Resolve Web UI Beta Testing Bugs (#7471)

* more descriptive password validation error

* include change wallet password fixes

* balance and jwt improvements

* allow for different wallet dirs specified on startup

* ensure wallet password is always validated

* fix up prysm tests

* gaz

* test pass

* pass balances tests

* wrap up fixes

* radek feedback

* fix up tests

* cors fix

* add tests for validator status

* pass tests

* fix n

* skip content type test

* package level cache and send over feed

* package level cache for derived

* all tests passing

* gofmt

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

.bazelrc

@@ -33,9 +33,17 @@ build --define kafka_enabled=false
 test --define kafka_enabled=false
 run --define kafka_enabled=false
 
+# Enable blst by default, we use a config so that our fuzzer stops complaining.
+build --config=blst_enabled
+test --config=blst_enabled
+run --config=blst_enabled
+
 build:kafka_enabled --define kafka_enabled=true
 build:kafka_enabled --define gotags=kafka_enabled
 
+build:blst_enabled --define blst_enabled=true
+build:blst_enabled --define gotags=blst_enabled
+
 # Release flags
 build:release --workspace_status_command=./scripts/workspace_status.sh
 build:release --stamp
@@ -69,18 +77,13 @@ build:fuzz --copt=-fno-omit-frame-pointer
 build:fuzz --define=FUZZING_ENGINE=libfuzzer
 build:fuzz --copt=-DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
 build:fuzz --linkopt -Wl,--no-as-needed
-build:fuzz --define=gc_goopts=-d=libfuzzer
+build:fuzz --define=gc_goopts=-d=libfuzzer,checkptr
 build:fuzz --run_under=//tools:fuzz_wrapper
 build:fuzz --compilation_mode=opt
+build:fuzz --define=blst_enabled=false
 
 test:fuzz --local_test_jobs="HOST_CPUS*.5"
 
-test:fuzzit --config=fuzz
-test:fuzzit --test_env=FUZZIT_API_KEY
-test:fuzzit --test_env=PRYSM_BUILD_IMAGE=gcr.io/prysmaticlabs/prysm-fuzzit:v0.11.0
-test:fuzzit --test_timeout=1200
-test:fuzzit --run_under=//tools:fuzzit_wrapper
-
 # Build binary with cgo symbolizer for debugging / profiling.
 build:cgo_symbolizer --config=llvm
 build:cgo_symbolizer --copt=-g

.buildkite-bazelrc

@@ -3,10 +3,10 @@
 # 
 # This config is loaded from https://github.com/bazelbuild/bazel-toolchains/blob/master/bazelrc/latest.bazelrc
 build:remote-cache --remote_timeout=3600
-build:remote-cache --spawn_strategy=standalone
-build:remote-cache --strategy=Javac=standalone
-build:remote-cache --strategy=Closure=standalone
-build:remote-cache --strategy=Genrule=standalone
+#build:remote-cache --spawn_strategy=standalone
+#build:remote-cache --strategy=Javac=standalone
+#build:remote-cache --strategy=Closure=standalone
+#build:remote-cache --strategy=Genrule=standalone
 
 # Prysm specific remote-cache properties.
 #build:remote-cache --disk_cache=
@@ -34,16 +34,5 @@ build --flaky_test_attempts=5
 # Disabled race detection due to unstable test results under constrained environment build kite
 # build --features=race
 
-# Enable kafka for CI tests only.
-test --config=kafka_enabled
-
-build --bes_backend=grpcs://builds.prylabs.net:1985
-build --bes_results_url=https://builds.prylabs.net/invocation/
-
 # Disable flaky test detection for fuzzing.
 test:fuzz --flaky_test_attempts=1
-
-# Expose test environment variables in CI
-test:fuzzit --test_env=GITHUB_REF
-test:fuzzit --test_env=GITHUB_SHA
-test:fuzzit --test_env=DOCKER_HOST

.deepsource.toml

@@ -0,0 +1,12 @@
+version = 1
+
+[[analyzers]]
+name = "go"
+enabled = true
+
+  [analyzers.meta]
+  import_paths = ["github.com/prysmaticlabs/prysm"]
+
+[[analyzers]]
+name = "test-coverage"
+enabled = true

.github/workflows/go.yml

@@ -43,7 +43,8 @@ jobs:
           go get -v -t -d ./...
 
       - name: Build
-        run: go build -v ./...
+        # Use blst tag to allow go and bazel builds for blst.
+        run: go build -v --tags=blst_enabled ./...
 
 # Tests run via Bazel for now...
 #      - name: Test

.gitignore

@@ -29,3 +29,7 @@ password.txt
 
 # Dist files
 dist
+
+# libfuzzer
+oom-*
+crash-*

BUILD.bazel

@@ -104,10 +104,14 @@ nogo(
         "@org_golang_x_tools//go/analysis/passes/inspect:go_tool_library",
         "@org_golang_x_tools//go/analysis/passes/asmdecl:go_tool_library",
         "//tools/analyzers/maligned:go_tool_library",
-        "//tools/analyzers/roughtime:go_tool_library",
         "//tools/analyzers/cryptorand:go_tool_library",
         "//tools/analyzers/errcheck:go_tool_library",
         "//tools/analyzers/featureconfig:go_tool_library",
+        "//tools/analyzers/comparesame:go_tool_library",
+        "//tools/analyzers/shadowpredecl:go_tool_library",
+        "//tools/analyzers/nop:go_tool_library",
+        "//tools/analyzers/slicedirect:go_tool_library",
+        "//tools/analyzers/ineffassign:go_tool_library",
     ] + select({
         # nogo checks that fail with coverage enabled.
         ":coverage_enabled": [],

README.md

@@ -1,7 +1,7 @@
 # Prysm: An Ethereum 2.0 Client Written in Go
 
 [![Build status](https://badge.buildkite.com/b555891daf3614bae4284dcf365b2340cefc0089839526f096.svg?branch=master)](https://buildkite.com/prysmatic-labs/prysm)
-[![ETH2.0_Spec_Version 0.12.2](https://img.shields.io/badge/ETH2.0%20Spec%20Version-v0.12.2-blue.svg)](https://github.com/ethereum/eth2.0-specs/tree/v0.12.2)
+[![ETH2.0_Spec_Version 0.12.3](https://img.shields.io/badge/ETH2.0%20Spec%20Version-v0.12.3-blue.svg)](https://github.com/ethereum/eth2.0-specs/tree/v0.12.3)
 [![Discord](https://user-images.githubusercontent.com/7288322/34471967-1df7808a-efbb-11e7-9088-ed0b04151291.png)](https://discord.gg/KSA7rPr)
 [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/prysmaticlabs/geth-sharding?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
 

WORKSPACE

@@ -5,11 +5,11 @@ load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
 
 http_archive(
     name = "bazel_toolchains",
-    sha256 = "144290c4166bd67e76a54f96cd504ed86416ca3ca82030282760f0823c10be48",
-    strip_prefix = "bazel-toolchains-3.1.1",
+    sha256 = "db48eed61552e25d36fe051a65d2a329cc0fb08442627e8f13960c5ab087a44e",
+    strip_prefix = "bazel-toolchains-3.2.0",
     urls = [
-        "https://github.com/bazelbuild/bazel-toolchains/releases/download/3.1.1/bazel-toolchains-3.1.1.tar.gz",
-        "https://mirror.bazel.build/github.com/bazelbuild/bazel-toolchains/archive/3.1.1.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-toolchains/releases/download/3.2.0/bazel-toolchains-3.2.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-toolchains/releases/download/3.2.0/bazel-toolchains-3.2.0.tar.gz",
     ],
 )
 
@@ -161,6 +161,10 @@ load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
 
 gazelle_dependencies()
 
+load("@io_bazel_rules_go//extras:embed_data_deps.bzl", "go_embed_data_dependencies")
+
+go_embed_data_dependencies()
+
 load("@com_github_atlassian_bazel_tools//gometalinter:deps.bzl", "gometalinter_dependencies")
 
 gometalinter_dependencies()
@@ -215,8 +219,8 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "9e09ada15c5f494388ecdb3ab49f4554d9ed53ce904cd21c42c350e6d7b2f323",
-    url = "https://github.com/ethereum/eth2.0-spec-tests/releases/download/v0.12.2/general.tar.gz",
+    sha256 = "7e5f838e0f9110471ef8be9401ea687a8ed4d499664dc0eac34ecfdfd03c2ac3",
+    url = "https://github.com/ethereum/eth2.0-spec-tests/releases/download/v0.12.3/general.tar.gz",
 )
 
 http_archive(
@@ -231,8 +235,8 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "5fc930e200af7682a176d6025db56cec79807112bb860dca2e1e91fb160312de",
-    url = "https://github.com/ethereum/eth2.0-spec-tests/releases/download/v0.12.2/minimal.tar.gz",
+    sha256 = "72c2f561db879ddcdf729fef93d10e0f9162b4cf3a697c513ef8935b93f6165a",
+    url = "https://github.com/ethereum/eth2.0-spec-tests/releases/download/v0.12.3/minimal.tar.gz",
 )
 
 http_archive(
@@ -247,8 +251,8 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "fbab14605a0178ef4c8f7efea0de275a22b815a8d3245099f0f5525f7a33faf8",
-    url = "https://github.com/ethereum/eth2.0-spec-tests/releases/download/v0.12.2/mainnet.tar.gz",
+    sha256 = "63eca02503692a0b6a2d7b70118e0dd62dff094153a3a542af6dbea721841b0d",
+    url = "https://github.com/ethereum/eth2.0-spec-tests/releases/download/v0.12.3/mainnet.tar.gz",
 )
 
 http_archive(
@@ -336,6 +340,22 @@ go_binary(
     urls = ["https://github.com/ferranbt/fastssz/archive/06015a5d84f9e4eefe2c21377ca678fa8f1a1b09.tar.gz"],
 )
 
+http_archive(
+    name = "prysm_web_ui",
+    build_file_content = """
+filegroup(
+    name = "site",
+    srcs = glob(["**/*"]),
+    visibility = ["//visibility:public"],
+)
+""",
+    sha256 = "507d574be56a63d5a30a28b4426b9ece89cf70bbb29739e982e0a8fdf1285e3a",
+    urls = [
+        "https://prysmaticlabs.com/uploads/prysm-web-ui.0.0.1-alpha.tar.gz",
+        "https://github.com/prysmaticlabs/prysm-web-ui/releases/download/0.0.1-alpha/prysm-web-ui.tar.gz",
+    ],
+)
+
 load("//:deps.bzl", "prysm_deps")
 
 # gazelle:repository_macro deps.bzl%prysm_deps

beacon-chain/blockchain/BUILD.bazel

@@ -5,6 +5,7 @@ go_library(
     name = "go_default_library",
     srcs = [
         "chain_info.go",
+        "checkpoint_info_cache.go",
         "head.go",
         "info.go",
         "init_sync_process_block.go",
@@ -17,9 +18,13 @@ go_library(
         "receive_attestation.go",
         "receive_block.go",
         "service.go",
+        "weak_subjectivity_checks.go",
     ],
     importpath = "github.com/prysmaticlabs/prysm/beacon-chain/blockchain",
-    visibility = ["//beacon-chain:__subpackages__"],
+    visibility = [
+        "//beacon-chain:__subpackages__",
+        "//fuzz:__pkg__",
+    ],
     deps = [
         "//beacon-chain/cache:go_default_library",
         "//beacon-chain/cache/depositcache:go_default_library",
@@ -30,6 +35,7 @@ go_library(
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/core/state:go_default_library",
         "//beacon-chain/db:go_default_library",
+        "//beacon-chain/db/filters:go_default_library",
         "//beacon-chain/flags:go_default_library",
         "//beacon-chain/forkchoice:go_default_library",
         "//beacon-chain/forkchoice/protoarray:go_default_library",
@@ -40,17 +46,18 @@ go_library(
         "//beacon-chain/powchain:go_default_library",
         "//beacon-chain/state:go_default_library",
         "//beacon-chain/state/stategen:go_default_library",
-        "//beacon-chain/state/stateutil:go_default_library",
         "//proto/beacon/p2p/v1:go_default_library",
         "//shared/attestationutil:go_default_library",
         "//shared/bls:go_default_library",
         "//shared/bytesutil:go_default_library",
         "//shared/featureconfig:go_default_library",
+        "//shared/hashutil:go_default_library",
         "//shared/params:go_default_library",
-        "//shared/roughtime:go_default_library",
         "//shared/slotutil:go_default_library",
+        "//shared/timeutils:go_default_library",
         "//shared/traceutil:go_default_library",
         "@com_github_emicklei_dot//:go_default_library",
+        "@com_github_hashicorp_golang_lru//:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prometheus_client_golang//prometheus:go_default_library",
         "@com_github_prometheus_client_golang//prometheus/promauto:go_default_library",
@@ -73,6 +80,7 @@ go_test(
     size = "medium",
     srcs = [
         "chain_info_test.go",
+        "checkpoint_info_cache_test.go",
         "head_test.go",
         "info_test.go",
         "process_attestation_test.go",
@@ -80,6 +88,7 @@ go_test(
         "receive_attestation_test.go",
         "receive_block_test.go",
         "service_test.go",
+        "weak_subjectivity_checks_test.go",
     ],
     embed = [":go_default_library"],
     deps = [

beacon-chain/blockchain/chain_info.go

@@ -5,14 +5,14 @@ import (
 	"time"
 
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	"go.opencensus.io/trace"
+
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/protoarray"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
-	"go.opencensus.io/trace"
 )
 
 // ChainInfoFetcher defines a common interface for methods in blockchain service which
@@ -97,6 +97,9 @@ func (s *Service) PreviousJustifiedCheckpt() *ethpb.Checkpoint {
 
 // HeadSlot returns the slot of the head of the chain.
 func (s *Service) HeadSlot() uint64 {
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
+
 	if !s.hasHeadState() {
 		return 0
 	}
@@ -106,6 +109,9 @@ func (s *Service) HeadSlot() uint64 {
 
 // HeadRoot returns the root of the head of the chain.
 func (s *Service) HeadRoot(ctx context.Context) ([]byte, error) {
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
+
 	if s.headRoot() != params.BeaconConfig().ZeroHash {
 		r := s.headRoot()
 		return r[:], nil
@@ -119,7 +125,7 @@ func (s *Service) HeadRoot(ctx context.Context) ([]byte, error) {
 		return params.BeaconConfig().ZeroHash[:], nil
 	}
 
-	r, err := stateutil.BlockRoot(b.Block)
+	r, err := b.Block.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
@@ -131,6 +137,9 @@ func (s *Service) HeadRoot(ctx context.Context) ([]byte, error) {
 // 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) (*ethpb.SignedBeaconBlock, error) {
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
+
 	if s.hasHeadState() {
 		return s.headBlock(), nil
 	}
@@ -144,6 +153,8 @@ func (s *Service) HeadBlock(ctx context.Context) (*ethpb.SignedBeaconBlock, erro
 func (s *Service) HeadState(ctx context.Context) (*state.BeaconState, error) {
 	ctx, span := trace.StartSpan(ctx, "blockChain.HeadState")
 	defer span.End()
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
 
 	ok := s.hasHeadState()
 	span.AddAttributes(trace.BoolAttribute("cache_hit", ok))
@@ -157,6 +168,9 @@ func (s *Service) HeadState(ctx context.Context) (*state.BeaconState, error) {
 
 // HeadValidatorsIndices returns a list of active validator indices from the head view of a given epoch.
 func (s *Service) HeadValidatorsIndices(ctx context.Context, epoch uint64) ([]uint64, error) {
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
+
 	if !s.hasHeadState() {
 		return []uint64{}, nil
 	}
@@ -165,6 +179,9 @@ func (s *Service) HeadValidatorsIndices(ctx context.Context, epoch uint64) ([]ui
 
 // HeadSeed returns the seed from the head view of a given epoch.
 func (s *Service) HeadSeed(ctx context.Context, epoch uint64) ([32]byte, error) {
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
+
 	if !s.hasHeadState() {
 		return [32]byte{}, nil
 	}
@@ -174,6 +191,9 @@ func (s *Service) HeadSeed(ctx context.Context, epoch uint64) ([32]byte, error)
 
 // HeadGenesisValidatorRoot returns genesis validator root of the head state.
 func (s *Service) HeadGenesisValidatorRoot() [32]byte {
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
+
 	if !s.hasHeadState() {
 		return [32]byte{}
 	}
@@ -183,6 +203,9 @@ func (s *Service) HeadGenesisValidatorRoot() [32]byte {
 
 // HeadETH1Data returns the eth1data of the current head state.
 func (s *Service) HeadETH1Data() *ethpb.Eth1Data {
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
+
 	if !s.hasHeadState() {
 		return &ethpb.Eth1Data{}
 	}
@@ -202,6 +225,9 @@ func (s *Service) GenesisTime() time.Time {
 // GenesisValidatorRoot returns the genesis validator
 // root of the chain.
 func (s *Service) GenesisValidatorRoot() [32]byte {
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
+
 	if !s.hasHeadState() {
 		return [32]byte{}
 	}
@@ -210,6 +236,9 @@ func (s *Service) GenesisValidatorRoot() [32]byte {
 
 // CurrentFork retrieves the latest fork information of the beacon chain.
 func (s *Service) CurrentFork() *pb.Fork {
+	s.headLock.RLock()
+	defer s.headLock.RUnlock()
+
 	if !s.hasHeadState() {
 		return &pb.Fork{
 			PreviousVersion: params.BeaconConfig().GenesisForkVersion,

beacon-chain/blockchain/chain_info_test.go

@@ -1,7 +1,6 @@
 package blockchain
 
 import (
-	"bytes"
 	"context"
 	"testing"
 	"time"
@@ -11,22 +10,22 @@ import (
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
+	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
 )
 
