
+	return r.Data.ToProto()
+}
+
+func (p *ExecutionPayload) ToProto() (*v1.ExecutionPayload, error) {
+	txs := make([][]byte, len(p.Transactions))
+	for i := range p.Transactions {
+		txs[i] = p.Transactions[i]
+	}
+	return &v1.ExecutionPayload{
+		ParentHash:    p.ParentHash,
+		FeeRecipient:  p.FeeRecipient,
+		StateRoot:     p.StateRoot,
+		ReceiptsRoot:  p.ReceiptsRoot,
+		LogsBloom:     p.LogsBloom,
+		PrevRandao:    p.PrevRandao,
+		BlockNumber:   uint64(p.BlockNumber),
+		GasLimit:      uint64(p.GasLimit),
+		GasUsed:       uint64(p.GasUsed),
+		Timestamp:     uint64(p.Timestamp),
+		ExtraData:     p.ExtraData,
+		BaseFeePerGas: p.BaseFeePerGas.SSZBytes(),
+		BlockHash:     p.BlockHash,
+		Transactions:  txs,
+	}, nil
+}
+
+type SignedBlindedBeaconBlockBellatrix struct {
+	*eth.SignedBlindedBeaconBlockBellatrix
+}
+
+type BlindedBeaconBlockBellatrix struct {
+	*eth.BlindedBeaconBlockBellatrix
+}
+
+type BlindedBeaconBlockBodyBellatrix struct {
+	*eth.BlindedBeaconBlockBodyBellatrix
+}
+
+func (r *SignedBlindedBeaconBlockBellatrix) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Message   *BlindedBeaconBlockBellatrix `json:"message,omitempty"`
+		Signature hexutil.Bytes                `json:"signature,omitempty"`
+	}{
+		Message:   &BlindedBeaconBlockBellatrix{r.SignedBlindedBeaconBlockBellatrix.Block},
+		Signature: r.SignedBlindedBeaconBlockBellatrix.Signature,
+	})
+}
+
+func (b *BlindedBeaconBlockBellatrix) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Slot          string                           `json:"slot"`
+		ProposerIndex string                           `json:"proposer_index,omitempty"`
+		ParentRoot    hexutil.Bytes                    `json:"parent_root,omitempty"`
+		StateRoot     hexutil.Bytes                    `json:"state_root,omitempty"`
+		Body          *BlindedBeaconBlockBodyBellatrix `json:"body,omitempty"`
+	}{
+		Slot:          fmt.Sprintf("%d", b.Slot),
+		ProposerIndex: fmt.Sprintf("%d", b.ProposerIndex),
+		ParentRoot:    b.ParentRoot,
+		StateRoot:     b.StateRoot,
+		Body:          &BlindedBeaconBlockBodyBellatrix{b.BlindedBeaconBlockBellatrix.Body},
+	})
+}
+
+type ProposerSlashing struct {
+	*eth.ProposerSlashing
+}
+
+func (s *ProposerSlashing) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		SignedHeader1 *SignedBeaconBlockHeader `json:"signed_header_1,omitempty"`
+		SignedHeader2 *SignedBeaconBlockHeader `json:"signed_header_2,omitempty"`
+	}{
+		SignedHeader1: &SignedBeaconBlockHeader{s.ProposerSlashing.Header_1},
+		SignedHeader2: &SignedBeaconBlockHeader{s.ProposerSlashing.Header_2},
+	})
+}
+
+type SignedBeaconBlockHeader struct {
+	*eth.SignedBeaconBlockHeader
+}
+
+func (h *SignedBeaconBlockHeader) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Header    *BeaconBlockHeader `json:"message,omitempty"`
+		Signature hexutil.Bytes      `json:"signature,omitempty"`
+	}{
+		Header:    &BeaconBlockHeader{h.SignedBeaconBlockHeader.Header},
+		Signature: h.SignedBeaconBlockHeader.Signature,
+	})
+}
+
+type BeaconBlockHeader struct {
+	*eth.BeaconBlockHeader
+}
+
+func (h *BeaconBlockHeader) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Slot          string        `json:"slot,omitempty"`
+		ProposerIndex string        `json:"proposer_index,omitempty"`
+		ParentRoot    hexutil.Bytes `json:"parent_root,omitempty"`
+		StateRoot     hexutil.Bytes `json:"state_root,omitempty"`
+		BodyRoot      hexutil.Bytes `json:"body_root,omitempty"`
+	}{
+		Slot:          fmt.Sprintf("%d", h.BeaconBlockHeader.Slot),
+		ProposerIndex: fmt.Sprintf("%d", h.BeaconBlockHeader.ProposerIndex),
+		ParentRoot:    h.BeaconBlockHeader.ParentRoot,
+		StateRoot:     h.BeaconBlockHeader.StateRoot,
+		BodyRoot:      h.BeaconBlockHeader.BodyRoot,
+	})
+}
+
+type IndexedAttestation struct {
+	*eth.IndexedAttestation
+}
+
+func (a *IndexedAttestation) MarshalJSON() ([]byte, error) {
+	indices := make([]string, len(a.IndexedAttestation.AttestingIndices))
+	for i := range a.IndexedAttestation.AttestingIndices {
+		indices[i] = fmt.Sprintf("%d", a.AttestingIndices[i])
+	}
+	return json.Marshal(struct {
+		AttestingIndices []string         `json:"attesting_indices,omitempty"`
+		Data             *AttestationData `json:"data,omitempty"`
+		Signature        hexutil.Bytes    `json:"signature,omitempty"`
+	}{
+		AttestingIndices: indices,
+		Data:             &AttestationData{a.IndexedAttestation.Data},
+		Signature:        a.IndexedAttestation.Signature,
+	})
+}
+
+type AttesterSlashing struct {
+	*eth.AttesterSlashing
+}
+
+func (s *AttesterSlashing) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Attestation1 *IndexedAttestation `json:"attestation_1,omitempty"`
+		Attestation2 *IndexedAttestation `json:"attestation_2,omitempty"`
+	}{
+		Attestation1: &IndexedAttestation{s.Attestation_1},
+		Attestation2: &IndexedAttestation{s.Attestation_2},
+	})
+}
+
+type Checkpoint struct {
+	*eth.Checkpoint
+}
+
+func (c *Checkpoint) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Epoch string        `json:"epoch,omitempty"`
+		Root  hexutil.Bytes `json:"root,omitempty"`
+	}{
+		Epoch: fmt.Sprintf("%d", c.Checkpoint.Epoch),
+		Root:  c.Checkpoint.Root,
+	})
+}
+
+type AttestationData struct {
+	*eth.AttestationData
+}
+
+func (a *AttestationData) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Slot            string        `json:"slot,omitempty"`
+		Index           string        `json:"index,omitempty"`
+		BeaconBlockRoot hexutil.Bytes `json:"beacon_block_root,omitempty"`
+		Source          *Checkpoint   `json:"source,omitempty"`
+		Target          *Checkpoint   `json:"target,omitempty"`
+	}{
+		Slot:            fmt.Sprintf("%d", a.AttestationData.Slot),
+		Index:           fmt.Sprintf("%d", a.AttestationData.CommitteeIndex),
+		BeaconBlockRoot: a.AttestationData.BeaconBlockRoot,
+		Source:          &Checkpoint{a.AttestationData.Source},
+		Target:          &Checkpoint{a.AttestationData.Target},
+	})
+}
+
+type Attestation struct {
+	*eth.Attestation
+}
+
+func (a *Attestation) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		AggregationBits hexutil.Bytes    `json:"aggregation_bits,omitempty"`
+		Data            *AttestationData `json:"data,omitempty"`
+		Signature       hexutil.Bytes    `json:"signature,omitempty" ssz-size:"96"`
+	}{
+		AggregationBits: hexutil.Bytes(a.Attestation.AggregationBits),
+		Data:            &AttestationData{a.Attestation.Data},
+		Signature:       a.Attestation.Signature,
+	})
+}
+
+type DepositData struct {
+	*eth.Deposit_Data
+}
+
+func (d *DepositData) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		PublicKey             hexutil.Bytes `json:"pubkey,omitempty"`
+		WithdrawalCredentials hexutil.Bytes `json:"withdrawal_credentials,omitempty"`
+		Amount                string        `json:"amount,omitempty"`
+		Signature             hexutil.Bytes `json:"signature,omitempty"`
+	}{
+		PublicKey:             d.PublicKey,
+		WithdrawalCredentials: d.WithdrawalCredentials,
+		Amount:                fmt.Sprintf("%d", d.Amount),
+		Signature:             d.Signature,
+	})
+}
+
+type Deposit struct {
+	*eth.Deposit
+}
+
+func (d *Deposit) MarshalJSON() ([]byte, error) {
+	proof := make([]hexutil.Bytes, len(d.Proof))
+	for i := range d.Proof {
+		proof[i] = d.Proof[i]
+	}
+	return json.Marshal(struct {
+		Proof []hexutil.Bytes `json:"proof"`
+		Data  *DepositData    `json:"data"`
+	}{
+		Proof: proof,
+		Data:  &DepositData{Deposit_Data: d.Deposit.Data},
+	})
+}
+
+type SignedVoluntaryExit struct {
+	*eth.SignedVoluntaryExit
+}
+
+func (sve *SignedVoluntaryExit) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Message   *VoluntaryExit `json:"message,omitempty"`
+		Signature hexutil.Bytes  `json:"signature,omitempty"`
+	}{
+		Signature: sve.SignedVoluntaryExit.Signature,
+		Message:   &VoluntaryExit{sve.SignedVoluntaryExit.Exit},
+	})
+}
+
+type VoluntaryExit struct {
+	*eth.VoluntaryExit
+}
+
+func (ve *VoluntaryExit) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Epoch          string `json:"epoch,omitempty"`
+		ValidatorIndex string `json:"validator_index,omitempty"`
+	}{
+		Epoch:          fmt.Sprintf("%d", ve.Epoch),
+		ValidatorIndex: fmt.Sprintf("%d", ve.ValidatorIndex),
+	})
+}
+
+type SyncAggregate struct {
+	*eth.SyncAggregate
+}
+
+func (s *SyncAggregate) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		SyncCommitteeBits      hexutil.Bytes `json:"sync_committee_bits,omitempty"`
+		SyncCommitteeSignature hexutil.Bytes `json:"sync_committee_signature,omitempty"`
+	}{
+		SyncCommitteeBits:      hexutil.Bytes(s.SyncAggregate.SyncCommitteeBits),
+		SyncCommitteeSignature: s.SyncAggregate.SyncCommitteeSignature,
+	})
+}
+
+type Eth1Data struct {
+	*eth.Eth1Data
+}
+
+func (e *Eth1Data) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		DepositRoot  hexutil.Bytes `json:"deposit_root,omitempty"`
+		DepositCount string        `json:"deposit_count,omitempty"`
+		BlockHash    hexutil.Bytes `json:"block_hash,omitempty"`
+	}{
+		DepositRoot:  e.DepositRoot,
+		DepositCount: fmt.Sprintf("%d", e.DepositCount),
+		BlockHash:    e.BlockHash,
+	})
+}
+
+func (b *BlindedBeaconBlockBodyBellatrix) MarshalJSON() ([]byte, error) {
+	sve := make([]*SignedVoluntaryExit, len(b.BlindedBeaconBlockBodyBellatrix.VoluntaryExits))
+	for i := range b.BlindedBeaconBlockBodyBellatrix.VoluntaryExits {
+		sve[i] = &SignedVoluntaryExit{SignedVoluntaryExit: b.BlindedBeaconBlockBodyBellatrix.VoluntaryExits[i]}
+	}
+	deps := make([]*Deposit, len(b.BlindedBeaconBlockBodyBellatrix.Deposits))
+	for i := range b.BlindedBeaconBlockBodyBellatrix.Deposits {
+		deps[i] = &Deposit{Deposit: b.BlindedBeaconBlockBodyBellatrix.Deposits[i]}
+	}
+	atts := make([]*Attestation, len(b.BlindedBeaconBlockBodyBellatrix.Attestations))
+	for i := range b.BlindedBeaconBlockBodyBellatrix.Attestations {
+		atts[i] = &Attestation{Attestation: b.BlindedBeaconBlockBodyBellatrix.Attestations[i]}
+	}
+	atsl := make([]*AttesterSlashing, len(b.BlindedBeaconBlockBodyBellatrix.AttesterSlashings))
+	for i := range b.BlindedBeaconBlockBodyBellatrix.AttesterSlashings {
+		atsl[i] = &AttesterSlashing{AttesterSlashing: b.BlindedBeaconBlockBodyBellatrix.AttesterSlashings[i]}
+	}
+	pros := make([]*ProposerSlashing, len(b.BlindedBeaconBlockBodyBellatrix.ProposerSlashings))
+	for i := range b.BlindedBeaconBlockBodyBellatrix.ProposerSlashings {
+		pros[i] = &ProposerSlashing{ProposerSlashing: b.BlindedBeaconBlockBodyBellatrix.ProposerSlashings[i]}
+	}
+	return json.Marshal(struct {
+		RandaoReveal           hexutil.Bytes           `json:"randao_reveal,omitempty"`
+		Eth1Data               *Eth1Data               `json:"eth1_data,omitempty"`
+		Graffiti               hexutil.Bytes           `json:"graffiti,omitempty"`
+		ProposerSlashings      []*ProposerSlashing     `json:"proposer_slashings,omitempty"`
+		AttesterSlashings      []*AttesterSlashing     `json:"attester_slashings,omitempty"`
+		Attestations           []*Attestation          `json:"attestations,omitempty"`
+		Deposits               []*Deposit              `json:"deposits,omitempty"`
+		VoluntaryExits         []*SignedVoluntaryExit  `json:"voluntary_exits,omitempty"`
+		SyncAggregate          *SyncAggregate          `json:"sync_aggregate,omitempty"`
+		ExecutionPayloadHeader *ExecutionPayloadHeader `json:"execution_payload_header,omitempty"`
+	}{
+		RandaoReveal:           b.RandaoReveal,
+		Eth1Data:               &Eth1Data{b.BlindedBeaconBlockBodyBellatrix.Eth1Data},
+		Graffiti:               b.BlindedBeaconBlockBodyBellatrix.Graffiti,
+		ProposerSlashings:      pros,
+		AttesterSlashings:      atsl,
+		Attestations:           atts,
+		Deposits:               deps,
+		VoluntaryExits:         sve,
+		SyncAggregate:          &SyncAggregate{b.BlindedBeaconBlockBodyBellatrix.SyncAggregate},
+		ExecutionPayloadHeader: &ExecutionPayloadHeader{ExecutionPayloadHeader: b.BlindedBeaconBlockBodyBellatrix.ExecutionPayloadHeader},
+	})
+}

api/client/builder/types_test.go

@@ -0,0 +1,693 @@
+package builder
+
+import (
+	"encoding/json"
+	"fmt"
+	"math/big"
+	"os"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/prysmaticlabs/go-bitfield"
+	v1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
+	eth "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/testing/require"
+)
+
+func ezDecode(t *testing.T, s string) []byte {
+	v, err := hexutil.Decode(s)
+	require.NoError(t, err)
+	return v
+}
+
+func TestSignedValidatorRegistration_MarshalJSON(t *testing.T) {
+	svr := &eth.SignedValidatorRegistrationV1{
+		Message: &eth.ValidatorRegistrationV1{
+			FeeRecipient: make([]byte, 20),
+			GasLimit:     0,
+			Timestamp:    0,
+			Pubkey:       make([]byte, 48),
+		},
+		Signature: make([]byte, 96),
+	}
+	je, err := json.Marshal(&SignedValidatorRegistration{SignedValidatorRegistrationV1: svr})
+	require.NoError(t, err)
+	// decode with a struct w/ plain strings so we can check the string encoding of the hex fields
+	un := struct {
+		Message struct {
+			FeeRecipient string `json:"fee_recipient"`
+			Pubkey       string `json:"pubkey"`
+		} `json:"message"`
+		Signature string `json:"signature"`
+	}{}
+	require.NoError(t, json.Unmarshal(je, &un))
+	require.Equal(t, "0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", un.Signature)
+	require.Equal(t, "0x0000000000000000000000000000000000000000", un.Message.FeeRecipient)
+	require.Equal(t, "0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", un.Message.Pubkey)
+}
+
+var testExampleHeaderResponse = `{
+  "version": "bellatrix",
+  "data": {
+    "message": {
+      "header": {
+        "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+        "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+        "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "block_number": "1",
+        "gas_limit": "1",
+        "gas_used": "1",
+        "timestamp": "1",
+        "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "base_fee_per_gas": "452312848583266388373324160190187140051835877600158453279131187530910662656",
+        "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "transactions_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+      },
+      "value": "652312848583266388373324160190187140051835877600158453279131187530910662656",
+      "pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+    },
+    "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+  }
+}`
+
+func TestExecutionHeaderResponseUnmarshal(t *testing.T) {
+	hr := &ExecHeaderResponse{}
+	require.NoError(t, json.Unmarshal([]byte(testExampleHeaderResponse), hr))
+	cases := []struct {
+		expected string
+		actual   string
+		name     string
+	}{
+		{
+			expected: "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+			actual:   hexutil.Encode(hr.Data.Signature),
+			name:     "Signature",
+		},
+		{
+			expected: "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
+			actual:   hexutil.Encode(hr.Data.Message.Pubkey),
+			name:     "ExecHeaderResponse.Pubkey",
+		},
+		{
+			expected: "652312848583266388373324160190187140051835877600158453279131187530910662656",
+			actual:   hr.Data.Message.Value.String(),
+			name:     "ExecHeaderResponse.Value",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(hr.Data.Message.Header.ParentHash),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.ParentHash",
+		},
+		{
+			expected: "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+			actual:   hexutil.Encode(hr.Data.Message.Header.FeeRecipient),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.FeeRecipient",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(hr.Data.Message.Header.StateRoot),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.StateRoot",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(hr.Data.Message.Header.ReceiptsRoot),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.ReceiptsRoot",
+		},
+		{
+			expected: "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+			actual:   hexutil.Encode(hr.Data.Message.Header.LogsBloom),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.LogsBloom",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(hr.Data.Message.Header.PrevRandao),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.PrevRandao",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", hr.Data.Message.Header.BlockNumber),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.BlockNumber",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", hr.Data.Message.Header.GasLimit),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.GasLimit",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", hr.Data.Message.Header.GasUsed),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.GasUsed",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", hr.Data.Message.Header.Timestamp),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.Timestamp",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(hr.Data.Message.Header.ExtraData),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.ExtraData",
+		},
+		{
+			expected: "452312848583266388373324160190187140051835877600158453279131187530910662656",
+			actual:   fmt.Sprintf("%d", hr.Data.Message.Header.BaseFeePerGas),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.BaseFeePerGas",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(hr.Data.Message.Header.BlockHash),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.BlockHash",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(hr.Data.Message.Header.TransactionsRoot),
+			name:     "ExecHeaderResponse.ExecutionPayloadHeader.TransactionsRoot",
+		},
+	}
+	for _, c := range cases {
+		require.Equal(t, c.expected, c.actual, fmt.Sprintf("unexpected value for field %s", c.name))
+	}
+}
+
+func TestExecutionHeaderResponseToProto(t *testing.T) {
+	bfpg := stringToUint256("452312848583266388373324160190187140051835877600158453279131187530910662656")
+	v := stringToUint256("652312848583266388373324160190187140051835877600158453279131187530910662656")
+	hr := &ExecHeaderResponse{}
+	require.NoError(t, json.Unmarshal([]byte(testExampleHeaderResponse), hr))
+	p, err := hr.ToProto()
+	require.NoError(t, err)
+	signature, err := hexutil.Decode("0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505")
+	require.NoError(t, err)
+	pubkey, err := hexutil.Decode("0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a")
+	require.NoError(t, err)
+	parentHash, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	feeRecipient, err := hexutil.Decode("0xabcf8e0d4e9587369b2301d0790347320302cc09")
+	require.NoError(t, err)
+	stateRoot, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	receiptsRoot, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	logsBloom, err := hexutil.Decode("0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
+	require.NoError(t, err)
+	prevRandao, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	extraData, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	blockHash, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	txRoot, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+
+	expected := &eth.SignedBuilderBid{
+		Message: &eth.BuilderBid{
+			Header: &eth.ExecutionPayloadHeader{
+				ParentHash:       parentHash,
+				FeeRecipient:     feeRecipient,
+				StateRoot:        stateRoot,
+				ReceiptsRoot:     receiptsRoot,
+				LogsBloom:        logsBloom,
+				PrevRandao:       prevRandao,
+				BlockNumber:      1,
+				GasLimit:         1,
+				GasUsed:          1,
+				Timestamp:        1,
+				ExtraData:        extraData,
+				BaseFeePerGas:    bfpg.SSZBytes(),
+				BlockHash:        blockHash,
+				TransactionsRoot: txRoot,
+			},
+			Value:  v.SSZBytes(),
+			Pubkey: pubkey,
+		},
+		Signature: signature,
+	}
+	require.DeepEqual(t, expected, p)
+}
+
+var testExampleExecutionPayload = `{
+  "version": "bellatrix",
+  "data": {
+    "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+    "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+    "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+    "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+    "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+    "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+    "block_number": "1",
+    "gas_limit": "1",
+    "gas_used": "1",
+    "timestamp": "1",
+    "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+    "base_fee_per_gas": "452312848583266388373324160190187140051835877600158453279131187530910662656",
+    "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+    "transactions": [
+      "0x02f878831469668303f51d843b9ac9f9843b9aca0082520894c93269b73096998db66be0441e836d873535cb9c8894a19041886f000080c001a031cc29234036afbf9a1fb9476b463367cb1f957ac0b919b69bbc798436e604aaa018c4e9c3914eb27aadd0b91e10b18655739fcf8c1fc398763a9f1beecb8ddc86"
+    ]
+  }
+}`
+
+func TestExecutionPayloadResponseUnmarshal(t *testing.T) {
+	epr := &ExecPayloadResponse{}
+	require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayload), epr))
+	cases := []struct {
+		expected string
+		actual   string
+		name     string
+	}{
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.ParentHash),
+			name:     "ExecPayloadResponse.ExecutionPayload.ParentHash",
+		},
+		{
+			expected: "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+			actual:   hexutil.Encode(epr.Data.FeeRecipient),
+			name:     "ExecPayloadResponse.ExecutionPayload.FeeRecipient",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.StateRoot),
+			name:     "ExecPayloadResponse.ExecutionPayload.StateRoot",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.ReceiptsRoot),
+			name:     "ExecPayloadResponse.ExecutionPayload.ReceiptsRoot",
+		},
+		{
+			expected: "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+			actual:   hexutil.Encode(epr.Data.LogsBloom),
+			name:     "ExecPayloadResponse.ExecutionPayload.LogsBloom",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.PrevRandao),
+			name:     "ExecPayloadResponse.ExecutionPayload.PrevRandao",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", epr.Data.BlockNumber),
+			name:     "ExecPayloadResponse.ExecutionPayload.BlockNumber",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", epr.Data.GasLimit),
+			name:     "ExecPayloadResponse.ExecutionPayload.GasLimit",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", epr.Data.GasUsed),
+			name:     "ExecPayloadResponse.ExecutionPayload.GasUsed",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", epr.Data.Timestamp),
+			name:     "ExecPayloadResponse.ExecutionPayload.Timestamp",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.ExtraData),
+			name:     "ExecPayloadResponse.ExecutionPayload.ExtraData",
+		},
+		{
+			expected: "452312848583266388373324160190187140051835877600158453279131187530910662656",
+			actual:   fmt.Sprintf("%d", epr.Data.BaseFeePerGas),
+			name:     "ExecPayloadResponse.ExecutionPayload.BaseFeePerGas",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.BlockHash),
+			name:     "ExecPayloadResponse.ExecutionPayload.BlockHash",
+		},
+	}
+	for _, c := range cases {
+		require.Equal(t, c.expected, c.actual, fmt.Sprintf("unexpected value for field %s", c.name))
+	}
+	require.Equal(t, 1, len(epr.Data.Transactions))
+	txHash := "0x02f878831469668303f51d843b9ac9f9843b9aca0082520894c93269b73096998db66be0441e836d873535cb9c8894a19041886f000080c001a031cc29234036afbf9a1fb9476b463367cb1f957ac0b919b69bbc798436e604aaa018c4e9c3914eb27aadd0b91e10b18655739fcf8c1fc398763a9f1beecb8ddc86"
+	require.Equal(t, txHash, hexutil.Encode(epr.Data.Transactions[0]))
+}
+
+func TestExecutionPayloadResponseToProto(t *testing.T) {
+	hr := &ExecPayloadResponse{}
+	require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayload), hr))
+	p, err := hr.ToProto()
+	require.NoError(t, err)
+
+	parentHash, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	feeRecipient, err := hexutil.Decode("0xabcf8e0d4e9587369b2301d0790347320302cc09")
+	require.NoError(t, err)
+	stateRoot, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	receiptsRoot, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	logsBloom, err := hexutil.Decode("0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
+	require.NoError(t, err)
+	prevRandao, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	extraData, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	blockHash, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+
+	tx, err := hexutil.Decode("0x02f878831469668303f51d843b9ac9f9843b9aca0082520894c93269b73096998db66be0441e836d873535cb9c8894a19041886f000080c001a031cc29234036afbf9a1fb9476b463367cb1f957ac0b919b69bbc798436e604aaa018c4e9c3914eb27aadd0b91e10b18655739fcf8c1fc398763a9f1beecb8ddc86")
+	require.NoError(t, err)
+	txList := [][]byte{tx}
+
+	bfpg := stringToUint256("452312848583266388373324160190187140051835877600158453279131187530910662656")
+	expected := &v1.ExecutionPayload{
+		ParentHash:    parentHash,
+		FeeRecipient:  feeRecipient,
+		StateRoot:     stateRoot,
+		ReceiptsRoot:  receiptsRoot,
+		LogsBloom:     logsBloom,
+		PrevRandao:    prevRandao,
+		BlockNumber:   1,
+		GasLimit:      1,
+		GasUsed:       1,
+		Timestamp:     1,
+		ExtraData:     extraData,
+		BaseFeePerGas: bfpg.SSZBytes(),
+		BlockHash:     blockHash,
+		Transactions:  txList,
+	}
+	require.DeepEqual(t, expected, p)
+}
+
+func pbEth1Data(t *testing.T) *eth.Eth1Data {
+	return &eth.Eth1Data{
+		DepositRoot:  make([]byte, 32),
+		DepositCount: 23,
+		BlockHash:    make([]byte, 32),
+	}
+}
+
+func TestEth1DataMarshal(t *testing.T) {
+	ed := &Eth1Data{
+		Eth1Data: pbEth1Data(t),
+	}
+	b, err := json.Marshal(ed)
+	require.NoError(t, err)
+	expected := `{"deposit_root":"0x0000000000000000000000000000000000000000000000000000000000000000","deposit_count":"23","block_hash":"0x0000000000000000000000000000000000000000000000000000000000000000"}`
+	require.Equal(t, expected, string(b))
+}
+
+func pbSyncAggregate() *eth.SyncAggregate {
+	return &eth.SyncAggregate{
+		SyncCommitteeSignature: make([]byte, 48),
+		SyncCommitteeBits:      bitfield.Bitvector512{0x01},
+	}
+}
+
+func TestSyncAggregate_MarshalJSON(t *testing.T) {
+	sa := &SyncAggregate{pbSyncAggregate()}
+	b, err := json.Marshal(sa)
+	require.NoError(t, err)
+	expected := `{"sync_committee_bits":"0x01","sync_committee_signature":"0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"}`
+	require.Equal(t, expected, string(b))
+}
+
+func pbDeposit(t *testing.T) *eth.Deposit {
+	return &eth.Deposit{
+		Proof: [][]byte{ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")},
+		Data: &eth.Deposit_Data{
+			PublicKey:             ezDecode(t, "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"),
+			WithdrawalCredentials: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+			Amount:                1,
+			Signature:             ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+		},
+	}
+}
+
+func TestDeposit_MarshalJSON(t *testing.T) {
+	d := &Deposit{
+		Deposit: pbDeposit(t),
+	}
+	b, err := json.Marshal(d)
+	require.NoError(t, err)
+	expected := `{"proof":["0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"],"data":{"pubkey":"0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a","withdrawal_credentials":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","amount":"1","signature":"0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"}}`
+	require.Equal(t, expected, string(b))
+}
+
+func pbSignedVoluntaryExit(t *testing.T) *eth.SignedVoluntaryExit {
+	return &eth.SignedVoluntaryExit{
+		Exit: &eth.VoluntaryExit{
+			Epoch:          1,
+			ValidatorIndex: 1,
+		},
+		Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+	}
+}
+
+func TestVoluntaryExit(t *testing.T) {
+	ve := &SignedVoluntaryExit{
+		SignedVoluntaryExit: pbSignedVoluntaryExit(t),
+	}
+	b, err := json.Marshal(ve)
+	require.NoError(t, err)
+	expected := `{"message":{"epoch":"1","validator_index":"1"},"signature":"0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"}`
+	require.Equal(t, expected, string(b))
+}
+
+func pbAttestation(t *testing.T) *eth.Attestation {
+	return &eth.Attestation{
+		AggregationBits: bitfield.Bitlist{0x01},
+		Data: &eth.AttestationData{
+			Slot:            1,
+			CommitteeIndex:  1,
+			BeaconBlockRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+			Source: &eth.Checkpoint{
+				Epoch: 1,
+				Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+			},
+			Target: &eth.Checkpoint{
+				Epoch: 1,
+				Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+			},
+		},
+		Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+	}
+}
+
+func TestAttestationMarshal(t *testing.T) {
+	a := &Attestation{
+		Attestation: pbAttestation(t),
+	}
+	b, err := json.Marshal(a)
+	require.NoError(t, err)
+	expected := `{"aggregation_bits":"0x01","data":{"slot":"1","index":"1","beacon_block_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","source":{"epoch":"1","root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"},"target":{"epoch":"1","root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"}},"signature":"0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"}`
+	require.Equal(t, expected, string(b))
+}
+
+func pbAttesterSlashing(t *testing.T) *eth.AttesterSlashing {
+	return &eth.AttesterSlashing{
+		Attestation_1: &eth.IndexedAttestation{
+			AttestingIndices: []uint64{1},
+			Signature:        ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+			Data: &eth.AttestationData{
+				Slot:            1,
+				CommitteeIndex:  1,
+				BeaconBlockRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				Source: &eth.Checkpoint{
+					Epoch: 1,
+					Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				},
+				Target: &eth.Checkpoint{
+					Epoch: 1,
+					Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				},
+			},
+		},
+		Attestation_2: &eth.IndexedAttestation{
+			AttestingIndices: []uint64{1},
+			Signature:        ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+			Data: &eth.AttestationData{
+				Slot:            1,
+				CommitteeIndex:  1,
+				BeaconBlockRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				Source: &eth.Checkpoint{
+					Epoch: 1,
+					Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				},
+				Target: &eth.Checkpoint{
+					Epoch: 1,
+					Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				},
+			},
+		},
+	}
+}
+
+func TestAttesterSlashing_MarshalJSON(t *testing.T) {
+	as := &AttesterSlashing{
+		AttesterSlashing: pbAttesterSlashing(t),
+	}
+	b, err := json.Marshal(as)
+	require.NoError(t, err)
+	expected := `{"attestation_1":{"attesting_indices":["1"],"data":{"slot":"1","index":"1","beacon_block_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","source":{"epoch":"1","root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"},"target":{"epoch":"1","root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"}},"signature":"0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"},"attestation_2":{"attesting_indices":["1"],"data":{"slot":"1","index":"1","beacon_block_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","source":{"epoch":"1","root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"},"target":{"epoch":"1","root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"}},"signature":"0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"}}`
+	require.Equal(t, expected, string(b))
+}
+
+func pbProposerSlashing(t *testing.T) *eth.ProposerSlashing {
+	return &eth.ProposerSlashing{
+		Header_1: &eth.SignedBeaconBlockHeader{
+			Header: &eth.BeaconBlockHeader{
+				Slot:          1,
+				ProposerIndex: 1,
+				ParentRoot:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				StateRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				BodyRoot:      ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+			},
+			Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+		},
+		Header_2: &eth.SignedBeaconBlockHeader{
+			Header: &eth.BeaconBlockHeader{
+				Slot:          1,
+				ProposerIndex: 1,
+				ParentRoot:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				StateRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				BodyRoot:      ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+			},
+			Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+		},
+	}
+}
+
+func TestProposerSlashings(t *testing.T) {
+	ps := &ProposerSlashing{ProposerSlashing: pbProposerSlashing(t)}
+	b, err := json.Marshal(ps)
+	require.NoError(t, err)
+	expected := `{"signed_header_1":{"message":{"slot":"1","proposer_index":"1","parent_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","state_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","body_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"},"signature":"0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"},"signed_header_2":{"message":{"slot":"1","proposer_index":"1","parent_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","state_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","body_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"},"signature":"0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"}}`
+	require.Equal(t, expected, string(b))
+}
+
+func pbExecutionPayloadHeader(t *testing.T) *eth.ExecutionPayloadHeader {
+	bfpg := stringToUint256("452312848583266388373324160190187140051835877600158453279131187530910662656")
+	return &eth.ExecutionPayloadHeader{
+		ParentHash:       ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		FeeRecipient:     ezDecode(t, "0xabcf8e0d4e9587369b2301d0790347320302cc09"),
+		StateRoot:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		ReceiptsRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		LogsBloom:        ezDecode(t, "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
+		PrevRandao:       ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		BlockNumber:      1,
+		GasLimit:         1,
+		GasUsed:          1,
+		Timestamp:        1,
+		ExtraData:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		BaseFeePerGas:    bfpg.SSZBytes(),
+		BlockHash:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		TransactionsRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+	}
+}
+
+func TestExecutionPayloadHeader_MarshalJSON(t *testing.T) {
+	h := &ExecutionPayloadHeader{
+		ExecutionPayloadHeader: pbExecutionPayloadHeader(t),
+	}
+	b, err := json.Marshal(h)
+	require.NoError(t, err)
+	expected := `{"parent_hash":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","fee_recipient":"0xabcf8e0d4e9587369b2301d0790347320302cc09","state_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","receipts_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","logs_bloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000","prev_randao":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","block_number":"1","gas_limit":"1","gas_used":"1","timestamp":"1","extra_data":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","base_fee_per_gas":"452312848583266388373324160190187140051835877600158453279131187530910662656","block_hash":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","transactions_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"}`
+	require.Equal(t, expected, string(b))
+}
+
+var testBuilderBid = `{
+    "version":"bellatrix",
+	"data":{
+		"message":{
+			"header":{
+				"parent_hash":"0xa0513a503d5bd6e89a144c3268e5b7e9da9dbf63df125a360e3950a7d0d67131",
+				"fee_recipient":"0xdfb434922631787e43725c6b926e989875125751",
+				"state_root":"0xca3149fa9e37db08d1cd49c9061db1002ef1cd58db2210f2115c8c989b2bdf45",
+				"receipts_root":"0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+				"logs_bloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+				"prev_randao":"0xc2fa210081542a87f334b7b14a2da3275e4b281dd77b007bcfcb10e34c42052e",
+				"block_number":"1",
+				"gas_limit":"10000000",
+				"gas_used":"0",
+				"timestamp":"4660",
+				"extra_data":"0x",
+				"base_fee_per_gas":"7",
+				"block_hash":"0x10746fa06c248e7eacd4ff8ad8b48a826c227387ee31a6aa5eb4d83ddad34f07",
+				"transactions_root":"0x7ffe241ea60187fdb0187bfa22de35d1f9bed7ab061d9401fd47e34a54fbede1"
+			},
+			"value":"452312848583266388373324160190187140051835877600158453279131187530910662656",
+			"pubkey":"0x8645866c95cbc2e08bc77ccad473540eddf4a1f51a2a8edc8d7a673824218f7f68fe565f1ab38dadd5c855b45bbcec95"
+		},
+		"signature":"0x9183ebc1edf9c3ab2bbd7abdc3b59c6b249d6647b5289a97eea36d9d61c47f12e283f64d928b1e7f5b8a5182b714fa921954678ea28ca574f5f232b2f78cf8900915a2993b396e3471e0655291fec143a300d41408f66478c8208e0f9be851dc"
+	}
+}`
+
+func TestBuilderBidUnmarshalUint256(t *testing.T) {
+	base10 := "452312848583266388373324160190187140051835877600158453279131187530910662656"
+	var expectedValue big.Int
+	require.NoError(t, expectedValue.UnmarshalText([]byte(base10)))
+	r := &ExecHeaderResponse{}
+	require.NoError(t, json.Unmarshal([]byte(testBuilderBid), r))
+	//require.Equal(t, expectedValue, r.Data.Message.Value)
+	marshaled := r.Data.Message.Value.String()
+	require.Equal(t, base10, marshaled)
+	require.Equal(t, 0, expectedValue.Cmp(r.Data.Message.Value.Int))
+}
+
+func TestMathBigUnmarshal(t *testing.T) {
+	base10 := "452312848583266388373324160190187140051835877600158453279131187530910662656"
+	var expectedValue big.Int
+	require.NoError(t, expectedValue.UnmarshalText([]byte(base10)))
+	marshaled, err := expectedValue.MarshalText()
+	require.NoError(t, err)
+	require.Equal(t, base10, string(marshaled))
+
+	var u256 Uint256
+	require.NoError(t, u256.UnmarshalText([]byte("452312848583266388373324160190187140051835877600158453279131187530910662656")))
+}
+
+func TestUint256Unmarshal(t *testing.T) {
+	base10 := "452312848583266388373324160190187140051835877600158453279131187530910662656"
+	bi := new(big.Int)
+	bi, ok := bi.SetString(base10, 10)
+	require.Equal(t, true, ok)
+	s := struct {
+		BigNumber Uint256 `json:"big_number"`
+	}{
+		BigNumber: Uint256{Int: bi},
+	}
+	m, err := json.Marshal(s)
+	require.NoError(t, err)
+	expected := `{"big_number":"452312848583266388373324160190187140051835877600158453279131187530910662656"}`
+	require.Equal(t, expected, string(m))
+}
+
+func TestMarshalBlindedBeaconBlockBodyBellatrix(t *testing.T) {
+	expected, err := os.ReadFile("testdata/blinded-block.json")
+	require.NoError(t, err)
+	b := &BlindedBeaconBlockBellatrix{BlindedBeaconBlockBellatrix: &eth.BlindedBeaconBlockBellatrix{
+		Slot:          1,
+		ProposerIndex: 1,
+		ParentRoot:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		StateRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		Body: &eth.BlindedBeaconBlockBodyBellatrix{
+			RandaoReveal:           ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+			Eth1Data:               pbEth1Data(t),
+			Graffiti:               ezDecode(t, "0xdeadbeefc0ffee"),
+			ProposerSlashings:      []*eth.ProposerSlashing{pbProposerSlashing(t)},
+			AttesterSlashings:      []*eth.AttesterSlashing{pbAttesterSlashing(t)},
+			Attestations:           []*eth.Attestation{pbAttestation(t)},
+			Deposits:               []*eth.Deposit{pbDeposit(t)},
+			VoluntaryExits:         []*eth.SignedVoluntaryExit{pbSignedVoluntaryExit(t)},
+			SyncAggregate:          pbSyncAggregate(),
+			ExecutionPayloadHeader: pbExecutionPayloadHeader(t),
+		},
+	}}
+	m, err := json.Marshal(b)
+	require.NoError(t, err)
+	// string error output is easier to deal with
+	// -1 end slice index on expected is to get rid of trailing newline
+	// if you update this fixture and this test breaks, you probably removed the trailing newline
+	require.Equal(t, string(expected[0:len(expected)-1]), string(m))
+}