 // Ensure Service implements chain info interface.
-var _ = ChainInfoFetcher(&Service{})
-var _ = TimeFetcher(&Service{})
-var _ = ForkFetcher(&Service{})
+var _ ChainInfoFetcher = (*Service)(nil)
+var _ TimeFetcher = (*Service)(nil)
+var _ ForkFetcher = (*Service)(nil)
 
 func TestFinalizedCheckpt_Nil(t *testing.T) {
 	db, sc := testDB.SetupDB(t)
 	c := setupBeaconChain(t, db, sc)
-	if !bytes.Equal(c.FinalizedCheckpt().Root, params.BeaconConfig().ZeroHash[:]) {
-		t.Error("Incorrect pre chain start value")
-	}
+	assert.DeepEqual(t, params.BeaconConfig().ZeroHash[:], c.FinalizedCheckpt().Root, "Incorrect pre chain start value")
 }
 
 func TestHeadRoot_Nil(t *testing.T) {
@@ -34,15 +33,13 @@ func TestHeadRoot_Nil(t *testing.T) {
 	c := setupBeaconChain(t, db, sc)
 	headRoot, err := c.HeadRoot(context.Background())
 	require.NoError(t, err)
-	if !bytes.Equal(headRoot, params.BeaconConfig().ZeroHash[:]) {
-		t.Error("Incorrect pre chain start value")
-	}
+	assert.DeepEqual(t, params.BeaconConfig().ZeroHash[:], headRoot, "Incorrect pre chain start value")
 }
 
 func TestFinalizedCheckpt_CanRetrieve(t *testing.T) {
 	db, sc := testDB.SetupDB(t)
 
-	cp := &ethpb.Checkpoint{Epoch: 5, Root: []byte("foo")}
+	cp := &ethpb.Checkpoint{Epoch: 5, Root: bytesutil.PadTo([]byte("foo"), 32)}
 	c := setupBeaconChain(t, db, sc)
 	c.finalizedCheckpt = cp
 
@@ -57,16 +54,13 @@ func TestFinalizedCheckpt_GenesisRootOk(t *testing.T) {
 	c := setupBeaconChain(t, db, sc)
 	c.finalizedCheckpt = cp
 	c.genesisRoot = genesisRoot
-
-	if !bytes.Equal(c.FinalizedCheckpt().Root, c.genesisRoot[:]) {
-		t.Errorf("Got: %v, wanted: %v", c.FinalizedCheckpt().Root, c.genesisRoot[:])
-	}
+	assert.DeepEqual(t, c.genesisRoot[:], c.FinalizedCheckpt().Root)
 }
 
 func TestCurrentJustifiedCheckpt_CanRetrieve(t *testing.T) {
 	db, sc := testDB.SetupDB(t)
 
-	cp := &ethpb.Checkpoint{Epoch: 6, Root: []byte("foo")}
+	cp := &ethpb.Checkpoint{Epoch: 6, Root: bytesutil.PadTo([]byte("foo"), 32)}
 	c := setupBeaconChain(t, db, sc)
 	c.justifiedCheckpt = cp
 
@@ -81,19 +75,15 @@ func TestJustifiedCheckpt_GenesisRootOk(t *testing.T) {
 	c := setupBeaconChain(t, db, sc)
 	c.justifiedCheckpt = cp
 	c.genesisRoot = genesisRoot
-
-	if !bytes.Equal(c.CurrentJustifiedCheckpt().Root, c.genesisRoot[:]) {
-		t.Errorf("Got: %v, wanted: %v", c.CurrentJustifiedCheckpt().Root, c.genesisRoot[:])
-	}
+	assert.DeepEqual(t, c.genesisRoot[:], c.CurrentJustifiedCheckpt().Root)
 }
 
 func TestPreviousJustifiedCheckpt_CanRetrieve(t *testing.T) {
 	db, sc := testDB.SetupDB(t)
 
-	cp := &ethpb.Checkpoint{Epoch: 7, Root: []byte("foo")}
+	cp := &ethpb.Checkpoint{Epoch: 7, Root: bytesutil.PadTo([]byte("foo"), 32)}
 	c := setupBeaconChain(t, db, sc)
 	c.prevJustifiedCheckpt = cp
-
 	assert.Equal(t, cp.Epoch, c.PreviousJustifiedCheckpt().Epoch, "Unexpected previous justified epoch")
 }
 
@@ -105,30 +95,28 @@ func TestPrevJustifiedCheckpt_GenesisRootOk(t *testing.T) {
 	c := setupBeaconChain(t, db, sc)
 	c.prevJustifiedCheckpt = cp
 	c.genesisRoot = genesisRoot
-
-	if !bytes.Equal(c.PreviousJustifiedCheckpt().Root, c.genesisRoot[:]) {
-		t.Errorf("Got: %v, wanted: %v", c.PreviousJustifiedCheckpt().Root, c.genesisRoot[:])
-	}
+	assert.DeepEqual(t, c.genesisRoot[:], c.PreviousJustifiedCheckpt().Root)
 }
 
 func TestHeadSlot_CanRetrieve(t *testing.T) {
 	c := &Service{}
 	s, err := state.InitializeFromProto(&pb.BeaconState{})
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 	c.head = &head{slot: 100, state: s}
-	assert.Equal(t, uint64(100), c.headSlot())
+	assert.Equal(t, uint64(100), c.HeadSlot())
 }
 
 func TestHeadRoot_CanRetrieve(t *testing.T) {
 	c := &Service{}
 	c.head = &head{root: [32]byte{'A'}}
-	assert.Equal(t, [32]byte{'A'}, c.headRoot())
+	r, err := c.HeadRoot(context.Background())
+	require.NoError(t, err)
+	assert.Equal(t, [32]byte{'A'}, bytesutil.ToBytes32(r))
 }
 
 func TestHeadBlock_CanRetrieve(t *testing.T) {
-	b := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 1}}
+	b := testutil.NewBeaconBlock()
+	b.Block.Slot = 1
 	s, err := state.InitializeFromProto(&pb.BeaconState{})
 	require.NoError(t, err)
 	c := &Service{}
@@ -146,9 +134,7 @@ func TestHeadState_CanRetrieve(t *testing.T) {
 	c.head = &head{state: s}
 	headState, err := c.HeadState(context.Background())
 	require.NoError(t, err)
-	if !proto.Equal(s.InnerStateUnsafe(), headState.InnerStateUnsafe()) {
-		t.Error("incorrect head state received")
-	}
+	assert.DeepEqual(t, headState.InnerStateUnsafe(), s.InnerStateUnsafe(), "Incorrect head state received")
 }
 
 func TestGenesisTime_CanRetrieve(t *testing.T) {

beacon-chain/blockchain/checkpoint_info_cache.go

@@ -0,0 +1,83 @@
+package blockchain
+
+import (
+	"sync"
+
+	lru "github.com/hashicorp/golang-lru"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
+	"github.com/prysmaticlabs/prysm/shared/hashutil"
+)
+
+var (
+	// This defines the max number of checkpoint info this cache can store.
+	// Each cache is calculated at 3MB(30K validators), the total cache size is around 100MB.
+	// Due to reorgs and long finality, it's good to keep the old cache around for quickly switch over.
+	maxInfoSize = 32
+
+	// This tracks the number of check point info requests that aren't present in the cache.
+	infoMiss = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "check_point_info_cache_miss",
+		Help: "The number of check point info requests that aren't present in the cache.",
+	})
+	// This tracks the number of check point info requests that are in the cache.
+	infoHit = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "check_point_info_cache_hit",
+		Help: "The number of check point info requests that are present in the cache.",
+	})
+)
+
+// checkPtInfoCache is a struct with 1 LRU cache for looking up check point info by checkpoint.
+type checkPtInfoCache struct {
+	cache *lru.Cache
+	lock  sync.RWMutex
+}
+
+// newCheckPointInfoCache creates a new checkpoint info cache for storing/accessing processed check point info object.
+func newCheckPointInfoCache() *checkPtInfoCache {
+	cache, err := lru.New(maxInfoSize)
+	if err != nil {
+		panic(err)
+	}
+	return &checkPtInfoCache{
+		cache: cache,
+	}
+}
+
+// get fetches check point info by check point. Returns the reference of the CheckPtInfo, nil if doesn't exist.
+func (c *checkPtInfoCache) get(cp *ethpb.Checkpoint) (*pb.CheckPtInfo, error) {
+	c.lock.RLock()
+	defer c.lock.RUnlock()
+	h, err := hashutil.HashProto(cp)
+	if err != nil {
+		return nil, err
+	}
+
+	item, exists := c.cache.Get(h)
+
+	if exists && item != nil {
+		infoHit.Inc()
+		// Copy here is unnecessary since the returned check point info object
+		// will only be used to verify attestation signature.
+		return item.(*pb.CheckPtInfo), nil
+	}
+
+	infoMiss.Inc()
+	return nil, nil
+}
+
+// put adds CheckPtInfo object to the cache. This method also trims the least
+// recently added CheckPtInfo object if the cache size has ready the max cache size limit.
+func (c *checkPtInfoCache) put(cp *ethpb.Checkpoint, info *pb.CheckPtInfo) error {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+	h, err := hashutil.HashProto(cp)
+	if err != nil {
+		return err
+	}
+
+	c.cache.Add(h, info)
+	return nil
+}

beacon-chain/blockchain/checkpoint_info_cache_test.go

@@ -0,0 +1,41 @@
+package blockchain
+
+import (
+	"testing"
+
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
+	"github.com/prysmaticlabs/prysm/shared/testutil/require"
+)
+
+func TestHotStateCache_RoundTrip(t *testing.T) {
+	c := newCheckPointInfoCache()
+	cp := &ethpb.Checkpoint{
+		Epoch: 1,
+		Root:  bytesutil.PadTo([]byte{'a'}, 32),
+	}
+	info, err := c.get(cp)
+	require.NoError(t, err)
+	require.Equal(t, (*pb.CheckPtInfo)(nil), info)
+
+	i := &pb.CheckPtInfo{
+		Seed:          bytesutil.PadTo([]byte{'c'}, 32),
+		GenesisRoot:   bytesutil.PadTo([]byte{'d'}, 32),
+		ActiveIndices: []uint64{0, 1, 2, 3},
+	}
+
+	require.NoError(t, c.put(cp, i))
+	info, err = c.get(cp)
+	require.NoError(t, err)
+	require.DeepEqual(t, info, i)
+}
+
+func TestHotStateCache_CanPrune(t *testing.T) {
+	c := newCheckPointInfoCache()
+	for i := 0; i < maxInfoSize+1; i++ {
+		cp := &ethpb.Checkpoint{Epoch: uint64(i), Root: make([]byte, 32)}
+		require.NoError(t, c.put(cp, &pb.CheckPtInfo{}))
+	}
+	require.Equal(t, len(c.cache.Keys()), maxInfoSize)
+}

beacon-chain/blockchain/head.go

@@ -72,7 +72,11 @@ func (s *Service) saveHead(ctx context.Context, headRoot [32]byte) error {
 	defer span.End()
 
 	// Do nothing if head hasn't changed.
-	if headRoot == s.headRoot() {
+	r, err := s.HeadRoot(ctx)
+	if err != nil {
+		return err
+	}
+	if headRoot == bytesutil.ToBytes32(r) {
 		return nil
 	}
 
@@ -101,16 +105,17 @@ func (s *Service) saveHead(ctx context.Context, headRoot [32]byte) error {
 	}
 
 	// A chain re-org occurred, so we fire an event notifying the rest of the services.
-	if bytesutil.ToBytes32(newHeadBlock.Block.ParentRoot) != s.headRoot() {
+	headSlot := s.HeadSlot()
+	if bytesutil.ToBytes32(newHeadBlock.Block.ParentRoot) != bytesutil.ToBytes32(r) {
 		log.WithFields(logrus.Fields{
 			"newSlot": fmt.Sprintf("%d", newHeadBlock.Block.Slot),
-			"oldSlot": fmt.Sprintf("%d", s.headSlot()),
+			"oldSlot": fmt.Sprintf("%d", headSlot),
 		}).Debug("Chain reorg occurred")
 		s.stateNotifier.StateFeed().Send(&feed.Event{
 			Type: statefeed.Reorg,
 			Data: &statefeed.ReorgData{
 				NewSlot: newHeadBlock.Block.Slot,
-				OldSlot: s.headSlot(),
+				OldSlot: headSlot,
 			},
 		})
 
@@ -179,60 +184,56 @@ func (s *Service) setHeadInitialSync(root [32]byte, block *ethpb.SignedBeaconBlo
 }
 
 // This returns the head slot.
+// This is a lock free version.
 func (s *Service) headSlot() uint64 {
-	s.headLock.RLock()
-	defer s.headLock.RUnlock()
-
 	return s.head.slot
 }
 
 // This returns the head root.
 // It does a full copy on head root for immutability.
+// This is a lock free version.
 func (s *Service) headRoot() [32]byte {
 	if s.head == nil {
 		return params.BeaconConfig().ZeroHash
 	}
 
-	s.headLock.RLock()
-	defer s.headLock.RUnlock()
-
 	return s.head.root
 }
 
 // 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() *ethpb.SignedBeaconBlock {
-	s.headLock.RLock()
-	defer s.headLock.RUnlock()
-
 	return stateTrie.CopySignedBeaconBlock(s.head.block)
 }
 
 // This returns the head state.
 // It does a full copy on head state for immutability.
+// This is a lock free version.
 func (s *Service) headState(ctx context.Context) *stateTrie.BeaconState {
 	ctx, span := trace.StartSpan(ctx, "blockChain.headState")
 	defer span.End()
 
-	s.headLock.RLock()
-	defer s.headLock.RUnlock()
-
 	return s.head.state.Copy()
 }
 
 // This returns the genesis validator root of the head state.
+// This is a lock free version.
 func (s *Service) headGenesisValidatorRoot() [32]byte {
-	s.headLock.RLock()
-	defer s.headLock.RUnlock()
-
 	return bytesutil.ToBytes32(s.head.state.GenesisValidatorRoot())
 }
 
-// Returns true if head state exists.
-func (s *Service) hasHeadState() bool {
+// HasHeadState returns true if head state exists.
+func (s *Service) HasHeadState() bool {
 	s.headLock.RLock()
 	defer s.headLock.RUnlock()
 
+	return s.hasHeadState()
+}
+
+// Returns true if head state exists.
+// This is the lock free version.
+func (s *Service) hasHeadState() bool {
 	return s.head != nil && s.head.state != nil
 }
 

beacon-chain/blockchain/head_test.go

@@ -5,9 +5,7 @@ import (
 	"context"
 	"testing"
 
-	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
@@ -35,11 +33,12 @@ func TestSaveHead_Different(t *testing.T) {
 	oldRoot := [32]byte{'A'}
 	service.head = &head{slot: 0, root: oldRoot}
 
-	newHeadBlock := &ethpb.BeaconBlock{Slot: 1}
-	newHeadSignedBlock := &ethpb.SignedBeaconBlock{Block: newHeadBlock}
+	newHeadSignedBlock := testutil.NewBeaconBlock()
+	newHeadSignedBlock.Block.Slot = 1
+	newHeadBlock := newHeadSignedBlock.Block
 
 	require.NoError(t, service.beaconDB.SaveBlock(context.Background(), newHeadSignedBlock))
-	newRoot, err := stateutil.BlockRoot(newHeadBlock)
+	newRoot, err := newHeadBlock.HashTreeRoot()
 	require.NoError(t, err)
 	headState := testutil.NewBeaconState()
 	require.NoError(t, headState.SetSlot(1))
@@ -68,14 +67,13 @@ func TestSaveHead_Different_Reorg(t *testing.T) {
 	service.head = &head{slot: 0, root: oldRoot}
 
 	reorgChainParent := [32]byte{'B'}
-	newHeadBlock := &ethpb.BeaconBlock{
-		Slot:       1,
-		ParentRoot: reorgChainParent[:],
-	}
-	newHeadSignedBlock := &ethpb.SignedBeaconBlock{Block: newHeadBlock}
+	newHeadSignedBlock := testutil.NewBeaconBlock()
+	newHeadSignedBlock.Block.Slot = 1
+	newHeadSignedBlock.Block.ParentRoot = reorgChainParent[:]
+	newHeadBlock := newHeadSignedBlock.Block
 
 	require.NoError(t, service.beaconDB.SaveBlock(context.Background(), newHeadSignedBlock))
-	newRoot, err := stateutil.BlockRoot(newHeadBlock)
+	newRoot, err := newHeadBlock.HashTreeRoot()
 	require.NoError(t, err)
 	headState := testutil.NewBeaconState()
 	require.NoError(t, headState.SetSlot(1))

beacon-chain/blockchain/info.go

@@ -34,7 +34,12 @@ const template = `<html>
 
 // TreeHandler is a handler to serve /tree page in metrics.
 func (s *Service) TreeHandler(w http.ResponseWriter, r *http.Request) {
-	if s.headState(r.Context()) == nil {
+	headState, err := s.HeadState(r.Context())
+	if err != nil {
+		log.WithError(err).Error("Could not get head state")
+		return
+	}
+	if headState == nil {
 		if _, err := w.Write([]byte("Unavailable during initial syncing")); err != nil {
 			log.WithError(err).Error("Failed to render p2p info page")
 		}
@@ -47,7 +52,7 @@ func (s *Service) TreeHandler(w http.ResponseWriter, r *http.Request) {
 	graph.Attr("labeljust", "l")
 
 	dotNodes := make([]*dot.Node, len(nodes))
-	avgBalance := uint64(averageBalance(s.headState(r.Context()).Balances()))
+	avgBalance := uint64(averageBalance(headState.Balances()))
 
 	for i := len(nodes) - 1; i >= 0; i-- {
 		// Construct label for each node.
@@ -63,7 +68,7 @@ func (s *Service) TreeHandler(w http.ResponseWriter, r *http.Request) {
 			dotN = graph.Node(index).Box().Attr("label", label)
 		}
 
-		if nodes[i].Slot() == s.headSlot() &&
+		if nodes[i].Slot() == s.HeadSlot() &&
 			nodes[i].BestDescendant() == ^uint64(0) &&
 			nodes[i].Parent() != ^uint64(0) {
 			dotN = dotN.Attr("color", "green")

beacon-chain/blockchain/info_test.go

@@ -33,6 +33,7 @@ func TestService_TreeHandler(t *testing.T) {
 		StateGen: stategen.New(db, sCache),
 	}
 	s, err := NewService(ctx, cfg)
+	require.NoError(t, err)
 	require.NoError(t, s.forkChoiceStore.ProcessBlock(ctx, 0, [32]byte{'a'}, [32]byte{'g'}, [32]byte{'c'}, 0, 0))
 	require.NoError(t, s.forkChoiceStore.ProcessBlock(ctx, 1, [32]byte{'b'}, [32]byte{'a'}, [32]byte{'c'}, 0, 0))
 	s.setHead([32]byte{'a'}, testutil.NewBeaconBlock(), headState)

beacon-chain/blockchain/log.go

@@ -6,6 +6,7 @@ import (
 
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/sirupsen/logrus"
 )
 
@@ -25,9 +26,10 @@ func logStateTransitionData(b *ethpb.BeaconBlock) {
 func logBlockSyncStatus(block *ethpb.BeaconBlock, blockRoot [32]byte, finalized *ethpb.Checkpoint) {
 	log.WithFields(logrus.Fields{
 		"slot":           block.Slot,
+		"slotInEpoch":    block.Slot % params.BeaconConfig().SlotsPerEpoch,
 		"block":          fmt.Sprintf("0x%s...", hex.EncodeToString(blockRoot[:])[:8]),
 		"epoch":          helpers.SlotToEpoch(block.Slot),
 		"finalizedEpoch": finalized.Epoch,
-		"finalizedRoot":  fmt.Sprintf("0x%s...", hex.EncodeToString(finalized.Root[:])[:8]),
+		"finalizedRoot":  fmt.Sprintf("0x%s...", hex.EncodeToString(finalized.Root)[:8]),
 	}).Info("Synced new block")
 }

beacon-chain/blockchain/metrics.go

@@ -11,7 +11,7 @@ import (
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
-	"github.com/prysmaticlabs/prysm/shared/roughtime"
+	"github.com/prysmaticlabs/prysm/shared/timeutils"
 )
 
 var (
@@ -76,14 +76,26 @@ var (
 		Name: "current_eth1_data_deposit_count",
 		Help: "The current eth1 deposit count in the last processed state eth1data field.",
 	})
-	totalEligibleBalances = promauto.NewGauge(prometheus.GaugeOpts{
-		Name: "total_eligible_balances",
-		Help: "The total amount of ether, in gwei, that is eligible for voting of previous epoch",
+	stateTrieReferences = promauto.NewGaugeVec(prometheus.GaugeOpts{
+		Name: "field_references",
+		Help: "The number of states a particular field is shared with.",
+	}, []string{"state"})
+	prevEpochActiveBalances = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "beacon_prev_epoch_active_gwei",
+		Help: "The total amount of ether, in gwei, that was active for voting of previous epoch",
 	})
-	totalVotedTargetBalances = promauto.NewGauge(prometheus.GaugeOpts{
-		Name: "total_voted_target_balances",
+	prevEpochSourceBalances = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "beacon_prev_epoch_source_gwei",
+		Help: "The total amount of ether, in gwei, that has been used in voting attestation source of previous epoch",
+	})
+	prevEpochTargetBalances = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "beacon_prev_epoch_target_gwei",
 		Help: "The total amount of ether, in gwei, that has been used in voting attestation target of previous epoch",
 	})
+	prevEpochHeadBalances = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "beacon_prev_epoch_head_gwei",
+		Help: "The total amount of ether, in gwei, that has been used in voting attestation head of previous epoch",
+	})
 	reorgCount = promauto.NewCounter(prometheus.CounterOpts{
 		Name: "beacon_reorg_total",
 		Help: "Count the number of times beacon chain has a reorg",
@@ -102,6 +114,15 @@ var (
 			Buckets: []float64{1, 2, 3, 4, 6, 32, 64},
 		},
 	)
+	// TODO(7141): Remove deprecated metrics below.
+	totalEligibleBalances = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "total_eligible_balances",
+		Help: "The total amount of ether, in gwei, that is eligible for voting of previous epoch",
+	})
+	totalVotedTargetBalances = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "total_voted_target_balances",
+		Help: "The total amount of ether, in gwei, that has been used in voting attestation target of previous epoch",
+	})
 )
 
 // reportSlotMetrics reports slot related metrics.
@@ -201,6 +222,14 @@ func reportEpochMetrics(state *stateTrie.BeaconState) {
 	if precompute.Balances != nil {
 		totalEligibleBalances.Set(float64(precompute.Balances.ActivePrevEpoch))
 		totalVotedTargetBalances.Set(float64(precompute.Balances.PrevEpochTargetAttested))
+		prevEpochActiveBalances.Set(float64(precompute.Balances.ActivePrevEpoch))
+		prevEpochSourceBalances.Set(float64(precompute.Balances.PrevEpochAttested))
+		prevEpochTargetBalances.Set(float64(precompute.Balances.PrevEpochTargetAttested))
+		prevEpochHeadBalances.Set(float64(precompute.Balances.PrevEpochHeadAttested))
+	}
+	refMap := state.FieldReferencesCount()
+	for name, val := range refMap {
+		stateTrieReferences.WithLabelValues(name).Set(float64(val))
 	}
 }
 
@@ -210,7 +239,7 @@ func captureSentTimeMetric(genesisTime uint64, currentSlot uint64) error {
 	if err != nil {
 		return err
 	}
-	diffMs := roughtime.Now().Sub(startTime) / time.Millisecond
+	diffMs := timeutils.Now().Sub(startTime) / time.Millisecond
 	sentBlockPropagationHistogram.Observe(float64(diffMs))
 
 	return nil

beacon-chain/blockchain/process_attestation.go

@@ -8,9 +8,12 @@ import (
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/shared/attestationutil"
+	"github.com/prysmaticlabs/prysm/shared/bls"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
+	"github.com/prysmaticlabs/prysm/shared/featureconfig"
 	"github.com/prysmaticlabs/prysm/shared/params"
-	"github.com/prysmaticlabs/prysm/shared/roughtime"
+	"github.com/prysmaticlabs/prysm/shared/timeutils"
 	"go.opencensus.io/trace"
 )
 
@@ -66,6 +69,53 @@ func (s *Service) onAttestation(ctx context.Context, a *ethpb.Attestation) ([]ui
 		return nil, ErrTargetRootNotInDB
 	}
 
+	if featureconfig.Get().UseCheckPointInfoCache {
+		c, err := s.AttestationCheckPtInfo(ctx, a)
+		if err != nil {
+			return nil, err
+		}
+		if err := s.verifyAttTargetEpoch(ctx, uint64(s.genesisTime.Unix()), uint64(timeutils.Now().Unix()), tgt); err != nil {
+			return nil, err
+		}
+		if err := s.verifyBeaconBlock(ctx, a.Data); err != nil {
+			return nil, errors.Wrap(err, "could not verify attestation beacon block")
+		}
+		if err := s.verifyLMDFFGConsistent(ctx, a.Data.Target.Epoch, a.Data.Target.Root, a.Data.BeaconBlockRoot); err != nil {
+			return nil, errors.Wrap(err, "could not verify attestation beacon block")
+		}
+		if err := helpers.VerifySlotTime(uint64(s.genesisTime.Unix()), a.Data.Slot+1, params.BeaconNetworkConfig().MaximumGossipClockDisparity); err != nil {
+			return nil, err
+		}
+		committee, err := helpers.BeaconCommittee(c.ActiveIndices, bytesutil.ToBytes32(c.Seed), a.Data.Slot, a.Data.CommitteeIndex)
+		if err != nil {
+			return nil, err
+		}
+		indexedAtt := attestationutil.ConvertToIndexed(ctx, a, committee)
+		if err := attestationutil.IsValidAttestationIndices(ctx, indexedAtt); err != nil {
+			return nil, err
+		}
+		domain, err := helpers.Domain(c.Fork, indexedAtt.Data.Target.Epoch, params.BeaconConfig().DomainBeaconAttester, c.GenesisRoot)
+		if err != nil {
+			return nil, err
+		}
+		indices := indexedAtt.AttestingIndices
+		pubkeys := []bls.PublicKey{}
+		for i := 0; i < len(indices); i++ {
+			pubkeyAtIdx := c.PubKeys[indices[i]]
+			pk, err := bls.PublicKeyFromBytes(pubkeyAtIdx)
+			if err != nil {
+				return nil, err
+			}
+			pubkeys = append(pubkeys, pk)
+		}
+		if err := attestationutil.VerifyIndexedAttestationSig(ctx, indexedAtt, pubkeys, domain); err != nil {
+			return nil, err
+		}
+		s.forkChoiceStore.ProcessAttestation(ctx, indexedAtt.AttestingIndices, bytesutil.ToBytes32(a.Data.BeaconBlockRoot), a.Data.Target.Epoch)
+
+		return indexedAtt.AttestingIndices, nil
+	}
+
 	// Retrieve attestation's data beacon block pre state. Advance pre state to latest epoch if necessary and
 	// save it to the cache.
 	baseState, err := s.getAttPreState(ctx, tgt)
@@ -73,10 +123,10 @@ func (s *Service) onAttestation(ctx context.Context, a *ethpb.Attestation) ([]ui
 		return nil, err
 	}
 
-	genesisTime := helpers.GenesisTime(baseState)
+	genesisTime := baseState.GenesisTime()
 
 	// Verify attestation target is from current epoch or previous epoch.
-	if err := s.verifyAttTargetEpoch(ctx, genesisTime, uint64(roughtime.Now().Unix()), tgt); err != nil {
+	if err := s.verifyAttTargetEpoch(ctx, genesisTime, uint64(timeutils.Now().Unix()), tgt); err != nil {
 		return nil, err
 	}
 

beacon-chain/blockchain/process_attestation_helpers.go

@@ -11,6 +11,7 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/state"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
+	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/attestationutil"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
@@ -31,14 +32,18 @@ func (s *Service) getAttPreState(ctx context.Context, c *ethpb.Checkpoint) (*sta
 
 	baseState, err := s.stateGen.StateByRoot(ctx, bytesutil.ToBytes32(c.Root))
 	if err != nil {
-		return nil, errors.Wrapf(err, "could not get pre state for slot %d", helpers.StartSlot(c.Epoch))
+		return nil, errors.Wrapf(err, "could not get pre state for epoch %d", c.Epoch)
 	}
 
-	if helpers.StartSlot(c.Epoch) > baseState.Slot() {
+	epochStartSlot, err := helpers.StartSlot(c.Epoch)
+	if err != nil {
+		return nil, err
+	}
+	if epochStartSlot > baseState.Slot() {
 		baseState = baseState.Copy()
-		baseState, err = state.ProcessSlots(ctx, baseState, helpers.StartSlot(c.Epoch))
+		baseState, err = state.ProcessSlots(ctx, baseState, epochStartSlot)
 		if err != nil {
-			return nil, errors.Wrapf(err, "could not process slots up to %d", helpers.StartSlot(c.Epoch))
+			return nil, errors.Wrapf(err, "could not process slots up to epoch %d", c.Epoch)
 		}
 		if err := s.checkpointState.AddCheckpointState(c, baseState); err != nil {
 			return nil, errors.Wrap(err, "could not saved checkpoint state to cache")
@@ -59,6 +64,67 @@ func (s *Service) getAttPreState(ctx context.Context, c *ethpb.Checkpoint) (*sta
 
 }
 
+// getAttCheckPtInfo retrieves the check point info given a check point. Check point info enables the node
+// to efficiently verify attestation signature without using beacon state. This function utilizes
+// the checkpoint info cache and will update the check point info cache on miss.
+func (s *Service) getAttCheckPtInfo(ctx context.Context, c *ethpb.Checkpoint, e uint64) (*pb.CheckPtInfo, error) {
+	// Return checkpoint info if exists in cache.
+	info, err := s.checkPtInfoCache.get(c)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get cached checkpoint state")
+	}
+	if info != nil {
+		return info, nil
+	}
+
+	// Retrieve checkpoint state to compute checkpoint info.
+	baseState, err := s.stateGen.StateByRoot(ctx, bytesutil.ToBytes32(c.Root))
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not get pre state for epoch %d", c.Epoch)
+	}
+	epochStartSlot, err := helpers.StartSlot(c.Epoch)
+	if err != nil {
+		return nil, err
+	}
+	if epochStartSlot > baseState.Slot() {
+		baseState = baseState.Copy()
+		baseState, err = state.ProcessSlots(ctx, baseState, epochStartSlot)
+		if err != nil {
+			return nil, errors.Wrapf(err, "could not process slots up to epoch %d", c.Epoch)
+		}
+	}
+	f := baseState.Fork()
+	g := bytesutil.ToBytes32(baseState.GenesisValidatorRoot())
+	seed, err := helpers.Seed(baseState, e, params.BeaconConfig().DomainBeaconAttester)
+	if err != nil {
+		return nil, err
+	}
+	indices, err := helpers.ActiveValidatorIndices(baseState, e)
+	if err != nil {
+		return nil, err
+	}
+	validators := baseState.ValidatorsReadOnly()
+	pks := make([][]byte, len(validators))
+	for i := 0; i < len(pks); i++ {
+		pk := validators[i].PublicKey()
+		pks[i] = pk[:]
+	}
+
+	// Cache and return the checkpoint info.
+	info = &pb.CheckPtInfo{
+		Fork:          f,
+		GenesisRoot:   g[:],
+		Seed:          seed[:],
+		ActiveIndices: indices,
+		PubKeys:       pks,
+	}
+	if err := s.checkPtInfoCache.put(c, info); err != nil {
+		return nil, err
+	}
+
+	return info, nil
+}
+
 // verifyAttTargetEpoch validates attestation is from the current or previous epoch.
 func (s *Service) verifyAttTargetEpoch(ctx context.Context, genesisTime uint64, nowTime uint64, c *ethpb.Checkpoint) error {
 	currentSlot := (nowTime - genesisTime) / params.BeaconConfig().SecondsPerSlot
@@ -97,7 +163,10 @@ func (s *Service) verifyBeaconBlock(ctx context.Context, data *ethpb.Attestation
 
 // verifyLMDFFGConsistent verifies LMD GHOST and FFG votes are consistent with each other.
 func (s *Service) verifyLMDFFGConsistent(ctx context.Context, ffgEpoch uint64, ffgRoot []byte, lmdRoot []byte) error {
-	ffgSlot := helpers.StartSlot(ffgEpoch)
+	ffgSlot, err := helpers.StartSlot(ffgEpoch)
+	if err != nil {
+		return err
+	}
 	r, err := s.ancestor(ctx, lmdRoot, ffgSlot)
 	if err != nil {
 		return err

beacon-chain/blockchain/process_attestation_test.go

@@ -2,20 +2,19 @@ package blockchain
 
 import (
 	"context"
-	"strings"
 	"testing"
 
 	"github.com/gogo/protobuf/proto"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	"github.com/prysmaticlabs/prysm/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/state"
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
 	"github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/protoarray"
-	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
+	"github.com/prysmaticlabs/prysm/shared/featureconfig"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
@@ -37,103 +36,207 @@ func TestStore_OnAttestation(t *testing.T) {
 	_, err = blockTree1(db, []byte{'g'})
 	require.NoError(t, err)
 
-	BlkWithOutState := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 0}}
+	BlkWithOutState := testutil.NewBeaconBlock()
+	BlkWithOutState.Block.Slot = 0
 	require.NoError(t, db.SaveBlock(ctx, BlkWithOutState))
-	BlkWithOutStateRoot, err := stateutil.BlockRoot(BlkWithOutState.Block)
+	BlkWithOutStateRoot, err := BlkWithOutState.Block.HashTreeRoot()
 	require.NoError(t, err)
 
-	BlkWithStateBadAtt := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 1}}
+	BlkWithStateBadAtt := testutil.NewBeaconBlock()
+	BlkWithStateBadAtt.Block.Slot = 1
 	require.NoError(t, db.SaveBlock(ctx, BlkWithStateBadAtt))
-	BlkWithStateBadAttRoot, err := stateutil.BlockRoot(BlkWithStateBadAtt.Block)
+	BlkWithStateBadAttRoot, err := BlkWithStateBadAtt.Block.HashTreeRoot()
 	require.NoError(t, err)
 
 	s := testutil.NewBeaconState()
 	require.NoError(t, s.SetSlot(100*params.BeaconConfig().SlotsPerEpoch))
 	require.NoError(t, service.beaconDB.SaveState(ctx, s, BlkWithStateBadAttRoot))
 
-	BlkWithValidState := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 2}}
+	BlkWithValidState := testutil.NewBeaconBlock()
+	BlkWithValidState.Block.Slot = 2
 	require.NoError(t, db.SaveBlock(ctx, BlkWithValidState))
 