beacon-chain/blockchain/BUILD.bazel

@@ -64,6 +64,7 @@ go_library(
         "//config/features:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//crypto/bls:go_default_library",
         "//encoding/bytesutil:go_default_library",
@@ -73,7 +74,6 @@ go_library(
         "//proto/eth/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/prysm/v1alpha1/attestation:go_default_library",
-        "//proto/prysm/v1alpha1/block:go_default_library",
         "//runtime/version:go_default_library",
         "//time:go_default_library",
         "//time/slots:go_default_library",
@@ -110,6 +110,7 @@ go_test(
         "log_test.go",
         "metrics_test.go",
         "mock_test.go",
+        "new_slot_test.go",
         "pow_block_test.go",
         "process_attestation_test.go",
         "process_block_test.go",
@@ -136,9 +137,10 @@ go_test(
         "//beacon-chain/state/v1:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/wrapper:go_default_library",
+        "//container/trie:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
-        "//proto/prysm/v1alpha1/wrapper:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
@@ -187,9 +189,10 @@ go_test(
         "//beacon-chain/powchain:go_default_library",
         "//beacon-chain/powchain/testing:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/wrapper:go_default_library",
+        "//container/trie:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
-        "//proto/prysm/v1alpha1/wrapper:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",

beacon-chain/blockchain/chain_info.go

@@ -4,6 +4,8 @@ import (
 	"context"
 	"time"
 
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/beacon-chain/blockchain/store"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/forkchoice"
 	doublylinkedtree "github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/doubly-linked-tree"
@@ -11,16 +13,16 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/time/slots"
 	"go.opencensus.io/trace"
 )
 
 // ChainInfoFetcher defines a common interface for methods in blockchain service which
-// directly retrieves chain info related data.
+// directly retrieve chain info related data.
 type ChainInfoFetcher interface {
 	HeadFetcher
 	FinalizationFetcher
@@ -31,6 +33,12 @@ type ChainInfoFetcher interface {
 	HeadDomainFetcher
 }
 
+// HeadUpdater defines a common interface for methods in blockchain service
+// which allow to update the head info
+type HeadUpdater interface {
+	UpdateHead(context.Context) error
+}
+
 // TimeFetcher retrieves the Ethereum consensus data that's related to time.
 type TimeFetcher interface {
 	GenesisTime() time.Time
@@ -43,11 +51,11 @@ type GenesisFetcher interface {
 }
 
 // HeadFetcher defines a common interface for methods in blockchain service which
-// directly retrieves head related data.
+// directly retrieve head related data.
 type HeadFetcher interface {
 	HeadSlot() types.Slot
 	HeadRoot(ctx context.Context) ([]byte, error)
-	HeadBlock(ctx context.Context) (block.SignedBeaconBlock, error)
+	HeadBlock(ctx context.Context) (interfaces.SignedBeaconBlock, error)
 	HeadState(ctx context.Context) (state.BeaconState, error)
 	HeadValidatorsIndices(ctx context.Context, epoch types.Epoch) ([]types.ValidatorIndex, error)
 	HeadGenesisValidatorsRoot() [32]byte
@@ -55,8 +63,6 @@ type HeadFetcher interface {
 	HeadPublicKeyToValidatorIndex(pubKey [fieldparams.BLSPubkeyLength]byte) (types.ValidatorIndex, bool)
 	HeadValidatorIndexToPublicKey(ctx context.Context, index types.ValidatorIndex) ([fieldparams.BLSPubkeyLength]byte, error)
 	ChainHeads() ([][32]byte, []types.Slot)
-	IsOptimistic(ctx context.Context) (bool, error)
-	IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool, error)
 	HeadSyncCommitteeFetcher
 	HeadDomainFetcher
 }
@@ -73,53 +79,62 @@ type CanonicalFetcher interface {
 }
 
 // FinalizationFetcher defines a common interface for methods in blockchain service which
-// directly retrieves finalization and justification related data.
+// directly retrieve finalization and justification related data.
 type FinalizationFetcher interface {
-	FinalizedCheckpt() *ethpb.Checkpoint
-	CurrentJustifiedCheckpt() *ethpb.Checkpoint
-	PreviousJustifiedCheckpt() *ethpb.Checkpoint
+	FinalizedCheckpt() (*ethpb.Checkpoint, error)
+	CurrentJustifiedCheckpt() (*ethpb.Checkpoint, error)
+	PreviousJustifiedCheckpt() (*ethpb.Checkpoint, error)
 	VerifyFinalizedBlkDescendant(ctx context.Context, blockRoot [32]byte) error
 }
 
+// OptimisticModeFetcher retrieves information about optimistic status of the node.
+type OptimisticModeFetcher interface {
+	IsOptimistic(ctx context.Context) (bool, error)
+	IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool, error)
+}
+
 // FinalizedCheckpt returns the latest finalized checkpoint from chain store.
-func (s *Service) FinalizedCheckpt() *ethpb.Checkpoint {
-	cp := s.store.FinalizedCheckpt()
-	if cp == nil {
-		return &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
+func (s *Service) FinalizedCheckpt() (*ethpb.Checkpoint, error) {
+	cp, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return nil, err
 	}
 
-	return ethpb.CopyCheckpoint(cp)
+	return ethpb.CopyCheckpoint(cp), nil
 }
 
 // CurrentJustifiedCheckpt returns the current justified checkpoint from chain store.
-func (s *Service) CurrentJustifiedCheckpt() *ethpb.Checkpoint {
-	cp := s.store.JustifiedCheckpt()
-	if cp == nil {
-		return &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
+func (s *Service) CurrentJustifiedCheckpt() (*ethpb.Checkpoint, error) {
+	cp, err := s.store.JustifiedCheckpt()
+	if err != nil {
+		return nil, err
 	}
 
-	return ethpb.CopyCheckpoint(cp)
+	return ethpb.CopyCheckpoint(cp), nil
 }
 
 // PreviousJustifiedCheckpt returns the previous justified checkpoint from chain store.
-func (s *Service) PreviousJustifiedCheckpt() *ethpb.Checkpoint {
-	cp := s.store.PrevJustifiedCheckpt()
-	if cp == nil {
-		return &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
+func (s *Service) PreviousJustifiedCheckpt() (*ethpb.Checkpoint, error) {
+	cp, err := s.store.PrevJustifiedCheckpt()
+	if err != nil {
+		return nil, err
 	}
 
-	return ethpb.CopyCheckpoint(cp)
+	return ethpb.CopyCheckpoint(cp), nil
 }
 
 // BestJustifiedCheckpt returns the best justified checkpoint from store.
-func (s *Service) BestJustifiedCheckpt() *ethpb.Checkpoint {
-	cp := s.store.BestJustifiedCheckpt()
-	// If there is no best justified checkpoint, return the checkpoint with root as zeros to be used for genesis cases.
-	if cp == nil {
-		return &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
+func (s *Service) BestJustifiedCheckpt() (*ethpb.Checkpoint, error) {
+	cp, err := s.store.BestJustifiedCheckpt()
+	if err != nil {
+		// If there is no best justified checkpoint, return the checkpoint with root as zeros to be used for genesis cases.
+		if errors.Is(err, store.ErrNilCheckpoint) {
+			return &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}, nil
+		}
+		return nil, err
 	}
 
-	return ethpb.CopyCheckpoint(cp)
+	return ethpb.CopyCheckpoint(cp), nil
 }
 
 // HeadSlot returns the slot of the head of the chain.
@@ -163,7 +178,7 @@ func (s *Service) HeadRoot(ctx context.Context) ([]byte, error) {
 // HeadBlock returns the head block of the chain.
 // If the head is nil from service struct,
 // it will attempt to get the head block from DB.
-func (s *Service) HeadBlock(ctx context.Context) (block.SignedBeaconBlock, error) {
+func (s *Service) HeadBlock(ctx context.Context) (interfaces.SignedBeaconBlock, error) {
 	s.headLock.RLock()
 	defer s.headLock.RUnlock()
 
@@ -232,7 +247,7 @@ func (s *Service) GenesisTime() time.Time {
 	return s.genesisTime
 }
 
-// GenesisValidatorsRoot returns the genesis validator
+// GenesisValidatorsRoot returns the genesis validators
 // root of the chain.
 func (s *Service) GenesisValidatorsRoot() [32]byte {
 	s.headLock.RLock()
@@ -299,7 +314,7 @@ func (s *Service) HeadValidatorIndexToPublicKey(_ context.Context, index types.V
 	return v.PublicKey(), nil
 }
 
-// ForkChoicer returns the forkchoice interface
+// ForkChoicer returns the forkchoice interface.
 func (s *Service) ForkChoicer() forkchoice.ForkChoicer {
 	return s.cfg.ForkChoiceStore
 }
@@ -315,7 +330,7 @@ func (s *Service) IsOptimistic(ctx context.Context) (bool, error) {
 	return s.IsOptimisticForRoot(ctx, s.head.root)
 }
 
-// IsOptimisticForRoot takes the root and slot as arguments instead of the current head
+// IsOptimisticForRoot takes the root as argument instead of the current head
 // and returns true if it is optimistic.
 func (s *Service) IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool, error) {
 	optimistic, err := s.cfg.ForkChoiceStore.IsOptimistic(root)
@@ -345,7 +360,7 @@ func (s *Service) IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool,
 		return false, nil
 	}
 
-	// checkpoint root could be zeros before the first finalized epoch. Use genesis root if the case.
+	// Checkpoint root could be zeros before the first finalized epoch. Use genesis root if the case.
 	lastValidated, err := s.cfg.BeaconDB.StateSummary(ctx, s.ensureRootNotZeros(bytesutil.ToBytes32(validatedCheckpoint.Root)))
 	if err != nil {
 		return false, err
@@ -363,7 +378,7 @@ func (s *Service) IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool,
 		return false, err
 	}
 
-	// historical non-canonical blocks here are returned as optimistic for safety.
+	// Historical non-canonical blocks here are returned as optimistic for safety.
 	return !isCanonical, nil
 }
 
@@ -372,7 +387,7 @@ func (s *Service) SetGenesisTime(t time.Time) {
 	s.genesisTime = t
 }
 
-// ForkChoiceStore returns the fork choice store in the service
+// ForkChoiceStore returns the fork choice store in the service.
 func (s *Service) ForkChoiceStore() forkchoice.ForkChoicer {
 	return s.cfg.ForkChoiceStore
 }

beacon-chain/blockchain/chain_info_norace_test.go

@@ -6,8 +6,8 @@ import (
 
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
 )

beacon-chain/blockchain/chain_info_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/prysmaticlabs/prysm/beacon-chain/blockchain/store"
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
 	doublylinkedtree "github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/doubly-linked-tree"
 	"github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/protoarray"
@@ -12,9 +13,9 @@ import (
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
@@ -26,12 +27,6 @@ var _ ChainInfoFetcher = (*Service)(nil)
 var _ TimeFetcher = (*Service)(nil)
 var _ ForkFetcher = (*Service)(nil)
 
-func TestFinalizedCheckpt_Nil(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	c := setupBeaconChain(t, beaconDB)
-	assert.DeepEqual(t, params.BeaconConfig().ZeroHash[:], c.FinalizedCheckpt().Root, "Incorrect pre chain start value")
-}
-
 func TestHeadRoot_Nil(t *testing.T) {
 	beaconDB := testDB.SetupDB(t)
 	c := setupBeaconChain(t, beaconDB)
@@ -51,9 +46,11 @@ func TestFinalizedCheckpt_CanRetrieve(t *testing.T) {
 
 	cp := &ethpb.Checkpoint{Epoch: 5, Root: bytesutil.PadTo([]byte("foo"), 32)}
 	c := setupBeaconChain(t, beaconDB)
-	c.store.SetFinalizedCheckpt(cp)
+	c.store.SetFinalizedCheckptAndPayloadHash(cp, [32]byte{'a'})
 
-	assert.Equal(t, cp.Epoch, c.FinalizedCheckpt().Epoch, "Unexpected finalized epoch")
+	cp, err := c.FinalizedCheckpt()
+	require.NoError(t, err)
+	assert.Equal(t, cp.Epoch, cp.Epoch, "Unexpected finalized epoch")
 }
 
 func TestFinalizedCheckpt_GenesisRootOk(t *testing.T) {
@@ -62,19 +59,24 @@ func TestFinalizedCheckpt_GenesisRootOk(t *testing.T) {
 	genesisRoot := [32]byte{'A'}
 	cp := &ethpb.Checkpoint{Root: genesisRoot[:]}
 	c := setupBeaconChain(t, beaconDB)
-	c.store.SetFinalizedCheckpt(cp)
+	c.store.SetFinalizedCheckptAndPayloadHash(cp, [32]byte{'a'})
 	c.originBlockRoot = genesisRoot
-	assert.DeepEqual(t, c.originBlockRoot[:], c.FinalizedCheckpt().Root)
+	cp, err := c.FinalizedCheckpt()
+	require.NoError(t, err)
+	assert.DeepEqual(t, c.originBlockRoot[:], cp.Root)
 }
 
 func TestCurrentJustifiedCheckpt_CanRetrieve(t *testing.T) {
 	beaconDB := testDB.SetupDB(t)
 
 	c := setupBeaconChain(t, beaconDB)
-	assert.Equal(t, params.BeaconConfig().ZeroHash, bytesutil.ToBytes32(c.CurrentJustifiedCheckpt().Root), "Unexpected justified epoch")
+	_, err := c.CurrentJustifiedCheckpt()
+	require.ErrorIs(t, err, store.ErrNilCheckpoint)
 	cp := &ethpb.Checkpoint{Epoch: 6, Root: bytesutil.PadTo([]byte("foo"), 32)}
-	c.store.SetJustifiedCheckpt(cp)
-	assert.Equal(t, cp.Epoch, c.CurrentJustifiedCheckpt().Epoch, "Unexpected justified epoch")
+	c.store.SetJustifiedCheckptAndPayloadHash(cp, [32]byte{})
+	jp, err := c.CurrentJustifiedCheckpt()
+	require.NoError(t, err)
+	assert.Equal(t, cp.Epoch, jp.Epoch, "Unexpected justified epoch")
 }
 
 func TestJustifiedCheckpt_GenesisRootOk(t *testing.T) {
@@ -83,9 +85,11 @@ func TestJustifiedCheckpt_GenesisRootOk(t *testing.T) {
 	c := setupBeaconChain(t, beaconDB)
 	genesisRoot := [32]byte{'B'}
 	cp := &ethpb.Checkpoint{Root: genesisRoot[:]}
-	c.store.SetJustifiedCheckpt(cp)
+	c.store.SetJustifiedCheckptAndPayloadHash(cp, [32]byte{})
 	c.originBlockRoot = genesisRoot
-	assert.DeepEqual(t, c.originBlockRoot[:], c.CurrentJustifiedCheckpt().Root)
+	cp, err := c.CurrentJustifiedCheckpt()
+	require.NoError(t, err)
+	assert.DeepEqual(t, c.originBlockRoot[:], cp.Root)
 }
 
 func TestPreviousJustifiedCheckpt_CanRetrieve(t *testing.T) {
@@ -93,9 +97,12 @@ func TestPreviousJustifiedCheckpt_CanRetrieve(t *testing.T) {
 
 	cp := &ethpb.Checkpoint{Epoch: 7, Root: bytesutil.PadTo([]byte("foo"), 32)}
 	c := setupBeaconChain(t, beaconDB)
-	assert.Equal(t, params.BeaconConfig().ZeroHash, bytesutil.ToBytes32(c.CurrentJustifiedCheckpt().Root), "Unexpected justified epoch")
+	_, err := c.PreviousJustifiedCheckpt()
+	require.ErrorIs(t, err, store.ErrNilCheckpoint)
 	c.store.SetPrevJustifiedCheckpt(cp)
-	assert.Equal(t, cp.Epoch, c.PreviousJustifiedCheckpt().Epoch, "Unexpected previous justified epoch")
+	pcp, err := c.PreviousJustifiedCheckpt()
+	require.NoError(t, err)
+	assert.Equal(t, cp.Epoch, pcp.Epoch, "Unexpected previous justified epoch")
 }
 
 func TestPrevJustifiedCheckpt_GenesisRootOk(t *testing.T) {
@@ -106,7 +113,9 @@ func TestPrevJustifiedCheckpt_GenesisRootOk(t *testing.T) {
 	c := setupBeaconChain(t, beaconDB)
 	c.store.SetPrevJustifiedCheckpt(cp)
 	c.originBlockRoot = genesisRoot
-	assert.DeepEqual(t, c.originBlockRoot[:], c.PreviousJustifiedCheckpt().Root)
+	pcp, err := c.PreviousJustifiedCheckpt()
+	require.NoError(t, err)
+	assert.DeepEqual(t, c.originBlockRoot[:], pcp.Root)
 }
 
 func TestHeadSlot_CanRetrieve(t *testing.T) {

beacon-chain/blockchain/error.go

@@ -3,19 +3,45 @@ package blockchain
 import "github.com/pkg/errors"
 
 var (
-	// errNilJustifiedInStore is returned when a nil justified checkpt is returned from store.
-	errNilJustifiedInStore = errors.New("nil justified checkpoint returned from store")
-	// errNilBestJustifiedInStore is returned when a nil justified checkpt is returned from store.
-	errNilBestJustifiedInStore = errors.New("nil best justified checkpoint returned from store")
 	// errNilFinalizedInStore is returned when a nil finalized checkpt is returned from store.
 	errNilFinalizedInStore = errors.New("nil finalized checkpoint returned from store")
 	// errInvalidNilSummary is returned when a nil summary is returned from the DB.
 	errInvalidNilSummary = errors.New("nil summary returned from the DB")
-	// errNilParentInDB is returned when a nil parent block is returned from the DB.
-	errNilParentInDB = errors.New("nil parent block in DB")
 	// errWrongBlockCount is returned when the wrong number of blocks or
 	// block roots is used
 	errWrongBlockCount = errors.New("wrong number of blocks or block roots")
 	// block is not a valid optimistic candidate block
 	errNotOptimisticCandidate = errors.New("block is not suitable for optimistic sync")
 )
+
+// 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.
+// Some examples of invalid blocks are:
+// The block violates state transition rules.
+// The block is deemed invalid according to execution layer client.
+// The block violates certain fork choice rules (before finalized slot, not finalized ancestor)
+type invalidBlock struct {
+	error
+}
+
+type invalidBlockError interface {
+	Error() string
+	InvalidBlock() bool
+}
+
+// InvalidBlock returns true for `invalidBlock`.
+func (e invalidBlock) InvalidBlock() bool {
+	return true
+}
+
+// IsInvalidBlock returns true if the error has `invalidBlock`.
+func IsInvalidBlock(e error) bool {
+	if e == nil {
+		return false
+	}
+	d, ok := e.(invalidBlockError)
+	if !ok {
+		return IsInvalidBlock(errors.Unwrap(e))
+	}
+	return d.InvalidBlock()
+}

beacon-chain/blockchain/error_test.go

@@ -0,0 +1,17 @@
+package blockchain
+
+import (
+	"testing"
+
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/testing/require"
+)
+
+func TestIsInvalidBlock(t *testing.T) {
+	require.Equal(t, false, IsInvalidBlock(ErrInvalidPayload))
+	err := invalidBlock{ErrInvalidPayload}
+	require.Equal(t, true, IsInvalidBlock(err))
+
+	newErr := errors.Wrap(err, "wrap me")
+	require.Equal(t, true, IsInvalidBlock(newErr))
+}

beacon-chain/blockchain/execution_engine.go

@@ -14,25 +14,36 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	enginev1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/time/slots"
 	"github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
 )
 
-var ErrUndefinedExecutionEngineError = errors.New("received an undefined ee error")
+var (
+	ErrInvalidPayload                = errors.New("recevied an INVALID payload from execution engine")
+	ErrUndefinedExecutionEngineError = errors.New("received an undefined ee error")
+)
+
+// notifyForkchoiceUpdateArg is the argument for the forkchoice update notification `notifyForkchoiceUpdate`.
+type notifyForkchoiceUpdateArg struct {
+	headState state.BeaconState
+	headRoot  [32]byte
+	headBlock interfaces.BeaconBlock
+}
 
 // notifyForkchoiceUpdate signals execution engine the fork choice updates. Execution engine should:
 // 1. Re-organizes the execution payload chain and corresponding state to make head_block_hash the head.
 // 2. Applies finality to the execution state: it irreversibly persists the chain of all execution payloads and corresponding state, up to and including finalized_block_hash.
-func (s *Service) notifyForkchoiceUpdate(ctx context.Context, headState state.BeaconState, headBlk block.BeaconBlock, headRoot [32]byte, finalizedRoot [32]byte) (*enginev1.PayloadIDBytes, error) {
+func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *notifyForkchoiceUpdateArg) (*enginev1.PayloadIDBytes, error) {
 	ctx, span := trace.StartSpan(ctx, "blockChain.notifyForkchoiceUpdate")
 	defer span.End()
 
+	headBlk := arg.headBlock
 	if headBlk == nil || headBlk.IsNil() || headBlk.Body().IsNil() {
 		return nil, errors.New("nil head block")
 	}
@@ -48,34 +59,21 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, headState state.Be
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get execution payload")
 	}
-	finalizedBlock, err := s.getBlock(ctx, s.ensureRootNotZeros(finalizedRoot))
-	if err != nil {
-		return nil, err
-	}
-	var finalizedHash []byte
-	if blocks.IsPreBellatrixVersion(finalizedBlock.Block().Version()) {
-		finalizedHash = params.BeaconConfig().ZeroHash[:]
-	} else {
-		payload, err := finalizedBlock.Block().Body().ExecutionPayload()
-		if err != nil {
-			return nil, errors.Wrap(err, "could not get finalized block execution payload")
-		}
-		finalizedHash = payload.BlockHash
-	}
-
+	finalizedHash := s.store.FinalizedPayloadBlockHash()
+	justifiedHash := s.store.JustifiedPayloadBlockHash()
 	fcs := &enginev1.ForkchoiceState{
 		HeadBlockHash:      headPayload.BlockHash,
-		SafeBlockHash:      headPayload.BlockHash,
-		FinalizedBlockHash: finalizedHash,
+		SafeBlockHash:      justifiedHash[:],
+		FinalizedBlockHash: finalizedHash[:],
 	}
 
 	nextSlot := s.CurrentSlot() + 1 // Cache payload ID for next slot proposer.
-	hasAttr, attr, proposerId, err := s.getPayloadAttribute(ctx, headState, nextSlot)
+	hasAttr, attr, proposerId, err := s.getPayloadAttribute(ctx, arg.headState, nextSlot)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get payload attribute")
 	}
 
-	payloadID, _, err := s.cfg.ExecutionEngineCaller.ForkchoiceUpdated(ctx, fcs, attr)
+	payloadID, lastValidHash, err := s.cfg.ExecutionEngineCaller.ForkchoiceUpdated(ctx, fcs, attr)
 	if err != nil {
 		switch err {
 		case powchain.ErrAcceptedSyncingPayloadStatus:
@@ -83,15 +81,54 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, headState state.Be
 			log.WithFields(logrus.Fields{
 				"headSlot":                  headBlk.Slot(),
 				"headPayloadBlockHash":      fmt.Sprintf("%#x", bytesutil.Trunc(headPayload.BlockHash)),
-				"finalizedPayloadBlockHash": fmt.Sprintf("%#x", bytesutil.Trunc(finalizedHash)),
+				"finalizedPayloadBlockHash": fmt.Sprintf("%#x", bytesutil.Trunc(finalizedHash[:])),
 			}).Info("Called fork choice updated with optimistic block")
 			return payloadID, s.optimisticCandidateBlock(ctx, headBlk)
+		case powchain.ErrInvalidPayloadStatus:
+			newPayloadInvalidNodeCount.Inc()
+			headRoot := arg.headRoot
+			invalidRoots, err := s.ForkChoicer().SetOptimisticToInvalid(ctx, headRoot, bytesutil.ToBytes32(headBlk.ParentRoot()), bytesutil.ToBytes32(lastValidHash))
+			if err != nil {
+				return nil, err
+			}
+			if err := s.removeInvalidBlockAndState(ctx, invalidRoots); err != nil {
+				return nil, err
+			}
+
+			r, err := s.updateHead(ctx, s.justifiedBalances.balances)
+			if err != nil {
+				return nil, err
+			}
+			b, err := s.getBlock(ctx, r)
+			if err != nil {
+				return nil, err
+			}
+			st, err := s.cfg.StateGen.StateByRoot(ctx, r)
+			if err != nil {
+				return nil, err
+			}
+			pid, err := s.notifyForkchoiceUpdate(ctx, &notifyForkchoiceUpdateArg{
+				headState: st,
+				headRoot:  r,
+				headBlock: b.Block(),
+			})
+			if err != nil {
+				return nil, err
+			}
+
+			log.WithFields(logrus.Fields{
+				"slot":         headBlk.Slot(),
+				"blockRoot":    fmt.Sprintf("%#x", headRoot),
+				"invalidCount": len(invalidRoots),
+			}).Warn("Pruned invalid blocks")
+			return pid, ErrInvalidPayload
+
 		default:
 			return nil, errors.WithMessage(ErrUndefinedExecutionEngineError, err.Error())
 		}
 	}
 	forkchoiceUpdatedValidNodeCount.Inc()
-	if err := s.cfg.ForkChoiceStore.SetOptimisticToValid(ctx, headRoot); err != nil {
+	if err := s.cfg.ForkChoiceStore.SetOptimisticToValid(ctx, arg.headRoot); err != nil {
 		return nil, errors.Wrap(err, "could not set block to valid")
 	}
 	if hasAttr { // If the forkchoice update call has an attribute, update the proposer payload ID cache.
@@ -102,10 +139,27 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, headState state.Be
 	return payloadID, nil
 }
 
+// getPayloadHash returns the payload hash given the block root.
+// if the block is before bellatrix fork epoch, it returns the zero hash.
+func (s *Service) getPayloadHash(ctx context.Context, root []byte) ([32]byte, error) {
+	blk, err := s.getBlock(ctx, s.ensureRootNotZeros(bytesutil.ToBytes32(root)))
+	if err != nil {
+		return [32]byte{}, err
+	}
+	if blocks.IsPreBellatrixVersion(blk.Block().Version()) {
+		return params.BeaconConfig().ZeroHash, nil
+	}
+	payload, err := blk.Block().Body().ExecutionPayload()
+	if err != nil {
+		return [32]byte{}, errors.Wrap(err, "could not get execution payload")
+	}
+	return bytesutil.ToBytes32(payload.BlockHash), nil
+}
+
 // notifyForkchoiceUpdate signals execution engine on a new payload.
 // It returns true if the EL has returned VALID for the block
 func (s *Service) notifyNewPayload(ctx context.Context, postStateVersion int,
-	postStateHeader *ethpb.ExecutionPayloadHeader, blk block.SignedBeaconBlock) (bool, error) {
+	postStateHeader *ethpb.ExecutionPayloadHeader, blk interfaces.SignedBeaconBlock) (bool, error) {
 	ctx, span := trace.StartSpan(ctx, "blockChain.notifyNewPayload")
 	defer span.End()
 