-	BlkWithValidStateRoot, err := stateutil.BlockRoot(BlkWithValidState.Block)
+	BlkWithValidStateRoot, err := BlkWithValidState.Block.HashTreeRoot()
 	require.NoError(t, err)
 	s = testutil.NewBeaconState()
-	if err := s.SetFork(&pb.Fork{
+	err = s.SetFork(&pb.Fork{
 		Epoch:           0,
 		CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
 		PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-	}); err != nil {
-		t.Fatal(err)
-	}
+	})
+	require.NoError(t, err)
 	require.NoError(t, service.beaconDB.SaveState(ctx, s, BlkWithValidStateRoot))
 
 	tests := []struct {
-		name          string
-		a             *ethpb.Attestation
-		s             *pb.BeaconState
-		wantErr       bool
-		wantErrString string
+		name      string
+		a         *ethpb.Attestation
+		wantedErr string
 	}{
 		{
-			name:          "attestation's data slot not aligned with target vote",
-			a:             &ethpb.Attestation{Data: &ethpb.AttestationData{Slot: params.BeaconConfig().SlotsPerEpoch, Target: &ethpb.Checkpoint{}}},
-			s:             &pb.BeaconState{},
-			wantErr:       true,
-			wantErrString: "data slot is not in the same epoch as target 1 != 0",
+			name:      "attestation's data slot not aligned with target vote",
+			a:         &ethpb.Attestation{Data: &ethpb.AttestationData{Slot: params.BeaconConfig().SlotsPerEpoch, Target: &ethpb.Checkpoint{Root: make([]byte, 32)}}},
+			wantedErr: "data slot is not in the same epoch as target 1 != 0",
 		},
 		{
-			name:          "attestation's target root not in db",
-			a:             &ethpb.Attestation{Data: &ethpb.AttestationData{Target: &ethpb.Checkpoint{Root: []byte{'A'}}}},
-			s:             &pb.BeaconState{},
-			wantErr:       true,
-			wantErrString: "target root does not exist in db",
+			name:      "attestation's target root not in db",
+			a:         &ethpb.Attestation{Data: &ethpb.AttestationData{Target: &ethpb.Checkpoint{Root: bytesutil.PadTo([]byte{'A'}, 32)}}},
+			wantedErr: "target root does not exist in db",
 		},
 		{
-			name:          "no pre state for attestations's target block",
-			a:             &ethpb.Attestation{Data: &ethpb.AttestationData{Target: &ethpb.Checkpoint{Root: BlkWithOutStateRoot[:]}}},
-			s:             &pb.BeaconState{},
-			wantErr:       true,
-			wantErrString: "could not get pre state for slot 0",
+			name:      "no pre state for attestations's target block",
+			a:         &ethpb.Attestation{Data: &ethpb.AttestationData{Target: &ethpb.Checkpoint{Root: BlkWithOutStateRoot[:]}}},
+			wantedErr: "could not get pre state for epoch 0",
 		},
 		{
 			name: "process attestation doesn't match current epoch",
 			a: &ethpb.Attestation{Data: &ethpb.AttestationData{Slot: 100 * params.BeaconConfig().SlotsPerEpoch, Target: &ethpb.Checkpoint{Epoch: 100,
 				Root: BlkWithStateBadAttRoot[:]}}},
-			s:             &pb.BeaconState{Slot: 100 * params.BeaconConfig().SlotsPerEpoch},
-			wantErr:       true,
-			wantErrString: "target epoch 100 does not match current epoch",
+			wantedErr: "target epoch 100 does not match current epoch",
 		},
 		{
-			name:          "process nil field (a.Target) in attestation",
-			a:             nil,
-			s:             &pb.BeaconState{},
-			wantErr:       true,
-			wantErrString: "nil attestation",
+			name:      "process nil attestation",
+			a:         nil,
+			wantedErr: "nil attestation",
 		},
 		{
-			name:          "process nil field (a.Data) in attestation",
-			a:             &ethpb.Attestation{},
-			s:             &pb.BeaconState{},
-			wantErr:       true,
-			wantErrString: "nil attestation.Data field",
+			name:      "process nil field (a.Data) in attestation",
+			a:         &ethpb.Attestation{},
+			wantedErr: "nil attestation.Data field",
 		},
 		{
-			name:          "process nil field (a.Target) in attestation",
-			a:             &ethpb.Attestation{Data: &ethpb.AttestationData{}},
-			s:             &pb.BeaconState{},
-			wantErr:       true,
-			wantErrString: "nil attestation.Data.Target field",
+			name: "process nil field (a.Target) in attestation",
+			a: &ethpb.Attestation{
+				Data: &ethpb.AttestationData{
+					BeaconBlockRoot: make([]byte, 32),
+					Target:          nil,
+					Source:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+				},
+				AggregationBits: make([]byte, 1),
+				Signature:       make([]byte, 96),
+			},
+			wantedErr: "nil attestation.Data.Target field",
 		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			_, err := service.onAttestation(ctx, tt.a)
-			if tt.wantErr {
-				if err == nil || !strings.Contains(err.Error(), tt.wantErrString) {
-					t.Errorf("Store.onAttestation() error = %v, wantErr = %v", err, tt.wantErrString)
-				}
+			if tt.wantedErr != "" {
+				assert.ErrorContains(t, tt.wantedErr, err)
 			} else {
-				t.Error(err)
+				assert.NoError(t, err)
+			}
+		})
+	}
+}
+
+func TestStore_OnAttestationUsingCheckptCache(t *testing.T) {
+	resetCfg := featureconfig.InitWithReset(&featureconfig.Flags{UseCheckPointInfoCache: true})
+	defer resetCfg()
+
+	ctx := context.Background()
+	db, sc := testDB.SetupDB(t)
+
+	cfg := &Config{
+		BeaconDB:        db,
+		ForkChoiceStore: protoarray.New(0, 0, [32]byte{}),
+		StateGen:        stategen.New(db, sc),
+	}
+	service, err := NewService(ctx, cfg)
+	require.NoError(t, err)
+
+	_, err = blockTree1(db, []byte{'g'})
+	require.NoError(t, err)
+
+	BlkWithOutState := testutil.NewBeaconBlock()
+	BlkWithOutState.Block.Slot = 0
+	require.NoError(t, db.SaveBlock(ctx, BlkWithOutState))
+	BlkWithOutStateRoot, err := BlkWithOutState.Block.HashTreeRoot()
+	require.NoError(t, err)
+
+	BlkWithStateBadAtt := testutil.NewBeaconBlock()
+	BlkWithStateBadAtt.Block.Slot = 1
+	require.NoError(t, db.SaveBlock(ctx, BlkWithStateBadAtt))
+	BlkWithStateBadAttRoot, err := BlkWithStateBadAtt.Block.HashTreeRoot()
+	require.NoError(t, err)
+
+	s := testutil.NewBeaconState()
+	require.NoError(t, s.SetSlot(100*params.BeaconConfig().SlotsPerEpoch))
+	require.NoError(t, service.beaconDB.SaveState(ctx, s, BlkWithStateBadAttRoot))
+
+	BlkWithValidState := testutil.NewBeaconBlock()
+	BlkWithValidState.Block.Slot = 2
+	require.NoError(t, db.SaveBlock(ctx, BlkWithValidState))
+
+	BlkWithValidStateRoot, err := BlkWithValidState.Block.HashTreeRoot()
+	require.NoError(t, err)
+	s = testutil.NewBeaconState()
+	err = s.SetFork(&pb.Fork{
+		Epoch:           0,
+		CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
+		PreviousVersion: params.BeaconConfig().GenesisForkVersion,
+	})
+	require.NoError(t, err)
+	require.NoError(t, service.beaconDB.SaveState(ctx, s, BlkWithValidStateRoot))
+
+	tests := []struct {
+		name      string
+		a         *ethpb.Attestation
+		wantedErr string
+	}{
+		{
+			name:      "attestation's data slot not aligned with target vote",
+			a:         &ethpb.Attestation{Data: &ethpb.AttestationData{Slot: params.BeaconConfig().SlotsPerEpoch, Target: &ethpb.Checkpoint{Root: make([]byte, 32)}}},
+			wantedErr: "data slot is not in the same epoch as target 1 != 0",
+		},
+		{
+			name:      "attestation's target root not in db",
+			a:         &ethpb.Attestation{Data: &ethpb.AttestationData{Target: &ethpb.Checkpoint{Root: bytesutil.PadTo([]byte{'A'}, 32)}}},
+			wantedErr: "target root does not exist in db",
+		},
+		{
+			name:      "no pre state for attestations's target block",
+			a:         &ethpb.Attestation{Data: &ethpb.AttestationData{Target: &ethpb.Checkpoint{Root: BlkWithOutStateRoot[:]}}},
+			wantedErr: "could not get pre state for epoch 0",
+		},
+		{
+			name: "process attestation doesn't match current epoch",
+			a: &ethpb.Attestation{Data: &ethpb.AttestationData{Slot: 100 * params.BeaconConfig().SlotsPerEpoch, Target: &ethpb.Checkpoint{Epoch: 100,
+				Root: BlkWithStateBadAttRoot[:]}}},
+			wantedErr: "target epoch 100 does not match current epoch",
+		},
+		{
+			name:      "process nil attestation",
+			a:         nil,
+			wantedErr: "nil attestation",
+		},
+		{
+			name:      "process nil field (a.Data) in attestation",
+			a:         &ethpb.Attestation{},
+			wantedErr: "nil attestation.Data field",
+		},
+		{
+			name: "process nil field (a.Target) in attestation",
+			a: &ethpb.Attestation{
+				Data: &ethpb.AttestationData{
+					BeaconBlockRoot: make([]byte, 32),
+					Target:          nil,
+					Source:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+				},
+				AggregationBits: make([]byte, 1),
+				Signature:       make([]byte, 96),
+			},
+			wantedErr: "nil attestation.Data.Target field",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_, err := service.onAttestation(ctx, tt.a)
+			if tt.wantedErr != "" {
+				assert.ErrorContains(t, tt.wantedErr, err)
+			} else {
+				assert.NoError(t, err)
 			}
 		})
 	}
@@ -150,22 +253,16 @@ func TestStore_SaveCheckpointState(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	s, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Fork: &pb.Fork{
-			Epoch:           0,
-			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-		},
-		RandaoMixes:         make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-		StateRoots:          make([][]byte, params.BeaconConfig().SlotsPerHistoricalRoot),
-		BlockRoots:          make([][]byte, params.BeaconConfig().SlotsPerHistoricalRoot),
-		LatestBlockHeader:   &ethpb.BeaconBlockHeader{},
-		JustificationBits:   []byte{0},
-		Slashings:           make([]uint64, params.BeaconConfig().EpochsPerSlashingsVector),
-		FinalizedCheckpoint: &ethpb.Checkpoint{Root: bytesutil.PadTo([]byte{'A'}, 32)},
-		Validators:          []*ethpb.Validator{{PublicKey: bytesutil.PadTo([]byte("foo"), 48)}},
-		Balances:            []uint64{0},
-	})
+	s := testutil.NewBeaconState()
+	err = s.SetFinalizedCheckpoint(&ethpb.Checkpoint{Root: bytesutil.PadTo([]byte{'A'}, 32)})
+	require.NoError(t, err)
+	val := &ethpb.Validator{
+		PublicKey:             bytesutil.PadTo([]byte("foo"), 48),
+		WithdrawalCredentials: bytesutil.PadTo([]byte("bar"), 32),
+	}
+	err = s.SetValidators([]*ethpb.Validator{val})
+	require.NoError(t, err)
+	err = s.SetBalances([]uint64{0})
 	require.NoError(t, err)
 	r := [32]byte{'g'}
 	require.NoError(t, service.beaconDB.SaveState(ctx, s, r))
@@ -229,23 +326,24 @@ func TestStore_UpdateCheckpointState(t *testing.T) {
 
 	epoch := uint64(1)
 	baseState, _ := testutil.DeterministicGenesisState(t, 1)
-	require.NoError(t, baseState.SetSlot(epoch*params.BeaconConfig().SlotsPerEpoch))
-	checkpoint := &ethpb.Checkpoint{Epoch: epoch}
+	checkpoint := &ethpb.Checkpoint{Epoch: epoch, Root: bytesutil.PadTo([]byte("hi"), 32)}
 	require.NoError(t, service.beaconDB.SaveState(ctx, baseState, bytesutil.ToBytes32(checkpoint.Root)))
 	returned, err := service.getAttPreState(ctx, checkpoint)
 	require.NoError(t, err)
-	assert.Equal(t, returned.Slot(), baseState.Slot(), "Incorrectly returned base state")
+	assert.Equal(t, returned.Slot(), checkpoint.Epoch*params.BeaconConfig().SlotsPerEpoch, "Incorrectly returned base state")
 
 	cached, err := service.checkpointState.StateByCheckpoint(checkpoint)
 	require.NoError(t, err)
-	assert.NotNil(t, cached, "State should have been cached")
+	assert.Equal(t, returned.Slot(), cached.Slot(), "State should have been cached")
 
 	epoch = uint64(2)
-	newCheckpoint := &ethpb.Checkpoint{Epoch: epoch}
+	newCheckpoint := &ethpb.Checkpoint{Epoch: epoch, Root: bytesutil.PadTo([]byte("bye"), 32)}
 	require.NoError(t, service.beaconDB.SaveState(ctx, baseState, bytesutil.ToBytes32(newCheckpoint.Root)))
 	returned, err = service.getAttPreState(ctx, newCheckpoint)
 	require.NoError(t, err)
-	baseState, err = state.ProcessSlots(ctx, baseState, helpers.StartSlot(newCheckpoint.Epoch))
+	s, err := helpers.StartSlot(newCheckpoint.Epoch)
+	require.NoError(t, err)
+	baseState, err = state.ProcessSlots(ctx, baseState, s)
 	require.NoError(t, err)
 	assert.Equal(t, returned.Slot(), baseState.Slot(), "Incorrectly returned base state")
 
@@ -264,13 +362,8 @@ func TestAttEpoch_MatchPrevEpoch(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	if err := service.verifyAttTargetEpoch(
-		ctx,
-		0,
-		params.BeaconConfig().SlotsPerEpoch*params.BeaconConfig().SecondsPerSlot,
-		&ethpb.Checkpoint{}); err != nil {
-		t.Error(err)
-	}
+	nowTime := params.BeaconConfig().SlotsPerEpoch * params.BeaconConfig().SecondsPerSlot
+	require.NoError(t, service.verifyAttTargetEpoch(ctx, 0, nowTime, &ethpb.Checkpoint{Root: make([]byte, 32)}))
 }
 
 func TestAttEpoch_MatchCurrentEpoch(t *testing.T) {
@@ -281,13 +374,8 @@ func TestAttEpoch_MatchCurrentEpoch(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	if err := service.verifyAttTargetEpoch(
-		ctx,
-		0,
-		params.BeaconConfig().SlotsPerEpoch*params.BeaconConfig().SecondsPerSlot,
-		&ethpb.Checkpoint{Epoch: 1}); err != nil {
-		t.Error(err)
-	}
+	nowTime := params.BeaconConfig().SlotsPerEpoch * params.BeaconConfig().SecondsPerSlot
+	require.NoError(t, service.verifyAttTargetEpoch(ctx, 0, nowTime, &ethpb.Checkpoint{Epoch: 1}))
 }
 
 func TestAttEpoch_NotMatch(t *testing.T) {
@@ -298,14 +386,9 @@ func TestAttEpoch_NotMatch(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	if err := service.verifyAttTargetEpoch(
-		ctx,
-		0,
-		2*params.BeaconConfig().SlotsPerEpoch*params.BeaconConfig().SecondsPerSlot,
-		&ethpb.Checkpoint{}); !strings.Contains(err.Error(),
-		"target epoch 0 does not match current epoch 2 or prev epoch 1") {
-		t.Error("Did not receive wanted error")
-	}
+	nowTime := 2 * params.BeaconConfig().SlotsPerEpoch * params.BeaconConfig().SecondsPerSlot
+	err = service.verifyAttTargetEpoch(ctx, 0, nowTime, &ethpb.Checkpoint{Root: make([]byte, 32)})
+	assert.ErrorContains(t, "target epoch 0 does not match current epoch 2 or prev epoch 1", err)
 }
 
 func TestVerifyBeaconBlock_NoBlock(t *testing.T) {
@@ -316,8 +399,12 @@ func TestVerifyBeaconBlock_NoBlock(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	d := &ethpb.AttestationData{}
-	assert.ErrorContains(t, "beacon block  does not exist", service.verifyBeaconBlock(ctx, d))
+	d := &ethpb.AttestationData{
+		BeaconBlockRoot: make([]byte, 32),
+		Target:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+		Source:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+	}
+	assert.ErrorContains(t, "beacon block 0x000000000000 does not exist", service.verifyBeaconBlock(ctx, d))
 }
 
 func TestVerifyBeaconBlock_futureBlock(t *testing.T) {
@@ -328,9 +415,10 @@ func TestVerifyBeaconBlock_futureBlock(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	b := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 2}}
+	b := testutil.NewBeaconBlock()
+	b.Block.Slot = 2
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, b))
-	r, err := stateutil.BlockRoot(b.Block)
+	r, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
 	d := &ethpb.AttestationData{Slot: 1, BeaconBlockRoot: r[:]}
 
@@ -345,9 +433,10 @@ func TestVerifyBeaconBlock_OK(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	b := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 2}}
+	b := testutil.NewBeaconBlock()
+	b.Block.Slot = 2
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, b))
-	r, err := stateutil.BlockRoot(b.Block)
+	r, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
 	d := &ethpb.AttestationData{Slot: 2, BeaconBlockRoot: r[:]}
 
@@ -362,13 +451,16 @@ func TestVerifyLMDFFGConsistent_NotOK(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	b32 := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 32}}
+	b32 := testutil.NewBeaconBlock()
+	b32.Block.Slot = 32
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, b32))
-	r32, err := stateutil.BlockRoot(b32.Block)
+	r32, err := b32.Block.HashTreeRoot()
 	require.NoError(t, err)
-	b33 := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 33, ParentRoot: r32[:]}}
+	b33 := testutil.NewBeaconBlock()
+	b33.Block.Slot = 33
+	b33.Block.ParentRoot = r32[:]
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, b33))
-	r33, err := stateutil.BlockRoot(b33.Block)
+	r33, err := b33.Block.HashTreeRoot()
 	require.NoError(t, err)
 
 	wanted := "FFG and LMD votes are not consistent"
@@ -383,15 +475,62 @@ func TestVerifyLMDFFGConsistent_OK(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	b32 := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 32}}
+	b32 := testutil.NewBeaconBlock()
+	b32.Block.Slot = 32
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, b32))
-	r32, err := stateutil.BlockRoot(b32.Block)
+	r32, err := b32.Block.HashTreeRoot()
 	require.NoError(t, err)
-	b33 := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 33, ParentRoot: r32[:]}}
+	b33 := testutil.NewBeaconBlock()
+	b33.Block.Slot = 33
+	b33.Block.ParentRoot = r32[:]
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, b33))
-	r33, err := stateutil.BlockRoot(b33.Block)
+	r33, err := b33.Block.HashTreeRoot()
 	require.NoError(t, err)
 
 	err = service.verifyLMDFFGConsistent(context.Background(), 1, r32[:], r33[:])
 	assert.NoError(t, err, "Could not verify LMD and FFG votes to be consistent")
 }
+
+func TestGetAttCheckptInfo(t *testing.T) {
+	ctx := context.Background()
+	db, _ := testDB.SetupDB(t)
+	cfg := &Config{BeaconDB: db, StateGen: stategen.New(db, cache.NewStateSummaryCache())}
+	service, err := NewService(ctx, cfg)
+	require.NoError(t, err)
+
+	baseState, _ := testutil.DeterministicGenesisState(t, 128)
+	b := testutil.NewBeaconBlock()
+	r, err := b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, service.beaconDB.SaveState(ctx, baseState, r))
+	require.NoError(t, service.beaconDB.SaveBlock(ctx, b))
+	require.NoError(t, service.beaconDB.SaveGenesisBlockRoot(ctx, r))
+	checkpoint := &ethpb.Checkpoint{Root: r[:]}
+
+	returned, err := service.getAttCheckPtInfo(ctx, checkpoint, 0)
+	require.NoError(t, err)
+
+	seed, err := helpers.Seed(baseState, 0, params.BeaconConfig().DomainBeaconAttester)
+	require.NoError(t, err)
+	indices, err := helpers.ActiveValidatorIndices(baseState, 0)
+	require.NoError(t, err)
+	validators := baseState.ValidatorsReadOnly()
+	pks := make([][]byte, len(validators))
+	for i := 0; i < len(pks); i++ {
+		pk := validators[i].PublicKey()
+		pks[i] = pk[:]
+	}
+
+	wanted := &pb.CheckPtInfo{
+		Fork:          baseState.Fork(),
+		GenesisRoot:   baseState.GenesisValidatorRoot(),
+		Seed:          seed[:],
+		ActiveIndices: indices,
+		PubKeys:       pks,
+	}
+	require.DeepEqual(t, wanted, returned)
+
+	cached, err := service.checkPtInfoCache.get(checkpoint)
+	require.NoError(t, err)
+	require.DeepEqual(t, wanted, cached)
+}

beacon-chain/blockchain/process_block.go

@@ -121,7 +121,11 @@ func (s *Service) onBlock(ctx context.Context, signed *ethpb.SignedBeaconBlock,
 		}
 
 		// Update deposit cache.
-		s.depositCache.InsertFinalizedDeposits(ctx, int64(postState.Eth1DepositIndex()))
+		finalizedState, err := s.stateGen.StateByRoot(ctx, fRoot)
+		if err != nil {
+			return errors.Wrap(err, "could not fetch finalized state")
+		}
+		s.depositCache.InsertFinalizedDeposits(ctx, int64(finalizedState.Eth1Data().DepositCount-1))
 	}
 
 	defer reportAttestationInclusion(b)
@@ -231,11 +235,11 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []*ethpb.SignedBeaconBl
 	jCheckpoints := make([]*ethpb.Checkpoint, len(blks))
 	fCheckpoints := make([]*ethpb.Checkpoint, len(blks))
 	sigSet := &bls.SignatureSet{
-		Signatures: []bls.Signature{},
+		Signatures: [][]byte{},
 		PublicKeys: []bls.PublicKey{},
 		Messages:   [][32]byte{},
 	}
-	set := new(bls.SignatureSet)
+	var set *bls.SignatureSet
 	boundaries := make(map[[32]byte]*stateTrie.BeaconState)
 	for i, b := range blks {
 		set, preState, err = state.ExecuteStateTransitionNoVerifyAnySig(ctx, preState, b)
@@ -246,14 +250,14 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []*ethpb.SignedBeaconBl
 		if helpers.IsEpochStart(preState.Slot()) {
 			boundaries[blockRoots[i]] = preState.Copy()
 			if err := s.handleEpochBoundary(preState); err != nil {
-				return nil, nil, fmt.Errorf("could not handle epoch boundary state")
+				return nil, nil, errors.Wrap(err, "could not handle epoch boundary state")
 			}
 		}
 		jCheckpoints[i] = preState.CurrentJustifiedCheckpoint()
 		fCheckpoints[i] = preState.FinalizedCheckpoint()
 		sigSet.Join(set)
 	}
-	verify, err := bls.VerifyMultipleSignatures(sigSet.Signatures, sigSet.Messages, sigSet.PublicKeys)
+	verify, err := sigSet.Verify()
 	if err != nil {
 		return nil, nil, err
 	}
@@ -316,8 +320,11 @@ func (s *Service) handleBlockAfterBatchVerify(ctx context.Context, signed *ethpb
 func (s *Service) handleEpochBoundary(postState *stateTrie.BeaconState) error {
 	if postState.Slot() >= s.nextEpochBoundarySlot {
 		reportEpochMetrics(postState)
-		s.nextEpochBoundarySlot = helpers.StartSlot(helpers.NextEpoch(postState))
-
+		var err error
+		s.nextEpochBoundarySlot, err = helpers.StartSlot(helpers.NextEpoch(postState))
+		if err != nil {
+			return err
+		}
 		// Update committees cache at epoch boundary slot.
 		if err := helpers.UpdateCommitteeCache(postState, helpers.CurrentEpoch(postState)); err != nil {
 			return err

beacon-chain/blockchain/process_block_helpers.go

@@ -9,23 +9,16 @@ import (
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	"github.com/prysmaticlabs/prysm/shared/attestationutil"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
-	"github.com/prysmaticlabs/prysm/shared/roughtime"
 	"github.com/prysmaticlabs/prysm/shared/traceutil"
 	"go.opencensus.io/trace"
 )
 
 // CurrentSlot returns the current slot based on time.
 func (s *Service) CurrentSlot() uint64 {
-	now := roughtime.Now().Unix()
-	genesis := s.genesisTime.Unix()
-	if now < genesis {
-		return 0
-	}
-	return uint64(now-genesis) / params.BeaconConfig().SecondsPerSlot
+	return helpers.CurrentSlot(uint64(s.genesisTime.Unix()))
 }
 
 // getBlockPreState returns the pre state of an incoming block. It uses the parent root of the block
@@ -49,12 +42,7 @@ func (s *Service) getBlockPreState(ctx context.Context, b *ethpb.BeaconBlock) (*
 	}
 
 	// Verify block slot time is not from the future.
-	if err := helpers.VerifySlotTime(helpers.GenesisTime(preState), b.Slot, params.BeaconNetworkConfig().MaximumGossipClockDisparity); err != nil {
-		return nil, err
-	}
-
-	// Verify block is a descendent of a finalized block.
-	if err := s.VerifyBlkDescendant(ctx, bytesutil.ToBytes32(b.ParentRoot)); err != nil {
+	if err := helpers.VerifySlotTime(preState.GenesisTime(), b.Slot, params.BeaconNetworkConfig().MaximumGossipClockDisparity); err != nil {
 		return nil, err
 	}
 
@@ -78,6 +66,11 @@ func (s *Service) verifyBlkPreState(ctx context.Context, b *ethpb.BeaconBlock) e
 	if !s.stateGen.StateSummaryExists(ctx, parentRoot) && !s.beaconDB.HasBlock(ctx, parentRoot) {
 		return errors.New("could not reconstruct parent state")
 	}
+
+	if err := s.VerifyBlkDescendant(ctx, bytesutil.ToBytes32(b.ParentRoot)); err != nil {
+		return err
+	}
+
 	has, err := s.stateGen.HasState(ctx, parentRoot)
 	if err != nil {
 		return err
@@ -126,7 +119,10 @@ func (s *Service) VerifyBlkDescendant(ctx context.Context, root [32]byte) error
 // verifyBlkFinalizedSlot validates input block is not less than or equal
 // to current finalized slot.
 func (s *Service) verifyBlkFinalizedSlot(b *ethpb.BeaconBlock) error {
-	finalizedSlot := helpers.StartSlot(s.finalizedCheckpt.Epoch)
+	finalizedSlot, err := helpers.StartSlot(s.finalizedCheckpt.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)
 	}
@@ -157,7 +153,11 @@ func (s *Service) shouldUpdateCurrentJustified(ctx context.Context, newJustified
 	}
 
 	newJustifiedBlock := newJustifiedBlockSigned.Block
-	if newJustifiedBlock.Slot <= helpers.StartSlot(s.justifiedCheckpt.Epoch) {
+	jSlot, err := helpers.StartSlot(s.justifiedCheckpt.Epoch)
+	if err != nil {
+		return false, err
+	}
+	if newJustifiedBlock.Slot <= jSlot {
 		return false, nil
 	}
 	var justifiedBlockSigned *ethpb.SignedBeaconBlock
@@ -227,6 +227,10 @@ func (s *Service) updateFinalized(ctx context.Context, cp *ethpb.Checkpoint) err
 	}
 	s.clearInitSyncBlocks()
 
+	if err := s.beaconDB.SaveFinalizedCheckpoint(ctx, cp); err != nil {
+		return err
+	}
+
 	s.prevFinalizedCheckpt = s.finalizedCheckpt
 	s.finalizedCheckpt = cp
 
@@ -235,9 +239,7 @@ func (s *Service) updateFinalized(ctx context.Context, cp *ethpb.Checkpoint) err
 		return errors.Wrap(err, "could not migrate to cold")
 	}
 
-	s.attPool.ClearSeenAtts()
-
-	return s.beaconDB.SaveFinalizedCheckpoint(ctx, cp)
+	return nil
 }
 
 // ancestor returns the block root of an ancestry block from the input block root.
@@ -256,16 +258,35 @@ func (s *Service) ancestor(ctx context.Context, root []byte, slot uint64) ([]byt
 	ctx, span := trace.StartSpan(ctx, "forkChoice.ancestor")
 	defer span.End()
 
-	// Stop recursive ancestry lookup if context is cancelled.
-	if ctx.Err() != nil {
-		return nil, ctx.Err()
-	}
-
 	r := bytesutil.ToBytes32(root)
 	// Get ancestor root from fork choice store instead of recursively looking up blocks in DB.
 	// This is most optimal outcome.
-	if s.forkChoiceStore.HasParent(r) {
-		return s.forkChoiceStore.AncestorRoot(ctx, r, slot)
+	ar, err := s.ancestorByForkChoiceStore(ctx, r, slot)
+	if err != nil {
+		// Try getting ancestor root from DB when failed to retrieve from fork choice store.
+		// This is the second line of defense for retrieving ancestor root.
+		ar, err = s.ancestorByDB(ctx, r, slot)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return ar, nil
+}
+
+// This retrieves an ancestor root using fork choice store. The look up is looping through the a flat array structure.
+func (s *Service) ancestorByForkChoiceStore(ctx context.Context, r [32]byte, slot uint64) ([]byte, error) {
+	if !s.forkChoiceStore.HasParent(r) {
+		return nil, errors.New("could not find root in fork choice store")
+	}
+	return s.forkChoiceStore.AncestorRoot(ctx, r, slot)
+}
+
+// This retrieves an ancestor root using DB. The look up is recursively looking up DB. Slower than `ancestorByForkChoiceStore`.
+func (s *Service) ancestorByDB(ctx context.Context, r [32]byte, slot uint64) ([]byte, error) {
+	// Stop recursive ancestry lookup if context is cancelled.
+	if ctx.Err() != nil {
+		return nil, ctx.Err()
 	}
 
 	signed, err := s.beaconDB.Block(ctx, r)
@@ -282,10 +303,10 @@ func (s *Service) ancestor(ctx context.Context, root []byte, slot uint64) ([]byt
 	}
 	b := signed.Block
 	if b.Slot == slot || b.Slot < slot {
-		return root, nil
+		return r[:], nil
 	}
 
-	return s.ancestor(ctx, b.ParentRoot, slot)
+	return s.ancestorByDB(ctx, bytesutil.ToBytes32(b.ParentRoot), slot)
 }
 
 // This updates justified check point in store, if the new justified is later than stored justified or
@@ -308,14 +329,14 @@ func (s *Service) finalizedImpliesNewJustified(ctx context.Context, state *state
 	if !attestationutil.CheckPointIsEqual(s.justifiedCheckpt, state.CurrentJustifiedCheckpoint()) {
 		if state.CurrentJustifiedCheckpoint().Epoch > s.justifiedCheckpt.Epoch {
 			s.justifiedCheckpt = state.CurrentJustifiedCheckpoint()
-			if err := s.cacheJustifiedStateBalances(ctx, bytesutil.ToBytes32(s.justifiedCheckpt.Root)); err != nil {
-				return err
-			}
-			return nil
+			return s.cacheJustifiedStateBalances(ctx, bytesutil.ToBytes32(s.justifiedCheckpt.Root))
 		}
 
 		// Update justified if store justified is not in chain with finalized check point.
-		finalizedSlot := helpers.StartSlot(s.finalizedCheckpt.Epoch)
+		finalizedSlot, err := helpers.StartSlot(s.finalizedCheckpt.Epoch)
+		if err != nil {
+			return err
+		}
 		justifiedRoot := s.ensureRootNotZeros(bytesutil.ToBytes32(s.justifiedCheckpt.Root))
 		anc, err := s.ancestor(ctx, justifiedRoot[:], finalizedSlot)
 		if err != nil {
@@ -340,7 +361,11 @@ func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, blk *ethpb.
 	parentRoot := bytesutil.ToBytes32(blk.ParentRoot)
 	slot := blk.Slot
 	// Fork choice only matters from last finalized slot.
-	higherThanFinalized := slot > helpers.StartSlot(s.finalizedCheckpt.Epoch)
+	fSlot, err := helpers.StartSlot(s.finalizedCheckpt.Epoch)
+	if err != nil {
+		return err
+	}
+	higherThanFinalized := slot > fSlot
 	// As long as parent node is not in fork choice store, and parent node is in DB.
 	for !s.forkChoiceStore.HasNode(parentRoot) && s.beaconDB.HasBlock(ctx, parentRoot) && higherThanFinalized {
 		b, err := s.beaconDB.Block(ctx, parentRoot)
@@ -351,14 +376,14 @@ func (s *Service) fillInForkChoiceMissingBlocks(ctx context.Context, blk *ethpb.
 		pendingNodes = append(pendingNodes, b.Block)
 		parentRoot = bytesutil.ToBytes32(b.Block.ParentRoot)
 		slot = b.Block.Slot
-		higherThanFinalized = slot > helpers.StartSlot(s.finalizedCheckpt.Epoch)
+		higherThanFinalized = slot > fSlot
 	}
 
 	// Insert parent nodes to fork choice store in reverse order.
 	// Lower slots should be at the end of the list.
 	for i := len(pendingNodes) - 1; i >= 0; i-- {
 		b := pendingNodes[i]
-		r, err := stateutil.BlockRoot(b)
+		r, err := b.HashTreeRoot()
 		if err != nil {
 			return err
 		}

beacon-chain/blockchain/process_block_test.go

@@ -2,12 +2,11 @@ package blockchain
 
 import (
 	"context"
-	"strings"
 	"testing"
 	"time"
 
+	"github.com/pkg/errors"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/state"
@@ -16,16 +15,14 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/protoarray"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/attestationutil"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
-	"github.com/prysmaticlabs/prysm/shared/featureconfig"
 	"github.com/prysmaticlabs/prysm/shared/params"
-	"github.com/prysmaticlabs/prysm/shared/roughtime"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
+	"github.com/prysmaticlabs/prysm/shared/timeutils"
 )
 
 func TestStore_OnBlock(t *testing.T) {
@@ -42,50 +39,66 @@ func TestStore_OnBlock(t *testing.T) {
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
 	assert.NoError(t, db.SaveBlock(ctx, genesis))
-	validGenesisRoot, err := stateutil.BlockRoot(genesis.Block)
+	validGenesisRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
 	st := testutil.NewBeaconState()
 	require.NoError(t, service.beaconDB.SaveState(ctx, st.Copy(), validGenesisRoot))
 	roots, err := blockTree1(db, validGenesisRoot[:])
 	require.NoError(t, err)
-	random := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 1, ParentRoot: validGenesisRoot[:]}}
+	random := testutil.NewBeaconBlock()
+	random.Block.Slot = 1
+	random.Block.ParentRoot = validGenesisRoot[:]
 	assert.NoError(t, db.SaveBlock(ctx, random))
-	randomParentRoot, err := stateutil.BlockRoot(random.Block)
+	randomParentRoot, err := random.Block.HashTreeRoot()
 	assert.NoError(t, err)
 	require.NoError(t, service.beaconDB.SaveStateSummary(ctx, &pb.StateSummary{Slot: st.Slot(), Root: randomParentRoot[:]}))
 	require.NoError(t, service.beaconDB.SaveState(ctx, st.Copy(), randomParentRoot))
 	randomParentRoot2 := roots[1]
-	require.NoError(t, service.beaconDB.SaveStateSummary(ctx, &pb.StateSummary{Slot: st.Slot(), Root: randomParentRoot2[:]}))
+	require.NoError(t, service.beaconDB.SaveStateSummary(ctx, &pb.StateSummary{Slot: st.Slot(), Root: randomParentRoot2}))
 	require.NoError(t, service.beaconDB.SaveState(ctx, st.Copy(), bytesutil.ToBytes32(randomParentRoot2)))
 
 	tests := []struct {
 		name          string
-		blk           *ethpb.BeaconBlock
+		blk           *ethpb.SignedBeaconBlock
 		s             *stateTrie.BeaconState
 		time          uint64
 		wantErrString string
 	}{
 		{
 			name:          "parent block root does not have a state",
-			blk:           &ethpb.BeaconBlock{},
+			blk:           testutil.NewBeaconBlock(),
 			s:             st.Copy(),
 			wantErrString: "could not reconstruct parent state",
 		},
 		{
-			name:          "block is from the future",
-			blk:           &ethpb.BeaconBlock{ParentRoot: randomParentRoot[:], Slot: params.BeaconConfig().FarFutureEpoch},
+			name: "block is from the future",
+			blk: func() *ethpb.SignedBeaconBlock {
+				b := testutil.NewBeaconBlock()
+				b.Block.ParentRoot = randomParentRoot2
+				b.Block.Slot = params.BeaconConfig().FarFutureEpoch
+				return b
+			}(),
 			s:             st.Copy(),
-			wantErrString: "far distant future",
+			wantErrString: "is in the far distant future",
 		},
 		{
-			name:          "could not get finalized block",
-			blk:           &ethpb.BeaconBlock{ParentRoot: randomParentRoot[:]},
+			name: "could not get finalized block",
+			blk: func() *ethpb.SignedBeaconBlock {
+				b := testutil.NewBeaconBlock()
+				b.Block.ParentRoot = randomParentRoot[:]
+				return b
+			}(),
 			s:             st.Copy(),
 			wantErrString: "is not a descendent of the current finalized block",
 		},
 		{
-			name:          "same slot as finalized block",
-			blk:           &ethpb.BeaconBlock{Slot: 0, ParentRoot: randomParentRoot2},
+			name: "same slot as finalized block",
+			blk: func() *ethpb.SignedBeaconBlock {
+				b := testutil.NewBeaconBlock()
+				b.Block.Slot = 0
+				b.Block.ParentRoot = randomParentRoot2
+				return b
+			}(),
 			s:             st.Copy(),
 			wantErrString: "block is equal or earlier than finalized block, slot 0 < slot 0",
 		},
@@ -99,9 +112,9 @@ func TestStore_OnBlock(t *testing.T) {
 			service.prevFinalizedCheckpt = &ethpb.Checkpoint{Root: validGenesisRoot[:]}
 			service.finalizedCheckpt.Root = roots[0]
 