@@ -120,14 +174,14 @@ func (s *Service) notifyNewPayload(ctx context.Context, postStateVersion int,
 	body := blk.Block().Body()
 	enabled, err := blocks.IsExecutionEnabledUsingHeader(postStateHeader, body)
 	if err != nil {
-		return false, errors.Wrap(err, "could not determine if execution is enabled")
+		return false, errors.Wrap(invalidBlock{err}, "could not determine if execution is enabled")
 	}
 	if !enabled {
 		return true, nil
 	}
 	payload, err := body.ExecutionPayload()
 	if err != nil {
-		return false, errors.Wrap(err, "could not get execution payload")
+		return false, errors.Wrap(invalidBlock{err}, "could not get execution payload")
 	}
 	lastValidHash, err := s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload)
 	switch err {
@@ -154,7 +208,12 @@ func (s *Service) notifyNewPayload(ctx context.Context, postStateVersion int,
 		if err := s.removeInvalidBlockAndState(ctx, invalidRoots); err != nil {
 			return false, err
 		}
-		return false, errors.New("could not validate an INVALID payload from execution engine")
+		log.WithFields(logrus.Fields{
+			"slot":         blk.Block().Slot(),
+			"blockRoot":    fmt.Sprintf("%#x", root),
+			"invalidCount": len(invalidRoots),
+		}).Warn("Pruned invalid blocks")
+		return false, invalidBlock{ErrInvalidPayload}
 	default:
 		return false, errors.WithMessage(ErrUndefinedExecutionEngineError, err.Error())
 	}
@@ -172,18 +231,14 @@ func (s *Service) notifyNewPayload(ctx context.Context, postStateVersion int,
 //        return True
 //
 //    return False
-func (s *Service) optimisticCandidateBlock(ctx context.Context, blk block.BeaconBlock) error {
+func (s *Service) optimisticCandidateBlock(ctx context.Context, blk interfaces.BeaconBlock) error {
 	if blk.Slot()+params.BeaconConfig().SafeSlotsToImportOptimistically <= s.CurrentSlot() {
 		return nil
 	}
-
-	parent, err := s.cfg.BeaconDB.Block(ctx, bytesutil.ToBytes32(blk.ParentRoot()))
+	parent, err := s.getBlock(ctx, bytesutil.ToBytes32(blk.ParentRoot()))
 	if err != nil {
 		return err
 	}
-	if parent == nil {
-		return errNilParentInDB
-	}
 	parentIsExecutionBlock, err := blocks.IsExecutionBlock(parent.Block().Body())
 	if err != nil {
 		return err
@@ -223,7 +278,10 @@ func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState,
 			logrus.WithFields(logrus.Fields{
 				"validatorIndex": proposerID,
 				"burnAddress":    fieldparams.EthBurnAddressHex,
-			}).Error("Fee recipient not set. Using burn address")
+			}).Warn("Fee recipient is currently using the burn address, " +
+				"you will not be rewarded transaction fees on this setting. " +
+				"Please set a different eth address as the fee recipient. " +
+				"Please refer to our documentation for instructions")
 		}
 	case err != nil:
 		return false, nil, 0, errors.Wrap(err, "could not get fee recipient in db")

beacon-chain/blockchain/execution_engine_test.go

@@ -9,6 +9,7 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
+	doublylinkedtree "github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/doubly-linked-tree"
 	"github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/protoarray"
 	"github.com/prysmaticlabs/prysm/beacon-chain/powchain"
 	mockPOW "github.com/prysmaticlabs/prysm/beacon-chain/powchain/testing"
@@ -16,12 +17,12 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	v1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
@@ -56,11 +57,14 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 	}
 	require.NoError(t, err)
 	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, 0, 0))
+	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 1, [32]byte{'a'}, [32]byte{}, params.BeaconConfig().ZeroHash, 0, 0))
 
 	tests := []struct {
 		name             string
-		blk              block.BeaconBlock
+		blk              interfaces.BeaconBlock
+		headRoot         [32]byte
 		finalizedRoot    [32]byte
+		justifiedRoot    [32]byte
 		newForkchoiceErr error
 		errString        string
 	}{
@@ -70,7 +74,7 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 		},
 		{
 			name: "phase0 block",
-			blk: func() block.BeaconBlock {
+			blk: func() interfaces.BeaconBlock {
 				b, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{}})
 				require.NoError(t, err)
 				return b
@@ -78,7 +82,7 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 		},
 		{
 			name: "altair block",
-			blk: func() block.BeaconBlock {
+			blk: func() interfaces.BeaconBlock {
 				b, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlockAltair{Body: &ethpb.BeaconBlockBodyAltair{}})
 				require.NoError(t, err)
 				return b
@@ -86,7 +90,7 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 		},
 		{
 			name: "not execution block",
-			blk: func() block.BeaconBlock {
+			blk: func() interfaces.BeaconBlock {
 				b, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlockBellatrix{
 					Body: &ethpb.BeaconBlockBodyBellatrix{
 						ExecutionPayload: &v1.ExecutionPayload{
@@ -107,7 +111,7 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 		},
 		{
 			name: "happy case: finalized root is altair block",
-			blk: func() block.BeaconBlock {
+			blk: func() interfaces.BeaconBlock {
 				b, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlockBellatrix{
 					Body: &ethpb.BeaconBlockBodyBellatrix{
 						ExecutionPayload: &v1.ExecutionPayload{},
@@ -117,10 +121,11 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 				return b
 			}(),
 			finalizedRoot: altairBlkRoot,
+			justifiedRoot: altairBlkRoot,
 		},
 		{
 			name: "happy case: finalized root is bellatrix block",
-			blk: func() block.BeaconBlock {
+			blk: func() interfaces.BeaconBlock {
 				b, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlockBellatrix{
 					Body: &ethpb.BeaconBlockBodyBellatrix{
 						ExecutionPayload: &v1.ExecutionPayload{},
@@ -130,10 +135,11 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 				return b
 			}(),
 			finalizedRoot: bellatrixBlkRoot,
+			justifiedRoot: bellatrixBlkRoot,
 		},
 		{
 			name: "forkchoice updated with optimistic block",
-			blk: func() block.BeaconBlock {
+			blk: func() interfaces.BeaconBlock {
 				b, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlockBellatrix{
 					Body: &ethpb.BeaconBlockBodyBellatrix{
 						ExecutionPayload: &v1.ExecutionPayload{},
@@ -144,10 +150,11 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 			}(),
 			newForkchoiceErr: powchain.ErrAcceptedSyncingPayloadStatus,
 			finalizedRoot:    bellatrixBlkRoot,
+			justifiedRoot:    bellatrixBlkRoot,
 		},
 		{
 			name: "forkchoice updated with invalid block",
-			blk: func() block.BeaconBlock {
+			blk: func() interfaces.BeaconBlock {
 				b, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlockBellatrix{
 					Body: &ethpb.BeaconBlockBodyBellatrix{
 						ExecutionPayload: &v1.ExecutionPayload{},
@@ -158,7 +165,9 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 			}(),
 			newForkchoiceErr: powchain.ErrInvalidPayloadStatus,
 			finalizedRoot:    bellatrixBlkRoot,
-			errString:        ErrUndefinedExecutionEngineError.Error(),
+			justifiedRoot:    bellatrixBlkRoot,
+			headRoot:         [32]byte{'a'},
+			errString:        ErrInvalidPayload.Error(),
 		},
 	}
 
@@ -166,7 +175,17 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			service.cfg.ExecutionEngineCaller = &mockPOW.EngineClient{ErrForkchoiceUpdated: tt.newForkchoiceErr}
 			st, _ := util.DeterministicGenesisState(t, 1)
-			_, err := service.notifyForkchoiceUpdate(ctx, st, tt.blk, service.headRoot(), tt.finalizedRoot)
+			require.NoError(t, beaconDB.SaveState(ctx, st, tt.finalizedRoot))
+			require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, tt.finalizedRoot))
+			fc := &ethpb.Checkpoint{Epoch: 1, Root: tt.finalizedRoot[:]}
+			service.store.SetFinalizedCheckptAndPayloadHash(fc, [32]byte{'a'})
+			service.store.SetJustifiedCheckptAndPayloadHash(fc, [32]byte{'b'})
+			arg := &notifyForkchoiceUpdateArg{
+				headState: st,
+				headRoot:  tt.headRoot,
+				headBlock: tt.blk,
+			}
+			_, err := service.notifyForkchoiceUpdate(ctx, arg)
 			if tt.errString != "" {
 				require.ErrorContains(t, tt.errString, err)
 			} else {
@@ -176,6 +195,147 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 	}
 }
 
+//
+//
+//  A <- B <- C <- D
+//       \
+//         ---------- E <- F
+//                     \
+//                       ------ G
+// D is the current head, attestations for F and G come late, both are invalid.
+// We switch recursively to F then G and finally to D.
+//
+// We test:
+// 1. forkchoice removes blocks F and G from the forkchoice implementation
+// 2. forkchoice removes the weights of these blocks
+// 3. the blockchain package calls fcu to obtain heads G -> F -> D.
+
+func Test_NotifyForkchoiceUpdateRecursive(t *testing.T) {
+	ctx := context.Background()
+	beaconDB := testDB.SetupDB(t)
+
+	// Prepare blocks
+	ba := util.NewBeaconBlockBellatrix()
+	ba.Block.Body.ExecutionPayload.BlockNumber = 1
+	wba, err := wrapper.WrappedSignedBeaconBlock(ba)
+	require.NoError(t, err)
+	bra, err := wba.Block().HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, beaconDB.SaveBlock(ctx, wba))
+
+	bb := util.NewBeaconBlockBellatrix()
+	bb.Block.Body.ExecutionPayload.BlockNumber = 2
+	wbb, err := wrapper.WrappedSignedBeaconBlock(bb)
+	require.NoError(t, err)
+	brb, err := wbb.Block().HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, beaconDB.SaveBlock(ctx, wbb))
+
+	bc := util.NewBeaconBlockBellatrix()
+	bc.Block.Body.ExecutionPayload.BlockNumber = 3
+	wbc, err := wrapper.WrappedSignedBeaconBlock(bc)
+	require.NoError(t, err)
+	brc, err := wbc.Block().HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, beaconDB.SaveBlock(ctx, wbc))
+
+	bd := util.NewBeaconBlockBellatrix()
+	pd := [32]byte{'D'}
+	bd.Block.Body.ExecutionPayload.BlockHash = pd[:]
+	bd.Block.Body.ExecutionPayload.BlockNumber = 4
+	wbd, err := wrapper.WrappedSignedBeaconBlock(bd)
+	require.NoError(t, err)
+	brd, err := wbd.Block().HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, beaconDB.SaveBlock(ctx, wbd))
+
+	be := util.NewBeaconBlockBellatrix()
+	pe := [32]byte{'E'}
+	be.Block.Body.ExecutionPayload.BlockHash = pe[:]
+	be.Block.Body.ExecutionPayload.BlockNumber = 5
+	wbe, err := wrapper.WrappedSignedBeaconBlock(be)
+	require.NoError(t, err)
+	bre, err := wbe.Block().HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, beaconDB.SaveBlock(ctx, wbe))
+
+	bf := util.NewBeaconBlockBellatrix()
+	pf := [32]byte{'F'}
+	bf.Block.Body.ExecutionPayload.BlockHash = pf[:]
+	bf.Block.Body.ExecutionPayload.BlockNumber = 6
+	bf.Block.ParentRoot = bre[:]
+	wbf, err := wrapper.WrappedSignedBeaconBlock(bf)
+	require.NoError(t, err)
+	brf, err := wbf.Block().HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, beaconDB.SaveBlock(ctx, wbf))
+
+	bg := util.NewBeaconBlockBellatrix()
+	bg.Block.Body.ExecutionPayload.BlockNumber = 7
+	pg := [32]byte{'G'}
+	bg.Block.Body.ExecutionPayload.BlockHash = pg[:]
+	bg.Block.ParentRoot = bre[:]
+	wbg, err := wrapper.WrappedSignedBeaconBlock(bg)
+	require.NoError(t, err)
+	brg, err := wbg.Block().HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, beaconDB.SaveBlock(ctx, wbg))
+
+	// Insert blocks into forkchoice
+	fcs := doublylinkedtree.New(0, 0)
+	opts := []Option{
+		WithDatabase(beaconDB),
+		WithStateGen(stategen.New(beaconDB)),
+		WithForkChoiceStore(fcs),
+		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
+	}
+	service, err := NewService(ctx, opts...)
+	service.justifiedBalances.balances = []uint64{50, 100, 200}
+	require.NoError(t, err)
+	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 1, bra, [32]byte{}, [32]byte{'A'}, 0, 0))
+	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 2, brb, bra, [32]byte{'B'}, 0, 0))
+	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 3, brc, brb, [32]byte{'C'}, 0, 0))
+	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 4, brd, brc, [32]byte{'D'}, 0, 0))
+	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 5, bre, brb, [32]byte{'E'}, 0, 0))
+	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 6, brf, bre, [32]byte{'F'}, 0, 0))
+	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 7, brg, bre, [32]byte{'G'}, 0, 0))
+
+	// Insert Attestations to D, F and G so that they have higher weight than D
+	// Ensure G is head
+	fcs.ProcessAttestation(ctx, []uint64{0}, brd, 1)
+	fcs.ProcessAttestation(ctx, []uint64{1}, brf, 1)
+	fcs.ProcessAttestation(ctx, []uint64{2}, brg, 1)
+	headRoot, err := fcs.Head(ctx, 0, bra, []uint64{50, 100, 200}, 0)
+	require.NoError(t, err)
+	require.Equal(t, brg, headRoot)
+
+	// Prepare Engine Mock to return invalid unless head is D, LVH =  E
+	service.cfg.ExecutionEngineCaller = &mockPOW.EngineClient{ErrForkchoiceUpdated: powchain.ErrInvalidPayloadStatus, ForkChoiceUpdatedResp: pe[:], OverrideValidHash: [32]byte{'D'}}
+	st, _ := util.DeterministicGenesisState(t, 1)
+
+	require.NoError(t, beaconDB.SaveState(ctx, st, bra))
+	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, bra))
+	fc := &ethpb.Checkpoint{Epoch: 0, Root: bra[:]}
+	service.store.SetFinalizedCheckptAndPayloadHash(fc, [32]byte{'a'})
+	service.store.SetJustifiedCheckptAndPayloadHash(fc, [32]byte{'b'})
+	a := &notifyForkchoiceUpdateArg{
+		headState: st,
+		headBlock: wbg.Block(),
+		headRoot:  brg,
+	}
+	_, err = service.notifyForkchoiceUpdate(ctx, a)
+	require.ErrorIs(t, ErrInvalidPayload, err)
+	// Ensure Head is D
+	headRoot, err = fcs.Head(ctx, 0, bra, service.justifiedBalances.balances, 0)
+	require.NoError(t, err)
+	require.Equal(t, brd, headRoot)
+
+	// Ensure F and G where removed but their parent E wasn't
+	require.Equal(t, false, fcs.HasNode(brf))
+	require.Equal(t, false, fcs.HasNode(brg))
+	require.Equal(t, true, fcs.HasNode(bre))
+}
+
 func Test_NotifyNewPayload(t *testing.T) {
 	cfg := params.BeaconConfig()
 	cfg.TerminalTotalDifficulty = "2"
@@ -227,12 +387,13 @@ func Test_NotifyNewPayload(t *testing.T) {
 	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 1, r, [32]byte{}, params.BeaconConfig().ZeroHash, 0, 0))
 
 	tests := []struct {
-		name           string
 		postState      state.BeaconState
+		invalidBlock   bool
 		isValidPayload bool
-		blk            block.SignedBeaconBlock
+		blk            interfaces.SignedBeaconBlock
 		newPayloadErr  error
 		errString      string
+		name           string
 	}{
 		{
 			name:           "phase 0 post state",
@@ -262,8 +423,9 @@ func Test_NotifyNewPayload(t *testing.T) {
 			postState:      bellatrixState,
 			blk:            bellatrixBlk,
 			newPayloadErr:  powchain.ErrInvalidPayloadStatus,
-			errString:      "could not validate an INVALID payload from execution engine",
+			errString:      ErrInvalidPayload.Error(),
 			isValidPayload: false,
+			invalidBlock:   true,
 		},
 		{
 			name:           "altair pre state, altair block",
@@ -274,7 +436,7 @@ func Test_NotifyNewPayload(t *testing.T) {
 		{
 			name:      "altair pre state, happy case",
 			postState: bellatrixState,
-			blk: func() block.SignedBeaconBlock {
+			blk: func() interfaces.SignedBeaconBlock {
 				blk := &ethpb.SignedBeaconBlockBellatrix{
 					Block: &ethpb.BeaconBlockBellatrix{
 						Body: &ethpb.BeaconBlockBodyBellatrix{
@@ -293,7 +455,7 @@ func Test_NotifyNewPayload(t *testing.T) {
 		{
 			name:      "not at merge transition",
 			postState: bellatrixState,
-			blk: func() block.SignedBeaconBlock {
+			blk: func() interfaces.SignedBeaconBlock {
 				blk := &ethpb.SignedBeaconBlockBellatrix{
 					Block: &ethpb.BeaconBlockBellatrix{
 						Body: &ethpb.BeaconBlockBodyBellatrix{
@@ -319,7 +481,7 @@ func Test_NotifyNewPayload(t *testing.T) {
 		{
 			name:      "happy case",
 			postState: bellatrixState,
-			blk: func() block.SignedBeaconBlock {
+			blk: func() interfaces.SignedBeaconBlock {
 				blk := &ethpb.SignedBeaconBlockBellatrix{
 					Block: &ethpb.BeaconBlockBellatrix{
 						Body: &ethpb.BeaconBlockBodyBellatrix{
@@ -338,7 +500,7 @@ func Test_NotifyNewPayload(t *testing.T) {
 		{
 			name:      "undefined error from ee",
 			postState: bellatrixState,
-			blk: func() block.SignedBeaconBlock {
+			blk: func() interfaces.SignedBeaconBlock {
 				blk := &ethpb.SignedBeaconBlockBellatrix{
 					Block: &ethpb.BeaconBlockBellatrix{
 						Body: &ethpb.BeaconBlockBodyBellatrix{
@@ -375,9 +537,13 @@ func Test_NotifyNewPayload(t *testing.T) {
 			isValidPayload, err := service.notifyNewPayload(ctx, postVersion, postHeader, tt.blk)
 			if tt.errString != "" {
 				require.ErrorContains(t, tt.errString, err)
+				if tt.invalidBlock {
+					require.Equal(t, true, IsInvalidBlock(err))
+				}
 			} else {
 				require.NoError(t, err)
 				require.Equal(t, tt.isValidPayload, isValidPayload)
+				require.Equal(t, false, IsInvalidBlock(err))
 			}
 		})
 	}
@@ -453,13 +619,13 @@ func Test_IsOptimisticCandidateBlock(t *testing.T) {
 
 	tests := []struct {
 		name      string
-		blk       block.BeaconBlock
-		justified block.SignedBeaconBlock
+		blk       interfaces.BeaconBlock
+		justified interfaces.SignedBeaconBlock
 		err       error
 	}{
 		{
 			name: "deep block",
-			blk: func(tt *testing.T) block.BeaconBlock {
+			blk: func(tt *testing.T) interfaces.BeaconBlock {
 				blk := util.NewBeaconBlockBellatrix()
 				blk.Block.Slot = 1
 				blk.Block.ParentRoot = parentRoot[:]
@@ -467,7 +633,7 @@ func Test_IsOptimisticCandidateBlock(t *testing.T) {
 				require.NoError(tt, err)
 				return wr
 			}(t),
-			justified: func(tt *testing.T) block.SignedBeaconBlock {
+			justified: func(tt *testing.T) interfaces.SignedBeaconBlock {
 				blk := util.NewBeaconBlockBellatrix()
 				blk.Block.Slot = 32
 				blk.Block.ParentRoot = parentRoot[:]
@@ -479,7 +645,7 @@ func Test_IsOptimisticCandidateBlock(t *testing.T) {
 		},
 		{
 			name: "shallow block, Altair justified chkpt",
-			blk: func(tt *testing.T) block.BeaconBlock {
+			blk: func(tt *testing.T) interfaces.BeaconBlock {
 				blk := util.NewBeaconBlockAltair()
 				blk.Block.Slot = 200
 				blk.Block.ParentRoot = parentRoot[:]
@@ -487,7 +653,7 @@ func Test_IsOptimisticCandidateBlock(t *testing.T) {
 				require.NoError(tt, err)
 				return wr
 			}(t),
-			justified: func(tt *testing.T) block.SignedBeaconBlock {
+			justified: func(tt *testing.T) interfaces.SignedBeaconBlock {
 				blk := util.NewBeaconBlockAltair()
 				blk.Block.Slot = 32
 				blk.Block.ParentRoot = parentRoot[:]
@@ -499,7 +665,7 @@ func Test_IsOptimisticCandidateBlock(t *testing.T) {
 		},
 		{
 			name: "shallow block, Bellatrix justified chkpt without execution",
-			blk: func(tt *testing.T) block.BeaconBlock {
+			blk: func(tt *testing.T) interfaces.BeaconBlock {
 				blk := util.NewBeaconBlockBellatrix()
 				blk.Block.Slot = 200
 				blk.Block.ParentRoot = parentRoot[:]
@@ -507,7 +673,7 @@ func Test_IsOptimisticCandidateBlock(t *testing.T) {
 				require.NoError(tt, err)
 				return wr
 			}(t),
-			justified: func(tt *testing.T) block.SignedBeaconBlock {
+			justified: func(tt *testing.T) interfaces.SignedBeaconBlock {
 				blk := util.NewBeaconBlockBellatrix()
 				blk.Block.Slot = 32
 				blk.Block.ParentRoot = parentRoot[:]
@@ -522,15 +688,19 @@ func Test_IsOptimisticCandidateBlock(t *testing.T) {
 		jRoot, err := tt.justified.Block().HashTreeRoot()
 		require.NoError(t, err)
 		require.NoError(t, service.cfg.BeaconDB.SaveBlock(ctx, tt.justified))
-		service.store.SetJustifiedCheckpt(
+		service.store.SetJustifiedCheckptAndPayloadHash(
 			&ethpb.Checkpoint{
 				Root:  jRoot[:],
 				Epoch: slots.ToEpoch(tt.justified.Block().Slot()),
-			})
+			}, [32]byte{'a'})
 		require.NoError(t, service.cfg.BeaconDB.SaveBlock(ctx, wrappedParentBlock))
 
 		err = service.optimisticCandidateBlock(ctx, tt.blk)
-		require.Equal(t, tt.err, err)
+		if tt.err != nil {
+			require.Equal(t, tt.err.Error(), err.Error())
+		} else {
+			require.NoError(t, err)
+		}
 	}
 }
 
@@ -610,7 +780,7 @@ func Test_GetPayloadAttribute(t *testing.T) {
 	require.Equal(t, true, hasPayload)
 	require.Equal(t, suggestedVid, vId)
 	require.Equal(t, fieldparams.EthBurnAddressHex, common.BytesToAddress(attr.SuggestedFeeRecipient).String())
-	require.LogsContain(t, hook, "Fee recipient not set. Using burn address")
+	require.LogsContain(t, hook, "Fee recipient is currently using the burn address")
 
 	// Cache hit, advance state, has fee recipient
 	suggestedAddr := common.HexToAddress("123")
@@ -776,3 +946,42 @@ func TestService_removeInvalidBlockAndState(t *testing.T) {
 	require.NoError(t, err)
 	require.Equal(t, false, has)
 }
+
+func TestService_getPayloadHash(t *testing.T) {
+	ctx := context.Background()
+	beaconDB := testDB.SetupDB(t)
+	opts := []Option{
+		WithDatabase(beaconDB),
+		WithStateGen(stategen.New(beaconDB)),
+		WithForkChoiceStore(protoarray.New(0, 0, [32]byte{})),
+	}
+	service, err := NewService(ctx, opts...)
+	require.NoError(t, err)
+
+	_, err = service.getPayloadHash(ctx, []byte{})
+	require.ErrorIs(t, errBlockNotFoundInCacheOrDB, err)
+
+	b := util.NewBeaconBlock()
+	r, err := b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	wsb, err := wrapper.WrappedSignedBeaconBlock(b)
+	require.NoError(t, err)
+	service.saveInitSyncBlock(r, wsb)
+
+	h, err := service.getPayloadHash(ctx, r[:])
+	require.NoError(t, err)
+	require.DeepEqual(t, params.BeaconConfig().ZeroHash, h)
+
+	bb := util.NewBeaconBlockBellatrix()
+	h = [32]byte{'a'}
+	bb.Block.Body.ExecutionPayload.BlockHash = h[:]
+	r, err = b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	wsb, err = wrapper.WrappedSignedBeaconBlock(bb)
+	require.NoError(t, err)
+	service.saveInitSyncBlock(r, wsb)
+
+	h, err = service.getPayloadHash(ctx, r[:])
+	require.NoError(t, err)
+	require.DeepEqual(t, [32]byte{'a'}, h)
+}

beacon-chain/blockchain/head.go

@@ -15,10 +15,10 @@ import (
 	"github.com/prysmaticlabs/prysm/config/features"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpbv1 "github.com/prysmaticlabs/prysm/proto/eth/v1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/time/slots"
 	"github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
@@ -27,9 +27,9 @@ import (
 // UpdateAndSaveHeadWithBalances updates the beacon state head after getting justified balanced from cache.
 // This function is only used in spec-tests, it does save the head after updating it.
 func (s *Service) UpdateAndSaveHeadWithBalances(ctx context.Context) error {
-	cp := s.store.JustifiedCheckpt()
-	if cp == nil {
-		return errors.New("no justified checkpoint")
+	cp, err := s.store.JustifiedCheckpt()
+	if err != nil {
+		return err
 	}
 	balances, err := s.justifiedBalances.get(ctx, bytesutil.ToBytes32(cp.Root))
 	if err != nil {
@@ -40,7 +40,7 @@ func (s *Service) UpdateAndSaveHeadWithBalances(ctx context.Context) error {
 	if err != nil {
 		return errors.Wrap(err, "could not update head")
 	}
-	headBlock, err := s.cfg.BeaconDB.Block(ctx, headRoot)
+	headBlock, err := s.getBlock(ctx, headRoot)
 	if err != nil {
 		return err
 	}
@@ -53,10 +53,10 @@ func (s *Service) UpdateAndSaveHeadWithBalances(ctx context.Context) error {
 
 // This defines the current chain service's view of head.
 type head struct {
-	slot  types.Slot              // current head slot.
-	root  [32]byte                // current head root.
-	block block.SignedBeaconBlock // current head block.
-	state state.BeaconState       // current head state.
+	slot  types.Slot                   // current head slot.
+	root  [32]byte                     // current head root.
+	block interfaces.SignedBeaconBlock // current head block.
+	state state.BeaconState            // current head state.
 }
 
 // Determined the head from the fork choice service and saves its new data
@@ -66,13 +66,13 @@ func (s *Service) updateHead(ctx context.Context, balances []uint64) ([32]byte,
 	defer span.End()
 
 	// Get head from the fork choice service.
-	f := s.store.FinalizedCheckpt()
-	if f == nil {
-		return [32]byte{}, errNilFinalizedInStore
+	f, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return [32]byte{}, errors.Wrap(err, "could not get finalized checkpoint")
 	}
-	j := s.store.JustifiedCheckpt()
-	if j == nil {
-		return [32]byte{}, errNilJustifiedInStore
+	j, err := s.store.JustifiedCheckpt()
+	if err != nil {
+		return [32]byte{}, errors.Wrap(err, "could not get justified checkpoint")
 	}
 	// To get head before the first justified epoch, the fork choice will start with origin root
 	// instead of zero hashes.
@@ -86,7 +86,7 @@ func (s *Service) updateHead(ctx context.Context, balances []uint64) ([32]byte,
 	// re-initiate fork choice store using the latest justified info.
 	// This recovers a fatal condition and should not happen in run time.
 	if !s.cfg.ForkChoiceStore.HasNode(headStartRoot) {
-		jb, err := s.cfg.BeaconDB.Block(ctx, headStartRoot)
+		jb, err := s.getBlock(ctx, headStartRoot)
 		if err != nil {
 			return [32]byte{}, err
 		}
@@ -105,7 +105,7 @@ func (s *Service) updateHead(ctx context.Context, balances []uint64) ([32]byte,
 
 // This saves head info to the local service cache, it also saves the
 // new head root to the DB.
-func (s *Service) saveHead(ctx context.Context, headRoot [32]byte, headBlock block.SignedBeaconBlock, headState state.BeaconState) error {
+func (s *Service) saveHead(ctx context.Context, headRoot [32]byte, headBlock interfaces.SignedBeaconBlock, headState state.BeaconState) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.saveHead")
 	defer span.End()
 
@@ -189,7 +189,7 @@ func (s *Service) saveHead(ctx context.Context, headRoot [32]byte, headBlock blo
 // This gets called to update canonical root mapping. It does not save head block
 // root in DB. With the inception of initial-sync-cache-state flag, it uses finalized
 // check point as anchors to resume sync therefore head is no longer needed to be saved on per slot basis.
-func (s *Service) saveHeadNoDB(ctx context.Context, b block.SignedBeaconBlock, r [32]byte, hs state.BeaconState) error {
+func (s *Service) saveHeadNoDB(ctx context.Context, b interfaces.SignedBeaconBlock, r [32]byte, hs state.BeaconState) error {
 	if err := helpers.BeaconBlockIsNil(b); err != nil {
 		return err
 	}
@@ -206,7 +206,7 @@ func (s *Service) saveHeadNoDB(ctx context.Context, b block.SignedBeaconBlock, r
 }
 
 // This sets head view object which is used to track the head slot, root, block and state.
-func (s *Service) setHead(root [32]byte, block block.SignedBeaconBlock, state state.BeaconState) {
+func (s *Service) setHead(root [32]byte, block interfaces.SignedBeaconBlock, state state.BeaconState) {
 	s.headLock.Lock()
 	defer s.headLock.Unlock()
 
@@ -222,7 +222,7 @@ func (s *Service) setHead(root [32]byte, block block.SignedBeaconBlock, state st
 // This sets head view object which is used to track the head slot, root, block and state. The method
 // assumes that state being passed into the method will not be modified by any other alternate
 // caller which holds the state's reference.
-func (s *Service) setHeadInitialSync(root [32]byte, block block.SignedBeaconBlock, state state.BeaconState) {
+func (s *Service) setHeadInitialSync(root [32]byte, block interfaces.SignedBeaconBlock, state state.BeaconState) {
 	s.headLock.Lock()
 	defer s.headLock.Unlock()
 
@@ -255,7 +255,7 @@ func (s *Service) headRoot() [32]byte {
 // This returns the head block.
 // It does a full copy on head block for immutability.
 // This is a lock free version.
-func (s *Service) headBlock() block.SignedBeaconBlock {
+func (s *Service) headBlock() interfaces.SignedBeaconBlock {
 	return s.head.block.Copy()
 }
 
@@ -355,11 +355,7 @@ func (s *Service) notifyNewHeadEvent(
 // attestation pool. It also filters out the attestations that is one epoch older as a
 // defense so invalid attestations don't flow into the attestation pool.
 func (s *Service) saveOrphanedAtts(ctx context.Context, orphanedRoot [32]byte) error {
-	if !features.Get().CorrectlyInsertOrphanedAtts {
-		return nil
-	}
-
-	orphanedBlk, err := s.cfg.BeaconDB.Block(ctx, orphanedRoot)
+	orphanedBlk, err := s.getBlock(ctx, orphanedRoot)
 	if err != nil {
 		return err
 	}

beacon-chain/blockchain/head_test.go

@@ -10,12 +10,11 @@ import (
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
 	doublylinkedtree "github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/doubly-linked-tree"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
-	"github.com/prysmaticlabs/prysm/config/features"
 	"github.com/prysmaticlabs/prysm/config/params"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	ethpbv1 "github.com/prysmaticlabs/prysm/proto/eth/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
@@ -155,8 +154,8 @@ func TestUpdateHead_MissingJustifiedRoot(t *testing.T) {
 	r, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
 
-	service.store.SetJustifiedCheckpt(&ethpb.Checkpoint{Root: r[:]})
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: r[:]}, [32]byte{'a'})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{}, [32]byte{'b'})
 	service.store.SetBestJustifiedCheckpt(&ethpb.Checkpoint{})
 	headRoot, err := service.updateHead(context.Background(), []uint64{})
 	require.NoError(t, err)
@@ -231,11 +230,6 @@ func Test_notifyNewHeadEvent(t *testing.T) {
 }
 
 func TestSaveOrphanedAtts(t *testing.T) {
-	resetCfg := features.InitWithReset(&features.Flags{
-		CorrectlyInsertOrphanedAtts: true,
-	})
-	defer resetCfg()
-
 	genesis, keys := util.DeterministicGenesisState(t, 64)
 	b, err := util.GenerateFullBlock(genesis, keys, util.DefaultBlockGenConfig(), 1)
 	assert.NoError(t, err)
@@ -259,11 +253,6 @@ func TestSaveOrphanedAtts(t *testing.T) {
 }
 
 func TestSaveOrphanedAtts_CanFilter(t *testing.T) {
-	resetCfg := features.InitWithReset(&features.Flags{
-		CorrectlyInsertOrphanedAtts: true,
-	})
-	defer resetCfg()
-
 	genesis, keys := util.DeterministicGenesisState(t, 64)
 	b, err := util.GenerateFullBlock(genesis, keys, util.DefaultBlockGenConfig(), 1)
 	assert.NoError(t, err)
@@ -309,8 +298,8 @@ func TestUpdateHead_noSavedChanges(t *testing.T) {
 		Root:  bellatrixBlkRoot[:],
 		Epoch: 1,
 	}
-	service.store.SetFinalizedCheckpt(fcp)
-	service.store.SetJustifiedCheckpt(fcp)
+	service.store.SetFinalizedCheckptAndPayloadHash(fcp, [32]byte{'a'})
+	service.store.SetJustifiedCheckptAndPayloadHash(fcp, [32]byte{'b'})
 	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, bellatrixBlkRoot))
 
 	bellatrixState, _ := util.DeterministicGenesisStateBellatrix(t, 2)

beacon-chain/blockchain/init_sync_process_block.go

@@ -5,13 +5,13 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 )
 
 var errBlockNotFoundInCacheOrDB = errors.New("block not found in cache or db")
 
 // This saves a beacon block to the initial sync blocks cache.
-func (s *Service) saveInitSyncBlock(r [32]byte, b block.SignedBeaconBlock) {
+func (s *Service) saveInitSyncBlock(r [32]byte, b interfaces.SignedBeaconBlock) {
 	s.initSyncBlocksLock.Lock()
 	defer s.initSyncBlocksLock.Unlock()
 	s.initSyncBlocks[r] = b
@@ -36,7 +36,7 @@ func (s *Service) hasBlockInInitSyncOrDB(ctx context.Context, r [32]byte) bool {
 
 // Returns block for a given root `r` from either the initial sync blocks cache or the DB.
 // Error is returned if the block is not found in either cache or DB.
-func (s *Service) getBlock(ctx context.Context, r [32]byte) (block.SignedBeaconBlock, error) {
+func (s *Service) getBlock(ctx context.Context, r [32]byte) (interfaces.SignedBeaconBlock, error) {
 	s.initSyncBlocksLock.RLock()
 
 	// Check cache first because it's faster.
@@ -57,11 +57,11 @@ func (s *Service) getBlock(ctx context.Context, r [32]byte) (block.SignedBeaconB
 
 // This retrieves all the beacon blocks from the initial sync blocks cache, the returned
 // blocks are unordered.
-func (s *Service) getInitSyncBlocks() []block.SignedBeaconBlock {
+func (s *Service) getInitSyncBlocks() []interfaces.SignedBeaconBlock {
 	s.initSyncBlocksLock.RLock()
 	defer s.initSyncBlocksLock.RUnlock()
 
-	blks := make([]block.SignedBeaconBlock, 0, len(s.initSyncBlocks))
+	blks := make([]interfaces.SignedBeaconBlock, 0, len(s.initSyncBlocks))
 	for _, b := range s.initSyncBlocks {
 		blks = append(blks, b)
 	}
@@ -72,5 +72,5 @@ func (s *Service) getInitSyncBlocks() []block.SignedBeaconBlock {
 func (s *Service) clearInitSyncBlocks() {
 	s.initSyncBlocksLock.Lock()
 	defer s.initSyncBlocksLock.Unlock()
-	s.initSyncBlocks = make(map[[32]byte]block.SignedBeaconBlock)
+	s.initSyncBlocks = make(map[[32]byte]interfaces.SignedBeaconBlock)
 }

beacon-chain/blockchain/init_sync_process_block_test.go

@@ -5,7 +5,7 @@ import (
 	"testing"
 
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
 )

beacon-chain/blockchain/init_test.go

@@ -6,7 +6,7 @@ import (
 
 func init() {
 	// Override network name so that hardcoded genesis files are not loaded.
-	cfg := params.BeaconConfig()
-	cfg.ConfigName = "test"
-	params.OverrideBeaconConfig(cfg)
+	if err := params.SetActive(params.MainnetTestConfig()); err != nil {
+		panic(err)
+	}
 }

beacon-chain/blockchain/log.go

@@ -6,9 +6,9 @@ import (
 	"time"
 
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/runtime/version"
 	prysmTime "github.com/prysmaticlabs/prysm/time"
 	"github.com/prysmaticlabs/prysm/time/slots"
@@ -18,7 +18,7 @@ import (
 var log = logrus.WithField("prefix", "blockchain")
 
 // logs state transition related data every slot.
-func logStateTransitionData(b block.BeaconBlock) error {
+func logStateTransitionData(b interfaces.BeaconBlock) error {
 	log := log.WithField("slot", b.Slot())
 	if len(b.Body().Attestations()) > 0 {
 		log = log.WithField("attestations", len(b.Body().Attestations()))
@@ -54,7 +54,7 @@ func logStateTransitionData(b block.BeaconBlock) error {
 	return nil
 }
 
-func logBlockSyncStatus(block block.BeaconBlock, blockRoot [32]byte, finalized *ethpb.Checkpoint, receivedTime time.Time, genesisTime uint64) error {
+func logBlockSyncStatus(block interfaces.BeaconBlock, blockRoot [32]byte, finalized *ethpb.Checkpoint, receivedTime time.Time, genesisTime uint64) error {
 	startTime, err := slots.ToTime(genesisTime, block.Slot())
 	if err != nil {
 		return err

beacon-chain/blockchain/log_test.go

@@ -3,10 +3,10 @@ package blockchain
 import (
 	"testing"
 
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	enginev1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	logTest "github.com/sirupsen/logrus/hooks/test"
 )
@@ -25,57 +25,85 @@ func Test_logStateTransitionData(t *testing.T) {
 	require.NoError(t, err)
 	tests := []struct {
 		name string
-		b    block.BeaconBlock
+		b    func() interfaces.BeaconBlock
 		want string
 	}{
 		{name: "empty block body",
-			b:    wrapper.WrappedPhase0BeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{}}),
+			b: func() interfaces.BeaconBlock {
+				wb, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{}})
+				require.NoError(t, err)
+				return wb
+			},
 			want: "\"Finished applying state transition\" prefix=blockchain slot=0",
 		},
 		{name: "has attestation",
-			b:    wrapper.WrappedPhase0BeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{Attestations: []*ethpb.Attestation{{}}}}),
+			b: func() interfaces.BeaconBlock {
+				wb, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{Attestations: []*ethpb.Attestation{{}}}})
+				require.NoError(t, err)
+				return wb
+			},
 			want: "\"Finished applying state transition\" attestations=1 prefix=blockchain slot=0",
 		},
 		{name: "has deposit",
-			b: wrapper.WrappedPhase0BeaconBlock(
-				&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
-					Attestations: []*ethpb.Attestation{{}},
-					Deposits:     []*ethpb.Deposit{{}}}}),
+			b: func() interfaces.BeaconBlock {
+				wb, err := wrapper.WrappedBeaconBlock(
+					&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
+						Attestations: []*ethpb.Attestation{{}},
+						Deposits:     []*ethpb.Deposit{{}}}})
+				require.NoError(t, err)
+				return wb
+			},
 			want: "\"Finished applying state transition\" attestations=1 deposits=1 prefix=blockchain slot=0",
 		},
 		{name: "has attester slashing",
-			b: wrapper.WrappedPhase0BeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
-				AttesterSlashings: []*ethpb.AttesterSlashing{{}}}}),
+			b: func() interfaces.BeaconBlock {
+				wb, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
+					AttesterSlashings: []*ethpb.AttesterSlashing{{}}}})
+				require.NoError(t, err)
+				return wb
+			},
 			want: "\"Finished applying state transition\" attesterSlashings=1 prefix=blockchain slot=0",
 		},
 		{name: "has proposer slashing",
-			b: wrapper.WrappedPhase0BeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
-				ProposerSlashings: []*ethpb.ProposerSlashing{{}}}}),
+			b: func() interfaces.BeaconBlock {
+				wb, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
+					ProposerSlashings: []*ethpb.ProposerSlashing{{}}}})
+				require.NoError(t, err)
+				return wb
+			},
 			want: "\"Finished applying state transition\" prefix=blockchain proposerSlashings=1 slot=0",
 		},
 		{name: "has exit",
-			b: wrapper.WrappedPhase0BeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
-				VoluntaryExits: []*ethpb.SignedVoluntaryExit{{}}}}),
+			b: func() interfaces.BeaconBlock {
+				wb, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
+					VoluntaryExits: []*ethpb.SignedVoluntaryExit{{}}}})
+				require.NoError(t, err)
+				return wb
+			},
 			want: "\"Finished applying state transition\" prefix=blockchain slot=0 voluntaryExits=1",
 		},
 		{name: "has everything",
-			b: wrapper.WrappedPhase0BeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
-				Attestations:      []*ethpb.Attestation{{}},
-				Deposits:          []*ethpb.Deposit{{}},
-				AttesterSlashings: []*ethpb.AttesterSlashing{{}},
-				ProposerSlashings: []*ethpb.ProposerSlashing{{}},
-				VoluntaryExits:    []*ethpb.SignedVoluntaryExit{{}}}}),
+			b: func() interfaces.BeaconBlock {
+				wb, err := wrapper.WrappedBeaconBlock(&ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{
+					Attestations:      []*ethpb.Attestation{{}},
+					Deposits:          []*ethpb.Deposit{{}},
+					AttesterSlashings: []*ethpb.AttesterSlashing{{}},
+					ProposerSlashings: []*ethpb.ProposerSlashing{{}},
+					VoluntaryExits:    []*ethpb.SignedVoluntaryExit{{}}}})
+				require.NoError(t, err)
+				return wb
+			},
 			want: "\"Finished applying state transition\" attestations=1 attesterSlashings=1 deposits=1 prefix=blockchain proposerSlashings=1 slot=0 voluntaryExits=1",
 		},
 		{name: "has payload",
-			b:    wrappedPayloadBlk,
+			b:    func() interfaces.BeaconBlock { return wrappedPayloadBlk },
 			want: "\"Finished applying state transition\" payloadHash=0x010203 prefix=blockchain slot=0 syncBitsCount=0 txCount=2",
 		},
 	}
 	for _, tt := range tests {
 		hook := logTest.NewGlobal()
 		t.Run(tt.name, func(t *testing.T) {
-			require.NoError(t, logStateTransitionData(tt.b))
+			require.NoError(t, logStateTransitionData(tt.b()))
 			require.LogsContain(t, hook, tt.want)
 		})
 	}

beacon-chain/blockchain/metrics.go

@@ -10,10 +10,10 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/epoch/precompute"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/runtime/version"
 )
 
@@ -298,7 +298,7 @@ func reportEpochMetrics(ctx context.Context, postState, headState state.BeaconSt
 	return nil
 }
 
-func reportAttestationInclusion(blk block.BeaconBlock) {
+func reportAttestationInclusion(blk interfaces.BeaconBlock) {
 	for _, att := range blk.Body().Attestations() {
 		attestationInclusionDelay.Observe(float64(blk.Slot() - att.Data.Slot))
 	}

beacon-chain/blockchain/mock_test.go

@@ -21,7 +21,7 @@ func testServiceOptsWithDB(t *testing.T) []Option {
 	}
 }
 
-// warning: only use these opts when you are certain there are no db calls
+// WARNING: only use these opts when you are certain there are no db calls
 // in your code path. this is a lightweight way to satisfy the stategen/beacondb
 // initialization requirements w/o the overhead of db init.
 func testServiceOptsNoDB() []Option {

beacon-chain/blockchain/new_slot.go

@@ -42,17 +42,17 @@ func (s *Service) NewSlot(ctx context.Context, slot types.Slot) error {
 	}
 
 	// Update store.justified_checkpoint if a better checkpoint on the store.finalized_checkpoint chain
-	bj := s.store.BestJustifiedCheckpt()
-	if bj == nil {
-		return errNilBestJustifiedInStore
+	bj, err := s.store.BestJustifiedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get best justified checkpoint")
 	}
-	j := s.store.JustifiedCheckpt()
-	if j == nil {
-		return errNilJustifiedInStore
+	j, err := s.store.JustifiedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get justified checkpoint")
 	}
-	f := s.store.FinalizedCheckpt()
-	if f == nil {
-		return errNilFinalizedInStore
+	f, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get finalized checkpoint")
 	}
 	if bj.Epoch > j.Epoch {
 		finalizedSlot, err := slots.EpochStart(f.Epoch)
@@ -64,7 +64,11 @@ func (s *Service) NewSlot(ctx context.Context, slot types.Slot) error {
 			return err
 		}
 		if bytes.Equal(r, f.Root) {
-			s.store.SetJustifiedCheckpt(bj)
+			h, err := s.getPayloadHash(ctx, bj.Root)
+			if err != nil {
+				return err
+			}
+			s.store.SetJustifiedCheckptAndPayloadHash(bj, h)
 		}
 	}
 	return nil

beacon-chain/blockchain/new_slot_test.go

@@ -5,19 +5,22 @@ import (
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/beacon-chain/blockchain/store"
+	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
 	"github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/protoarray"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
 	"github.com/prysmaticlabs/prysm/config/params"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 )
 
 func TestService_newSlot(t *testing.T) {
 	beaconDB := testDB.SetupDB(t)
-	fcs := protoarray.New(0, 0, [32]byte{})
+	fcs := protoarray.New(0, 0, [32]byte{'a'})
 	opts := []Option{
 		WithDatabase(beaconDB),
 		WithStateGen(stategen.New(beaconDB)),
@@ -25,10 +28,18 @@ func TestService_newSlot(t *testing.T) {
 	}
 	ctx := context.Background()
 
+	genesisStateRoot := [32]byte{}
+	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
+	wsb, err := wrapper.WrappedSignedBeaconBlock(genesis)
+	require.NoError(t, err)
+	assert.NoError(t, beaconDB.SaveBlock(ctx, wsb))
+	bj, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err)
+
 	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 0, [32]byte{}, [32]byte{}, [32]byte{}, 0, 0))        // genesis
 	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 32, [32]byte{'a'}, [32]byte{}, [32]byte{}, 0, 0))    // finalized
 	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 64, [32]byte{'b'}, [32]byte{'a'}, [32]byte{}, 0, 0)) // justified
-	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 96, [32]byte{'c'}, [32]byte{'a'}, [32]byte{}, 0, 0)) // best justified
+	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 96, bj, [32]byte{'a'}, [32]byte{}, 0, 0))            // best justified
 	require.NoError(t, fcs.InsertOptimisticBlock(ctx, 97, [32]byte{'d'}, [32]byte{}, [32]byte{}, 0, 0))    // bad
 
 	type args struct {
@@ -48,7 +59,7 @@ func TestService_newSlot(t *testing.T) {
 				slot:          params.BeaconConfig().SlotsPerEpoch + 1,
 				finalized:     &ethpb.Checkpoint{Epoch: 1, Root: bytesutil.PadTo([]byte{'a'}, 32)},
 				justified:     &ethpb.Checkpoint{Epoch: 2, Root: bytesutil.PadTo([]byte{'b'}, 32)},
-				bestJustified: &ethpb.Checkpoint{Epoch: 3, Root: bytesutil.PadTo([]byte{'c'}, 32)},
+				bestJustified: &ethpb.Checkpoint{Epoch: 3, Root: bj[:]},
 				shouldEqual:   false,
 			},
 		},
@@ -58,7 +69,7 @@ func TestService_newSlot(t *testing.T) {
 				slot:          params.BeaconConfig().SlotsPerEpoch,
 				finalized:     &ethpb.Checkpoint{Epoch: 1, Root: bytesutil.PadTo([]byte{'a'}, 32)},
 				justified:     &ethpb.Checkpoint{Epoch: 3, Root: bytesutil.PadTo([]byte{'b'}, 32)},
-				bestJustified: &ethpb.Checkpoint{Epoch: 2, Root: bytesutil.PadTo([]byte{'c'}, 32)},
+				bestJustified: &ethpb.Checkpoint{Epoch: 2, Root: bj[:]},
 				shouldEqual:   false,
 			},
 		},
@@ -78,7 +89,7 @@ func TestService_newSlot(t *testing.T) {
 				slot:          params.BeaconConfig().SlotsPerEpoch,
 				finalized:     &ethpb.Checkpoint{Epoch: 1, Root: bytesutil.PadTo([]byte{'a'}, 32)},
 				justified:     &ethpb.Checkpoint{Epoch: 2, Root: bytesutil.PadTo([]byte{'b'}, 32)},
-				bestJustified: &ethpb.Checkpoint{Epoch: 3, Root: bytesutil.PadTo([]byte{'c'}, 32)},
+				bestJustified: &ethpb.Checkpoint{Epoch: 3, Root: bj[:]},
 				shouldEqual:   true,
 			},
 		},
@@ -92,9 +103,17 @@ func TestService_newSlot(t *testing.T) {
 
 		require.NoError(t, service.NewSlot(ctx, test.args.slot))
 		if test.args.shouldEqual {
-			require.DeepSSZEqual(t, service.store.BestJustifiedCheckpt(), service.store.JustifiedCheckpt())
+			bcp, err := service.store.BestJustifiedCheckpt()
+			require.NoError(t, err)
+			cp, err := service.store.JustifiedCheckpt()
+			require.NoError(t, err)
+			require.DeepSSZEqual(t, bcp, cp)
 		} else {
-			require.DeepNotSSZEqual(t, service.store.BestJustifiedCheckpt(), service.store.JustifiedCheckpt())
+			bcp, err := service.store.BestJustifiedCheckpt()
+			require.NoError(t, err)
+			cp, err := service.store.JustifiedCheckpt()
+			require.NoError(t, err)
+			require.DeepNotSSZEqual(t, bcp, cp)
 		}
 	}
 }

beacon-chain/blockchain/pow_block.go

@@ -12,10 +12,10 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	enginev1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/time/slots"
 	"github.com/sirupsen/logrus"
 )
@@ -37,7 +37,7 @@ import (
 //    assert pow_parent is not None
 //    # Check if `pow_block` is a valid terminal PoW block
 //    assert is_valid_terminal_pow_block(pow_block, pow_parent)
-func (s *Service) validateMergeBlock(ctx context.Context, b block.SignedBeaconBlock) error {
+func (s *Service) validateMergeBlock(ctx context.Context, b interfaces.SignedBeaconBlock) error {
 	if err := helpers.BeaconBlockIsNil(b); err != nil {
 		return err
 	}
@@ -64,8 +64,9 @@ func (s *Service) validateMergeBlock(ctx context.Context, b block.SignedBeaconBl
 		return err
 	}
 	if !valid {
-		return fmt.Errorf("invalid TTD, configTTD: %s, currentTTD: %s, parentTTD: %s",
+		err := fmt.Errorf("invalid TTD, configTTD: %s, currentTTD: %s, parentTTD: %s",
 			params.BeaconConfig().TerminalTotalDifficulty, mergeBlockTD, mergeBlockParentTD)
+		return invalidBlock{err}
 	}
 
 	log.WithFields(logrus.Fields{

beacon-chain/blockchain/pow_block_test.go

@@ -13,10 +13,10 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	enginev1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 )
 
@@ -144,7 +144,9 @@ func Test_validateMergeBlock(t *testing.T) {
 
 	cfg.TerminalTotalDifficulty = "1"
 	params.OverrideBeaconConfig(cfg)
-	require.ErrorContains(t, "invalid TTD, configTTD: 1, currentTTD: 2, parentTTD: 1", service.validateMergeBlock(ctx, b))
+	err = service.validateMergeBlock(ctx, b)
+	require.ErrorContains(t, "invalid TTD, configTTD: 1, currentTTD: 2, parentTTD: 1", err)
+	require.Equal(t, true, IsInvalidBlock(err))
 }
 
 func Test_getBlkParentHashAndTD(t *testing.T) {

beacon-chain/blockchain/process_attestation_test.go

@@ -13,9 +13,9 @@ import (
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
@@ -324,9 +324,9 @@ func TestStore_SaveCheckpointState(t *testing.T) {
 	r := [32]byte{'g'}
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, s, r))
 
-	service.store.SetJustifiedCheckpt(&ethpb.Checkpoint{Root: r[:]})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: r[:]}, [32]byte{'a'})
 	service.store.SetBestJustifiedCheckpt(&ethpb.Checkpoint{Root: r[:]})
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: r[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: r[:]}, [32]byte{'b'})
 	service.store.SetPrevFinalizedCheckpt(&ethpb.Checkpoint{Root: r[:]})
 
 	r = bytesutil.ToBytes32([]byte{'A'})
@@ -358,9 +358,9 @@ func TestStore_SaveCheckpointState(t *testing.T) {
 	assert.Equal(t, 2*params.BeaconConfig().SlotsPerEpoch, s2.Slot(), "Unexpected state slot")
 
 	require.NoError(t, s.SetSlot(params.BeaconConfig().SlotsPerEpoch+1))
-	service.store.SetJustifiedCheckpt(&ethpb.Checkpoint{Root: r[:]})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: r[:]}, [32]byte{'a'})
 	service.store.SetBestJustifiedCheckpt(&ethpb.Checkpoint{Root: r[:]})
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: r[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: r[:]}, [32]byte{'b'})
 	service.store.SetPrevFinalizedCheckpt(&ethpb.Checkpoint{Root: r[:]})
 	cp3 := &ethpb.Checkpoint{Epoch: 1, Root: bytesutil.PadTo([]byte{'C'}, fieldparams.RootLength)}
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, s, bytesutil.ToBytes32([]byte{'C'})))
@@ -500,7 +500,7 @@ func TestVerifyFinalizedConsistency_InconsistentRoot_ProtoArray(t *testing.T) {
 	r32, err := b32.Block.HashTreeRoot()
 	require.NoError(t, err)
 
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: 1})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: 1}, [32]byte{})
 	b33 := util.NewBeaconBlock()
 	b33.Block.Slot = 33
 	b33.Block.ParentRoot = r32[:]
@@ -535,7 +535,7 @@ func TestVerifyFinalizedConsistency_InconsistentRoot_DoublyLinkedTree(t *testing
 	r32, err := b32.Block.HashTreeRoot()
 	require.NoError(t, err)
 
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: 1})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: 1}, [32]byte{})
 	b33 := util.NewBeaconBlock()
 	b33.Block.Slot = 33
 	b33.Block.ParentRoot = r32[:]
@@ -564,7 +564,7 @@ func TestVerifyFinalizedConsistency_OK(t *testing.T) {
 	r32, err := b32.Block.HashTreeRoot()
 	require.NoError(t, err)
 
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: r32[:], Epoch: 1})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: r32[:], Epoch: 1}, [32]byte{})
 
 	b33 := util.NewBeaconBlock()
 	b33.Block.Slot = 33
@@ -591,7 +591,7 @@ func TestVerifyFinalizedConsistency_IsCanonical(t *testing.T) {
 	r32, err := b32.Block.HashTreeRoot()
 	require.NoError(t, err)
 
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: r32[:], Epoch: 1})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: r32[:], Epoch: 1}, [32]byte{})
 
 	b33 := util.NewBeaconBlock()
 	b33.Block.Slot = 33

beacon-chain/blockchain/process_block.go

@@ -16,13 +16,14 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/features"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
+	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/crypto/bls"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/monitoring/tracing"
 	ethpbv1 "github.com/prysmaticlabs/prysm/proto/eth/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/attestation"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/runtime/version"
 	"github.com/prysmaticlabs/prysm/time/slots"
 	"go.opencensus.io/trace"
@@ -88,11 +89,11 @@ var initialSyncBlockCacheSize = uint64(2 * params.BeaconConfig().SlotsPerEpoch)
 //            ancestor_at_finalized_slot = get_ancestor(store, store.justified_checkpoint.root, finalized_slot)
 //            if ancestor_at_finalized_slot != store.finalized_checkpoint.root:
 //                store.justified_checkpoint = state.current_justified_checkpoint
-func (s *Service) onBlock(ctx context.Context, signed block.SignedBeaconBlock, blockRoot [32]byte) error {
+func (s *Service) onBlock(ctx context.Context, signed interfaces.SignedBeaconBlock, blockRoot [32]byte) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.onBlock")
 	defer span.End()
 	if err := helpers.BeaconBlockIsNil(signed); err != nil {
-		return err
+		return invalidBlock{err}
 	}
 	b := signed.Block()
 
@@ -107,7 +108,7 @@ func (s *Service) onBlock(ctx context.Context, signed block.SignedBeaconBlock, b
 	}
 	postState, err := transition.ExecuteStateTransition(ctx, preState, signed)
 	if err != nil {
-		return err
+		return invalidBlock{err}
 	}
 	postStateVersion, postStateHeader, err := getStateVersionAndPayload(postState)
 	if err != nil {
@@ -122,10 +123,13 @@ func (s *Service) onBlock(ctx context.Context, signed block.SignedBeaconBlock, b
 			return err
 		}
 	}
-
+	if err := s.savePostStateInfo(ctx, blockRoot, signed, postState); err != nil {
+		return err
+	}
 	if err := s.insertBlockAndAttestationsToForkChoiceStore(ctx, signed.Block(), blockRoot, postState); err != nil {
 		return errors.Wrapf(err, "could not insert block %d to fork choice store", signed.Block().Slot())
 	}
+	s.insertSlashingsToForkChoiceStore(ctx, signed.Block().Body().AttesterSlashings())
 	if isValidPayload {
 		if err := s.cfg.ForkChoiceStore.SetOptimisticToValid(ctx, blockRoot); err != nil {
 			return errors.Wrap(err, "could not set optimistic block to valid")
@@ -144,9 +148,6 @@ func (s *Service) onBlock(ctx context.Context, signed block.SignedBeaconBlock, b
 		return err
 	}
 
-	if err := s.savePostStateInfo(ctx, blockRoot, signed, postState); err != nil {
-		return err
-	}
 	// If slasher is configured, forward the attestations in the block via
 	// an event feed for processing.
 	if features.Get().EnableSlasher {
@@ -175,9 +176,9 @@ func (s *Service) onBlock(ctx context.Context, signed block.SignedBeaconBlock, b
 	}
 
 	// Update justified check point.
-	justified := s.store.JustifiedCheckpt()
-	if justified == nil {
-		return errNilJustifiedInStore
+	justified, err := s.store.JustifiedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get justified checkpoint")
 	}
 	currJustifiedEpoch := justified.Epoch
 	if postState.CurrentJustifiedCheckpoint().Epoch > currJustifiedEpoch {
@@ -186,16 +187,29 @@ func (s *Service) onBlock(ctx context.Context, signed block.SignedBeaconBlock, b
 		}
 	}
 
-	finalized := s.store.FinalizedCheckpt()
+	finalized, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get finalized checkpoint")
+	}
 	if finalized == nil {
 		return errNilFinalizedInStore
 	}
 	newFinalized := postState.FinalizedCheckpointEpoch() > finalized.Epoch
 	if newFinalized {
 		s.store.SetPrevFinalizedCheckpt(finalized)
-		s.store.SetFinalizedCheckpt(postState.FinalizedCheckpoint())
+		cp := postState.FinalizedCheckpoint()
+		h, err := s.getPayloadHash(ctx, cp.Root)
+		if err != nil {
+			return err
+		}
+		s.store.SetFinalizedCheckptAndPayloadHash(cp, h)
 		s.store.SetPrevJustifiedCheckpt(justified)
-		s.store.SetJustifiedCheckpt(postState.CurrentJustifiedCheckpoint())
+		cp = postState.CurrentJustifiedCheckpoint()
+		h, err = s.getPayloadHash(ctx, cp.Root)
+		if err != nil {
+			return err
+		}
+		s.store.SetJustifiedCheckptAndPayloadHash(postState.CurrentJustifiedCheckpoint(), h)
 	}
 
 	balances, err := s.justifiedBalances.get(ctx, bytesutil.ToBytes32(justified.Root))
@@ -207,20 +221,7 @@ func (s *Service) onBlock(ctx context.Context, signed block.SignedBeaconBlock, b
 	if err != nil {
 		log.WithError(err).Warn("Could not update head")
 	}
-	headBlock, err := s.cfg.BeaconDB.Block(ctx, headRoot)
-	if err != nil {
-		return err
-	}
-	headState, err := s.cfg.StateGen.StateByRoot(ctx, headRoot)
-	if err != nil {
-		return err
-	}
-	if _, err := s.notifyForkchoiceUpdate(ctx, headState, headBlock.Block(), headRoot, bytesutil.ToBytes32(finalized.Root)); err != nil {
-		return err
-	}
-	if err := s.saveHead(ctx, headRoot, headBlock, headState); err != nil {
-		return errors.Wrap(err, "could not save head")
-	}
+	s.notifyEngineIfChangedHead(ctx, headRoot)
 
 	if err := s.pruneCanonicalAttsFromPool(ctx, blockRoot, signed); err != nil {
 		return err
@@ -316,7 +317,7 @@ func getStateVersionAndPayload(st state.BeaconState) (int, *ethpb.ExecutionPaylo
 	return preStateVersion, preStateHeader, nil
 }
 
-func (s *Service) onBlockBatch(ctx context.Context, blks []block.SignedBeaconBlock,
+func (s *Service) onBlockBatch(ctx context.Context, blks []interfaces.SignedBeaconBlock,
 	blockRoots [][32]byte) ([]*ethpb.Checkpoint, []*ethpb.Checkpoint, error) {
 	ctx, span := trace.StartSpan(ctx, "blockChain.onBlockBatch")
 	defer span.End()
@@ -330,7 +331,7 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []block.SignedBeaconBlo
 	}
 
 	if err := helpers.BeaconBlockIsNil(blks[0]); err != nil {
-		return nil, nil, err
+		return nil, nil, invalidBlock{err}
 	}
 	b := blks[0].Block()
 
@@ -373,7 +374,7 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []block.SignedBeaconBlo
 
 		set, preState, err = transition.ExecuteStateTransitionNoVerifyAnySig(ctx, preState, b)
 		if err != nil {
-			return nil, nil, err
+			return nil, nil, invalidBlock{err}
 		}
 		// Save potential boundary states.
 		if slots.IsEpochStart(preState.Slot()) {
@@ -394,7 +395,7 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []block.SignedBeaconBlo
 	}
 	verify, err := sigSet.Verify()
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, invalidBlock{err}
 	}
 	if !verify {
 		return nil, nil, errors.New("batch block signature verification failed")
@@ -424,6 +425,10 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []block.SignedBeaconBlo
 			}
 		}
 		s.saveInitSyncBlock(blockRoots[i], b)
+		if err = s.handleBlockAfterBatchVerify(ctx, b, blockRoots[i], fCheckpoints[i], jCheckpoints[i]); err != nil {
+			tracing.AnnotateError(span, err)
+			return nil, nil, err
+		}
 	}
 
 	for r, st := range boundaries {
@@ -437,8 +442,12 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []block.SignedBeaconBlo
 	if err := s.cfg.StateGen.SaveState(ctx, lastBR, preState); err != nil {
 		return nil, nil, err
 	}
-	f := fCheckpoints[len(fCheckpoints)-1]
-	if _, err := s.notifyForkchoiceUpdate(ctx, preState, lastB.Block(), lastBR, bytesutil.ToBytes32(f.Root)); err != nil {
+	arg := &notifyForkchoiceUpdateArg{
+		headState: preState,
+		headRoot:  lastBR,
+		headBlock: lastB.Block(),
+	}
+	if _, err := s.notifyForkchoiceUpdate(ctx, arg); err != nil {
 		return nil, nil, err
 	}
 	if err := s.saveHeadNoDB(ctx, lastB, lastBR, preState); err != nil {
@@ -449,7 +458,7 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []block.SignedBeaconBlo
 
 // handles a block after the block's batch has been verified, where we can save blocks
 // their state summaries and split them off to relative hot/cold storage.
-func (s *Service) handleBlockAfterBatchVerify(ctx context.Context, signed block.SignedBeaconBlock,
+func (s *Service) handleBlockAfterBatchVerify(ctx context.Context, signed interfaces.SignedBeaconBlock,
 	blockRoot [32]byte, fCheckpoint, jCheckpoint *ethpb.Checkpoint) error {
 
 	if err := s.cfg.BeaconDB.SaveStateSummary(ctx, &ethpb.StateSummary{
@@ -467,9 +476,9 @@ func (s *Service) handleBlockAfterBatchVerify(ctx context.Context, signed block.
 		s.clearInitSyncBlocks()
 	}
 
-	justified := s.store.JustifiedCheckpt()
-	if justified == nil {
-		return errNilJustifiedInStore
+	justified, err := s.store.JustifiedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get justified checkpoint")
 	}
 	if jCheckpoint.Epoch > justified.Epoch {
 		if err := s.updateJustifiedInitSync(ctx, jCheckpoint); err != nil {
@@ -477,7 +486,10 @@ func (s *Service) handleBlockAfterBatchVerify(ctx context.Context, signed block.
 		}
 	}
 
-	finalized := s.store.FinalizedCheckpt()
+	finalized, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get finalized checkpoint")
+	}
 	if finalized == nil {
 		return errNilFinalizedInStore
 	}
@@ -487,7 +499,11 @@ func (s *Service) handleBlockAfterBatchVerify(ctx context.Context, signed block.
 			return err
 		}
 		s.store.SetPrevFinalizedCheckpt(finalized)
-		s.store.SetFinalizedCheckpt(fCheckpoint)
+		h, err := s.getPayloadHash(ctx, fCheckpoint.Root)
+		if err != nil {
+			return err
+		}
+		s.store.SetFinalizedCheckptAndPayloadHash(fCheckpoint, h)
 	}
 	return nil
 }
@@ -498,15 +514,15 @@ func (s *Service) handleEpochBoundary(ctx context.Context, postState state.Beaco
 	defer span.End()
 
 	if postState.Slot()+1 == s.nextEpochBoundarySlot {
-		// Update caches for the next epoch at epoch boundary slot - 1.
-		if err := helpers.UpdateCommitteeCache(postState, coreTime.NextEpoch(postState)); err != nil {
-			return err
-		}
 		copied := postState.Copy()
 		copied, err := transition.ProcessSlots(ctx, copied, copied.Slot()+1)
 		if err != nil {
 			return err
 		}
+		// Update caches for the next epoch at epoch boundary slot - 1.
+		if err := helpers.UpdateCommitteeCache(copied, coreTime.CurrentEpoch(copied)); err != nil {
+			return err
+		}
 		if err := helpers.UpdateProposerIndicesInCache(ctx, copied); err != nil {
 			return err
 		}
@@ -535,7 +551,7 @@ func (s *Service) handleEpochBoundary(ctx context.Context, postState state.Beaco
 
 // This feeds in the block and block's attestations to fork choice store. It's allows fork choice store
 // to gain information on the most current chain.
-func (s *Service) insertBlockAndAttestationsToForkChoiceStore(ctx context.Context, blk block.BeaconBlock, root [32]byte,
+func (s *Service) insertBlockAndAttestationsToForkChoiceStore(ctx context.Context, blk interfaces.BeaconBlock, root [32]byte,
 	st state.BeaconState) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.insertBlockAndAttestationsToForkChoiceStore")
 	defer span.End()
@@ -560,7 +576,7 @@ func (s *Service) insertBlockAndAttestationsToForkChoiceStore(ctx context.Contex
 	return nil
 }
 
-func (s *Service) insertBlockToForkChoiceStore(ctx context.Context, blk block.BeaconBlock,
+func (s *Service) insertBlockToForkChoiceStore(ctx context.Context, blk interfaces.BeaconBlock,
 	root [32]byte, fCheckpoint, jCheckpoint *ethpb.Checkpoint) error {
 	if err := s.fillInForkChoiceMissingBlocks(ctx, blk, fCheckpoint, jCheckpoint); err != nil {
 		return err
@@ -577,7 +593,18 @@ func (s *Service) insertBlockToForkChoiceStore(ctx context.Context, blk block.Be
 		fCheckpoint.Epoch)
 }
 
-func getBlockPayloadHash(blk block.BeaconBlock) ([32]byte, error) {
+// Inserts attester slashing indices to fork choice store.
+// To call this function, it's caller's responsibility to ensure the slashing object is valid.
+func (s *Service) insertSlashingsToForkChoiceStore(ctx context.Context, slashings []*ethpb.AttesterSlashing) {
+	for _, slashing := range slashings {
+		indices := blocks.SlashableAttesterIndices(slashing)
+		for _, index := range indices {
+			s.ForkChoicer().InsertSlashedIndex(ctx, types.ValidatorIndex(index))
+		}
+	}
+}
+
+func getBlockPayloadHash(blk interfaces.BeaconBlock) ([32]byte, error) {
 	payloadHash := [32]byte{}
 	if blocks.IsPreBellatrixVersion(blk.Version()) {
 		return payloadHash, nil
@@ -591,7 +618,7 @@ func getBlockPayloadHash(blk block.BeaconBlock) ([32]byte, error) {
 
 // This saves post state info to DB or cache. This also saves post state info to fork choice store.
 // Post state info consists of processed block and state. Do not call this method unless the block and state are verified.
-func (s *Service) savePostStateInfo(ctx context.Context, r [32]byte, b block.SignedBeaconBlock, st state.BeaconState) error {
+func (s *Service) savePostStateInfo(ctx context.Context, r [32]byte, b interfaces.SignedBeaconBlock, st state.BeaconState) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.savePostStateInfo")
 	defer span.End()
 	if err := s.cfg.BeaconDB.SaveBlock(ctx, b); err != nil {
@@ -605,7 +632,7 @@ func (s *Service) savePostStateInfo(ctx context.Context, r [32]byte, b block.Sig
 