-			root, err := stateutil.BlockRoot(tt.blk)
+			root, err := tt.blk.Block.HashTreeRoot()
 			assert.NoError(t, err)
-			err = service.onBlock(ctx, &ethpb.SignedBeaconBlock{Block: tt.blk}, root)
+			err = service.onBlock(ctx, tt.blk, root)
 			assert.ErrorContains(t, tt.wantErrString, err)
 		})
 	}
@@ -121,6 +134,13 @@ func TestStore_OnBlockBatch(t *testing.T) {
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
 	assert.NoError(t, db.SaveBlock(ctx, genesis))
+	gRoot, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err)
+	service.finalizedCheckpt = &ethpb.Checkpoint{
+		Root: gRoot[:],
+	}
+	service.forkChoiceStore = protoarray.New(0, 0, [32]byte{})
+	service.saveInitSyncBlock(gRoot, genesis)
 
 	st, keys := testutil.DeterministicGenesisState(t, 64)
 
@@ -137,11 +157,14 @@ func TestStore_OnBlockBatch(t *testing.T) {
 		if i == 1 {
 			firstState = bState.Copy()
 		}
-		root, err := stateutil.BlockRoot(b.Block)
+		root, err := b.Block.HashTreeRoot()
 		require.NoError(t, err)
+		service.saveInitSyncBlock(root, b)
 		blks = append(blks, b)
 		blkRoots = append(blkRoots, root)
 	}
+
+	blks[0].Block.ParentRoot = gRoot[:]
 	require.NoError(t, db.SaveBlock(context.Background(), blks[0]))
 	require.NoError(t, service.stateGen.SaveState(ctx, blkRoots[0], firstState))
 	_, _, err = service.onBlockBatch(ctx, blks[1:], blkRoots[1:])
@@ -159,17 +182,17 @@ func TestRemoveStateSinceLastFinalized_EmptyStartSlot(t *testing.T) {
 	require.NoError(t, err)
 	service.genesisTime = time.Now()
 
-	update, err := service.shouldUpdateCurrentJustified(ctx, &ethpb.Checkpoint{})
+	update, err := service.shouldUpdateCurrentJustified(ctx, &ethpb.Checkpoint{Root: make([]byte, 32)})
 	require.NoError(t, err)
 	assert.Equal(t, true, update, "Should be able to update justified")
 	lastJustifiedBlk := testutil.NewBeaconBlock()
 	lastJustifiedBlk.Block.ParentRoot = bytesutil.PadTo([]byte{'G'}, 32)
-	lastJustifiedRoot, err := stateutil.BlockRoot(lastJustifiedBlk.Block)
+	lastJustifiedRoot, err := lastJustifiedBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	newJustifiedBlk := testutil.NewBeaconBlock()
 	newJustifiedBlk.Block.Slot = 1
 	newJustifiedBlk.Block.ParentRoot = bytesutil.PadTo(lastJustifiedRoot[:], 32)
-	newJustifiedRoot, err := stateutil.BlockRoot(newJustifiedBlk.Block)
+	newJustifiedRoot, err := newJustifiedBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, newJustifiedBlk))
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, lastJustifiedBlk))
@@ -193,11 +216,11 @@ func TestShouldUpdateJustified_ReturnFalse(t *testing.T) {
 	require.NoError(t, err)
 	lastJustifiedBlk := testutil.NewBeaconBlock()
 	lastJustifiedBlk.Block.ParentRoot = bytesutil.PadTo([]byte{'G'}, 32)
-	lastJustifiedRoot, err := stateutil.BlockRoot(lastJustifiedBlk.Block)
+	lastJustifiedRoot, err := lastJustifiedBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	newJustifiedBlk := testutil.NewBeaconBlock()
 	newJustifiedBlk.Block.ParentRoot = bytesutil.PadTo(lastJustifiedRoot[:], 32)
-	newJustifiedRoot, err := stateutil.BlockRoot(newJustifiedBlk.Block)
+	newJustifiedRoot, err := newJustifiedBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, newJustifiedBlk))
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, lastJustifiedBlk))
@@ -212,9 +235,6 @@ func TestShouldUpdateJustified_ReturnFalse(t *testing.T) {
 }
 
 func TestCachedPreState_CanGetFromStateSummary(t *testing.T) {
-	resetCfg := featureconfig.InitWithReset(&featureconfig.Flags{NewStateMgmt: true})
-	defer resetCfg()
-
 	ctx := context.Background()
 	db, sc := testDB.SetupDB(t)
 
@@ -227,17 +247,27 @@ func TestCachedPreState_CanGetFromStateSummary(t *testing.T) {
 
 	s, err := stateTrie.InitializeFromProto(&pb.BeaconState{Slot: 1, GenesisValidatorsRoot: params.BeaconConfig().ZeroHash[:]})
 	require.NoError(t, err)
-	r := [32]byte{'A'}
-	b := &ethpb.BeaconBlock{Slot: 1, ParentRoot: r[:]}
-	require.NoError(t, service.beaconDB.SaveStateSummary(ctx, &pb.StateSummary{Slot: 1, Root: r[:]}))
-	require.NoError(t, service.stateGen.SaveState(ctx, r, s))
-	require.NoError(t, service.verifyBlkPreState(ctx, b))
+
+	genesisStateRoot := [32]byte{}
+	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
+	assert.NoError(t, db.SaveBlock(ctx, genesis))
+	gRoot, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err)
+	service.finalizedCheckpt = &ethpb.Checkpoint{
+		Root: gRoot[:],
+	}
+	service.forkChoiceStore = protoarray.New(0, 0, [32]byte{})
+	service.saveInitSyncBlock(gRoot, genesis)
+
+	b := testutil.NewBeaconBlock()
+	b.Block.Slot = 1
+	b.Block.ParentRoot = gRoot[:]
+	require.NoError(t, service.beaconDB.SaveStateSummary(ctx, &pb.StateSummary{Slot: 1, Root: gRoot[:]}))
+	require.NoError(t, service.stateGen.SaveState(ctx, gRoot, s))
+	require.NoError(t, service.verifyBlkPreState(ctx, b.Block))
 }
 
 func TestCachedPreState_CanGetFromDB(t *testing.T) {
-	resetCfg := featureconfig.InitWithReset(&featureconfig.Flags{NewStateMgmt: true})
-	defer resetCfg()
-
 	ctx := context.Background()
 	db, sc := testDB.SetupDB(t)
 
@@ -248,19 +278,30 @@ func TestCachedPreState_CanGetFromDB(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	r := [32]byte{'A'}
-	b := &ethpb.BeaconBlock{Slot: 1, ParentRoot: r[:]}
+	genesisStateRoot := [32]byte{}
+	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
+	assert.NoError(t, db.SaveBlock(ctx, genesis))
+	gRoot, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err)
+	service.finalizedCheckpt = &ethpb.Checkpoint{
+		Root: gRoot[:],
+	}
+	service.forkChoiceStore = protoarray.New(0, 0, [32]byte{})
+	service.saveInitSyncBlock(gRoot, genesis)
 
-	service.finalizedCheckpt = &ethpb.Checkpoint{Root: r[:]}
-	err = service.verifyBlkPreState(ctx, b)
+	b := testutil.NewBeaconBlock()
+	b.Block.Slot = 1
+	service.finalizedCheckpt = &ethpb.Checkpoint{Root: gRoot[:]}
+	err = service.verifyBlkPreState(ctx, b.Block)
 	wanted := "could not reconstruct parent state"
 	assert.ErrorContains(t, wanted, err)
 
+	b.Block.ParentRoot = gRoot[:]
 	s, err := stateTrie.InitializeFromProto(&pb.BeaconState{Slot: 1})
 	require.NoError(t, err)
-	require.NoError(t, service.beaconDB.SaveStateSummary(ctx, &pb.StateSummary{Slot: 1, Root: r[:]}))
-	require.NoError(t, service.stateGen.SaveState(ctx, r, s))
-	require.NoError(t, service.verifyBlkPreState(ctx, b))
+	require.NoError(t, service.beaconDB.SaveStateSummary(ctx, &pb.StateSummary{Slot: 1, Root: gRoot[:]}))
+	require.NoError(t, service.stateGen.SaveState(ctx, gRoot, s))
+	require.NoError(t, service.verifyBlkPreState(ctx, b.Block))
 }
 
 func TestUpdateJustified_CouldUpdateBest(t *testing.T) {
@@ -271,9 +312,9 @@ func TestUpdateJustified_CouldUpdateBest(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	signedBlock := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{}}
+	signedBlock := testutil.NewBeaconBlock()
 	require.NoError(t, db.SaveBlock(ctx, signedBlock))
-	r, err := stateutil.BlockRoot(signedBlock.Block)
+	r, err := signedBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
 	service.justifiedCheckpt = &ethpb.Checkpoint{Root: []byte{'A'}}
 	service.bestJustifiedCheckpt = &ethpb.Checkpoint{Root: []byte{'A'}}
@@ -303,12 +344,12 @@ func TestFillForkChoiceMissingBlocks_CanSave(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 	service.forkChoiceStore = protoarray.New(0, 0, [32]byte{'A'})
-	service.finalizedCheckpt = &ethpb.Checkpoint{}
+	service.finalizedCheckpt = &ethpb.Checkpoint{Root: make([]byte, 32)}
 
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
 	require.NoError(t, db.SaveBlock(ctx, genesis))
-	validGenesisRoot, err := stateutil.BlockRoot(genesis.Block)
+	validGenesisRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
 	st := testutil.NewBeaconState()
 
@@ -317,10 +358,12 @@ func TestFillForkChoiceMissingBlocks_CanSave(t *testing.T) {
 	require.NoError(t, err)
 
 	beaconState, _ := testutil.DeterministicGenesisState(t, 32)
-	block := &ethpb.BeaconBlock{Slot: 9, ParentRoot: roots[8], Body: &ethpb.BeaconBlockBody{Graffiti: []byte{}}}
+	block := testutil.NewBeaconBlock()
+	block.Block.Slot = 9
+	block.Block.ParentRoot = roots[8]
 
 	err = service.fillInForkChoiceMissingBlocks(
-		context.Background(), block, beaconState.FinalizedCheckpoint(), beaconState.CurrentJustifiedCheckpoint())
+		context.Background(), block.Block, beaconState.FinalizedCheckpoint(), beaconState.CurrentJustifiedCheckpoint())
 	require.NoError(t, err)
 
 	// 5 nodes from the block tree 1. B0 - B3 - B4 - B6 - B8
@@ -344,22 +387,27 @@ func TestFillForkChoiceMissingBlocks_FilterFinalized(t *testing.T) {
 	genesisStateRoot := [32]byte{}
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
 	assert.NoError(t, db.SaveBlock(ctx, genesis))
-	validGenesisRoot, err := stateutil.BlockRoot(genesis.Block)
+	validGenesisRoot, err := genesis.Block.HashTreeRoot()
 	assert.NoError(t, err)
 	st := testutil.NewBeaconState()
 
 	require.NoError(t, service.beaconDB.SaveState(ctx, st.Copy(), validGenesisRoot))
 
 	// Define a tree branch, slot 63 <- 64 <- 65
-	b63 := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 63, Body: &ethpb.BeaconBlockBody{}}}
+	b63 := testutil.NewBeaconBlock()
+	b63.Block.Slot = 63
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, b63))
-	r63, err := stateutil.BlockRoot(b63.Block)
+	r63, err := b63.Block.HashTreeRoot()
 	require.NoError(t, err)
-	b64 := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 64, ParentRoot: r63[:], Body: &ethpb.BeaconBlockBody{}}}
+	b64 := testutil.NewBeaconBlock()
+	b64.Block.Slot = 64
+	b64.Block.ParentRoot = r63[:]
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, b64))
-	r64, err := stateutil.BlockRoot(b64.Block)
+	r64, err := b64.Block.HashTreeRoot()
 	require.NoError(t, err)
-	b65 := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 65, ParentRoot: r64[:], Body: &ethpb.BeaconBlockBody{}}}
+	b65 := testutil.NewBeaconBlock()
+	b65.Block.Slot = 65
+	b65.Block.ParentRoot = r64[:]
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, b65))
 
 	beaconState, _ := testutil.DeterministicGenesisState(t, 32)
@@ -380,58 +428,74 @@ func TestFillForkChoiceMissingBlocks_FilterFinalized(t *testing.T) {
 //    \- B3 - B4 - B6 - B8
 // (B1, and B3 are all from the same slots)
 func blockTree1(db db.Database, genesisRoot []byte) ([][]byte, error) {
-	b0 := &ethpb.BeaconBlock{Slot: 0, ParentRoot: genesisRoot}
-	r0, err := ssz.HashTreeRoot(b0)
+	genesisRoot = bytesutil.PadTo(genesisRoot, 32)
+	b0 := testutil.NewBeaconBlock()
+	b0.Block.Slot = 0
+	b0.Block.ParentRoot = genesisRoot
+	r0, err := b0.Block.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
-	b1 := &ethpb.BeaconBlock{Slot: 1, ParentRoot: r0[:]}
-	r1, err := ssz.HashTreeRoot(b1)
+	b1 := testutil.NewBeaconBlock()
+	b1.Block.Slot = 1
+	b1.Block.ParentRoot = r0[:]
+	r1, err := b1.Block.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
-	b3 := &ethpb.BeaconBlock{Slot: 3, ParentRoot: r0[:]}
-	r3, err := ssz.HashTreeRoot(b3)
+	b3 := testutil.NewBeaconBlock()
+	b3.Block.Slot = 3
+	b3.Block.ParentRoot = r0[:]
+	r3, err := b3.Block.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
-	b4 := &ethpb.BeaconBlock{Slot: 4, ParentRoot: r3[:]}
-	r4, err := ssz.HashTreeRoot(b4)
+	b4 := testutil.NewBeaconBlock()
+	b4.Block.Slot = 4
+	b4.Block.ParentRoot = r3[:]
+	r4, err := b4.Block.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
-	b5 := &ethpb.BeaconBlock{Slot: 5, ParentRoot: r4[:]}
-	r5, err := ssz.HashTreeRoot(b5)
+	b5 := testutil.NewBeaconBlock()
+	b5.Block.Slot = 5
+	b5.Block.ParentRoot = r4[:]
+	r5, err := b5.Block.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
-	b6 := &ethpb.BeaconBlock{Slot: 6, ParentRoot: r4[:]}
-	r6, err := ssz.HashTreeRoot(b6)
+	b6 := testutil.NewBeaconBlock()
+	b6.Block.Slot = 6
+	b6.Block.ParentRoot = r4[:]
+	r6, err := b6.Block.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
-	b7 := &ethpb.BeaconBlock{Slot: 7, ParentRoot: r5[:]}
-	r7, err := ssz.HashTreeRoot(b7)
+	b7 := testutil.NewBeaconBlock()
+	b7.Block.Slot = 7
+	b7.Block.ParentRoot = r5[:]
+	r7, err := b7.Block.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
-	b8 := &ethpb.BeaconBlock{Slot: 8, ParentRoot: r6[:]}
-	r8, err := ssz.HashTreeRoot(b8)
+	b8 := testutil.NewBeaconBlock()
+	b8.Block.Slot = 8
+	b8.Block.ParentRoot = r6[:]
+	r8, err := b8.Block.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
 	st := testutil.NewBeaconState()
 
-	for _, b := range []*ethpb.BeaconBlock{b0, b1, b3, b4, b5, b6, b7, b8} {
+	for _, b := range []*ethpb.SignedBeaconBlock{b0, b1, b3, b4, b5, b6, b7, b8} {
 		beaconBlock := testutil.NewBeaconBlock()
-		beaconBlock.Block.Slot = b.Slot
-		beaconBlock.Block.ParentRoot = bytesutil.PadTo(b.ParentRoot, 32)
-		beaconBlock.Block.Body = &ethpb.BeaconBlockBody{}
+		beaconBlock.Block.Slot = b.Block.Slot
+		beaconBlock.Block.ParentRoot = bytesutil.PadTo(b.Block.ParentRoot, 32)
 		if err := db.SaveBlock(context.Background(), beaconBlock); err != nil {
 			return nil, err
 		}
 		if err := db.SaveState(context.Background(), st.Copy(), bytesutil.ToBytes32(beaconBlock.Block.ParentRoot)); err != nil {
-			return nil, err
+			return nil, errors.Wrap(err, "could not save state")
 		}
 	}
 	if err := db.SaveState(context.Background(), st.Copy(), r1); err != nil {
@@ -447,11 +511,20 @@ func blockTree1(db db.Database, genesisRoot []byte) ([][]byte, error) {
 }
 
 func TestCurrentSlot_HandlesOverflow(t *testing.T) {
-	svc := Service{genesisTime: roughtime.Now().Add(1 * time.Hour)}
+	svc := Service{genesisTime: timeutils.Now().Add(1 * time.Hour)}
 
 	slot := svc.CurrentSlot()
 	require.Equal(t, uint64(0), slot, "Unexpected slot")
 }
+func TestAncestorByDB_CtxErr(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	service, err := NewService(ctx, &Config{})
+	require.NoError(t, err)
+
+	cancel()
+	_, err = service.ancestorByDB(ctx, [32]byte{}, 0)
+	require.ErrorContains(t, "context canceled", err)
+}
 
 func TestAncestor_HandleSkipSlot(t *testing.T) {
 	ctx := context.Background()
@@ -461,20 +534,25 @@ func TestAncestor_HandleSkipSlot(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	b1 := &ethpb.BeaconBlock{Slot: 1, ParentRoot: []byte{'a'}}
-	r1, err := ssz.HashTreeRoot(b1)
+	b1 := testutil.NewBeaconBlock()
+	b1.Block.Slot = 1
+	b1.Block.ParentRoot = bytesutil.PadTo([]byte{'a'}, 32)
+	r1, err := b1.Block.HashTreeRoot()
 	require.NoError(t, err)
-	b100 := &ethpb.BeaconBlock{Slot: 100, ParentRoot: r1[:]}
-	r100, err := ssz.HashTreeRoot(b100)
+	b100 := testutil.NewBeaconBlock()
+	b100.Block.Slot = 100
+	b100.Block.ParentRoot = r1[:]
+	r100, err := b100.Block.HashTreeRoot()
 	require.NoError(t, err)
-	b200 := &ethpb.BeaconBlock{Slot: 200, ParentRoot: r100[:]}
-	r200, err := ssz.HashTreeRoot(b200)
+	b200 := testutil.NewBeaconBlock()
+	b200.Block.Slot = 200
+	b200.Block.ParentRoot = r100[:]
+	r200, err := b200.Block.HashTreeRoot()
 	require.NoError(t, err)
-	for _, b := range []*ethpb.BeaconBlock{b1, b100, b200} {
+	for _, b := range []*ethpb.SignedBeaconBlock{b1, b100, b200} {
 		beaconBlock := testutil.NewBeaconBlock()
-		beaconBlock.Block.Slot = b.Slot
-		beaconBlock.Block.ParentRoot = bytesutil.PadTo(b.ParentRoot, 32)
-		beaconBlock.Block.Body = &ethpb.BeaconBlockBody{}
+		beaconBlock.Block.Slot = b.Block.Slot
+		beaconBlock.Block.ParentRoot = bytesutil.PadTo(b.Block.ParentRoot, 32)
 		require.NoError(t, db.SaveBlock(context.Background(), beaconBlock))
 	}
 