 // This removes the attestations from the mem pool. It will only remove the attestations if input root `r` is canonical,
 // meaning the block `b` is part of the canonical chain.
-func (s *Service) pruneCanonicalAttsFromPool(ctx context.Context, r [32]byte, b block.SignedBeaconBlock) error {
+func (s *Service) pruneCanonicalAttsFromPool(ctx context.Context, r [32]byte, b interfaces.SignedBeaconBlock) error {
 	if !features.Get().CorrectlyPruneCanonicalAtts {
 		return nil
 	}
@@ -634,7 +661,7 @@ func (s *Service) pruneCanonicalAttsFromPool(ctx context.Context, r [32]byte, b
 }
 
 // validateMergeTransitionBlock validates the merge transition block.
-func (s *Service) validateMergeTransitionBlock(ctx context.Context, stateVersion int, stateHeader *ethpb.ExecutionPayloadHeader, blk block.SignedBeaconBlock) error {
+func (s *Service) validateMergeTransitionBlock(ctx context.Context, stateVersion int, stateHeader *ethpb.ExecutionPayloadHeader, blk interfaces.SignedBeaconBlock) error {
 	// Skip validation if block is older than Bellatrix.
 	if blocks.IsPreBellatrixVersion(blk.Block().Version()) {
 		return nil
@@ -643,7 +670,7 @@ func (s *Service) validateMergeTransitionBlock(ctx context.Context, stateVersion
 	// Skip validation if block has an empty payload.
 	payload, err := blk.Block().Body().ExecutionPayload()
 	if err != nil {
-		return err
+		return invalidBlock{err}
 	}
 	if blocks.IsEmptyPayload(payload) {
 		return nil

beacon-chain/blockchain/process_block_helpers.go

@@ -9,12 +9,12 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	mathutil "github.com/prysmaticlabs/prysm/math"
 	"github.com/prysmaticlabs/prysm/monitoring/tracing"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/time/slots"
 	"go.opencensus.io/trace"
 )
@@ -27,7 +27,7 @@ func (s *Service) CurrentSlot() types.Slot {
 // getBlockPreState returns the pre state of an incoming block. It uses the parent root of the block
 // to retrieve the state in DB. It verifies the pre state's validity and the incoming block
 // is in the correct time window.
-func (s *Service) getBlockPreState(ctx context.Context, b block.BeaconBlock) (state.BeaconState, error) {
+func (s *Service) getBlockPreState(ctx context.Context, b interfaces.BeaconBlock) (state.BeaconState, error) {
 	ctx, span := trace.StartSpan(ctx, "blockChain.getBlockPreState")
 	defer span.End()
 
@@ -58,7 +58,7 @@ func (s *Service) getBlockPreState(ctx context.Context, b block.BeaconBlock) (st
 }
 
 // verifyBlkPreState validates input block has a valid pre-state.
-func (s *Service) verifyBlkPreState(ctx context.Context, b block.BeaconBlock) error {
+func (s *Service) verifyBlkPreState(ctx context.Context, b interfaces.BeaconBlock) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.verifyBlkPreState")
 	defer span.End()
 
@@ -92,18 +92,15 @@ func (s *Service) verifyBlkPreState(ctx context.Context, b block.BeaconBlock) er
 func (s *Service) VerifyFinalizedBlkDescendant(ctx context.Context, root [32]byte) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.VerifyFinalizedBlkDescendant")
 	defer span.End()
-	finalized := s.store.FinalizedCheckpt()
-	if finalized == nil {
-		return errNilFinalizedInStore
+	finalized, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get finalized checkpoint")
 	}
 	fRoot := s.ensureRootNotZeros(bytesutil.ToBytes32(finalized.Root))
-	finalizedBlkSigned, err := s.cfg.BeaconDB.Block(ctx, fRoot)
+	finalizedBlkSigned, err := s.getBlock(ctx, fRoot)
 	if err != nil {
 		return err
 	}
-	if finalizedBlkSigned == nil || finalizedBlkSigned.IsNil() || finalizedBlkSigned.Block().IsNil() {
-		return errors.New("nil finalized block")
-	}
 	finalizedBlk := finalizedBlkSigned.Block()
 	bFinalizedRoot, err := s.ancestor(ctx, root[:], finalizedBlk.Slot())
 	if err != nil {
@@ -118,24 +115,25 @@ func (s *Service) VerifyFinalizedBlkDescendant(ctx context.Context, root [32]byt
 			bytesutil.Trunc(root[:]), finalizedBlk.Slot(), bytesutil.Trunc(bFinalizedRoot),
 			bytesutil.Trunc(fRoot[:]))
 		tracing.AnnotateError(span, err)
-		return err
+		return invalidBlock{err}
 	}
 	return nil
 }
 
 // verifyBlkFinalizedSlot validates input block is not less than or equal
 // to current finalized slot.
-func (s *Service) verifyBlkFinalizedSlot(b block.BeaconBlock) error {
-	finalized := s.store.FinalizedCheckpt()
-	if finalized == nil {
-		return errNilFinalizedInStore
+func (s *Service) verifyBlkFinalizedSlot(b interfaces.BeaconBlock) error {
+	finalized, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get finalized checkpoint")
 	}
 	finalizedSlot, err := slots.EpochStart(finalized.Epoch)
 	if err != nil {
 		return err
 	}
 	if finalizedSlot >= b.Slot() {
-		return fmt.Errorf("block is equal or earlier than finalized block, slot %d < slot %d", b.Slot(), finalizedSlot)
+		err = fmt.Errorf("block is equal or earlier than finalized block, slot %d < slot %d", b.Slot(), finalizedSlot)
+		return invalidBlock{err}
 	}
 	return nil
 }
@@ -168,7 +166,10 @@ func (s *Service) shouldUpdateCurrentJustified(ctx context.Context, newJustified
 	if slots.SinceEpochStarts(s.CurrentSlot()) < params.BeaconConfig().SafeSlotsToUpdateJustified {
 		return true, nil
 	}
-	justified := s.store.JustifiedCheckpt()
+	justified, err := s.store.JustifiedCheckpt()
+	if err != nil {
+		return false, errors.Wrap(err, "could not get justified checkpoint")
+	}
 	jSlot, err := slots.EpochStart(justified.Epoch)
 	if err != nil {
 		return false, err
@@ -190,9 +191,9 @@ func (s *Service) updateJustified(ctx context.Context, state state.ReadOnlyBeaco
 	defer span.End()
 
 	cpt := state.CurrentJustifiedCheckpoint()
-	bestJustified := s.store.BestJustifiedCheckpt()
-	if bestJustified == nil {
-		return errNilBestJustifiedInStore
+	bestJustified, err := s.store.BestJustifiedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get best justified checkpoint")
 	}
 	if cpt.Epoch > bestJustified.Epoch {
 		s.store.SetBestJustifiedCheckpt(cpt)
@@ -203,12 +204,16 @@ func (s *Service) updateJustified(ctx context.Context, state state.ReadOnlyBeaco
 	}
 
 	if canUpdate {
-		justified := s.store.JustifiedCheckpt()
-		if justified == nil {
-			return errNilJustifiedInStore
+		justified, err := s.store.JustifiedCheckpt()
+		if err != nil {
+			return errors.Wrap(err, "could not get justified checkpoint")
 		}
 		s.store.SetPrevJustifiedCheckpt(justified)
-		s.store.SetJustifiedCheckpt(cpt)
+		h, err := s.getPayloadHash(ctx, cpt.Root)
+		if err != nil {
+			return err
+		}
+		s.store.SetJustifiedCheckptAndPayloadHash(cpt, h)
 	}
 
 	return nil
@@ -218,16 +223,20 @@ func (s *Service) updateJustified(ctx context.Context, state state.ReadOnlyBeaco
 // caches justified checkpoint balances for fork choice and save justified checkpoint in DB.
 // This method does not have defense against fork choice bouncing attack, which is why it's only recommend to be used during initial syncing.
 func (s *Service) updateJustifiedInitSync(ctx context.Context, cp *ethpb.Checkpoint) error {
-	justified := s.store.JustifiedCheckpt()
-	if justified == nil {
-		return errNilJustifiedInStore
+	justified, err := s.store.JustifiedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get justified checkpoint")
 	}
 	s.store.SetPrevJustifiedCheckpt(justified)
 
 	if err := s.cfg.BeaconDB.SaveJustifiedCheckpoint(ctx, cp); err != nil {
 		return err
 	}
-	s.store.SetJustifiedCheckpt(cp)
+	h, err := s.getPayloadHash(ctx, cp.Root)
+	if err != nil {
+		return err
+	}
+	s.store.SetJustifiedCheckptAndPayloadHash(cp, h)
 
 	return nil
 }
@@ -331,17 +340,17 @@ func (s *Service) ancestorByDB(ctx context.Context, r [32]byte, slot types.Slot)
 
 // This retrieves missing blocks from DB (ie. the blocks that couldn't be received over sync) and inserts them to fork choice store.
 // This is useful for block tree visualizer and additional vote accounting.
-func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, blk block.BeaconBlock,
+func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, blk interfaces.BeaconBlock,
 	fCheckpoint, jCheckpoint *ethpb.Checkpoint) error {
-	pendingNodes := make([]block.BeaconBlock, 0)
+	pendingNodes := make([]interfaces.BeaconBlock, 0)
 	pendingRoots := make([][32]byte, 0)
 
 	parentRoot := bytesutil.ToBytes32(blk.ParentRoot())
 	slot := blk.Slot()
 	// Fork choice only matters from last finalized slot.
-	finalized := s.store.FinalizedCheckpt()
-	if finalized == nil {
-		return errNilFinalizedInStore
+	finalized, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return err
 	}
 	fSlot, err := slots.EpochStart(finalized.Epoch)
 	if err != nil {
@@ -350,7 +359,7 @@ func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, blk block.B
 	higherThanFinalized := slot > fSlot
 	// As long as parent node is not in fork choice store, and parent node is in DB.
 	for !s.cfg.ForkChoiceStore.HasNode(parentRoot) && s.cfg.BeaconDB.HasBlock(ctx, parentRoot) && higherThanFinalized {
-		b, err := s.cfg.BeaconDB.Block(ctx, parentRoot)
+		b, err := s.getBlock(ctx, parentRoot)
 		if err != nil {
 			return err
 		}

beacon-chain/blockchain/process_block_test.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"math/big"
 	"strconv"
+	"sync"
 	"testing"
 	"time"
 
@@ -13,6 +14,7 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/beacon-chain/cache/depositcache"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
+	"github.com/prysmaticlabs/prysm/beacon-chain/core/signing"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/transition"
 	"github.com/prysmaticlabs/prysm/beacon-chain/db"
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
@@ -26,17 +28,19 @@ import (
 	"github.com/prysmaticlabs/prysm/config/features"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
+	"github.com/prysmaticlabs/prysm/crypto/bls"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	enginev1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/runtime/version"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
 	prysmTime "github.com/prysmaticlabs/prysm/time"
+	logTest "github.com/sirupsen/logrus/hooks/test"
 )
 
 func TestStore_OnBlock_ProtoArray(t *testing.T) {
@@ -127,9 +131,9 @@ func TestStore_OnBlock_ProtoArray(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			service.store.SetJustifiedCheckpt(&ethpb.Checkpoint{Root: validGenesisRoot[:]})
+			service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: validGenesisRoot[:]}, [32]byte{'a'})
 			service.store.SetBestJustifiedCheckpt(&ethpb.Checkpoint{Root: validGenesisRoot[:]})
-			service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: roots[0]})
+			service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: roots[0]}, [32]byte{'b'})
 			service.store.SetPrevFinalizedCheckpt(&ethpb.Checkpoint{Root: validGenesisRoot[:]})
 
 			root, err := tt.blk.Block.HashTreeRoot()
@@ -230,9 +234,9 @@ func TestStore_OnBlock_DoublyLinkedTree(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			service.store.SetJustifiedCheckpt(&ethpb.Checkpoint{Root: validGenesisRoot[:]})
+			service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: validGenesisRoot[:]}, [32]byte{'a'})
 			service.store.SetBestJustifiedCheckpt(&ethpb.Checkpoint{Root: validGenesisRoot[:]})
-			service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: roots[0]})
+			service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: roots[0]}, [32]byte{'b'})
 			service.store.SetPrevFinalizedCheckpt(&ethpb.Checkpoint{Root: validGenesisRoot[:]})
 
 			root, err := tt.blk.Block.HashTreeRoot()
@@ -287,7 +291,8 @@ func TestStore_OnBlockBatch_ProtoArray(t *testing.T) {
 	assert.NoError(t, beaconDB.SaveBlock(ctx, wsb))
 	gRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{'a'})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{'b'})
 
 	service.cfg.ForkChoiceStore = protoarray.New(0, 0, [32]byte{})
 	wsb, err = wrapper.WrappedSignedBeaconBlock(genesis)
@@ -298,7 +303,7 @@ func TestStore_OnBlockBatch_ProtoArray(t *testing.T) {
 
 	bState := st.Copy()
 
-	var blks []block.SignedBeaconBlock
+	var blks []interfaces.SignedBeaconBlock
 	var blkRoots [][32]byte
 	var firstState state.BeaconState
 	for i := 1; i < 10; i++ {
@@ -351,7 +356,8 @@ func TestStore_OnBlockBatch_DoublyLinkedTree(t *testing.T) {
 	assert.NoError(t, beaconDB.SaveBlock(ctx, wsb))
 	gRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{'a'})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{'b'})
 
 	service.cfg.ForkChoiceStore = doublylinkedtree.New(0, 0)
 	wsb, err = wrapper.WrappedSignedBeaconBlock(genesis)
@@ -362,7 +368,7 @@ func TestStore_OnBlockBatch_DoublyLinkedTree(t *testing.T) {
 
 	bState := st.Copy()
 
-	var blks []block.SignedBeaconBlock
+	var blks []interfaces.SignedBeaconBlock
 	var blkRoots [][32]byte
 	var firstState state.BeaconState
 	for i := 1; i < 10; i++ {
@@ -413,13 +419,15 @@ func TestStore_OnBlockBatch_NotifyNewPayload(t *testing.T) {
 	assert.NoError(t, beaconDB.SaveBlock(ctx, wsb))
 	gRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{'a'})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{'b'})
+
 	service.cfg.ForkChoiceStore = doublylinkedtree.New(0, 0)
 	service.saveInitSyncBlock(gRoot, wsb)
 	st, keys := util.DeterministicGenesisState(t, 64)
 	bState := st.Copy()
 
-	var blks []block.SignedBeaconBlock
+	var blks []interfaces.SignedBeaconBlock
 	var blkRoots [][32]byte
 	var firstState state.BeaconState
 	blkCount := 4
@@ -482,7 +490,7 @@ func TestRemoveStateSinceLastFinalized_EmptyStartSlot(t *testing.T) {
 
 	diff := params.BeaconConfig().SlotsPerEpoch.Sub(1).Mul(params.BeaconConfig().SecondsPerSlot)
 	service.genesisTime = time.Unix(time.Now().Unix()-int64(diff), 0)
-	service.store.SetJustifiedCheckpt(&ethpb.Checkpoint{Root: lastJustifiedRoot[:]})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: lastJustifiedRoot[:]}, [32]byte{'a'})
 	update, err = service.shouldUpdateCurrentJustified(ctx, &ethpb.Checkpoint{Root: newJustifiedRoot[:]})
 	require.NoError(t, err)
 	assert.Equal(t, true, update, "Should be able to update justified")
@@ -514,7 +522,7 @@ func TestShouldUpdateJustified_ReturnFalse_ProtoArray(t *testing.T) {
 
 	diff := params.BeaconConfig().SlotsPerEpoch.Sub(1).Mul(params.BeaconConfig().SecondsPerSlot)
 	service.genesisTime = time.Unix(time.Now().Unix()-int64(diff), 0)
-	service.store.SetJustifiedCheckpt(&ethpb.Checkpoint{Root: lastJustifiedRoot[:]})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: lastJustifiedRoot[:]}, [32]byte{'a'})
 
 	update, err := service.shouldUpdateCurrentJustified(ctx, &ethpb.Checkpoint{Root: newJustifiedRoot[:]})
 	require.NoError(t, err)
@@ -547,7 +555,7 @@ func TestShouldUpdateJustified_ReturnFalse_DoublyLinkedTree(t *testing.T) {
 
 	diff := params.BeaconConfig().SlotsPerEpoch.Sub(1).Mul(params.BeaconConfig().SecondsPerSlot)
 	service.genesisTime = time.Unix(time.Now().Unix()-int64(diff), 0)
-	service.store.SetJustifiedCheckpt(&ethpb.Checkpoint{Root: lastJustifiedRoot[:]})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: lastJustifiedRoot[:]}, [32]byte{'a'})
 
 	update, err := service.shouldUpdateCurrentJustified(ctx, &ethpb.Checkpoint{Root: newJustifiedRoot[:]})
 	require.NoError(t, err)
@@ -575,7 +583,7 @@ func TestCachedPreState_CanGetFromStateSummary_ProtoArray(t *testing.T) {
 	assert.NoError(t, beaconDB.SaveBlock(ctx, wsb))
 	gRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{})
 	service.cfg.ForkChoiceStore = protoarray.New(0, 0, [32]byte{})
 	wsb, err = wrapper.WrappedSignedBeaconBlock(genesis)
 	require.NoError(t, err)
@@ -586,7 +594,9 @@ func TestCachedPreState_CanGetFromStateSummary_ProtoArray(t *testing.T) {
 	b.Block.ParentRoot = gRoot[:]
 	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(ctx, &ethpb.StateSummary{Slot: 1, Root: gRoot[:]}))
 	require.NoError(t, service.cfg.StateGen.SaveState(ctx, gRoot, s))
-	require.NoError(t, service.verifyBlkPreState(ctx, wrapper.WrappedPhase0BeaconBlock(b.Block)))
+	wb, err := wrapper.WrappedBeaconBlock(b.Block)
+	require.NoError(t, err)
+	require.NoError(t, service.verifyBlkPreState(ctx, wb))
 }
 
 func TestCachedPreState_CanGetFromStateSummary_DoublyLinkedTree(t *testing.T) {
@@ -610,7 +620,7 @@ func TestCachedPreState_CanGetFromStateSummary_DoublyLinkedTree(t *testing.T) {
 	assert.NoError(t, beaconDB.SaveBlock(ctx, wsb))
 	gRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{})
 	service.cfg.ForkChoiceStore = doublylinkedtree.New(0, 0)
 	wsb, err = wrapper.WrappedSignedBeaconBlock(genesis)
 	require.NoError(t, err)
@@ -621,7 +631,9 @@ func TestCachedPreState_CanGetFromStateSummary_DoublyLinkedTree(t *testing.T) {
 	b.Block.ParentRoot = gRoot[:]
 	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(ctx, &ethpb.StateSummary{Slot: 1, Root: gRoot[:]}))
 	require.NoError(t, service.cfg.StateGen.SaveState(ctx, gRoot, s))
-	require.NoError(t, service.verifyBlkPreState(ctx, wrapper.WrappedPhase0BeaconBlock(b.Block)))
+	wb, err := wrapper.WrappedBeaconBlock(b.Block)
+	require.NoError(t, err)
+	require.NoError(t, service.verifyBlkPreState(ctx, wb))
 }
 
 func TestCachedPreState_CanGetFromDB(t *testing.T) {
@@ -642,7 +654,7 @@ func TestCachedPreState_CanGetFromDB(t *testing.T) {
 	assert.NoError(t, beaconDB.SaveBlock(ctx, wsb))
 	gRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{})
 	service.cfg.ForkChoiceStore = protoarray.New(0, 0, [32]byte{})
 	wsb, err = wrapper.WrappedSignedBeaconBlock(genesis)
 	require.NoError(t, err)
@@ -650,8 +662,10 @@ func TestCachedPreState_CanGetFromDB(t *testing.T) {
 
 	b := util.NewBeaconBlock()
 	b.Block.Slot = 1
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
-	err = service.verifyBlkPreState(ctx, wrapper.WrappedPhase0BeaconBlock(b.Block))
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{})
+	wb, err := wrapper.WrappedBeaconBlock(b.Block)
+	require.NoError(t, err)
+	err = service.verifyBlkPreState(ctx, wb)
 	wanted := "could not reconstruct parent state"
 	assert.ErrorContains(t, wanted, err)
 
@@ -683,7 +697,7 @@ func TestUpdateJustified_CouldUpdateBest(t *testing.T) {
 	require.NoError(t, beaconDB.SaveBlock(ctx, wsb))
 	r, err := signedBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetJustifiedCheckpt(&ethpb.Checkpoint{Root: []byte{'A'}})
+	service.store.SetJustifiedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: []byte{'A'}}, [32]byte{'a'})
 	service.store.SetBestJustifiedCheckpt(&ethpb.Checkpoint{Root: []byte{'A'}})
 	st, err := util.NewBeaconState()
 	require.NoError(t, err)
@@ -695,13 +709,17 @@ func TestUpdateJustified_CouldUpdateBest(t *testing.T) {
 	require.NoError(t, s.SetCurrentJustifiedCheckpoint(&ethpb.Checkpoint{Epoch: 1, Root: r[:]}))
 	require.NoError(t, service.updateJustified(context.Background(), s))
 
-	assert.Equal(t, s.CurrentJustifiedCheckpoint().Epoch, service.store.BestJustifiedCheckpt().Epoch, "Incorrect justified epoch in service")
+	cp, err := service.store.BestJustifiedCheckpt()
+	require.NoError(t, err)
+	assert.Equal(t, s.CurrentJustifiedCheckpoint().Epoch, cp.Epoch, "Incorrect justified epoch in service")
 
 	// Could not update
 	service.store.SetBestJustifiedCheckpt(&ethpb.Checkpoint{Root: []byte{'A'}, Epoch: 2})
 	require.NoError(t, service.updateJustified(context.Background(), s))
 
-	assert.Equal(t, types.Epoch(2), service.store.BestJustifiedCheckpt().Epoch, "Incorrect justified epoch in service")
+	cp, err = service.store.BestJustifiedCheckpt()
+	require.NoError(t, err)
+	assert.Equal(t, types.Epoch(2), cp.Epoch, "Incorrect justified epoch in service")
 }
 
 func TestFillForkChoiceMissingBlocks_CanSave_ProtoArray(t *testing.T) {
@@ -715,7 +733,7 @@ func TestFillForkChoiceMissingBlocks_CanSave_ProtoArray(t *testing.T) {
 	service, err := NewService(ctx, opts...)
 	require.NoError(t, err)
 	service.cfg.ForkChoiceStore = protoarray.New(0, 0, [32]byte{'A'})
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: make([]byte, 32)})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: make([]byte, 32)}, [32]byte{})
 
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
@@ -760,7 +778,7 @@ func TestFillForkChoiceMissingBlocks_CanSave_DoublyLinkedTree(t *testing.T) {
 	service, err := NewService(ctx, opts...)
 	require.NoError(t, err)
 	service.cfg.ForkChoiceStore = doublylinkedtree.New(0, 0)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: make([]byte, 32)})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: make([]byte, 32)}, [32]byte{})
 
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
@@ -806,7 +824,7 @@ func TestFillForkChoiceMissingBlocks_RootsMatch_ProtoArray(t *testing.T) {
 	service, err := NewService(ctx, opts...)
 	require.NoError(t, err)
 	service.cfg.ForkChoiceStore = protoarray.New(0, 0, [32]byte{'A'})
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: make([]byte, 32)})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: make([]byte, 32)}, [32]byte{})
 
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
@@ -855,7 +873,7 @@ func TestFillForkChoiceMissingBlocks_RootsMatch_DoublyLinkedTree(t *testing.T) {
 	service, err := NewService(ctx, opts...)
 	require.NoError(t, err)
 	service.cfg.ForkChoiceStore = doublylinkedtree.New(0, 0)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: make([]byte, 32)})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: make([]byte, 32)}, [32]byte{})
 
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
@@ -905,7 +923,7 @@ func TestFillForkChoiceMissingBlocks_FilterFinalized_ProtoArray(t *testing.T) {
 	require.NoError(t, err)
 	service.cfg.ForkChoiceStore = protoarray.New(0, 0, [32]byte{'A'})
 	// Set finalized epoch to 1.
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: 1})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: 1}, [32]byte{})
 
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
@@ -966,7 +984,7 @@ func TestFillForkChoiceMissingBlocks_FilterFinalized_DoublyLinkedTree(t *testing
 	require.NoError(t, err)
 	service.cfg.ForkChoiceStore = doublylinkedtree.New(0, 0)
 	// Set finalized epoch to 1.
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: 1})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: 1}, [32]byte{})
 
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
@@ -1304,16 +1322,17 @@ func TestVerifyBlkDescendant(t *testing.T) {
 		finalizedRoot [32]byte
 	}
 	tests := []struct {
-		name      string
-		args      args
-		wantedErr string
+		name             string
+		args             args
+		wantedErr        string
+		invalidBlockRoot bool
 	}{
 		{
 			name: "could not get finalized block in block service cache",
 			args: args{
 				finalizedRoot: [32]byte{'a'},
 			},
-			wantedErr: "nil finalized block",
+			wantedErr: "block not found in cache or db",
 		},
 		{
 			name: "could not get finalized block root in DB",
@@ -1329,7 +1348,8 @@ func TestVerifyBlkDescendant(t *testing.T) {
 				finalizedRoot: r1,
 				parentRoot:    r,
 			},
-			wantedErr: "is not a descendant of the current finalized block slot",
+			wantedErr:        "is not a descendant of the current finalized block slot",
+			invalidBlockRoot: true,
 		},
 		{
 			name: "is descendant",
@@ -1342,10 +1362,13 @@ func TestVerifyBlkDescendant(t *testing.T) {
 	for _, tt := range tests {
 		service, err := NewService(ctx, opts...)
 		require.NoError(t, err)
-		service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: tt.args.finalizedRoot[:]})
+		service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: tt.args.finalizedRoot[:]}, [32]byte{})
 		err = service.VerifyFinalizedBlkDescendant(ctx, tt.args.parentRoot)
 		if tt.wantedErr != "" {
 			assert.ErrorContains(t, tt.wantedErr, err)
+			if tt.invalidBlockRoot {
+				require.Equal(t, true, IsInvalidBlock(err))
+			}
 		} else if err != nil {
 			assert.NoError(t, err)
 		}
@@ -1370,14 +1393,18 @@ func TestUpdateJustifiedInitSync(t *testing.T) {
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, beaconState, gRoot))
 	service.originBlockRoot = gRoot
 	currentCp := &ethpb.Checkpoint{Epoch: 1}
-	service.store.SetJustifiedCheckpt(currentCp)
+	service.store.SetJustifiedCheckptAndPayloadHash(currentCp, [32]byte{'a'})
 	newCp := &ethpb.Checkpoint{Epoch: 2, Root: gRoot[:]}
 
 	require.NoError(t, service.updateJustifiedInitSync(ctx, newCp))
 
-	assert.DeepSSZEqual(t, currentCp, service.PreviousJustifiedCheckpt(), "Incorrect previous justified checkpoint")
-	assert.DeepSSZEqual(t, newCp, service.CurrentJustifiedCheckpt(), "Incorrect current justified checkpoint in cache")
-	cp, err := service.cfg.BeaconDB.JustifiedCheckpoint(ctx)
+	cp, err := service.PreviousJustifiedCheckpt()
+	require.NoError(t, err)
+	assert.DeepSSZEqual(t, currentCp, cp, "Incorrect previous justified checkpoint")
+	cp, err = service.CurrentJustifiedCheckpt()
+	require.NoError(t, err)
+	assert.DeepSSZEqual(t, newCp, cp, "Incorrect current justified checkpoint in cache")
+	cp, err = service.cfg.BeaconDB.JustifiedCheckpoint(ctx)
 	require.NoError(t, err)
 	assert.DeepSSZEqual(t, newCp, cp, "Incorrect current justified checkpoint in db")
 }
@@ -1431,7 +1458,7 @@ func TestOnBlock_CanFinalize(t *testing.T) {
 	require.NoError(t, err)
 	gRoot, err := gBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{})
 
 	testState := gs.Copy()
 	for i := types.Slot(1); i <= 4*params.BeaconConfig().SlotsPerEpoch; i++ {
@@ -1445,16 +1472,78 @@ func TestOnBlock_CanFinalize(t *testing.T) {
 		testState, err = service.cfg.StateGen.StateByRoot(ctx, r)
 		require.NoError(t, err)
 	}
-	require.Equal(t, types.Epoch(3), service.CurrentJustifiedCheckpt().Epoch)
-	require.Equal(t, types.Epoch(2), service.FinalizedCheckpt().Epoch)
+	cp, err := service.CurrentJustifiedCheckpt()
+	require.NoError(t, err)
+	require.Equal(t, types.Epoch(3), cp.Epoch)
+	cp, err = service.FinalizedCheckpt()
+	require.NoError(t, err)
+	require.Equal(t, types.Epoch(2), cp.Epoch)
 
 	// The update should persist in DB.
 	j, err := service.cfg.BeaconDB.JustifiedCheckpoint(ctx)
 	require.NoError(t, err)
-	require.Equal(t, j.Epoch, service.CurrentJustifiedCheckpt().Epoch)
+	cp, err = service.CurrentJustifiedCheckpt()
+	require.NoError(t, err)
+	require.Equal(t, j.Epoch, cp.Epoch)
 	f, err := service.cfg.BeaconDB.FinalizedCheckpoint(ctx)
 	require.NoError(t, err)
-	require.Equal(t, f.Epoch, service.FinalizedCheckpt().Epoch)
+	cp, err = service.FinalizedCheckpt()
+	require.NoError(t, err)
+	require.Equal(t, f.Epoch, cp.Epoch)
+}
+
+func TestOnBlock_NilBlock(t *testing.T) {
+	ctx := context.Background()
+	beaconDB := testDB.SetupDB(t)
+	fcs := protoarray.New(0, 0, [32]byte{'a'})
+	depositCache, err := depositcache.New()
+	require.NoError(t, err)
+	opts := []Option{
+		WithDatabase(beaconDB),
+		WithStateGen(stategen.New(beaconDB)),
+		WithForkChoiceStore(fcs),
+		WithDepositCache(depositCache),
+	}
+	service, err := NewService(ctx, opts...)
+	require.NoError(t, err)
+
+	err = service.onBlock(ctx, nil, [32]byte{})
+	require.Equal(t, true, IsInvalidBlock(err))
+}
+
+func TestOnBlock_InvalidSignature(t *testing.T) {
+	ctx := context.Background()
+	beaconDB := testDB.SetupDB(t)
+	fcs := protoarray.New(0, 0, [32]byte{'a'})
+	depositCache, err := depositcache.New()
+	require.NoError(t, err)
+	opts := []Option{
+		WithDatabase(beaconDB),
+		WithStateGen(stategen.New(beaconDB)),
+		WithForkChoiceStore(fcs),
+		WithDepositCache(depositCache),
+		WithStateNotifier(&mock.MockStateNotifier{}),
+	}
+	service, err := NewService(ctx, opts...)
+	require.NoError(t, err)
+
+	gs, keys := util.DeterministicGenesisState(t, 32)
+	require.NoError(t, service.saveGenesisData(ctx, gs))
+	gBlk, err := service.cfg.BeaconDB.GenesisBlock(ctx)
+	require.NoError(t, err)
+	gRoot, err := gBlk.Block().HashTreeRoot()
+	require.NoError(t, err)
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{})
+
+	blk, err := util.GenerateFullBlock(gs, keys, util.DefaultBlockGenConfig(), 1)
+	require.NoError(t, err)
+	blk.Signature = []byte{'a'} // Mutate the signature.
+	r, err := blk.Block.HashTreeRoot()
+	require.NoError(t, err)
+	wsb, err := wrapper.WrappedSignedBeaconBlock(blk)
+	require.NoError(t, err)
+	err = service.onBlock(ctx, wsb, r)
+	require.Equal(t, true, IsInvalidBlock(err))
 }
 
 func TestOnBlock_CallNewPayloadAndForkchoiceUpdated(t *testing.T) {
@@ -1485,7 +1574,7 @@ func TestOnBlock_CallNewPayloadAndForkchoiceUpdated(t *testing.T) {
 	require.NoError(t, err)
 	gRoot, err := gBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{})
 
 	testState := gs.Copy()
 	for i := types.Slot(1); i < params.BeaconConfig().SlotsPerEpoch; i++ {
@@ -1516,7 +1605,7 @@ func TestInsertFinalizedDeposits(t *testing.T) {
 	require.NoError(t, err)
 	gRoot, err := gBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{})
 	gs = gs.Copy()
 	assert.NoError(t, gs.SetEth1Data(&ethpb.Eth1Data{DepositCount: 10}))
 	assert.NoError(t, gs.SetEth1DepositIndex(8))
@@ -1555,7 +1644,7 @@ func TestInsertFinalizedDeposits_MultipleFinalizedRoutines(t *testing.T) {
 	require.NoError(t, err)
 	gRoot, err := gBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
-	service.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{})
 	gs = gs.Copy()
 	assert.NoError(t, gs.SetEth1Data(&ethpb.Eth1Data{DepositCount: 7}))
 	assert.NoError(t, gs.SetEth1DepositIndex(6))
@@ -1828,3 +1917,153 @@ func Test_validateMergeTransitionBlock(t *testing.T) {
 		})
 	}
 }
+
+func TestService_insertSlashingsToForkChoiceStore(t *testing.T) {
+	ctx := context.Background()
+	beaconDB := testDB.SetupDB(t)
+	fcs := protoarray.New(0, 0, [32]byte{'a'})
+	opts := []Option{
+		WithDatabase(beaconDB),
+		WithStateGen(stategen.New(beaconDB)),
+		WithForkChoiceStore(fcs),
+		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
+	}
+	service, err := NewService(ctx, opts...)
+	require.NoError(t, err)
+
+	beaconState, privKeys := util.DeterministicGenesisState(t, 100)
+	att1 := util.HydrateIndexedAttestation(&ethpb.IndexedAttestation{
+		Data: &ethpb.AttestationData{
+			Source: &ethpb.Checkpoint{Epoch: 1},
+		},
+		AttestingIndices: []uint64{0, 1},
+	})
+	domain, err := signing.Domain(beaconState.Fork(), 0, params.BeaconConfig().DomainBeaconAttester, beaconState.GenesisValidatorsRoot())
+	require.NoError(t, err)
+	signingRoot, err := signing.ComputeSigningRoot(att1.Data, domain)
+	assert.NoError(t, err, "Could not get signing root of beacon block header")
+	sig0 := privKeys[0].Sign(signingRoot[:])
+	sig1 := privKeys[1].Sign(signingRoot[:])
+	aggregateSig := bls.AggregateSignatures([]bls.Signature{sig0, sig1})
+	att1.Signature = aggregateSig.Marshal()
+
+	att2 := util.HydrateIndexedAttestation(&ethpb.IndexedAttestation{
+		AttestingIndices: []uint64{0, 1},
+	})
+	signingRoot, err = signing.ComputeSigningRoot(att2.Data, domain)
+	assert.NoError(t, err, "Could not get signing root of beacon block header")
+	sig0 = privKeys[0].Sign(signingRoot[:])
+	sig1 = privKeys[1].Sign(signingRoot[:])
+	aggregateSig = bls.AggregateSignatures([]bls.Signature{sig0, sig1})
+	att2.Signature = aggregateSig.Marshal()
+	slashings := []*ethpb.AttesterSlashing{
+		{
+			Attestation_1: att1,
+			Attestation_2: att2,
+		},
+	}
+	b := util.NewBeaconBlock()
+	b.Block.Body.AttesterSlashings = slashings
+	wb, err := wrapper.WrappedSignedBeaconBlock(b)
+	require.NoError(t, err)
+	service.insertSlashingsToForkChoiceStore(ctx, wb.Block().Body().AttesterSlashings())
+}
+
+func TestOnBlock_ProcessBlocksParallel(t *testing.T) {
+	ctx := context.Background()
+	beaconDB := testDB.SetupDB(t)
+	fcs := protoarray.New(0, 0, [32]byte{'a'})
+	depositCache, err := depositcache.New()
+	require.NoError(t, err)
+	opts := []Option{
+		WithDatabase(beaconDB),
+		WithStateGen(stategen.New(beaconDB)),
+		WithForkChoiceStore(fcs),
+		WithDepositCache(depositCache),
+		WithStateNotifier(&mock.MockStateNotifier{}),
+	}
+	service, err := NewService(ctx, opts...)
+	require.NoError(t, err)
+
+	gs, keys := util.DeterministicGenesisState(t, 32)
+	require.NoError(t, service.saveGenesisData(ctx, gs))
+	gBlk, err := service.cfg.BeaconDB.GenesisBlock(ctx)
+	require.NoError(t, err)
+	gRoot, err := gBlk.Block().HashTreeRoot()
+	require.NoError(t, err)
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{'a'})
+
+	blk1, err := util.GenerateFullBlock(gs, keys, util.DefaultBlockGenConfig(), 1)
+	require.NoError(t, err)
+	r1, err := blk1.Block.HashTreeRoot()
+	require.NoError(t, err)
+	wsb1, err := wrapper.WrappedSignedBeaconBlock(blk1)
+	require.NoError(t, err)
+	blk2, err := util.GenerateFullBlock(gs, keys, util.DefaultBlockGenConfig(), 2)
+	require.NoError(t, err)
+	r2, err := blk2.Block.HashTreeRoot()
+	require.NoError(t, err)
+	wsb2, err := wrapper.WrappedSignedBeaconBlock(blk2)
+	require.NoError(t, err)
+	blk3, err := util.GenerateFullBlock(gs, keys, util.DefaultBlockGenConfig(), 3)
+	require.NoError(t, err)
+	r3, err := blk3.Block.HashTreeRoot()
+	require.NoError(t, err)
+	wsb3, err := wrapper.WrappedSignedBeaconBlock(blk3)
+	require.NoError(t, err)
+	blk4, err := util.GenerateFullBlock(gs, keys, util.DefaultBlockGenConfig(), 4)
+	require.NoError(t, err)
+	r4, err := blk4.Block.HashTreeRoot()
+	require.NoError(t, err)
+	wsb4, err := wrapper.WrappedSignedBeaconBlock(blk4)
+	require.NoError(t, err)
+
+	logHook := logTest.NewGlobal()
+	for i := 0; i < 10; i++ {
+		var wg sync.WaitGroup
+		wg.Add(4)
+		go func() {
+			require.NoError(t, service.onBlock(ctx, wsb1, r1))
+			wg.Done()
+		}()
+		go func() {
+			require.NoError(t, service.onBlock(ctx, wsb2, r2))
+			wg.Done()
+		}()
+		go func() {
+			require.NoError(t, service.onBlock(ctx, wsb3, r3))
+			wg.Done()
+		}()
+		go func() {
+			require.NoError(t, service.onBlock(ctx, wsb4, r4))
+			wg.Done()
+		}()
+		wg.Wait()
+		require.LogsDoNotContain(t, logHook, "New head does not exist in DB. Do nothing")
+		require.NoError(t, service.cfg.BeaconDB.DeleteBlock(ctx, r1))
+		require.NoError(t, service.cfg.BeaconDB.DeleteBlock(ctx, r2))
+		require.NoError(t, service.cfg.BeaconDB.DeleteBlock(ctx, r3))
+		require.NoError(t, service.cfg.BeaconDB.DeleteBlock(ctx, r4))
+		service.cfg.ForkChoiceStore = protoarray.New(0, 0, [32]byte{'a'})
+	}
+}
+
+func Test_verifyBlkFinalizedSlot_invalidBlock(t *testing.T) {
+	ctx := context.Background()
+	beaconDB := testDB.SetupDB(t)
+
+	fcs := protoarray.New(0, 0, [32]byte{'a'})
+	opts := []Option{
+		WithDatabase(beaconDB),
+		WithStateGen(stategen.New(beaconDB)),
+		WithForkChoiceStore(fcs),
+	}
+	service, err := NewService(ctx, opts...)
+	require.NoError(t, err)
+	service.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: 1}, [32]byte{'a'})
+	blk := util.HydrateBeaconBlock(&ethpb.BeaconBlock{Slot: 1})
+	wb, err := wrapper.WrappedBeaconBlock(blk)
+	require.NoError(t, err)
+	err = service.verifyBlkFinalizedSlot(wb)
+	require.Equal(t, true, IsInvalidBlock(err))
+}

beacon-chain/blockchain/receive_attestation.go

@@ -71,9 +71,9 @@ func (s *Service) VerifyFinalizedConsistency(ctx context.Context, root []byte) e
 		return nil
 	}
 
-	f := s.FinalizedCheckpt()
-	if f == nil {
-		return errNilFinalizedInStore
+	f, err := s.FinalizedCheckpt()
+	if err != nil {
+		return err
 	}
 	ss, err := slots.EpochStart(f.Epoch)
 	if err != nil {
@@ -128,54 +128,63 @@ func (s *Service) spawnProcessAttestationsRoutine(stateFeed *event.Feed) {
 					return
 				}
 
-				// Continue when there's no fork choice attestation, there's nothing to process and update head.
-				// This covers the condition when the node is still initial syncing to the head of the chain.
-				if s.cfg.AttPool.ForkchoiceAttestationCount() == 0 {
-					continue
+				if err := s.UpdateHead(s.ctx); err != nil {
+					log.WithError(err).Error("Could not process attestations and update head")
+					return
 				}
-				s.processAttestations(s.ctx)
-
-				justified := s.store.JustifiedCheckpt()
-				if justified == nil {
-					log.WithError(errNilJustifiedInStore).Error("Could not get justified checkpoint")
-					continue
-				}
-				balances, err := s.justifiedBalances.get(s.ctx, bytesutil.ToBytes32(justified.Root))
-				if err != nil {
-					log.WithError(err).Errorf("Unable to get justified balances for root %v", justified.Root)
-					continue
-				}
-				newHeadRoot, err := s.updateHead(s.ctx, balances)
-				if err != nil {
-					log.WithError(err).Warn("Resolving fork due to new attestation")
-				}
-				s.notifyEngineIfChangedHead(s.ctx, newHeadRoot)
 			}
 		}
 	}()
 }
 
+// UpdateHead updates the canonical head of the chain based on information from fork-choice attestations and votes.
+// It requires no external inputs.
+func (s *Service) UpdateHead(ctx context.Context) error {
+	// Continue when there's no fork choice attestation, there's nothing to process and update head.
+	// This covers the condition when the node is still initial syncing to the head of the chain.
+	if s.cfg.AttPool.ForkchoiceAttestationCount() == 0 {
+		return nil
+	}
+
+	// Only one process can process attestations and update head at a time.
+	s.processAttestationsLock.Lock()
+	defer s.processAttestationsLock.Unlock()
+
+	s.processAttestations(ctx)
+
+	justified, err := s.store.JustifiedCheckpt()
+	if err != nil {
+		return err
+	}
+	balances, err := s.justifiedBalances.get(ctx, bytesutil.ToBytes32(justified.Root))
+	if err != nil {
+		return err
+	}
+	newHeadRoot, err := s.updateHead(ctx, balances)
+	if err != nil {
+		log.WithError(err).Warn("Resolving fork due to new attestation")
+	}
+	if s.headRoot() != newHeadRoot {
+		log.WithFields(logrus.Fields{
+			"oldHeadRoot": fmt.Sprintf("%#x", s.headRoot()),
+			"newHeadRoot": fmt.Sprintf("%#x", newHeadRoot),
+		}).Debug("Head changed due to attestations")
+	}
+	s.notifyEngineIfChangedHead(ctx, newHeadRoot)
+	return nil
+}
+
 // This calls notify Forkchoice Update in the event that the head has changed
 func (s *Service) notifyEngineIfChangedHead(ctx context.Context, newHeadRoot [32]byte) {
-	if s.headRoot() == newHeadRoot {
+	if newHeadRoot == [32]byte{} || s.headRoot() == newHeadRoot {
 		return
 	}
-	log.WithFields(logrus.Fields{
-		"oldHeadRoot": fmt.Sprintf("%#x", s.headRoot()),
-		"newHeadRoot": fmt.Sprintf("%#x", newHeadRoot),
-	}).Debug("Head changed due to attestations")
 
 	if !s.hasBlockInInitSyncOrDB(ctx, newHeadRoot) {
 		log.Debug("New head does not exist in DB. Do nothing")
 		return // We don't have the block, don't notify the engine and update head.
 	}
 
-	finalized := s.store.FinalizedCheckpt()
-	if finalized == nil {
-		log.WithError(errNilFinalizedInStore).Error("could not get finalized checkpoint")
-		return
-	}
-
 	newHeadBlock, err := s.getBlock(ctx, newHeadRoot)
 	if err != nil {
 		log.WithError(err).Error("Could not get new head block")
@@ -186,12 +195,12 @@ func (s *Service) notifyEngineIfChangedHead(ctx context.Context, newHeadRoot [32
 		log.WithError(err).Error("Could not get state from db")
 		return
 	}
-	_, err = s.notifyForkchoiceUpdate(s.ctx,
-		headState,
-		newHeadBlock.Block(),
-		newHeadRoot,
-		bytesutil.ToBytes32(finalized.Root),
-	)
+	arg := &notifyForkchoiceUpdateArg{
+		headState: headState,
+		headRoot:  newHeadRoot,
+		headBlock: newHeadBlock.Block(),
+	}
+	_, err = s.notifyForkchoiceUpdate(s.ctx, arg)
 	if err != nil {
 		log.WithError(err).Error("could not notify forkchoice update")
 	}

beacon-chain/blockchain/receive_attestation_test.go

@@ -12,9 +12,9 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/operations/attestations"
 	"github.com/prysmaticlabs/prysm/config/params"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
 	prysmTime "github.com/prysmaticlabs/prysm/time"
@@ -137,14 +137,14 @@ func TestNotifyEngineIfChangedHead(t *testing.T) {
 	service.cfg.ProposerSlotIndexCache = cache.NewProposerPayloadIDsCache()
 	service.notifyEngineIfChangedHead(ctx, service.headRoot())
 	hookErr := "could not notify forkchoice update"
-	finalizedErr := "could not get finalized checkpoint"
-	require.LogsDoNotContain(t, hook, finalizedErr)
+	invalidStateErr := "Could not get state from db"
+	require.LogsDoNotContain(t, hook, invalidStateErr)
 	require.LogsDoNotContain(t, hook, hookErr)
 	gb, err := wrapper.WrappedSignedBeaconBlock(util.NewBeaconBlock())
 	require.NoError(t, err)
 	service.saveInitSyncBlock([32]byte{'a'}, gb)
 	service.notifyEngineIfChangedHead(ctx, [32]byte{'a'})
-	require.LogsContain(t, hook, finalizedErr)
+	require.LogsContain(t, hook, invalidStateErr)
 
 	hook.Reset()
 	service.head = &head{
@@ -169,9 +169,9 @@ func TestNotifyEngineIfChangedHead(t *testing.T) {
 		state: st,
 	}
 	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(2, 1, [8]byte{1})
-	service.store.SetFinalizedCheckpt(finalized)
+	service.store.SetFinalizedCheckptAndPayloadHash(finalized, [32]byte{})
 	service.notifyEngineIfChangedHead(ctx, r1)
-	require.LogsDoNotContain(t, hook, finalizedErr)
+	require.LogsDoNotContain(t, hook, invalidStateErr)
 	require.LogsDoNotContain(t, hook, hookErr)
 
 	// Block in DB
@@ -191,12 +191,51 @@ func TestNotifyEngineIfChangedHead(t *testing.T) {
 		state: st,
 	}
 	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(2, 1, [8]byte{1})
-	service.store.SetFinalizedCheckpt(finalized)
+	service.store.SetFinalizedCheckptAndPayloadHash(finalized, [32]byte{})
 	service.notifyEngineIfChangedHead(ctx, r1)
-	require.LogsDoNotContain(t, hook, finalizedErr)
+	require.LogsDoNotContain(t, hook, invalidStateErr)
 	require.LogsDoNotContain(t, hook, hookErr)
 	vId, payloadID, has := service.cfg.ProposerSlotIndexCache.GetProposerPayloadIDs(2)
 	require.Equal(t, true, has)
 	require.Equal(t, types.ValidatorIndex(1), vId)
 	require.Equal(t, [8]byte{1}, payloadID)
+
+	// Test zero headRoot returns immediately.
+	headRoot := service.headRoot()
+	service.notifyEngineIfChangedHead(ctx, [32]byte{})
+	require.Equal(t, service.headRoot(), headRoot)
+}
+
+func TestService_ProcessAttestationsAndUpdateHead(t *testing.T) {
+	ctx := context.Background()
+	opts := testServiceOptsWithDB(t)
+	opts = append(opts, WithAttestationPool(attestations.NewPool()), WithStateNotifier(&mockBeaconNode{}))
+
+	service, err := NewService(ctx, opts...)
+	require.NoError(t, err)
+	service.genesisTime = prysmTime.Now().Add(-1 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second)
+	genesisState, pks := util.DeterministicGenesisState(t, 64)
+	require.NoError(t, genesisState.SetGenesisTime(uint64(prysmTime.Now().Unix())-params.BeaconConfig().SecondsPerSlot))
+	require.NoError(t, service.saveGenesisData(ctx, genesisState))
+	atts, err := util.GenerateAttestations(genesisState, pks, 1, 0, false)
+	require.NoError(t, err)
+	tRoot := bytesutil.ToBytes32(atts[0].Data.Target.Root)
+	copied := genesisState.Copy()
+	copied, err = transition.ProcessSlots(ctx, copied, 1)
+	require.NoError(t, err)
+	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, copied, tRoot))
+	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(ctx, &ethpb.StateSummary{Root: tRoot[:]}))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertOptimisticBlock(ctx, 0, tRoot, tRoot, params.BeaconConfig().ZeroHash, 1, 1))
+	require.NoError(t, service.cfg.AttPool.SaveForkchoiceAttestations(atts))
+	b := util.NewBeaconBlock()
+	wb, err := wrapper.WrappedSignedBeaconBlock(b)
+	require.NoError(t, err)
+	r, err := b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, service.cfg.BeaconDB.SaveBlock(ctx, wb))
+	service.head.root = r // Old head
+	require.Equal(t, 1, len(service.cfg.AttPool.ForkchoiceAttestations()))
+	require.NoError(t, err, service.UpdateHead(ctx))
+	require.Equal(t, tRoot, service.head.root)                             // Validate head is the new one
+	require.Equal(t, 0, len(service.cfg.AttPool.ForkchoiceAttestations())) // Validate att pool is empty
 }

beacon-chain/blockchain/receive_block.go

@@ -6,9 +6,10 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/feed"
 	statefeed "github.com/prysmaticlabs/prysm/beacon-chain/core/feed/state"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/monitoring/tracing"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
+	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/time"
 	"github.com/prysmaticlabs/prysm/time/slots"
 	"go.opencensus.io/trace"
@@ -19,17 +20,22 @@ var epochsSinceFinalitySaveHotStateDB = types.Epoch(100)
 
 // BlockReceiver interface defines the methods of chain service for receiving and processing new blocks.
 type BlockReceiver interface {
-	ReceiveBlock(ctx context.Context, block block.SignedBeaconBlock, blockRoot [32]byte) error
-	ReceiveBlockBatch(ctx context.Context, blocks []block.SignedBeaconBlock, blkRoots [][32]byte) error
-	HasInitSyncBlock(root [32]byte) bool
+	ReceiveBlock(ctx context.Context, block interfaces.SignedBeaconBlock, blockRoot [32]byte) error
+	ReceiveBlockBatch(ctx context.Context, blocks []interfaces.SignedBeaconBlock, blkRoots [][32]byte) error
+	HasBlock(ctx context.Context, root [32]byte) bool
 }
 
-// ReceiveBlock is a function that defines the the operations (minus pubsub)
-// that are performed on blocks that is received from regular sync service. The operations consists of:
-//   1. Validate block, apply state transition and update check points
+// SlashingReceiver interface defines the methods of chain service for receiving validated slashing over the wire.
+type SlashingReceiver interface {
+	ReceiveAttesterSlashing(ctx context.Context, slashings *ethpb.AttesterSlashing)
+}
+
+// ReceiveBlock is a function that defines the operations (minus pubsub)
+// that are performed on a received block. The operations consist of:
+//   1. Validate block, apply state transition and update checkpoints
 //   2. Apply fork choice to the processed block
 //   3. Save latest head info
-func (s *Service) ReceiveBlock(ctx context.Context, block block.SignedBeaconBlock, blockRoot [32]byte) error {
+func (s *Service) ReceiveBlock(ctx context.Context, block interfaces.SignedBeaconBlock, blockRoot [32]byte) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.ReceiveBlock")
 	defer span.End()
 	receivedTime := time.Now()
@@ -53,9 +59,9 @@ func (s *Service) ReceiveBlock(ctx context.Context, block block.SignedBeaconBloc
 	}
 
 	// Reports on block and fork choice metrics.
-	finalized := s.store.FinalizedCheckpt()
-	if finalized == nil {
-		return errNilFinalizedInStore
+	finalized, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get finalized checkpoint")
 	}
 	reportSlotMetrics(blockCopy.Block().Slot(), s.HeadSlot(), s.CurrentSlot(), finalized)
 
@@ -74,12 +80,12 @@ func (s *Service) ReceiveBlock(ctx context.Context, block block.SignedBeaconBloc
 // ReceiveBlockBatch processes the whole block batch at once, assuming the block batch is linear ,transitioning
 // the state, performing batch verification of all collected signatures and then performing the appropriate
 // actions for a block post-transition.
-func (s *Service) ReceiveBlockBatch(ctx context.Context, blocks []block.SignedBeaconBlock, blkRoots [][32]byte) error {
+func (s *Service) ReceiveBlockBatch(ctx context.Context, blocks []interfaces.SignedBeaconBlock, blkRoots [][32]byte) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.ReceiveBlockBatch")
 	defer span.End()
 
 	// Apply state transition on the incoming newly received block batches, one by one.
-	fCheckpoints, jCheckpoints, err := s.onBlockBatch(ctx, blocks, blkRoots)
+	_, _, err := s.onBlockBatch(ctx, blocks, blkRoots)
 	if err != nil {
 		err := errors.Wrap(err, "could not process block in batch")
 		tracing.AnnotateError(span, err)
@@ -88,10 +94,6 @@ func (s *Service) ReceiveBlockBatch(ctx context.Context, blocks []block.SignedBe
 
 	for i, b := range blocks {
 		blockCopy := b.Copy()
-		if err = s.handleBlockAfterBatchVerify(ctx, blockCopy, blkRoots[i], fCheckpoints[i], jCheckpoints[i]); err != nil {
-			tracing.AnnotateError(span, err)
-			return err
-		}
 		// Send notification of the processed block to the state feed.
 		s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
 			Type: statefeed.BlockProcessed,
@@ -104,9 +106,9 @@ func (s *Service) ReceiveBlockBatch(ctx context.Context, blocks []block.SignedBe
 		})
 
 		// Reports on blockCopy and fork choice metrics.
-		finalized := s.store.FinalizedCheckpt()
-		if finalized == nil {
-			return errNilFinalizedInStore
+		finalized, err := s.store.FinalizedCheckpt()
+		if err != nil {
+			return errors.Wrap(err, "could not get finalized checkpoint")
 		}
 		reportSlotMetrics(blockCopy.Block().Slot(), s.HeadSlot(), s.CurrentSlot(), finalized)
 	}
@@ -114,7 +116,10 @@ func (s *Service) ReceiveBlockBatch(ctx context.Context, blocks []block.SignedBe
 	if err := s.cfg.BeaconDB.SaveBlocks(ctx, s.getInitSyncBlocks()); err != nil {
 		return err
 	}
-	finalized := s.store.FinalizedCheckpt()
+	finalized, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return errors.Wrap(err, "could not get finalized checkpoint")
+	}
 	if finalized == nil {
 		return errNilFinalizedInStore
 	}
@@ -128,12 +133,17 @@ func (s *Service) ReceiveBlockBatch(ctx context.Context, blocks []block.SignedBe
 	return nil
 }
 
-// HasInitSyncBlock returns true if the block of the input root exists in initial sync blocks cache.
-func (s *Service) HasInitSyncBlock(root [32]byte) bool {
-	return s.hasInitSyncBlock(root)
+// HasBlock returns true if the block of the input root exists in initial sync blocks cache or DB.
+func (s *Service) HasBlock(ctx context.Context, root [32]byte) bool {
+	return s.hasBlockInInitSyncOrDB(ctx, root)
 }
 
-func (s *Service) handlePostBlockOperations(b block.BeaconBlock) error {
+// ReceiveAttesterSlashing receives an attester slashing and inserts it to forkchoice
+func (s *Service) ReceiveAttesterSlashing(ctx context.Context, slashing *ethpb.AttesterSlashing) {
+	s.insertSlashingsToForkChoiceStore(ctx, []*ethpb.AttesterSlashing{slashing})
+}
+
+func (s *Service) handlePostBlockOperations(b interfaces.BeaconBlock) error {
 	// Delete the processed block attestations from attestation pool.
 	if err := s.deletePoolAtts(b.Body().Attestations()); err != nil {
 		return err
@@ -162,7 +172,10 @@ func (s *Service) checkSaveHotStateDB(ctx context.Context) error {
 	currentEpoch := slots.ToEpoch(s.CurrentSlot())
 	// Prevent `sinceFinality` going underflow.
 	var sinceFinality types.Epoch
-	finalized := s.store.FinalizedCheckpt()
+	finalized, err := s.store.FinalizedCheckpt()
+	if err != nil {
+		return err
+	}
 	if finalized == nil {
 		return errNilFinalizedInStore
 	}

beacon-chain/blockchain/receive_block_test.go

@@ -13,11 +13,11 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/operations/voluntaryexits"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
@@ -34,7 +34,7 @@ func TestService_ReceiveBlock(t *testing.T) {
 		return blk
 	}
 	params.SetupTestConfigCleanup(t)
-	bc := params.BeaconConfig()
+	bc := params.BeaconConfig().Copy()
 	bc.ShardCommitteePeriod = 0 // Required for voluntary exits test in reasonable time.
 	params.OverrideBeaconConfig(bc)
 
@@ -141,7 +141,8 @@ func TestService_ReceiveBlock(t *testing.T) {
 			require.NoError(t, err)
 			gRoot, err := gBlk.Block().HashTreeRoot()
 			require.NoError(t, err)
-			s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+			h := [32]byte{'a'}
+			s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, h)
 			root, err := tt.args.block.Block.HashTreeRoot()
 			require.NoError(t, err)
 			wsb, err := wrapper.WrappedSignedBeaconBlock(tt.args.block)
@@ -181,7 +182,7 @@ func TestService_ReceiveBlockUpdateHead(t *testing.T) {
 	require.NoError(t, err)
 	gRoot, err := gBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
-	s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+	s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{'a'})
 	root, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
 	wg := sync.WaitGroup{}
@@ -262,12 +263,12 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 
 			gRoot, err := gBlk.Block().HashTreeRoot()
 			require.NoError(t, err)
-			s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Root: gRoot[:]})
+			s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Root: gRoot[:]}, [32]byte{'a'})
 			root, err := tt.args.block.Block.HashTreeRoot()
 			require.NoError(t, err)
 			wsb, err := wrapper.WrappedSignedBeaconBlock(tt.args.block)
 			require.NoError(t, err)
-			blks := []block.SignedBeaconBlock{wsb}
+			blks := []interfaces.SignedBeaconBlock{wsb}
 			roots := [][32]byte{root}
 			err = s.ReceiveBlockBatch(ctx, blks, roots)
 			if tt.wantedErr != "" {
@@ -280,21 +281,29 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 	}
 }
 
-func TestService_HasInitSyncBlock(t *testing.T) {
-	opts := testServiceOptsNoDB()
+func TestService_HasBlock(t *testing.T) {
+	opts := testServiceOptsWithDB(t)
 	opts = append(opts, WithStateNotifier(&blockchainTesting.MockStateNotifier{}))
 	s, err := NewService(context.Background(), opts...)
 	require.NoError(t, err)
 	r := [32]byte{'a'}
-	if s.HasInitSyncBlock(r) {
+	if s.HasBlock(context.Background(), r) {
 		t.Error("Should not have block")
 	}
 	wsb, err := wrapper.WrappedSignedBeaconBlock(util.NewBeaconBlock())
 	require.NoError(t, err)
 	s.saveInitSyncBlock(r, wsb)
-	if !s.HasInitSyncBlock(r) {
+	if !s.HasBlock(context.Background(), r) {
 		t.Error("Should have block")
 	}
+	b := util.NewBeaconBlock()
+	b.Block.Slot = 1
+	wsb, err = wrapper.WrappedSignedBeaconBlock(b)
+	require.NoError(t, err)
+	r, err = b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, s.cfg.BeaconDB.SaveBlock(context.Background(), wsb))
+	require.Equal(t, true, s.HasBlock(context.Background(), r))
 }
 
 func TestCheckSaveHotStateDB_Enabling(t *testing.T) {
@@ -304,7 +313,7 @@ func TestCheckSaveHotStateDB_Enabling(t *testing.T) {
 	require.NoError(t, err)
 	st := params.BeaconConfig().SlotsPerEpoch.Mul(uint64(epochsSinceFinalitySaveHotStateDB))
 	s.genesisTime = time.Now().Add(time.Duration(-1*int64(st)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
-	s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{})
+	s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{}, [32]byte{})
 
 	require.NoError(t, s.checkSaveHotStateDB(context.Background()))
 	assert.LogsContain(t, hook, "Entering mode to save hot states in DB")
@@ -315,7 +324,7 @@ func TestCheckSaveHotStateDB_Disabling(t *testing.T) {
 	opts := testServiceOptsWithDB(t)
 	s, err := NewService(context.Background(), opts...)
 	require.NoError(t, err)
-	s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{})
+	s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{}, [32]byte{})
 	require.NoError(t, s.checkSaveHotStateDB(context.Background()))
 	s.genesisTime = time.Now()
 
@@ -328,7 +337,7 @@ func TestCheckSaveHotStateDB_Overflow(t *testing.T) {
 	opts := testServiceOptsWithDB(t)
 	s, err := NewService(context.Background(), opts...)
 	require.NoError(t, err)
-	s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: 10000000})
+	s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{}, [32]byte{})
 	s.genesisTime = time.Now()
 
 	require.NoError(t, s.checkSaveHotStateDB(context.Background()))

beacon-chain/blockchain/service.go

@@ -33,10 +33,10 @@ import (
 	"github.com/prysmaticlabs/prysm/cmd/beacon-chain/flags"
 	"github.com/prysmaticlabs/prysm/config/features"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	prysmTime "github.com/prysmaticlabs/prysm/time"
 	"github.com/prysmaticlabs/prysm/time/slots"
 	"github.com/sirupsen/logrus"
@@ -50,21 +50,22 @@ const headSyncMinEpochsAfterCheckpoint = 128
 // Service represents a service that handles the internal
 // logic of managing the full PoS beacon chain.
 type Service struct {
-	cfg                   *config
-	ctx                   context.Context
-	cancel                context.CancelFunc
-	genesisTime           time.Time
-	head                  *head
-	headLock              sync.RWMutex
-	originBlockRoot       [32]byte // genesis root, or weak subjectivity checkpoint root, depending on how the node is initialized
-	nextEpochBoundarySlot types.Slot
-	boundaryRoots         [][32]byte
-	checkpointStateCache  *cache.CheckpointStateCache
-	initSyncBlocks        map[[32]byte]block.SignedBeaconBlock
-	initSyncBlocksLock    sync.RWMutex
-	justifiedBalances     *stateBalanceCache
-	wsVerifier            *WeakSubjectivityVerifier
-	store                 *store.Store
+	cfg                     *config
+	ctx                     context.Context
+	cancel                  context.CancelFunc
+	genesisTime             time.Time
+	head                    *head
+	headLock                sync.RWMutex
+	originBlockRoot         [32]byte // genesis root, or weak subjectivity checkpoint root, depending on how the node is initialized
+	nextEpochBoundarySlot   types.Slot
+	boundaryRoots           [][32]byte
+	checkpointStateCache    *cache.CheckpointStateCache
+	initSyncBlocks          map[[32]byte]interfaces.SignedBeaconBlock
+	initSyncBlocksLock      sync.RWMutex
+	justifiedBalances       *stateBalanceCache
+	wsVerifier              *WeakSubjectivityVerifier
+	store                   *store.Store
+	processAttestationsLock sync.Mutex
 }
 
 // config options for the service.
@@ -99,7 +100,7 @@ func NewService(ctx context.Context, opts ...Option) (*Service, error) {
 		cancel:               cancel,
 		boundaryRoots:        [][32]byte{},
 		checkpointStateCache: cache.NewCheckpointStateCache(),
-		initSyncBlocks:       make(map[[32]byte]block.SignedBeaconBlock),
+		initSyncBlocks:       make(map[[32]byte]interfaces.SignedBeaconBlock),
 		cfg:                  &config{},
 		store:                &store.Store{},
 	}
@@ -143,6 +144,7 @@ func (s *Service) Stop() error {
 	defer s.cancel()
 
 	if s.cfg.StateGen != nil && s.head != nil && s.head.state != nil {
+		// Save the last finalized state so that starting up in the following run will be much faster.
 		if err := s.cfg.StateGen.ForceCheckpoint(s.ctx, s.head.state.FinalizedCheckpoint().Root); err != nil {
 			return err
 		}
@@ -199,13 +201,10 @@ func (s *Service) StartFromSavedState(saved state.BeaconState) error {
 		forkChoicer = protoarray.New(justified.Epoch, finalized.Epoch, fRoot)
 	}
 	s.cfg.ForkChoiceStore = forkChoicer
-	fb, err := s.cfg.BeaconDB.Block(s.ctx, s.ensureRootNotZeros(fRoot))
+	fb, err := s.getBlock(s.ctx, s.ensureRootNotZeros(fRoot))
 	if err != nil {
 		return errors.Wrap(err, "could not get finalized checkpoint block")
 	}
-	if fb == nil {
-		return errNilFinalizedInStore
-	}
 	payloadHash, err := getBlockPayloadHash(fb.Block())
 	if err != nil {
 		return errors.Wrap(err, "could not get execution payload hash")
@@ -337,14 +336,13 @@ func (s *Service) initializeHeadFromDB(ctx context.Context) error {
 				finalizedState.Slot(), flags.HeadSync.Name)
 		}
 	}
-
-	finalizedBlock, err := s.cfg.BeaconDB.Block(ctx, finalizedRoot)
-	if err != nil {
-		return errors.Wrap(err, "could not get finalized block from db")
+	if finalizedState == nil || finalizedState.IsNil() {
+		return errors.New("finalized state can't be nil")
 	}
 
-	if finalizedState == nil || finalizedState.IsNil() || finalizedBlock == nil || finalizedBlock.IsNil() {
-		return errors.New("finalized state and block can't be nil")
+	finalizedBlock, err := s.getBlock(ctx, finalizedRoot)
+	if err != nil {
+		return errors.Wrap(err, "could not get finalized block")
 	}
 	s.setHead(finalizedRoot, finalizedBlock, finalizedState)
 

beacon-chain/blockchain/service_norace_test.go

@@ -6,7 +6,7 @@ import (
 	"testing"
 
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
 	"github.com/sirupsen/logrus"

beacon-chain/blockchain/service_test.go

@@ -29,10 +29,11 @@ import (
 	v1 "github.com/prysmaticlabs/prysm/beacon-chain/state/v1"
 	"github.com/prysmaticlabs/prysm/cmd/beacon-chain/flags"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
+	"github.com/prysmaticlabs/prysm/container/trie"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
@@ -86,9 +87,11 @@ func setupBeaconChain(t *testing.T, beaconDB db.Database) *Service {
 	bState, _ := util.DeterministicGenesisState(t, 10)
 	pbState, err := v1.ProtobufBeaconState(bState.InnerStateUnsafe())
 	require.NoError(t, err)
+	mockTrie, err := trie.NewTrie(0)
+	require.NoError(t, err)
 	err = beaconDB.SavePowchainData(ctx, &ethpb.ETH1ChainData{
 		BeaconState: pbState,
-		Trie:        &ethpb.SparseMerkleTrie{},
+		Trie:        mockTrie.ToProto(),
 		CurrentEth1Data: &ethpb.LatestETH1Data{
 			BlockHash: make([]byte, 32),
 		},
@@ -221,7 +224,8 @@ func TestChainService_InitializeBeaconChain(t *testing.T) {
 	require.NoError(t, err)
 	trie, _, err := util.DepositTrieFromDeposits(deposits)
 	require.NoError(t, err)
-	hashTreeRoot := trie.HashTreeRoot()
+	hashTreeRoot, err := trie.HashTreeRoot()
+	require.NoError(t, err)
 	genState, err := transition.EmptyGenesisState()
 	require.NoError(t, err)
 	err = genState.SetEth1Data(&ethpb.Eth1Data{
@@ -273,8 +277,12 @@ func TestChainService_CorrectGenesisRoots(t *testing.T) {
 	// Test the start function.
 	chainService.Start()
 