@@ -493,6 +571,82 @@ func TestAncestor_HandleSkipSlot(t *testing.T) {
 	}
 }
 
+func TestAncestor_CanUseForkchoice(t *testing.T) {
+	ctx := context.Background()
+	cfg := &Config{ForkChoiceStore: protoarray.New(0, 0, [32]byte{})}
+	service, err := NewService(ctx, cfg)
+	require.NoError(t, err)
+
+	b1 := testutil.NewBeaconBlock()
+	b1.Block.Slot = 1
+	b1.Block.ParentRoot = bytesutil.PadTo([]byte{'a'}, 32)
+	r1, err := b1.Block.HashTreeRoot()
+	require.NoError(t, err)
+	b100 := testutil.NewBeaconBlock()
+	b100.Block.Slot = 100
+	b100.Block.ParentRoot = r1[:]
+	r100, err := b100.Block.HashTreeRoot()
+	require.NoError(t, err)
+	b200 := testutil.NewBeaconBlock()
+	b200.Block.Slot = 200
+	b200.Block.ParentRoot = r100[:]
+	r200, err := b200.Block.HashTreeRoot()
+	require.NoError(t, err)
+	for _, b := range []*ethpb.SignedBeaconBlock{b1, b100, b200} {
+		beaconBlock := testutil.NewBeaconBlock()
+		beaconBlock.Block.Slot = b.Block.Slot
+		beaconBlock.Block.ParentRoot = bytesutil.PadTo(b.Block.ParentRoot, 32)
+		r, err := b.Block.HashTreeRoot()
+		require.NoError(t, err)
+		require.NoError(t, service.forkChoiceStore.ProcessBlock(context.Background(), b.Block.Slot, r, bytesutil.ToBytes32(b.Block.ParentRoot), [32]byte{}, 0, 0)) // Saves blocks to fork choice store.
+	}
+
+	r, err := service.ancestor(context.Background(), r200[:], 150)
+	require.NoError(t, err)
+	if bytesutil.ToBytes32(r) != r100 {
+		t.Error("Did not get correct root")
+	}
+}
+
+func TestAncestor_CanUseDB(t *testing.T) {
+	ctx := context.Background()
+	db, _ := testDB.SetupDB(t)
+
+	cfg := &Config{BeaconDB: db, ForkChoiceStore: protoarray.New(0, 0, [32]byte{})}
+	service, err := NewService(ctx, cfg)
+	require.NoError(t, err)
+
+	b1 := testutil.NewBeaconBlock()
+	b1.Block.Slot = 1
+	b1.Block.ParentRoot = bytesutil.PadTo([]byte{'a'}, 32)
+	r1, err := b1.Block.HashTreeRoot()
+	require.NoError(t, err)
+	b100 := testutil.NewBeaconBlock()
+	b100.Block.Slot = 100
+	b100.Block.ParentRoot = r1[:]
+	r100, err := b100.Block.HashTreeRoot()
+	require.NoError(t, err)
+	b200 := testutil.NewBeaconBlock()
+	b200.Block.Slot = 200
+	b200.Block.ParentRoot = r100[:]
+	r200, err := b200.Block.HashTreeRoot()
+	require.NoError(t, err)
+	for _, b := range []*ethpb.SignedBeaconBlock{b1, b100, b200} {
+		beaconBlock := testutil.NewBeaconBlock()
+		beaconBlock.Block.Slot = b.Block.Slot
+		beaconBlock.Block.ParentRoot = bytesutil.PadTo(b.Block.ParentRoot, 32)
+		require.NoError(t, db.SaveBlock(context.Background(), beaconBlock)) // Saves blocks to DB.
+	}
+
+	require.NoError(t, service.forkChoiceStore.ProcessBlock(context.Background(), 200, r200, r200, [32]byte{}, 0, 0))
+
+	r, err := service.ancestor(context.Background(), r200[:], 150)
+	require.NoError(t, err)
+	if bytesutil.ToBytes32(r) != r100 {
+		t.Error("Did not get correct root")
+	}
+}
+
 func TestEnsureRootNotZeroHashes(t *testing.T) {
 	ctx := context.Background()
 	cfg := &Config{}
@@ -557,16 +711,20 @@ func TestFinalizedImpliesNewJustified(t *testing.T) {
 		require.NoError(t, service.beaconDB.SaveState(ctx, genesisState, bytesutil.ToBytes32(test.want.Root)))
 
 		if test.args.diffFinalizedCheckPoint {
-			b1 := &ethpb.BeaconBlock{Slot: 1, ParentRoot: []byte{'a'}}
-			r1, err := ssz.HashTreeRoot(b1)
+			b1 := testutil.NewBeaconBlock()
+			b1.Block.Slot = 1
+			b1.Block.ParentRoot = bytesutil.PadTo([]byte{'a'}, 32)
+			r1, err := b1.Block.HashTreeRoot()
 			require.NoError(t, err)
-			b100 := &ethpb.BeaconBlock{Slot: 100, ParentRoot: r1[:]}
-			r100, err := ssz.HashTreeRoot(b100)
+			b100 := testutil.NewBeaconBlock()
+			b100.Block.Slot = 100
+			b100.Block.ParentRoot = r1[:]
+			r100, err := b100.Block.HashTreeRoot()
 			require.NoError(t, err)
-			for _, b := range []*ethpb.BeaconBlock{b1, b100} {
+			for _, b := range []*ethpb.SignedBeaconBlock{b1, b100} {
 				beaconBlock := testutil.NewBeaconBlock()
-				beaconBlock.Block.Slot = b.Slot
-				beaconBlock.Block.ParentRoot = bytesutil.PadTo(b.ParentRoot, 32)
+				beaconBlock.Block.Slot = b.Block.Slot
+				beaconBlock.Block.ParentRoot = bytesutil.PadTo(b.Block.ParentRoot, 32)
 				require.NoError(t, service.beaconDB.SaveBlock(context.Background(), beaconBlock))
 			}
 			service.finalizedCheckpt = &ethpb.Checkpoint{Root: []byte{'c'}, Epoch: 1}
@@ -584,14 +742,14 @@ func TestVerifyBlkDescendant(t *testing.T) {
 
 	b := testutil.NewBeaconBlock()
 	b.Block.Slot = 1
-	r, err := stateutil.BlockRoot(b.Block)
+	r, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
 	require.NoError(t, db.SaveBlock(ctx, b))
 
 	b1 := testutil.NewBeaconBlock()
 	b1.Block.Slot = 1
 	b1.Block.Body.Graffiti = bytesutil.PadTo([]byte{'a'}, 32)
-	r1, err := stateutil.BlockRoot(b1.Block)
+	r1, err := b1.Block.HashTreeRoot()
 	require.NoError(t, err)
 	require.NoError(t, db.SaveBlock(ctx, b1))
 
@@ -601,18 +759,16 @@ func TestVerifyBlkDescendant(t *testing.T) {
 		finalizedSlot uint64
 	}
 	tests := []struct {
-		name        string
-		args        args
-		shouldError bool
-		err         string
+		name      string
+		args      args
+		wantedErr string
 	}{
 		{
 			name: "could not get finalized block in block service cache",
 			args: args{
 				finalizedRoot: [32]byte{'a'},
 			},
-			shouldError: true,
-			err:         "nil finalized block",
+			wantedErr: "nil finalized block",
 		},
 		{
 			name: "could not get finalized block root in DB",
@@ -620,8 +776,7 @@ func TestVerifyBlkDescendant(t *testing.T) {
 				finalizedRoot: r,
 				parentRoot:    [32]byte{'a'},
 			},
-			shouldError: true,
-			err:         "could not get finalized block root",
+			wantedErr: "could not get finalized block root",
 		},
 		{
 			name: "is not descendant",
@@ -629,8 +784,7 @@ func TestVerifyBlkDescendant(t *testing.T) {
 				finalizedRoot: r1,
 				parentRoot:    r,
 			},
-			shouldError: true,
-			err:         "is not a descendent of the current finalized block slot",
+			wantedErr: "is not a descendent of the current finalized block slot",
 		},
 		{
 			name: "is descendant",
@@ -638,22 +792,19 @@ func TestVerifyBlkDescendant(t *testing.T) {
 				finalizedRoot: r,
 				parentRoot:    r,
 			},
-			shouldError: false,
 		},
 	}
-	for _, test := range tests {
+	for _, tt := range tests {
 		service, err := NewService(ctx, &Config{BeaconDB: db, StateGen: stategen.New(db, sc), ForkChoiceStore: protoarray.New(0, 0, [32]byte{})})
 		require.NoError(t, err)
 		service.finalizedCheckpt = &ethpb.Checkpoint{
-			Root: test.args.finalizedRoot[:],
+			Root: tt.args.finalizedRoot[:],
 		}
-		err = service.VerifyBlkDescendant(ctx, test.args.parentRoot)
-		if test.shouldError {
-			if err == nil || !strings.Contains(err.Error(), test.err) {
-				t.Error("Did not get wanted error")
-			}
+		err = service.VerifyBlkDescendant(ctx, tt.args.parentRoot)
+		if tt.wantedErr != "" {
+			assert.ErrorContains(t, tt.wantedErr, err)
 		} else if err != nil {
-			t.Error(err)
+			assert.NoError(t, err)
 		}
 	}
 }
@@ -665,8 +816,8 @@ func TestUpdateJustifiedInitSync(t *testing.T) {
 	service, err := NewService(ctx, cfg)
 	require.NoError(t, err)
 
-	gBlk := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{}}
-	gRoot, err := stateutil.BlockRoot(gBlk.Block)
+	gBlk := testutil.NewBeaconBlock()
+	gRoot, err := gBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	require.NoError(t, service.beaconDB.SaveBlock(ctx, gBlk))
 	require.NoError(t, service.beaconDB.SaveGenesisBlockRoot(ctx, gRoot))
@@ -683,8 +834,6 @@ func TestUpdateJustifiedInitSync(t *testing.T) {
 	assert.DeepEqual(t, currentCp, service.prevJustifiedCheckpt, "Incorrect previous justified checkpoint")
 	assert.DeepEqual(t, newCp, service.CurrentJustifiedCheckpt(), "Incorrect current justified checkpoint in cache")
 	cp, err := service.beaconDB.JustifiedCheckpoint(ctx)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 	assert.DeepEqual(t, newCp, cp, "Incorrect current justified checkpoint in db")
 }

beacon-chain/blockchain/receive_attestation.go

@@ -10,11 +10,12 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/feed"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
+	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/featureconfig"
 	"github.com/prysmaticlabs/prysm/shared/params"
-	"github.com/prysmaticlabs/prysm/shared/roughtime"
 	"github.com/prysmaticlabs/prysm/shared/slotutil"
+	"github.com/prysmaticlabs/prysm/shared/timeutils"
 	"github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
 )
@@ -24,6 +25,8 @@ type AttestationReceiver interface {
 	ReceiveAttestationNoPubsub(ctx context.Context, att *ethpb.Attestation) error
 	IsValidAttestation(ctx context.Context, att *ethpb.Attestation) bool
 	AttestationPreState(ctx context.Context, att *ethpb.Attestation) (*state.BeaconState, error)
+	AttestationCheckPtInfo(ctx context.Context, att *ethpb.Attestation) (*pb.CheckPtInfo, error)
+	VerifyLmdFfgConsistency(ctx context.Context, att *ethpb.Attestation) error
 }
 
 // ReceiveAttestationNoPubsub is a function that defines the operations that are performed on
@@ -61,7 +64,7 @@ func (s *Service) IsValidAttestation(ctx context.Context, att *ethpb.Attestation
 		return false
 	}
 
-	if err := blocks.VerifyAttestation(ctx, baseState, att); err != nil {
+	if err := blocks.VerifyAttestationSignature(ctx, baseState, att); err != nil {
 		log.WithError(err).Error("Failed to validate attestation")
 		return false
 	}
@@ -71,9 +74,34 @@ func (s *Service) IsValidAttestation(ctx context.Context, att *ethpb.Attestation
 
 // AttestationPreState returns the pre state of attestation.
 func (s *Service) AttestationPreState(ctx context.Context, att *ethpb.Attestation) (*state.BeaconState, error) {
+	ss, err := helpers.StartSlot(att.Data.Target.Epoch)
+	if err != nil {
+		return nil, err
+	}
+	if err := helpers.ValidateSlotClock(ss, uint64(s.genesisTime.Unix())); err != nil {
+		return nil, err
+	}
 	return s.getAttPreState(ctx, att.Data.Target)
 }
 
+// AttestationCheckPtInfo returns the check point info of attestation that can be used to verify the attestation
+// contents and signatures.
+func (s *Service) AttestationCheckPtInfo(ctx context.Context, att *ethpb.Attestation) (*pb.CheckPtInfo, error) {
+	ss, err := helpers.StartSlot(att.Data.Target.Epoch)
+	if err != nil {
+		return nil, err
+	}
+	if err := helpers.ValidateSlotClock(ss, uint64(s.genesisTime.Unix())); err != nil {
+		return nil, err
+	}
+	return s.getAttCheckPtInfo(ctx, att.Data.Target, helpers.SlotToEpoch(att.Data.Slot))
+}
+
+// VerifyLmdFfgConsistency verifies that attestation's LMD and FFG votes are consistency to each other.
+func (s *Service) VerifyLmdFfgConsistency(ctx context.Context, a *ethpb.Attestation) error {
+	return s.verifyLMDFFGConsistent(ctx, a.Data.Target.Epoch, a.Data.Target.Root, a.Data.BeaconBlockRoot)
+}
+
 // This processes attestations from the attestation pool to account for validator votes and fork choice.
 func (s *Service) processAttestation(subscribedToStateEvents chan struct{}) {
 	// Wait for state to be initialized.
@@ -89,7 +117,7 @@ func (s *Service) processAttestation(subscribedToStateEvents chan struct{}) {
 		case <-s.ctx.Done():
 			return
 		case <-st.C():
-			ctx := context.Background()
+			ctx := s.ctx
 			atts := s.attPool.ForkchoiceAttestations()
 			for _, a := range atts {
 				// Based on the spec, don't process the attestation until the subsequent slot.
@@ -131,7 +159,7 @@ func (s *Service) processAttestation(subscribedToStateEvents chan struct{}) {
 // This verifies the epoch of input checkpoint is within current epoch and previous epoch
 // with respect to current time. Returns true if it's within, false if it's not.
 func (s *Service) verifyCheckpointEpoch(c *ethpb.Checkpoint) bool {
-	now := uint64(roughtime.Now().Unix())
+	now := uint64(timeutils.Now().Unix())
 	genesisTime := uint64(s.genesisTime.Unix())
 	currentSlot := (now - genesisTime) / params.BeaconConfig().SecondsPerSlot
 	currentEpoch := helpers.SlotToEpoch(currentSlot)

beacon-chain/blockchain/receive_attestation_test.go

@@ -1,13 +1,16 @@
 package blockchain
 
 import (
+	"context"
 	"testing"
 	"time"
 
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
+	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
+	"github.com/prysmaticlabs/prysm/shared/testutil/require"
 )
 
 func TestVerifyCheckpointEpoch_Ok(t *testing.T) {
@@ -17,6 +20,30 @@ func TestVerifyCheckpointEpoch_Ok(t *testing.T) {
 	chainService := setupBeaconChain(t, db, sc)
 	chainService.genesisTime = time.Now()
 
-	assert.Equal(t, true, chainService.verifyCheckpointEpoch(&ethpb.Checkpoint{}))
+	assert.Equal(t, true, chainService.verifyCheckpointEpoch(&ethpb.Checkpoint{Root: make([]byte, 32)}))
 	assert.Equal(t, false, chainService.verifyCheckpointEpoch(&ethpb.Checkpoint{Epoch: 1}))
 }
+
+func TestAttestationPreState_FarFutureSlot(t *testing.T) {
+	helpers.ClearCache()
+	db, sc := testDB.SetupDB(t)
+
+	chainService := setupBeaconChain(t, db, sc)
+	chainService.genesisTime = time.Now()
+
+	e := helpers.MaxSlotBuffer/params.BeaconConfig().SlotsPerEpoch + 1
+	_, err := chainService.AttestationCheckPtInfo(context.Background(), &ethpb.Attestation{Data: &ethpb.AttestationData{Target: &ethpb.Checkpoint{Epoch: e}}})
+	require.ErrorContains(t, "exceeds max allowed value relative to the local clock", err)
+}
+
+func TestAttestationCheckPtInfo_FarFutureSlot(t *testing.T) {
+	helpers.ClearCache()
+	db, sc := testDB.SetupDB(t)
+
+	chainService := setupBeaconChain(t, db, sc)
+	chainService.genesisTime = time.Now()
+
+	e := helpers.MaxSlotBuffer/params.BeaconConfig().SlotsPerEpoch + 1
+	_, err := chainService.AttestationPreState(context.Background(), &ethpb.Attestation{Data: &ethpb.AttestationData{Target: &ethpb.Checkpoint{Epoch: e}}})
+	require.ErrorContains(t, "exceeds max allowed value relative to the local clock", err)
+}

beacon-chain/blockchain/receive_block.go

@@ -59,7 +59,7 @@ func (s *Service) ReceiveBlock(ctx context.Context, block *ethpb.SignedBeaconBlo
 	}
 