-	require.DeepEqual(t, blkRoot[:], chainService.store.FinalizedCheckpt().Root, "Finalize Checkpoint root is incorrect")
-	require.DeepEqual(t, params.BeaconConfig().ZeroHash[:], chainService.store.JustifiedCheckpt().Root, "Justified Checkpoint root is incorrect")
+	cp, err := chainService.store.FinalizedCheckpt()
+	require.NoError(t, err)
+	require.DeepEqual(t, blkRoot[:], cp.Root, "Finalize Checkpoint root is incorrect")
+	cp, err = chainService.store.JustifiedCheckpt()
+	require.NoError(t, err)
+	require.DeepEqual(t, params.BeaconConfig().ZeroHash[:], cp.Root, "Justified Checkpoint root is incorrect")
 
 	require.NoError(t, chainService.Stop(), "Unable to stop chain service")
 
@@ -500,7 +508,7 @@ func TestHasBlock_ForkChoiceAndDB_ProtoArray(t *testing.T) {
 		cfg:   &config{ForkChoiceStore: protoarray.New(0, 0, [32]byte{}), BeaconDB: beaconDB},
 		store: &store.Store{},
 	}
-	s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: 0, Root: params.BeaconConfig().ZeroHash[:]})
+	s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: 0, Root: params.BeaconConfig().ZeroHash[:]}, [32]byte{})
 	b := util.NewBeaconBlock()
 	r, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
@@ -521,7 +529,7 @@ func TestHasBlock_ForkChoiceAndDB_DoublyLinkedTree(t *testing.T) {
 		cfg:   &config{ForkChoiceStore: doublylinkedtree.New(0, 0), BeaconDB: beaconDB},
 		store: &store.Store{},
 	}
-	s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: 0, Root: params.BeaconConfig().ZeroHash[:]})
+	s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: 0, Root: params.BeaconConfig().ZeroHash[:]}, [32]byte{})
 	b := util.NewBeaconBlock()
 	r, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
@@ -542,7 +550,7 @@ func TestServiceStop_SaveCachedBlocks(t *testing.T) {
 		cfg:            &config{BeaconDB: beaconDB, StateGen: stategen.New(beaconDB)},
 		ctx:            ctx,
 		cancel:         cancel,
-		initSyncBlocks: make(map[[32]byte]block.SignedBeaconBlock),
+		initSyncBlocks: make(map[[32]byte]interfaces.SignedBeaconBlock),
 	}
 	b := util.NewBeaconBlock()
 	r, err := b.Block.HashTreeRoot()
@@ -594,7 +602,7 @@ func BenchmarkHasBlockForkChoiceStore_ProtoArray(b *testing.B) {
 		cfg:   &config{ForkChoiceStore: protoarray.New(0, 0, [32]byte{}), BeaconDB: beaconDB},
 		store: &store.Store{},
 	}
-	s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: 0, Root: params.BeaconConfig().ZeroHash[:]})
+	s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: 0, Root: params.BeaconConfig().ZeroHash[:]}, [32]byte{})
 	blk := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{}}}
 	r, err := blk.Block.HashTreeRoot()
 	require.NoError(b, err)
@@ -617,7 +625,7 @@ func BenchmarkHasBlockForkChoiceStore_DoublyLinkedTree(b *testing.B) {
 		cfg:   &config{ForkChoiceStore: doublylinkedtree.New(0, 0), BeaconDB: beaconDB},
 		store: &store.Store{},
 	}
-	s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: 0, Root: params.BeaconConfig().ZeroHash[:]})
+	s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: 0, Root: params.BeaconConfig().ZeroHash[:]}, [32]byte{})
 	blk := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{}}}
 	r, err := blk.Block.HashTreeRoot()
 	require.NoError(b, err)

beacon-chain/blockchain/state_balance_cache.go

@@ -37,7 +37,7 @@ func newStateBalanceCache(sg *stategen.State) (*stateBalanceCache, error) {
 // the previously read value. This cache assumes we only want to cache one
 // set of balances for a single root (the current justified root).
 //
-// warning: this is not thread-safe on its own, relies on get() for locking
+// WARNING: this is not thread-safe on its own, relies on get() for locking
 func (c *stateBalanceCache) update(ctx context.Context, justifiedRoot [32]byte) ([]uint64, error) {
 	stateBalanceCacheMiss.Inc()
 	justifiedState, err := c.stateGen.StateByRoot(ctx, justifiedRoot)

beacon-chain/blockchain/store/BUILD.bazel

@@ -10,7 +10,10 @@ go_library(
     ],
     importpath = "github.com/prysmaticlabs/prysm/beacon-chain/blockchain/store",
     visibility = ["//beacon-chain:__subpackages__"],
-    deps = ["//proto/prysm/v1alpha1:go_default_library"],
+    deps = [
+        "//proto/prysm/v1alpha1:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
+    ],
 )
 
 go_test(

beacon-chain/blockchain/store/new_test.go

@@ -17,9 +17,19 @@ func TestNew(t *testing.T) {
 		Root:  []byte("hello"),
 	}
 	s := New(j, f)
-	require.DeepSSZEqual(t, s.JustifiedCheckpt(), j)
-	require.DeepSSZEqual(t, s.BestJustifiedCheckpt(), j)
-	require.DeepSSZEqual(t, s.PrevJustifiedCheckpt(), j)
-	require.DeepSSZEqual(t, s.FinalizedCheckpt(), f)
-	require.DeepSSZEqual(t, s.PrevFinalizedCheckpt(), f)
+	cp, err := s.JustifiedCheckpt()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, j, cp)
+	cp, err = s.BestJustifiedCheckpt()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, j, cp)
+	cp, err = s.PrevJustifiedCheckpt()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, j, cp)
+	cp, err = s.FinalizedCheckpt()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, f, cp)
+	cp, err = s.PrevFinalizedCheckpt()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, f, cp)
 }

beacon-chain/blockchain/store/setter_getter.go

@@ -1,40 +1,76 @@
 package store
 
-import ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+import (
+	"github.com/pkg/errors"
+	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+)
+
+var (
+	ErrNilCheckpoint = errors.New("nil checkpoint")
+)
 
 // PrevJustifiedCheckpt returns the previous justified checkpoint in the Store.
-func (s *Store) PrevJustifiedCheckpt() *ethpb.Checkpoint {
+func (s *Store) PrevJustifiedCheckpt() (*ethpb.Checkpoint, error) {
 	s.RLock()
 	defer s.RUnlock()
-	return s.prevJustifiedCheckpt
+	if s.prevJustifiedCheckpt == nil {
+		return nil, ErrNilCheckpoint
+	}
+	return s.prevJustifiedCheckpt, nil
 }
 
 // BestJustifiedCheckpt returns the best justified checkpoint in the Store.
-func (s *Store) BestJustifiedCheckpt() *ethpb.Checkpoint {
+func (s *Store) BestJustifiedCheckpt() (*ethpb.Checkpoint, error) {
 	s.RLock()
 	defer s.RUnlock()
-	return s.bestJustifiedCheckpt
+	if s.bestJustifiedCheckpt == nil {
+		return nil, ErrNilCheckpoint
+	}
+	return s.bestJustifiedCheckpt, nil
 }
 
 // JustifiedCheckpt returns the justified checkpoint in the Store.
-func (s *Store) JustifiedCheckpt() *ethpb.Checkpoint {
+func (s *Store) JustifiedCheckpt() (*ethpb.Checkpoint, error) {
 	s.RLock()
 	defer s.RUnlock()
-	return s.justifiedCheckpt
+	if s.justifiedCheckpt == nil {
+		return nil, ErrNilCheckpoint
+	}
+	return s.justifiedCheckpt, nil
+}
+
+// JustifiedPayloadBlockHash returns the justified payload block hash reflecting justified check point.
+func (s *Store) JustifiedPayloadBlockHash() [32]byte {
+	s.RLock()
+	defer s.RUnlock()
+	return s.justifiedPayloadBlockHash
 }
 
 // PrevFinalizedCheckpt returns the previous finalized checkpoint in the Store.
-func (s *Store) PrevFinalizedCheckpt() *ethpb.Checkpoint {
+func (s *Store) PrevFinalizedCheckpt() (*ethpb.Checkpoint, error) {
 	s.RLock()
 	defer s.RUnlock()
-	return s.prevFinalizedCheckpt
+	if s.prevFinalizedCheckpt == nil {
+		return nil, ErrNilCheckpoint
+	}
+	return s.prevFinalizedCheckpt, nil
 }
 
 // FinalizedCheckpt returns the finalized checkpoint in the Store.
-func (s *Store) FinalizedCheckpt() *ethpb.Checkpoint {
+func (s *Store) FinalizedCheckpt() (*ethpb.Checkpoint, error) {
 	s.RLock()
 	defer s.RUnlock()
-	return s.finalizedCheckpt
+	if s.finalizedCheckpt == nil {
+		return nil, ErrNilCheckpoint
+	}
+	return s.finalizedCheckpt, nil
+}
+
+// FinalizedPayloadBlockHash returns the finalized payload block hash reflecting finalized check point.
+func (s *Store) FinalizedPayloadBlockHash() [32]byte {
+	s.RLock()
+	defer s.RUnlock()
+	return s.finalizedPayloadBlockHash
 }
 
 // SetPrevJustifiedCheckpt sets the previous justified checkpoint in the Store.
@@ -51,18 +87,20 @@ func (s *Store) SetBestJustifiedCheckpt(cp *ethpb.Checkpoint) {
 	s.bestJustifiedCheckpt = cp
 }
 
-// SetJustifiedCheckpt sets the justified checkpoint in the Store.
-func (s *Store) SetJustifiedCheckpt(cp *ethpb.Checkpoint) {
+// SetJustifiedCheckptAndPayloadHash sets the justified checkpoint and blockhash in the Store.
+func (s *Store) SetJustifiedCheckptAndPayloadHash(cp *ethpb.Checkpoint, h [32]byte) {
 	s.Lock()
 	defer s.Unlock()
 	s.justifiedCheckpt = cp
+	s.justifiedPayloadBlockHash = h
 }
 
-// SetFinalizedCheckpt sets the finalized checkpoint in the Store.
-func (s *Store) SetFinalizedCheckpt(cp *ethpb.Checkpoint) {
+// SetFinalizedCheckptAndPayloadHash sets the finalized checkpoint and blockhash in the Store.
+func (s *Store) SetFinalizedCheckptAndPayloadHash(cp *ethpb.Checkpoint, h [32]byte) {
 	s.Lock()
 	defer s.Unlock()
 	s.finalizedCheckpt = cp
+	s.finalizedPayloadBlockHash = h
 }
 
 // SetPrevFinalizedCheckpt sets the previous finalized checkpoint in the Store.

beacon-chain/blockchain/store/setter_getter_test.go

@@ -10,44 +10,63 @@ import (
 func Test_store_PrevJustifiedCheckpt(t *testing.T) {
 	s := &Store{}
 	var cp *ethpb.Checkpoint
-	require.Equal(t, cp, s.PrevJustifiedCheckpt())
+	_, err := s.PrevJustifiedCheckpt()
+	require.ErrorIs(t, ErrNilCheckpoint, err)
 	cp = &ethpb.Checkpoint{Epoch: 1, Root: []byte{'a'}}
 	s.SetPrevJustifiedCheckpt(cp)
-	require.Equal(t, cp, s.PrevJustifiedCheckpt())
+	got, err := s.PrevJustifiedCheckpt()
+	require.NoError(t, err)
+	require.Equal(t, cp, got)
 }
 
 func Test_store_BestJustifiedCheckpt(t *testing.T) {
 	s := &Store{}
 	var cp *ethpb.Checkpoint
-	require.Equal(t, cp, s.BestJustifiedCheckpt())
+	_, err := s.BestJustifiedCheckpt()
+	require.ErrorIs(t, ErrNilCheckpoint, err)
 	cp = &ethpb.Checkpoint{Epoch: 1, Root: []byte{'a'}}
 	s.SetBestJustifiedCheckpt(cp)
-	require.Equal(t, cp, s.BestJustifiedCheckpt())
+	got, err := s.BestJustifiedCheckpt()
+	require.NoError(t, err)
+	require.Equal(t, cp, got)
 }
 
 func Test_store_JustifiedCheckpt(t *testing.T) {
 	s := &Store{}
 	var cp *ethpb.Checkpoint
-	require.Equal(t, cp, s.JustifiedCheckpt())
+	_, err := s.JustifiedCheckpt()
+	require.ErrorIs(t, ErrNilCheckpoint, err)
 	cp = &ethpb.Checkpoint{Epoch: 1, Root: []byte{'a'}}
-	s.SetJustifiedCheckpt(cp)
-	require.Equal(t, cp, s.JustifiedCheckpt())
+	h := [32]byte{'b'}
+	s.SetJustifiedCheckptAndPayloadHash(cp, h)
+	got, err := s.JustifiedCheckpt()
+	require.NoError(t, err)
+	require.Equal(t, cp, got)
+	require.Equal(t, h, s.JustifiedPayloadBlockHash())
 }
 
 func Test_store_FinalizedCheckpt(t *testing.T) {
 	s := &Store{}
 	var cp *ethpb.Checkpoint
-	require.Equal(t, cp, s.FinalizedCheckpt())
+	_, err := s.FinalizedCheckpt()
+	require.ErrorIs(t, ErrNilCheckpoint, err)
 	cp = &ethpb.Checkpoint{Epoch: 1, Root: []byte{'a'}}
-	s.SetFinalizedCheckpt(cp)
-	require.Equal(t, cp, s.FinalizedCheckpt())
+	h := [32]byte{'b'}
+	s.SetFinalizedCheckptAndPayloadHash(cp, h)
+	got, err := s.FinalizedCheckpt()
+	require.NoError(t, err)
+	require.Equal(t, cp, got)
+	require.Equal(t, h, s.FinalizedPayloadBlockHash())
 }
 
 func Test_store_PrevFinalizedCheckpt(t *testing.T) {
 	s := &Store{}
 	var cp *ethpb.Checkpoint
-	require.Equal(t, cp, s.PrevFinalizedCheckpt())
+	_, err := s.PrevFinalizedCheckpt()
+	require.ErrorIs(t, ErrNilCheckpoint, err)
 	cp = &ethpb.Checkpoint{Epoch: 1, Root: []byte{'a'}}
 	s.SetPrevFinalizedCheckpt(cp)
-	require.Equal(t, cp, s.PrevFinalizedCheckpt())
+	got, err := s.PrevFinalizedCheckpt()
+	require.NoError(t, err)
+	require.Equal(t, cp, got)
 }

beacon-chain/blockchain/store/type.go

@@ -17,9 +17,11 @@ import (
 //    best_justified_checkpoint: Checkpoint
 //    proposerBoostRoot: Root
 type Store struct {
-	justifiedCheckpt     *ethpb.Checkpoint
-	finalizedCheckpt     *ethpb.Checkpoint
-	bestJustifiedCheckpt *ethpb.Checkpoint
+	justifiedCheckpt          *ethpb.Checkpoint
+	justifiedPayloadBlockHash [32]byte
+	finalizedCheckpt          *ethpb.Checkpoint
+	finalizedPayloadBlockHash [32]byte
+	bestJustifiedCheckpt      *ethpb.Checkpoint
 	sync.RWMutex
 	// These are not part of the consensus spec, but we do use them to return gRPC API requests.
 	// TODO(10094): Consider removing in v3.

beacon-chain/blockchain/testing/BUILD.bazel

@@ -22,10 +22,10 @@ go_library(
         "//beacon-chain/state:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
-        "//proto/prysm/v1alpha1/block:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
     ],

beacon-chain/blockchain/testing/mock.go

@@ -21,10 +21,10 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/sirupsen/logrus"
 )
 
@@ -47,10 +47,10 @@ type ChainService struct {
 	InitSyncBlockRoots          map[[32]byte]bool
 	DB                          db.Database
 	State                       state.BeaconState
-	Block                       block.SignedBeaconBlock
+	Block                       interfaces.SignedBeaconBlock
 	VerifyBlkDescendantErr      error
 	stateNotifier               statefeed.Notifier
-	BlocksReceived              []block.SignedBeaconBlock
+	BlocksReceived              []interfaces.SignedBeaconBlock
 	SyncCommitteeIndices        []types.CommitteeIndex
 	blockNotifier               blockfeed.Notifier
 	opNotifier                  opfeed.Notifier
@@ -165,7 +165,7 @@ func (mon *MockOperationNotifier) OperationFeed() *event.Feed {
 }
 
 // ReceiveBlockInitialSync mocks ReceiveBlockInitialSync method in chain service.
-func (s *ChainService) ReceiveBlockInitialSync(ctx context.Context, block block.SignedBeaconBlock, _ [32]byte) error {
+func (s *ChainService) ReceiveBlockInitialSync(ctx context.Context, block interfaces.SignedBeaconBlock, _ [32]byte) error {
 	if s.State == nil {
 		return ErrNilState
 	}
@@ -192,7 +192,7 @@ func (s *ChainService) ReceiveBlockInitialSync(ctx context.Context, block block.
 }
 
 // ReceiveBlockBatch processes blocks in batches from initial-sync.
-func (s *ChainService) ReceiveBlockBatch(ctx context.Context, blks []block.SignedBeaconBlock, _ [][32]byte) error {
+func (s *ChainService) ReceiveBlockBatch(ctx context.Context, blks []interfaces.SignedBeaconBlock, _ [][32]byte) error {
 	if s.State == nil {
 		return ErrNilState
 	}
@@ -221,7 +221,7 @@ func (s *ChainService) ReceiveBlockBatch(ctx context.Context, blks []block.Signe
 }
 
 // ReceiveBlock mocks ReceiveBlock method in chain service.
-func (s *ChainService) ReceiveBlock(ctx context.Context, block block.SignedBeaconBlock, _ [32]byte) error {
+func (s *ChainService) ReceiveBlock(ctx context.Context, block interfaces.SignedBeaconBlock, _ [32]byte) error {
 	if s.ReceiveBlockMockErr != nil {
 		return s.ReceiveBlockMockErr
 	}
@@ -267,7 +267,7 @@ func (s *ChainService) HeadRoot(_ context.Context) ([]byte, error) {
 }
 
 // HeadBlock mocks HeadBlock method in chain service.
-func (s *ChainService) HeadBlock(context.Context) (block.SignedBeaconBlock, error) {
+func (s *ChainService) HeadBlock(context.Context) (interfaces.SignedBeaconBlock, error) {
 	return s.Block, nil
 }
 
@@ -282,18 +282,18 @@ func (s *ChainService) CurrentFork() *ethpb.Fork {
 }
 
 // FinalizedCheckpt mocks FinalizedCheckpt method in chain service.
-func (s *ChainService) FinalizedCheckpt() *ethpb.Checkpoint {
-	return s.FinalizedCheckPoint
+func (s *ChainService) FinalizedCheckpt() (*ethpb.Checkpoint, error) {
+	return s.FinalizedCheckPoint, nil
 }
 
 // CurrentJustifiedCheckpt mocks CurrentJustifiedCheckpt method in chain service.
-func (s *ChainService) CurrentJustifiedCheckpt() *ethpb.Checkpoint {
-	return s.CurrentJustifiedCheckPoint
+func (s *ChainService) CurrentJustifiedCheckpt() (*ethpb.Checkpoint, error) {
+	return s.CurrentJustifiedCheckPoint, nil
 }
 
 // PreviousJustifiedCheckpt mocks PreviousJustifiedCheckpt method in chain service.
-func (s *ChainService) PreviousJustifiedCheckpt() *ethpb.Checkpoint {
-	return s.PreviousJustifiedCheckPoint
+func (s *ChainService) PreviousJustifiedCheckpt() (*ethpb.Checkpoint, error) {
+	return s.PreviousJustifiedCheckPoint, nil
 }
 
 // ReceiveAttestation mocks ReceiveAttestation method in chain service.
@@ -357,8 +357,14 @@ func (s *ChainService) IsCanonical(_ context.Context, r [32]byte) (bool, error)
 	return true, nil
 }
 
-// HasInitSyncBlock mocks the same method in the chain service.
-func (s *ChainService) HasInitSyncBlock(rt [32]byte) bool {
+// HasBlock mocks the same method in the chain service.
+func (s *ChainService) HasBlock(ctx context.Context, rt [32]byte) bool {
+	if s.DB == nil {
+		return false
+	}
+	if s.DB.HasBlock(ctx, rt) {
+		return true
+	}
 	if s.InitSyncBlockRoots == nil {
 		return false
 	}
@@ -370,7 +376,7 @@ func (_ *ChainService) HeadGenesisValidatorsRoot() [32]byte {
 	return [32]byte{}
 }
 
-// VerifyBlkDescendant mocks VerifyBlkDescendant and always returns nil.
+// VerifyFinalizedBlkDescendant mocks VerifyBlkDescendant and always returns nil.
 func (s *ChainService) VerifyFinalizedBlkDescendant(_ context.Context, _ [32]byte) error {
 	return s.VerifyBlkDescendantErr
 }
@@ -444,3 +450,9 @@ func (s *ChainService) IsOptimistic(_ context.Context) (bool, error) {
 func (s *ChainService) IsOptimisticForRoot(_ context.Context, _ [32]byte) (bool, error) {
 	return s.Optimistic, nil
 }
+
+// UpdateHead mocks the same method in the chain service.
+func (s *ChainService) UpdateHead(_ context.Context) error { return nil }
+
+// ReceiveAttesterSlashing mocks the same method in the chain service.
+func (s *ChainService) ReceiveAttesterSlashing(context.Context, *ethpb.AttesterSlashing) {}

beacon-chain/blockchain/weak_subjectivity_checks.go

@@ -30,10 +30,11 @@ type WeakSubjectivityVerifier struct {
 	db       weakSubjectivityDB
 }
 
-// NewWeakSubjectivityVerifier validates a checkpoint, and if valid, uses it to initialize a weak subjectivity verifier
+// NewWeakSubjectivityVerifier validates a checkpoint, and if valid, uses it to initialize a weak subjectivity verifier.
 func NewWeakSubjectivityVerifier(wsc *ethpb.Checkpoint, db weakSubjectivityDB) (*WeakSubjectivityVerifier, error) {
 	if wsc == nil || len(wsc.Root) == 0 || wsc.Epoch == 0 {
-		log.Warn("No valid weak subjectivity checkpoint specified, running without weak subjectivity verification")
+		log.Info("No checkpoint for syncing provided, node will begin syncing from genesis. Checkpoint Sync is an optional feature that allows your node to sync from a more recent checkpoint, " +
+			"which enhances the security of your local beacon node and the broader network. See https://docs.prylabs.network/docs/next/prysm-usage/checkpoint-sync/ to learn how to configure Checkpoint Sync.")
 		return &WeakSubjectivityVerifier{
 			enabled: false,
 		}, nil
@@ -58,7 +59,6 @@ func (v *WeakSubjectivityVerifier) VerifyWeakSubjectivity(ctx context.Context, f
 	if v.verified || !v.enabled {
 		return nil
 	}
-
 	// Two conditions are described in the specs:
 	// IF epoch_number > store.finalized_checkpoint.epoch,
 	// then ASSERT during block sync that block with root block_root
@@ -92,6 +92,5 @@ func (v *WeakSubjectivityVerifier) VerifyWeakSubjectivity(ctx context.Context, f
 			return nil
 		}
 	}
-
 	return errors.Wrap(errWSBlockNotFoundInEpoch, fmt.Sprintf("root=%#x, epoch=%d", v.root, v.epoch))
 }

beacon-chain/blockchain/weak_subjectivity_checks_test.go

@@ -9,9 +9,9 @@ import (
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
 	"github.com/prysmaticlabs/prysm/time/slots"
@@ -79,8 +79,10 @@ func TestService_VerifyWeakSubjectivityRoot(t *testing.T) {
 				store:      &store.Store{},
 				wsVerifier: wv,
 			}
-			s.store.SetFinalizedCheckpt(&ethpb.Checkpoint{Epoch: tt.finalizedEpoch})
-			err = s.wsVerifier.VerifyWeakSubjectivity(context.Background(), s.store.FinalizedCheckpt().Epoch)
+			s.store.SetFinalizedCheckptAndPayloadHash(&ethpb.Checkpoint{Epoch: tt.finalizedEpoch}, [32]byte{})
+			cp, err := s.store.FinalizedCheckpt()
+			require.NoError(t, err)
+			err = s.wsVerifier.VerifyWeakSubjectivity(context.Background(), cp.Epoch)
 			if tt.wantErr == nil {
 				require.NoError(t, err)
 			} else {

beacon-chain/builder/BUILD.bazel

@@ -0,0 +1,31 @@
+load("@prysm//tools/go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "options.go",
+        "service.go",
+        "verify.go",
+    ],
+    importpath = "github.com/prysmaticlabs/prysm/beacon-chain/builder",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//api/client/builder:go_default_library",
+        "//beacon-chain/core/signing:go_default_library",
+        "//cmd/beacon-chain/flags:go_default_library",
+        "//config/fieldparams:go_default_library",
+        "//config/params:go_default_library",
+        "//consensus-types/primitives:go_default_library",
+        "//crypto/bls:go_default_library",
+        "//encoding/bytesutil:go_default_library",
+        "//network:go_default_library",
+        "//network/authorization:go_default_library",
+        "//proto/engine/v1:go_default_library",
+        "//proto/prysm/v1alpha1:go_default_library",
+        "//time/slots:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
+        "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
+        "@com_github_urfave_cli_v2//:go_default_library",
+    ],
+)

beacon-chain/builder/options.go

@@ -0,0 +1,58 @@
+package builder
+
+import (
+	"github.com/prysmaticlabs/prysm/cmd/beacon-chain/flags"
+	"github.com/prysmaticlabs/prysm/network"
+	"github.com/prysmaticlabs/prysm/network/authorization"
+	"github.com/urfave/cli/v2"
+)
+
+type Option func(s *Service) error
+
+// FlagOptions for builder service flag configurations.
+func FlagOptions(c *cli.Context) ([]Option, error) {
+	endpoints := parseBuilderEndpoints(c)
+	opts := []Option{
+		WithBuilderEndpoints(endpoints),
+	}
+	return opts, nil
+}
+
+func WithBuilderEndpoints(endpoints []string) Option {
+	return func(s *Service) error {
+		stringEndpoints := dedupEndpoints(endpoints)
+		endpoints := make([]network.Endpoint, len(stringEndpoints))
+		for i, e := range stringEndpoints {
+			endpoints[i] = covertEndPoint(e)
+		}
+		s.cfg.builderEndpoint = endpoints[0] // Use the first one as the default.
+		return nil
+	}
+}
+
+func covertEndPoint(ep string) network.Endpoint {
+	return network.Endpoint{
+		Url: ep,
+		Auth: network.AuthorizationData{ // Not sure about authorization for now.
+			Method: authorization.None,
+			Value:  "",
+		}}
+}
+
+func parseBuilderEndpoints(c *cli.Context) []string {
+	// Goal is to support multiple end points later.
+	return []string{c.String(flags.MevBuilderFlag.Name)}
+}
+
+func dedupEndpoints(endpoints []string) []string {
+	selectionMap := make(map[string]bool)
+	newEndpoints := make([]string, 0, len(endpoints))
+	for _, point := range endpoints {
+		if selectionMap[point] {
+			continue
+		}
+		newEndpoints = append(newEndpoints, point)
+		selectionMap[point] = true
+	}
+	return newEndpoints
+}

beacon-chain/builder/service.go

@@ -0,0 +1,187 @@
+package builder
+
+import (
+	"context"
+
+	"github.com/prysmaticlabs/prysm/api/client/builder"
+	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
+	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/network"
+	v1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+)
+
+type BlockBuilder interface {
+	SubmitBlindedBlock(ctx context.Context, block *ethpb.SignedBlindedBeaconBlockBellatrix) (*v1.ExecutionPayload, error)
+	GetHeader(ctx context.Context, slot types.Slot, parentHash [32]byte, pubKey [48]byte) (*ethpb.SignedBuilderBid, error)
+	Status() error
+	RegisterValidator(ctx context.Context, reg *ethpb.SignedValidatorRegistrationV1) error
+}
+
+// config defines a config struct for dependencies into the service.
+type config struct {
+	builderEndpoint network.Endpoint
+}
+
+type Service struct {
+	cfg *config
+	c   *builder.Client
+}
+
+func NewService(ctx context.Context, opts ...Option) (*Service, error) {
+	s := &Service{
+		cfg: &config{},
+	}
+	for _, opt := range opts {
+		if err := opt(s); err != nil {
+			return nil, err
+
+		}
+	}
+	//c, err := builder.NewClient("http://localhost:28545")
+	//if err != nil {
+	//	return nil, err
+	//}
+	//sk, err := bls.RandKey()
+	//if err != nil {
+	//	return nil, err
+	//}
+
+	//reg := &ethpb.ValidatorRegistrationV1{
+	//	FeeRecipient: params.BeaconConfig().DefaultFeeRecipient.Bytes(),
+	//	GasLimit:     100000000,
+	//	Timestamp:    uint64(time.Now().Unix()),
+	//	Pubkey:       sk.PublicKey().Marshal(),
+	//}
+	//sig := sk.Sign(reg.Pubkey)
+
+	//if err := c.RegisterValidator(ctx, &ethpb.SignedValidatorRegistrationV1{
+	//	Message:   reg,
+	//	Signature: sig.Marshal(),
+	//}); err != nil {
+	//	return nil, err
+	//}
+
+	//h := "a0513a503d5bd6e89a144c3268e5b7e9da9dbf63df125a360e3950a7d0d67131"
+	//data, err := hex.DecodeString(h)
+	//if err != nil {
+	//	panic(err)
+	//}
+	//b, err := c.GetHeader(ctx, 1, bytesutil.ToBytes32(data), [48]byte{})
+	//if err != nil {
+	//	return nil, err
+	//}
+	//msg := b.Message
+	//header := msg.Header
+	//
+	//genesis, keys := util.DeterministicGenesisState(t, 64)
+	//b, err := util.GenerateFullBlock(genesis, keys, util.DefaultBlockGenConfig(), 1)
+	//if err != nil {
+	//	return nil, err
+	//}
+	//sb := HydrateSignedBlindedBeaconBlockBellatrix(&ethpb.SignedBlindedBeaconBlockBellatrix{
+	//	Block: &ethpb.BlindedBeaconBlockBellatrix{
+	//		Body: &ethpb.BlindedBeaconBlockBodyBellatrix{
+	//			Attestations: []*ethpb.Attestation{
+	//				{Signature: []byte{1, 2, 3, 4}},
+	//			},
+	//		},
+	//	},
+	//})
+	//
+	//sb.Block.Body.ExecutionPayloadHeader = header
+	//sb.Block.Body.SyncAggregate.SyncCommitteeBits = bitfield.NewBitvector512()
+	//if _, err := c.SubmitBlindedBlock(ctx, sb); err != nil {
+	//	return nil, err
+	//}
+	//
+	//log.Fatal("End of test")
+
+	return s, nil
+}
+
+func (s *Service) Start() {}
+
+func (s *Service) Stop() error {
+	return nil
+}
+
+func (s *Service) SubmitBlindedBlock(context.Context, *ethpb.SignedBlindedBeaconBlockBellatrix) (*v1.ExecutionPayload, error) {
+	panic("implement me")
+}
+
+func (s *Service) GetHeader(context.Context, types.Slot, [32]byte, [48]byte) (*ethpb.SignedBuilderBid, error) {
+	panic("implement me")
+}
+
+func (s *Service) Status() error {
+	panic("implement me")
+}
+
+func (s *Service) RegisterValidator(context.Context, *ethpb.SignedValidatorRegistrationV1) error {
+	panic("implement me")
+}
+
+func HydrateSignedBlindedBeaconBlockBellatrix(b *ethpb.SignedBlindedBeaconBlockBellatrix) *ethpb.SignedBlindedBeaconBlockBellatrix {
+	if b.Signature == nil {
+		b.Signature = make([]byte, fieldparams.BLSSignatureLength)
+	}
+	b.Block = HydrateBlindedBeaconBlockBellatrix(b.Block)
+	return b
+}
+
+// HydrateBlindedBeaconBlockBellatrix hydrates a blinded beacon block with correct field length sizes
+// to comply with fssz marshalling and unmarshalling rules.
+func HydrateBlindedBeaconBlockBellatrix(b *ethpb.BlindedBeaconBlockBellatrix) *ethpb.BlindedBeaconBlockBellatrix {
+	if b == nil {
+		b = &ethpb.BlindedBeaconBlockBellatrix{}
+	}
+	if b.ParentRoot == nil {
+		b.ParentRoot = make([]byte, fieldparams.RootLength)
+	}
+	if b.StateRoot == nil {
+		b.StateRoot = make([]byte, fieldparams.RootLength)
+	}
+	b.Body = HydrateBlindedBeaconBlockBodyBellatrix(b.Body)
+	return b
+}
+
+// HydrateBlindedBeaconBlockBodyBellatrix hydrates a blinded beacon block body with correct field length sizes
+// to comply with fssz marshalling and unmarshalling rules.
+func HydrateBlindedBeaconBlockBodyBellatrix(b *ethpb.BlindedBeaconBlockBodyBellatrix) *ethpb.BlindedBeaconBlockBodyBellatrix {
+	if b == nil {
+		b = &ethpb.BlindedBeaconBlockBodyBellatrix{}
+	}
+	if b.RandaoReveal == nil {
+		b.RandaoReveal = make([]byte, fieldparams.BLSSignatureLength)
+	}
+	if b.Graffiti == nil {
+		b.Graffiti = make([]byte, 32)
+	}
+	if b.Eth1Data == nil {
+		b.Eth1Data = &ethpb.Eth1Data{
+			DepositRoot: make([]byte, fieldparams.RootLength),
+			BlockHash:   make([]byte, 32),
+		}
+	}
+	if b.SyncAggregate == nil {
+		b.SyncAggregate = &ethpb.SyncAggregate{
+			SyncCommitteeBits:      make([]byte, 64),
+			SyncCommitteeSignature: make([]byte, fieldparams.BLSSignatureLength),
+		}
+	}
+	if b.ExecutionPayloadHeader == nil {
+		b.ExecutionPayloadHeader = &ethpb.ExecutionPayloadHeader{
+			ParentHash:       make([]byte, 32),
+			FeeRecipient:     make([]byte, 20),
+			StateRoot:        make([]byte, fieldparams.RootLength),
+			ReceiptsRoot:     make([]byte, fieldparams.RootLength),
+			LogsBloom:        make([]byte, 256),
+			PrevRandao:       make([]byte, 32),
+			BaseFeePerGas:    make([]byte, 32),
+			BlockHash:        make([]byte, 32),
+			TransactionsRoot: make([]byte, fieldparams.RootLength),
+		}
+	}
+	return b
+}

beacon-chain/builder/service_test.go

@@ -0,0 +1,65 @@
+package builder
+
+import (
+	"context"
+	"encoding/hex"
+	"math/big"
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/api/client/builder"
+	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
+	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/testing/require"
+	"github.com/prysmaticlabs/prysm/testing/util"
+)
+
+func TestMergeMockRoundtrip(t *testing.T) {
+	c, err := builder.NewClient("http://localhost:28545")
+	require.NoError(t, err)
+
+	h := "a0513a503d5bd6e89a144c3268e5b7e9da9dbf63df125a360e3950a7d0d67131"
+	data, err := hex.DecodeString(h)
+	require.NoError(t, err)
+	ctx := context.Background()
+	header, err := c.GetHeader(ctx, 1, bytesutil.ToBytes32(data), [48]byte{})
+	require.NoError(t, err)
+	t.Log(header.Message.Value)
+
+	st, keys := util.DeterministicGenesisState(t, 1024)
+	b, err := util.GenerateFullBlock(st, keys, util.DefaultBlockGenConfig(), 2)
+	require.NoError(t, err)
+
+	bb := big.NewInt(1770307273)
+	header.Message.Header.BaseFeePerGas = bb.Bytes()
+
+	t.Log(len(b.Block.Body.Attestations))
+	t.Log(len(b.Block.Body.Deposits))
+	t.Log(len(b.Block.Body.VoluntaryExits))
+	t.Log(len(b.Block.Body.ProposerSlashings))
+	t.Log(len(b.Block.Body.AttesterSlashings))
+	t.Log(b.Block.Body.AttesterSlashings[0].Attestation_1.AttestingIndices)
+	t.Log(header.Message.Header.BaseFeePerGas)
+
+	sb := HydrateSignedBlindedBeaconBlockBellatrix(&ethpb.SignedBlindedBeaconBlockBellatrix{
+		Signature: keys[0].Sign([]byte("hello")).Marshal(),
+		Block: &ethpb.BlindedBeaconBlockBellatrix{
+			Slot:          b.Block.Slot,
+			ParentRoot:    b.Block.ParentRoot,
+			StateRoot:     b.Block.StateRoot,
+			ProposerIndex: b.Block.ProposerIndex,
+			Body: &ethpb.BlindedBeaconBlockBodyBellatrix{
+				Attestations:      b.Block.Body.Attestations,
+				RandaoReveal:      b.Block.Body.RandaoReveal,
+				Deposits:          b.Block.Body.Deposits,
+				VoluntaryExits:    b.Block.Body.VoluntaryExits,
+				ProposerSlashings: b.Block.Body.ProposerSlashings,
+				//AttesterSlashings:      b.Block.Body.AttesterSlashings,
+				Graffiti:               b.Block.Body.Graffiti,
+				ExecutionPayloadHeader: header.Message.Header,
+			},
+		},
+	})
+	if _, err := c.SubmitBlindedBlock(ctx, sb); err != nil {
+		t.Fatal(err)
+	}
+}

beacon-chain/builder/verify.go

@@ -0,0 +1,29 @@
+package builder
+
+import (
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/beacon-chain/core/signing"
+	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/time/slots"
+)
+
+func VerifyRegistrationSignature(
+	slot types.Slot,
+	fork *ethpb.Fork,
+	signed *ethpb.SignedValidatorRegistrationV1,
+	genesisRoot []byte,
+) error {
+	if signed == nil || signed.Message == nil {
+		return errors.New("nil signed registration")
+	}
+	domain, err := signing.Domain(fork, slots.ToEpoch(slot), [4]byte{} /*TODO: Use registration signing domain */, genesisRoot)
+	if err != nil {
+		return err
+	}
+
+	if err := signing.VerifySigningRoot(signed, signed.Message.Pubkey, signed.Signature, domain); err != nil {
+		return signing.ErrSigFailedToVerify
+	}
+	return nil
+}

beacon-chain/cache/active_balance_test.go

@@ -1,3 +1,6 @@
+//go:build !fuzz
+// +build !fuzz
+
 package cache
 
 import (

beacon-chain/cache/committee_fuzz_test.go

@@ -1,3 +1,6 @@
+//go:build !fuzz
+// +build !fuzz
+
 package cache
 
 import (

beacon-chain/cache/committee_test.go

@@ -1,3 +1,6 @@
+//go:build !fuzz
+// +build !fuzz
+
 package cache
 
 import (
@@ -107,7 +110,7 @@ func TestCommitteeCache_CanRotate(t *testing.T) {
 	sort.Slice(k, func(i, j int) bool {
 		return k[i].(string) < k[j].(string)
 	})
-	wanted := end - int(maxCommitteesCacheSize)
+	wanted := end - maxCommitteesCacheSize
 	s := bytesutil.ToBytes32([]byte(strconv.Itoa(wanted)))
 	assert.Equal(t, key(s), k[0], "incorrect key received for slot 190")
 

beacon-chain/cache/depositcache/deposits_cache_test.go

@@ -430,7 +430,11 @@ func TestFinalizedDeposits_DepositsCachedCorrectly(t *testing.T) {
 	}
 	trie, err := trie.GenerateTrieFromItems(deps, params.BeaconConfig().DepositContractTreeDepth)
 	require.NoError(t, err, "Could not generate deposit trie")
-	assert.Equal(t, trie.HashTreeRoot(), cachedDeposits.Deposits.HashTreeRoot())
+	rootA, err := trie.HashTreeRoot()
+	require.NoError(t, err)
+	rootB, err := cachedDeposits.Deposits.HashTreeRoot()
+	require.NoError(t, err)
+	assert.Equal(t, rootA, rootB)
 }
 
 func TestFinalizedDeposits_UtilizesPreviouslyCachedDeposits(t *testing.T) {
@@ -488,7 +492,11 @@ func TestFinalizedDeposits_UtilizesPreviouslyCachedDeposits(t *testing.T) {
 	}
 	trie, err := trie.GenerateTrieFromItems(deps, params.BeaconConfig().DepositContractTreeDepth)
 	require.NoError(t, err, "Could not generate deposit trie")
-	assert.Equal(t, trie.HashTreeRoot(), cachedDeposits.Deposits.HashTreeRoot())
+	rootA, err := trie.HashTreeRoot()
+	require.NoError(t, err)
+	rootB, err := cachedDeposits.Deposits.HashTreeRoot()
+	require.NoError(t, err)
+	assert.Equal(t, rootA, rootB)
 }
 
 func TestFinalizedDeposits_HandleZeroDeposits(t *testing.T) {

beacon-chain/cache/proposer_indices.go

@@ -31,7 +31,7 @@ var (
 
 // ProposerIndicesCache is a struct with 1 queue for looking up proposer indices by root.
 type ProposerIndicesCache struct {
-	ProposerIndicesCache *cache.FIFO
+	proposerIndicesCache *cache.FIFO
 	lock                 sync.RWMutex
 }
 
@@ -48,7 +48,7 @@ func proposerIndicesKeyFn(obj interface{}) (string, error) {
 // NewProposerIndicesCache creates a new proposer indices cache for storing/accessing proposer index assignments of an epoch.
 func NewProposerIndicesCache() *ProposerIndicesCache {
 	return &ProposerIndicesCache{
-		ProposerIndicesCache: cache.NewFIFO(proposerIndicesKeyFn),
+		proposerIndicesCache: cache.NewFIFO(proposerIndicesKeyFn),
 	}
 }
 
@@ -58,10 +58,10 @@ func (c *ProposerIndicesCache) AddProposerIndices(p *ProposerIndices) error {
 	c.lock.Lock()
 	defer c.lock.Unlock()
 
-	if err := c.ProposerIndicesCache.AddIfNotPresent(p); err != nil {
+	if err := c.proposerIndicesCache.AddIfNotPresent(p); err != nil {
 		return err
 	}
-	trim(c.ProposerIndicesCache, maxProposerIndicesCacheSize)
+	trim(c.proposerIndicesCache, maxProposerIndicesCacheSize)
 	return nil
 }
 
@@ -69,7 +69,7 @@ func (c *ProposerIndicesCache) AddProposerIndices(p *ProposerIndices) error {
 func (c *ProposerIndicesCache) HasProposerIndices(r [32]byte) (bool, error) {
 	c.lock.RLock()
 	defer c.lock.RUnlock()
-	_, exists, err := c.ProposerIndicesCache.GetByKey(key(r))
+	_, exists, err := c.proposerIndicesCache.GetByKey(key(r))
 	if err != nil {
 		return false, err
 	}
@@ -80,7 +80,7 @@ func (c *ProposerIndicesCache) HasProposerIndices(r [32]byte) (bool, error) {
 func (c *ProposerIndicesCache) ProposerIndices(r [32]byte) ([]types.ValidatorIndex, error) {
 	c.lock.RLock()
 	defer c.lock.RUnlock()
-	obj, exists, err := c.ProposerIndicesCache.GetByKey(key(r))
+	obj, exists, err := c.proposerIndicesCache.GetByKey(key(r))
 	if err != nil {
 		return nil, err
 	}
@@ -99,3 +99,8 @@ func (c *ProposerIndicesCache) ProposerIndices(r [32]byte) ([]types.ValidatorInd
 
 	return item.ProposerIndices, nil
 }
+
+// Len returns the number of keys in the underlying cache.
+func (c *ProposerIndicesCache) Len() int {
+	return len(c.proposerIndicesCache.ListKeys())
+}

beacon-chain/cache/proposer_indices_disabled.go

@@ -30,3 +30,7 @@ func (c *FakeProposerIndicesCache) ProposerIndices(r [32]byte) ([]types.Validato
 func (c *FakeProposerIndicesCache) HasProposerIndices(r [32]byte) (bool, error) {
 	return false, nil
 }
+
+func (c *FakeProposerIndicesCache) Len() int {
+	return 0
+}

beacon-chain/cache/proposer_indices_test.go

@@ -1,3 +1,6 @@
+//go:build !fuzz
+// +build !fuzz
+
 package cache
 
 import (
@@ -68,7 +71,5 @@ func TestProposerCache_CanRotate(t *testing.T) {
 		item := &ProposerIndices{BlockRoot: bytesutil.ToBytes32(s)}
 		require.NoError(t, cache.AddProposerIndices(item))
 	}
-
-	k := cache.ProposerIndicesCache.ListKeys()
-	assert.Equal(t, maxProposerIndicesCacheSize, uint64(len(k)))
+	assert.Equal(t, int(maxProposerIndicesCacheSize), cache.Len())
 }

beacon-chain/core/altair/BUILD.bazel

@@ -16,6 +16,7 @@ go_library(
     importpath = "github.com/prysmaticlabs/prysm/beacon-chain/core/altair",
     visibility = [
         "//beacon-chain:__subpackages__",
+        "//testing/endtoend/evaluators:__subpackages__",
         "//testing/spectest:__subpackages__",
         "//testing/util:__pkg__",
         "//validator/client:__pkg__",
@@ -32,6 +33,7 @@ go_library(
         "//beacon-chain/state/v2:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//crypto/bls:go_default_library",
         "//crypto/hash:go_default_library",
@@ -39,8 +41,6 @@ go_library(
         "//math:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/prysm/v1alpha1/attestation:go_default_library",
-        "//proto/prysm/v1alpha1/block:go_default_library",
-        "//runtime/version:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
@@ -76,13 +76,13 @@ go_test(
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//consensus-types/wrapper:go_default_library",
         "//container/trie:go_default_library",
         "//crypto/bls:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//math:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/prysm/v1alpha1/attestation:go_default_library",
-        "//proto/prysm/v1alpha1/wrapper:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",

beacon-chain/core/altair/attestation.go

@@ -11,10 +11,10 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/attestation"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"go.opencensus.io/trace"
 )
 
@@ -23,7 +23,7 @@ import (
 func ProcessAttestationsNoVerifySignature(
 	ctx context.Context,
 	beaconState state.BeaconState,
-	b block.SignedBeaconBlock,
+	b interfaces.SignedBeaconBlock,
 ) (state.BeaconState, error) {
 	if err := helpers.BeaconBlockIsNil(b); err != nil {
 		return nil, err

beacon-chain/core/altair/attestation_test.go

@@ -16,11 +16,11 @@ import (
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/crypto/bls"
 	"github.com/prysmaticlabs/prysm/math"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/attestation"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
 )

beacon-chain/core/altair/deposit_test.go

@@ -143,7 +143,8 @@ func TestProcessDeposits_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T)
 		},
 	}
 	balances := []uint64{0, 50}
-	root := depositTrie.HashTreeRoot()
+	root, err := depositTrie.HashTreeRoot()
+	require.NoError(t, err)
 	beaconState, err := stateAltair.InitializeFromProto(&ethpb.BeaconStateAltair{
 		Validators: registry,
 		Balances:   balances,
@@ -202,7 +203,8 @@ func TestProcessDeposit_SkipsInvalidDeposit(t *testing.T) {
 	dep[0].Data.Signature = make([]byte, 96)
 	trie, _, err := util.DepositTrieFromDeposits(dep)
 	require.NoError(t, err)
-	root := trie.HashTreeRoot()
+	root, err := trie.HashTreeRoot()
+	require.NoError(t, err)
 	eth1Data := &ethpb.Eth1Data{
 		DepositRoot:  root[:],
 		DepositCount: 1,

beacon-chain/core/altair/epoch_precompute.go

@@ -10,7 +10,6 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
 	"github.com/prysmaticlabs/prysm/math"
-	"github.com/prysmaticlabs/prysm/runtime/version"
 	"go.opencensus.io/trace"
 )
 
@@ -268,16 +267,12 @@ func AttestationsDelta(beaconState state.BeaconState, bal *precompute.Balance, v
 	leak := helpers.IsInInactivityLeak(prevEpoch, finalizedEpoch)
 
 	// Modified in Altair and Bellatrix.
-	var inactivityDenominator uint64
 	bias := cfg.InactivityScoreBias
-	switch beaconState.Version() {
-	case version.Altair:
-		inactivityDenominator = bias * cfg.InactivityPenaltyQuotientAltair
-	case version.Bellatrix:
-		inactivityDenominator = bias * cfg.InactivityPenaltyQuotientBellatrix
-	default:
-		return nil, nil, errors.Errorf("invalid state type version: %T", beaconState.Version())
+	inactivityPenaltyQuotient, err := beaconState.InactivityPenaltyQuotient()
+	if err != nil {
+		return nil, nil, err
 	}
+	inactivityDenominator := bias * inactivityPenaltyQuotient
 
 	for i, v := range vals {
 		rewards[i], penalties[i], err = attestationDelta(bal, v, baseRewardMultiplier, inactivityDenominator, leak)

beacon-chain/core/altair/transition.go

@@ -7,8 +7,6 @@ import (
 	e "github.com/prysmaticlabs/prysm/beacon-chain/core/epoch"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/epoch/precompute"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/config/params"
-	"github.com/prysmaticlabs/prysm/runtime/version"
 	"go.opencensus.io/trace"
 )
 
@@ -70,22 +68,14 @@ func ProcessEpoch(ctx context.Context, state state.BeaconState) (state.BeaconSta
 	}
 
 	// Modified in Altair and Bellatrix.
-	cfg := params.BeaconConfig()
-	switch state.Version() {
-	case version.Altair:
-		state, err = e.ProcessSlashings(state, cfg.ProportionalSlashingMultiplierAltair)
-		if err != nil {
-			return nil, err
-		}
-	case version.Bellatrix:
-		state, err = e.ProcessSlashings(state, cfg.ProportionalSlashingMultiplierBellatrix)
-		if err != nil {
-			return nil, err
-		}
-	default:
-		return nil, errors.Errorf("invalid state type version: %T", state.Version())
+	proportionalSlashingMultipler, err := state.ProportionalSlashingMultiplier()
+	if err != nil {
+		return nil, err
+	}
+	state, err = e.ProcessSlashings(state, proportionalSlashingMultipler)
+	if err != nil {
+		return nil, err
 	}
-
 	state, err = e.ProcessEth1DataReset(state)
 	if err != nil {
 		return nil, err

beacon-chain/core/blocks/BUILD.bazel

@@ -31,7 +31,9 @@ go_library(
         "//beacon-chain/state:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//consensus-types/wrapper:go_default_library",
         "//container/slice:go_default_library",
         "//container/trie:go_default_library",
         "//contracts/deposit:go_default_library",
@@ -44,9 +46,7 @@ go_library(
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/prysm/v1alpha1/attestation:go_default_library",
-        "//proto/prysm/v1alpha1/block:go_default_library",
         "//proto/prysm/v1alpha1/slashings:go_default_library",
-        "//proto/prysm/v1alpha1/wrapper:go_default_library",
         "//runtime/version:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
@@ -90,6 +90,7 @@ go_test(
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//consensus-types/wrapper:go_default_library",
         "//container/trie:go_default_library",
         "//crypto/bls:go_default_library",
         "//encoding/bytesutil:go_default_library",
@@ -99,7 +100,6 @@ go_test(
         "//proto/prysm/v1alpha1/attestation:go_default_library",
         "//proto/prysm/v1alpha1/attestation/aggregation:go_default_library",
         "//proto/prysm/v1alpha1/attestation/aggregation/attestations:go_default_library",
-        "//proto/prysm/v1alpha1/wrapper:go_default_library",
         "//runtime/version:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",

beacon-chain/core/blocks/attestation.go

@@ -10,11 +10,11 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/crypto/bls"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/attestation"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"go.opencensus.io/trace"
 )
 
@@ -23,7 +23,7 @@ import (
 func ProcessAttestationsNoVerifySignature(
 	ctx context.Context,
 	beaconState state.BeaconState,
-	b block.SignedBeaconBlock,
+	b interfaces.SignedBeaconBlock,
 ) (state.BeaconState, error) {
 	if err := helpers.BeaconBlockIsNil(b); err != nil {
 		return nil, err

beacon-chain/core/blocks/block_operations_fuzz_test.go

@@ -10,8 +10,8 @@ import (
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 )
 

beacon-chain/core/blocks/deposit_test.go

@@ -173,7 +173,8 @@ func TestProcessDeposits_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T)
 		},
 	}
 	balances := []uint64{0, 50}
-	root := depositTrie.HashTreeRoot()
+	root, err := depositTrie.HashTreeRoot()
+	require.NoError(t, err)
 	beaconState, err := v1.InitializeFromProto(&ethpb.BeaconState{
 		Validators: registry,
 		Balances:   balances,
@@ -233,7 +234,8 @@ func TestProcessDeposit_SkipsInvalidDeposit(t *testing.T) {
 	dep[0].Data.Signature = make([]byte, 96)
 	trie, _, err := util.DepositTrieFromDeposits(dep)
 	require.NoError(t, err)
-	root := trie.HashTreeRoot()
+	root, err := trie.HashTreeRoot()
+	require.NoError(t, err)
 	eth1Data := &ethpb.Eth1Data{
 		DepositRoot:  root[:],
 		DepositCount: 1,
@@ -289,7 +291,9 @@ func TestPreGenesisDeposits_SkipInvalidDeposit(t *testing.T) {
 		require.NoError(t, err)
 		dep[i].Proof = proof
 	}
-	root := trie.HashTreeRoot()
+	root, err := trie.HashTreeRoot()
+	require.NoError(t, err)
+
 	eth1Data := &ethpb.Eth1Data{
 		DepositRoot:  root[:],
 		DepositCount: 1,
@@ -376,7 +380,9 @@ func TestProcessDeposit_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T)
 		},
 	}
 	balances := []uint64{0, 50}
-	root := depositTrie.HashTreeRoot()
+	root, err := depositTrie.HashTreeRoot()
+	require.NoError(t, err)
+
 	beaconState, err := v1.InitializeFromProto(&ethpb.BeaconState{
 		Validators: registry,
 		Balances:   balances,

beacon-chain/core/blocks/header.go

@@ -8,9 +8,9 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 )
 
 // ProcessBlockHeader validates a block by its header.
@@ -41,7 +41,7 @@ import (
 func ProcessBlockHeader(
 	ctx context.Context,
 	beaconState state.BeaconState,
-	block block.SignedBeaconBlock,
+	block interfaces.SignedBeaconBlock,
 ) (state.BeaconState, error) {
 	if err := helpers.BeaconBlockIsNil(block); err != nil {
 		return nil, err

beacon-chain/core/blocks/header_test.go

@@ -11,10 +11,10 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/time"
 	p2ptypes "github.com/prysmaticlabs/prysm/beacon-chain/p2p/types"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/crypto/bls"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"

beacon-chain/core/blocks/payload.go

@@ -8,12 +8,12 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/encoding/ssz"
 	enginev1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/runtime/version"
 	"github.com/prysmaticlabs/prysm/time/slots"
 )
@@ -47,7 +47,7 @@ func IsMergeTransitionComplete(st state.BeaconState) (bool, error) {
 // IsMergeTransitionBlockUsingPreStatePayloadHeader returns true if the input block is the terminal merge block.
 // Terminal merge block must be associated with an empty payload header.
 // This assumes the header `h` is referenced as the parent state for block body `body.
-func IsMergeTransitionBlockUsingPreStatePayloadHeader(h *ethpb.ExecutionPayloadHeader, body block.BeaconBlockBody) (bool, error) {
+func IsMergeTransitionBlockUsingPreStatePayloadHeader(h *ethpb.ExecutionPayloadHeader, body interfaces.BeaconBlockBody) (bool, error) {
 	if h == nil || body == nil {
 		return false, errors.New("nil header or block body")
 	}
@@ -62,7 +62,7 @@ func IsMergeTransitionBlockUsingPreStatePayloadHeader(h *ethpb.ExecutionPayloadH
 // Spec code:
 // def is_execution_block(block: BeaconBlock) -> bool:
 //     return block.body.execution_payload != ExecutionPayload()
-func IsExecutionBlock(body block.BeaconBlockBody) (bool, error) {
+func IsExecutionBlock(body interfaces.BeaconBlockBody) (bool, error) {
 	if body == nil {
 		return false, errors.New("nil block body")
 	}
@@ -83,7 +83,7 @@ func IsExecutionBlock(body block.BeaconBlockBody) (bool, error) {
 // Spec code:
 // def is_execution_enabled(state: BeaconState, body: BeaconBlockBody) -> bool:
 //    return is_merge_block(state, body) or is_merge_complete(state)
-func IsExecutionEnabled(st state.BeaconState, body block.BeaconBlockBody) (bool, error) {
+func IsExecutionEnabled(st state.BeaconState, body interfaces.BeaconBlockBody) (bool, error) {
 	if st == nil || body == nil {
 		return false, errors.New("nil state or block body")
 	}
@@ -99,7 +99,7 @@ func IsExecutionEnabled(st state.BeaconState, body block.BeaconBlockBody) (bool,
 
 // IsExecutionEnabledUsingHeader returns true if the execution is enabled using post processed payload header and block body.
 // This is an optimized version of IsExecutionEnabled where beacon state is not required as an argument.
-func IsExecutionEnabledUsingHeader(header *ethpb.ExecutionPayloadHeader, body block.BeaconBlockBody) (bool, error) {
+func IsExecutionEnabledUsingHeader(header *ethpb.ExecutionPayloadHeader, body interfaces.BeaconBlockBody) (bool, error) {
 	if !isEmptyHeader(header) {
 		return true, nil
 	}

beacon-chain/core/blocks/payload_test.go

@@ -9,11 +9,11 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/encoding/ssz"
 	enginev1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"
 	"github.com/prysmaticlabs/prysm/time/slots"
@@ -338,7 +338,7 @@ func Test_IsMergeTransitionBlockUsingPayloadHeader(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			blk := util.NewBeaconBlockBellatrix()
 			blk.Block.Body.ExecutionPayload = tt.payload
-			body, err := wrapper.WrappedBellatrixBeaconBlockBody(blk.Block.Body)
+			body, err := wrapper.WrappedBeaconBlockBody(blk.Block.Body)
 			require.NoError(t, err)
 			got, err := blocks.IsMergeTransitionBlockUsingPreStatePayloadHeader(tt.header, body)
 			require.NoError(t, err)
@@ -374,7 +374,7 @@ func Test_IsExecutionBlock(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			blk := util.NewBeaconBlockBellatrix()
 			blk.Block.Body.ExecutionPayload = tt.payload
-			wrappedBlock, err := wrapper.WrappedBellatrixBeaconBlock(blk.Block)
+			wrappedBlock, err := wrapper.WrappedBeaconBlock(blk.Block)
 			require.NoError(t, err)
 			got, err := blocks.IsExecutionBlock(wrappedBlock.Body())
 			require.NoError(t, err)
@@ -445,7 +445,7 @@ func Test_IsExecutionEnabled(t *testing.T) {
 			require.NoError(t, st.SetLatestExecutionPayloadHeader(tt.header))
 			blk := util.NewBeaconBlockBellatrix()
 			blk.Block.Body.ExecutionPayload = tt.payload
-			body, err := wrapper.WrappedBellatrixBeaconBlockBody(blk.Block.Body)
+			body, err := wrapper.WrappedBeaconBlockBody(blk.Block.Body)
 			require.NoError(t, err)
 			if tt.useAltairSt {
 				st, _ = util.DeterministicGenesisStateAltair(t, 1)
@@ -511,7 +511,7 @@ func Test_IsExecutionEnabledUsingHeader(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			blk := util.NewBeaconBlockBellatrix()
 			blk.Block.Body.ExecutionPayload = tt.payload
-			body, err := wrapper.WrappedBellatrixBeaconBlockBody(blk.Block.Body)
+			body, err := wrapper.WrappedBeaconBlockBody(blk.Block.Body)
 			require.NoError(t, err)
 			got, err := blocks.IsExecutionEnabledUsingHeader(tt.header, body)
 			require.NoError(t, err)

beacon-chain/core/blocks/randao.go

@@ -7,8 +7,8 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/crypto/hash"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/time/slots"
 )
 
@@ -29,7 +29,7 @@ import (
 func ProcessRandao(
 	ctx context.Context,
 	beaconState state.BeaconState,
-	b block.SignedBeaconBlock,
+	b interfaces.SignedBeaconBlock,
 ) (state.BeaconState, error) {
 	if err := helpers.BeaconBlockIsNil(b); err != nil {
 		return nil, err

beacon-chain/core/blocks/randao_test.go

@@ -11,8 +11,8 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/config/params"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"

beacon-chain/core/blocks/signature.go

@@ -9,12 +9,12 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/signing"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/crypto/bls"
 	"github.com/prysmaticlabs/prysm/network/forks"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/attestation"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/time/slots"
 )
 
@@ -98,7 +98,7 @@ func VerifyBlockHeaderSignature(beaconState state.BeaconState, header *ethpb.Sig
 // VerifyBlockSignatureUsingCurrentFork verifies the proposer signature of a beacon block. This differs
 // from the above method by not using fork data from the state and instead retrieving it
 // via the respective epoch.
-func VerifyBlockSignatureUsingCurrentFork(beaconState state.ReadOnlyBeaconState, blk block.SignedBeaconBlock) error {
+func VerifyBlockSignatureUsingCurrentFork(beaconState state.ReadOnlyBeaconState, blk interfaces.SignedBeaconBlock) error {
 	currentEpoch := slots.ToEpoch(blk.Block().Slot())
 	fork, err := forks.Fork(currentEpoch)
 	if err != nil {

beacon-chain/core/blocks/signature_test.go

@@ -6,10 +6,10 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/signing"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/crypto/bls"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"

beacon-chain/core/epoch/precompute/justification_finalization.go

@@ -106,7 +106,7 @@ func weighJustificationAndFinalization(state state.BeaconState,
 		if err := state.SetCurrentJustifiedCheckpoint(&ethpb.Checkpoint{Epoch: prevEpoch, Root: blockRoot}); err != nil {
 			return nil, err
 		}
-		newBits := state.JustificationBits()
+		newBits = state.JustificationBits()
 		newBits.SetBitAt(1, true)
 		if err := state.SetJustificationBits(newBits); err != nil {
 			return nil, err
@@ -122,7 +122,7 @@ func weighJustificationAndFinalization(state state.BeaconState,
 		if err := state.SetCurrentJustifiedCheckpoint(&ethpb.Checkpoint{Epoch: currentEpoch, Root: blockRoot}); err != nil {
 			return nil, err
 		}
-		newBits := state.JustificationBits()
+		newBits = state.JustificationBits()
 		newBits.SetBitAt(0, true)
 		if err := state.SetJustificationBits(newBits); err != nil {
 			return nil, err

beacon-chain/core/feed/block/BUILD.bazel

@@ -10,6 +10,6 @@ go_library(
     visibility = ["//beacon-chain:__subpackages__"],
     deps = [
         "//async/event:go_default_library",
-        "//proto/prysm/v1alpha1/block:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
     ],
 )

beacon-chain/core/feed/block/events.go

@@ -2,9 +2,7 @@
 // during the runtime of a beacon node.
 package block
 
-import (
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
-)
+import "github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 
 const (
 	// ReceivedBlock is sent after a block has been received by the beacon node via p2p or RPC.
@@ -13,6 +11,6 @@ const (
 
 // ReceivedBlockData is the data sent with ReceivedBlock events.
 type ReceivedBlockData struct {
-	SignedBlock  block.SignedBeaconBlock
+	SignedBlock  interfaces.SignedBeaconBlock
 	IsOptimistic bool
 }

beacon-chain/core/feed/state/BUILD.bazel

@@ -13,7 +13,7 @@ go_library(
     ],
     deps = [
         "//async/event:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
-        "//proto/prysm/v1alpha1/block:go_default_library",
     ],
 )

beacon-chain/core/feed/state/events.go

@@ -6,8 +6,8 @@ package state
 import (
 	"time"
 
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 )
 
 const (
@@ -35,7 +35,7 @@ type BlockProcessedData struct {
 	// BlockRoot of the processed block.
 	BlockRoot [32]byte
 	// SignedBlock is the physical processed block.
-	SignedBlock block.SignedBeaconBlock
+	SignedBlock interfaces.SignedBeaconBlock
 	// Verified is true if the block's BLS contents have been verified.
 	Verified bool
 }

beacon-chain/core/helpers/BUILD.bazel

@@ -22,6 +22,7 @@ go_library(
         "//beacon-chain/state:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//container/slice:go_default_library",
         "//container/trie:go_default_library",
@@ -30,7 +31,6 @@ go_library(
         "//encoding/bytesutil:go_default_library",
         "//math:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
-        "//proto/prysm/v1alpha1/block:go_default_library",
         "//time:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_pkg_errors//:go_default_library",

beacon-chain/core/helpers/block.go

@@ -6,8 +6,8 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/interfaces"
 	types "github.com/prysmaticlabs/prysm/consensus-types/primitives"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/block"
 	"github.com/prysmaticlabs/prysm/time/slots"
 )
 
@@ -18,7 +18,7 @@ var ErrNilBeaconBlockBody = errors.New("beacon block body can't be nil")
 // BeaconBlockIsNil checks if any composite field of input signed beacon block is nil.
 // Access to these nil fields will result in run time panic,
 // it is recommended to run these checks as first line of defense.
-func BeaconBlockIsNil(b block.SignedBeaconBlock) error {
+func BeaconBlockIsNil(b interfaces.SignedBeaconBlock) error {
 	if b == nil || b.IsNil() {
 		return ErrNilSignedBeaconBlock
 	}

beacon-chain/core/helpers/genesis.go

@@ -41,7 +41,10 @@ func UpdateGenesisEth1Data(state state.BeaconState, deposits []*ethpb.Deposit, e
 		}
 	}
 
-	depositRoot := t.HashTreeRoot()
+	depositRoot, err := t.HashTreeRoot()
+	if err != nil {
+		return nil, err
+	}
 	eth1Data.DepositRoot = depositRoot[:]
 	err = state.SetEth1Data(eth1Data)
 	if err != nil {

beacon-chain/core/helpers/validators_test.go

@@ -233,7 +233,7 @@ func TestBeaconProposerIndex_BadState(t *testing.T) {
 	require.NoError(t, state.SetSlot(100))
 	_, err = BeaconProposerIndex(context.Background(), state)
 	require.NoError(t, err)
-	assert.Equal(t, 0, len(proposerIndicesCache.ProposerIndicesCache.ListKeys()))
+	assert.Equal(t, 0, proposerIndicesCache.Len())
 }
 
 func TestComputeProposerIndex_Compatibility(t *testing.T) {

beacon-chain/core/transition/BUILD.bazel

@@ -36,6 +36,7 @@ go_library(
         "//beacon-chain/state/stateutil:go_default_library",
         "//beacon-chain/state/v1:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//crypto/bls:go_default_library",
         "//crypto/hash:go_default_library",
@@ -43,7 +44,6 @@ go_library(
         "//math:go_default_library",
         "//monitoring/tracing:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
-        "//proto/prysm/v1alpha1/block:go_default_library",
         "//runtime/version:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prometheus_client_golang//prometheus:go_default_library",
@@ -85,13 +85,13 @@ go_test(
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//consensus-types/wrapper:go_default_library",
         "//crypto/bls:go_default_library",
         "//crypto/hash:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/prysm/v1alpha1/attestation:go_default_library",
-        "//proto/prysm/v1alpha1/wrapper:go_default_library",
         "//runtime/version:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/benchmark:go_default_library",

beacon-chain/core/transition/altair_transition_no_verify_sig_test.go

@@ -14,10 +14,10 @@ import (
 	p2pType "github.com/prysmaticlabs/prysm/beacon-chain/p2p/types"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/crypto/bls"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"

beacon-chain/core/transition/bellatrix_transition_no_verify_sig_test.go

@@ -15,11 +15,11 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/config/params"
+	"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/crypto/bls"
 	"github.com/prysmaticlabs/prysm/encoding/bytesutil"
 	enginev1 "github.com/prysmaticlabs/prysm/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1/wrapper"
 	"github.com/prysmaticlabs/prysm/testing/assert"
 	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/testing/util"