 	// Reports on block and fork choice metrics.
-	reportSlotMetrics(blockCopy.Block.Slot, s.headSlot(), s.CurrentSlot(), s.finalizedCheckpt)
+	reportSlotMetrics(blockCopy.Block.Slot, s.HeadSlot(), s.CurrentSlot(), s.finalizedCheckpt)
 
 	// Log block sync status.
 	logBlockSyncStatus(blockCopy.Block, blockRoot, s.finalizedCheckpt)
@@ -95,7 +95,7 @@ func (s *Service) ReceiveBlockInitialSync(ctx context.Context, block *ethpb.Sign
 	})
 
 	// Reports on blockCopy and fork choice metrics.
-	reportSlotMetrics(blockCopy.Block.Slot, s.headSlot(), s.CurrentSlot(), s.finalizedCheckpt)
+	reportSlotMetrics(blockCopy.Block.Slot, s.HeadSlot(), s.CurrentSlot(), s.finalizedCheckpt)
 
 	// Log state transition data.
 	log.WithFields(logrus.Fields{
@@ -139,7 +139,14 @@ func (s *Service) ReceiveBlockBatch(ctx context.Context, blocks []*ethpb.SignedB
 		})
 
 		// Reports on blockCopy and fork choice metrics.
-		reportSlotMetrics(blockCopy.Block.Slot, s.headSlot(), s.CurrentSlot(), s.finalizedCheckpt)
+		reportSlotMetrics(blockCopy.Block.Slot, s.HeadSlot(), s.CurrentSlot(), s.finalizedCheckpt)
+	}
+
+	if err := s.VerifyWeakSubjectivityRoot(s.ctx); err != nil {
+		// log.Fatalf will prevent defer from being called
+		span.End()
+		// Exit run time if the node failed to verify weak subjectivity checkpoint.
+		log.Fatalf("Could not verify weak subjectivity checkpoint: %v", err)
 	}
 
 	return nil

beacon-chain/blockchain/receive_block_test.go

@@ -12,7 +12,6 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/operations/attestations"
 	"github.com/prysmaticlabs/prysm/beacon-chain/operations/voluntaryexits"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
@@ -37,10 +36,10 @@ func TestService_ReceiveBlock(t *testing.T) {
 		block *ethpb.SignedBeaconBlock
 	}
 	tests := []struct {
-		name    string
-		args    args
-		wantErr bool
-		check   func(*testing.T, *Service)
+		name      string
+		args      args
+		wantedErr string
+		check     func(*testing.T, *Service)
 	}{
 		{
 			name: "applies block with state transition",
@@ -139,13 +138,16 @@ func TestService_ReceiveBlock(t *testing.T) {
 			require.NoError(t, s.saveGenesisData(ctx, genesis))
 			gBlk, err := s.beaconDB.GenesisBlock(ctx)
 			require.NoError(t, err)
-			gRoot, err := stateutil.BlockRoot(gBlk.Block)
-			s.finalizedCheckpt = &ethpb.Checkpoint{Root: gRoot[:]}
-			root, err := stateutil.BlockRoot(tt.args.block.Block)
+			gRoot, err := gBlk.Block.HashTreeRoot()
 			require.NoError(t, err)
-			if err := s.ReceiveBlock(ctx, tt.args.block, root); (err != nil) != tt.wantErr {
-				t.Errorf("ReceiveBlock() error = %v, wantErr %v", err, tt.wantErr)
+			s.finalizedCheckpt = &ethpb.Checkpoint{Root: gRoot[:]}
+			root, err := tt.args.block.Block.HashTreeRoot()
+			require.NoError(t, err)
+			err = s.ReceiveBlock(ctx, tt.args.block, root)
+			if tt.wantedErr != "" {
+				assert.ErrorContains(t, tt.wantedErr, err)
 			} else {
+				assert.NoError(t, err)
 				tt.check(t, s)
 			}
 		})
@@ -177,9 +179,10 @@ func TestService_ReceiveBlockUpdateHead(t *testing.T) {
 	require.NoError(t, s.saveGenesisData(ctx, genesis))
 	gBlk, err := s.beaconDB.GenesisBlock(ctx)
 	require.NoError(t, err)
-	gRoot, err := stateutil.BlockRoot(gBlk.Block)
+	gRoot, err := gBlk.Block.HashTreeRoot()
+	require.NoError(t, err)
 	s.finalizedCheckpt = &ethpb.Checkpoint{Root: gRoot[:]}
-	root, err := stateutil.BlockRoot(b.Block)
+	root, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
 	wg := sync.WaitGroup{}
 	wg.Add(1)
@@ -201,9 +204,7 @@ func TestService_ReceiveBlockInitialSync(t *testing.T) {
 	genesis, keys := testutil.DeterministicGenesisState(t, 64)
 	genFullBlock := func(t *testing.T, conf *testutil.BlockGenConfig, slot uint64) *ethpb.SignedBeaconBlock {
 		blk, err := testutil.GenerateFullBlock(genesis, keys, conf, slot)
-		if err != nil {
-			t.Error(err)
-		}
+		assert.NoError(t, err)
 		return blk
 	}
 
@@ -211,10 +212,10 @@ func TestService_ReceiveBlockInitialSync(t *testing.T) {
 		block *ethpb.SignedBeaconBlock
 	}
 	tests := []struct {
-		name    string
-		args    args
-		wantErr bool
-		check   func(*testing.T, *Service)
+		name      string
+		args      args
+		wantedErr string
+		check     func(*testing.T, *Service)
 	}{
 		{
 			name: "applies block with state transition",
@@ -261,14 +262,17 @@ func TestService_ReceiveBlockInitialSync(t *testing.T) {
 			gBlk, err := s.beaconDB.GenesisBlock(ctx)
 			require.NoError(t, err)
 
-			gRoot, err := stateutil.BlockRoot(gBlk.Block)
+			gRoot, err := gBlk.Block.HashTreeRoot()
+			require.NoError(t, err)
 			s.finalizedCheckpt = &ethpb.Checkpoint{Root: gRoot[:]}
-			root, err := stateutil.BlockRoot(tt.args.block.Block)
+			root, err := tt.args.block.Block.HashTreeRoot()
 			require.NoError(t, err)
 
-			if err := s.ReceiveBlockInitialSync(ctx, tt.args.block, root); (err != nil) != tt.wantErr {
-				t.Errorf("ReceiveBlockInitialSync() error = %v, wantErr %v", err, tt.wantErr)
+			err = s.ReceiveBlockInitialSync(ctx, tt.args.block, root)
+			if tt.wantedErr != "" {
+				assert.ErrorContains(t, tt.wantedErr, err)
 			} else {
+				assert.NoError(t, err)
 				tt.check(t, s)
 			}
 		})
@@ -281,9 +285,7 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 	genesis, keys := testutil.DeterministicGenesisState(t, 64)
 	genFullBlock := func(t *testing.T, conf *testutil.BlockGenConfig, slot uint64) *ethpb.SignedBeaconBlock {
 		blk, err := testutil.GenerateFullBlock(genesis, keys, conf, slot)
-		if err != nil {
-			t.Error(err)
-		}
+		assert.NoError(t, err)
 		return blk
 	}
 
@@ -291,10 +293,10 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 		block *ethpb.SignedBeaconBlock
 	}
 	tests := []struct {
-		name    string
-		args    args
-		wantErr bool
-		check   func(*testing.T, *Service)
+		name      string
+		args      args
+		wantedErr string
+		check     func(*testing.T, *Service)
 	}{
 		{
 			name: "applies block with state transition",
@@ -322,8 +324,8 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			db, stateSummaryCache := testDB.SetupDB(t)
-			genesisBlockRoot := bytesutil.ToBytes32(nil)
-
+			genesisBlockRoot, err := genesis.HashTreeRoot(ctx)
+			require.NoError(t, err)
 			cfg := &Config{
 				BeaconDB: db,
 				ForkChoiceStore: protoarray.New(
@@ -341,15 +343,18 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 			gBlk, err := s.beaconDB.GenesisBlock(ctx)
 			require.NoError(t, err)
 
-			gRoot, err := stateutil.BlockRoot(gBlk.Block)
+			gRoot, err := gBlk.Block.HashTreeRoot()
+			require.NoError(t, err)
 			s.finalizedCheckpt = &ethpb.Checkpoint{Root: gRoot[:]}
-			root, err := stateutil.BlockRoot(tt.args.block.Block)
+			root, err := tt.args.block.Block.HashTreeRoot()
 			require.NoError(t, err)
 			blks := []*ethpb.SignedBeaconBlock{tt.args.block}
 			roots := [][32]byte{root}
-			if err := s.ReceiveBlockBatch(ctx, blks, roots); (err != nil) != tt.wantErr {
-				t.Errorf("ReceiveBlockBatch() error = %v, wantErr %v", err, tt.wantErr)
+			err = s.ReceiveBlockBatch(ctx, blks, roots)
+			if tt.wantedErr != "" {
+				assert.ErrorContains(t, tt.wantedErr, err)
 			} else {
+				assert.NoError(t, err)
 				tt.check(t, s)
 			}
 		})

beacon-chain/blockchain/service.go

@@ -30,7 +30,6 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/powchain"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
@@ -75,6 +74,10 @@ type Service struct {
 	recentCanonicalBlocksLock sync.RWMutex
 	justifiedBalances         []uint64
 	justifiedBalancesLock     sync.RWMutex
+	checkPtInfoCache          *checkPtInfoCache
+	wsEpoch                   uint64
+	wsRoot                    []byte
+	wsVerified                bool
 }
 
 // Config options for the service.
@@ -92,6 +95,8 @@ type Config struct {
 	ForkChoiceStore   f.ForkChoicer
 	OpsService        *attestations.Service
 	StateGen          *stategen.State
+	WspBlockRoot      []byte
+	WspEpoch          uint64
 }
 
 // NewService instantiates a new block service instance that will
@@ -119,6 +124,9 @@ func NewService(ctx context.Context, cfg *Config) (*Service, error) {
 		initSyncBlocks:        make(map[[32]byte]*ethpb.SignedBeaconBlock),
 		recentCanonicalBlocks: make(map[[32]byte]bool),
 		justifiedBalances:     make([]uint64, 0),
+		checkPtInfoCache:      newCheckPointInfoCache(),
+		wsEpoch:               cfg.WspEpoch,
+		wsRoot:                cfg.WspBlockRoot,
 	}, nil
 }
 
@@ -138,7 +146,23 @@ func (s *Service) Start() {
 	}
 
 	if beaconState == nil {
-		beaconState, err = s.stateGen.StateByRoot(s.ctx, bytesutil.ToBytes32(cp.Root))
+		r := bytesutil.ToBytes32(cp.Root)
+		// Before the first finalized epoch, in the current epoch,
+		// the finalized root is defined as zero hashes instead of genesis root hash.
+		// We want to use genesis root to retrieve for state.
+		if r == params.BeaconConfig().ZeroHash {
+			genesisBlock, err := s.beaconDB.GenesisBlock(s.ctx)
+			if err != nil {
+				log.Fatalf("Could not fetch finalized cp: %v", err)
+			}
+			if genesisBlock != nil {
+				r, err = genesisBlock.Block.HashTreeRoot()
+				if err != nil {
+					log.Fatalf("Could not tree hash genesis block: %v", err)
+				}
+			}
+		}
+		beaconState, err = s.stateGen.StateByRoot(s.ctx, r)
 		if err != nil {
 			log.Fatalf("Could not fetch beacon state by root: %v", err)
 		}
@@ -150,8 +174,8 @@ func (s *Service) Start() {
 	// If the chain has already been initialized, simply start the block processing routine.
 	if beaconState != nil {
 		log.Info("Blockchain data already exists in DB, initializing...")
-		s.genesisTime = time.Unix(int64(helpers.GenesisTime(beaconState)), 0)
-		s.opsService.SetGenesisTime(helpers.GenesisTime(beaconState))
+		s.genesisTime = time.Unix(int64(beaconState.GenesisTime()), 0)
+		s.opsService.SetGenesisTime(beaconState.GenesisTime())
 		if err := s.initializeChainInfo(s.ctx); err != nil {
 			log.Fatalf("Could not set up chain info: %v", err)
 		}
@@ -183,6 +207,11 @@ func (s *Service) Start() {
 		s.prevFinalizedCheckpt = stateTrie.CopyCheckpoint(finalizedCheckpoint)
 		s.resumeForkChoice(justifiedCheckpoint, finalizedCheckpoint)
 
+		if err := s.VerifyWeakSubjectivityRoot(s.ctx); err != nil {
+			// Exit run time if the node failed to verify weak subjectivity checkpoint.
+			log.Fatalf("Could not verify weak subjectivity checkpoint: %v", err)
+		}
+
 		s.stateNotifier.StateFeed().Send(&feed.Event{
 			Type: statefeed.Initialized,
 			Data: &statefeed.InitializedData{
@@ -258,7 +287,7 @@ func (s *Service) initializeBeaconChain(
 	genesisTime time.Time,
 	preGenesisState *stateTrie.BeaconState,
 	eth1data *ethpb.Eth1Data) (*stateTrie.BeaconState, error) {
-	_, span := trace.StartSpan(context.Background(), "beacon-chain.Service.initializeBeaconChain")
+	ctx, span := trace.StartSpan(ctx, "beacon-chain.Service.initializeBeaconChain")
 	defer span.End()
 	s.genesisTime = genesisTime
 	unixTime := uint64(genesisTime.Unix())
@@ -285,7 +314,7 @@ func (s *Service) initializeBeaconChain(
 		return nil, err
 	}
 
-	s.opsService.SetGenesisTime(helpers.GenesisTime(genesisState))
+	s.opsService.SetGenesisTime(genesisState.GenesisTime())
 
 	return genesisState, nil
 }
@@ -295,9 +324,13 @@ func (s *Service) Stop() error {
 	defer s.cancel()
 
 	if s.stateGen != nil && s.head != nil && s.head.state != nil {
-		return s.stateGen.ForceCheckpoint(s.ctx, s.head.state.FinalizedCheckpoint().Root)
+		if err := s.stateGen.ForceCheckpoint(s.ctx, s.head.state.FinalizedCheckpoint().Root); err != nil {
+			return err
+		}
 	}
-	return nil
+
+	// Save initial sync cached blocks to the DB before stop.
+	return s.beaconDB.SaveBlocks(s.ctx, s.getInitSyncBlocks())
 }
 
 // Status always returns nil unless there is an error condition that causes
@@ -322,7 +355,7 @@ func (s *Service) saveGenesisData(ctx context.Context, genesisState *stateTrie.B
 		return err
 	}
 	genesisBlk := blocks.NewGenesisBlock(stateRoot[:])
-	genesisBlkRoot, err := stateutil.BlockRoot(genesisBlk.Block)
+	genesisBlkRoot, err := genesisBlk.Block.HashTreeRoot()
 	if err != nil {
 		return errors.Wrap(err, "could not get genesis block root")
 	}
@@ -386,7 +419,7 @@ func (s *Service) initializeChainInfo(ctx context.Context) error {
 	if genesisBlock == nil {
 		return errors.New("no genesis block in db")
 	}
-	genesisBlkRoot, err := stateutil.BlockRoot(genesisBlock.Block)
+	genesisBlkRoot, err := genesisBlock.Block.HashTreeRoot()
 	if err != nil {
 		return errors.Wrap(err, "could not get signing root of genesis block")
 	}
@@ -397,7 +430,7 @@ func (s *Service) initializeChainInfo(ctx context.Context) error {
 		if err != nil {
 			return errors.Wrap(err, "could not retrieve head block")
 		}
-		headRoot, err := stateutil.BlockRoot(headBlock.Block)
+		headRoot, err := headBlock.Block.HashTreeRoot()
 		if err != nil {
 			return errors.Wrap(err, "could not hash head block")
 		}
@@ -418,17 +451,13 @@ func (s *Service) initializeChainInfo(ctx context.Context) error {
 		// would be the genesis state and block.
 		return errors.New("no finalized epoch in the database")
 	}
-	finalizedRoot := bytesutil.ToBytes32(finalized.Root)
+	finalizedRoot := s.ensureRootNotZeros(bytesutil.ToBytes32(finalized.Root))
 	var finalizedState *stateTrie.BeaconState
 
 	finalizedState, err = s.stateGen.Resume(ctx)
 	if err != nil {
 		return errors.Wrap(err, "could not get finalized state from db")
 	}
-	finalizedRoot = s.beaconDB.LastArchivedRoot(ctx)
-	if finalizedRoot == params.BeaconConfig().ZeroHash {
-		finalizedRoot = bytesutil.ToBytes32(finalized.Root)
-	}
 
 	finalizedBlock, err := s.beaconDB.Block(ctx, finalizedRoot)
 	if err != nil {

beacon-chain/blockchain/service_test.go

@@ -11,7 +11,6 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/gogo/protobuf/proto"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/beacon-chain/cache/depositcache"
 	b "github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
@@ -25,7 +24,6 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/powchain"
 	beaconstate "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	protodb "github.com/prysmaticlabs/prysm/proto/beacon/db"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
@@ -69,7 +67,7 @@ func (mb *mockBroadcaster) BroadcastAttestation(_ context.Context, _ uint64, _ *
 	return nil
 }
 
-var _ = p2p.Broadcaster(&mockBroadcaster{})
+var _ p2p.Broadcaster = (*mockBroadcaster)(nil)
 
 func setupBeaconChain(t *testing.T, beaconDB db.Database, sc *cache.StateSummaryCache) *Service {
 	endpoint := "http://127.0.0.1"
@@ -103,7 +101,7 @@ func setupBeaconChain(t *testing.T, beaconDB db.Database, sc *cache.StateSummary
 	opsService, err := attestations.NewService(ctx, &attestations.Config{Pool: attestations.NewPool()})
 	require.NoError(t, err)
 
-	depositCache, err := depositcache.NewDepositCache()
+	depositCache, err := depositcache.New()
 	require.NoError(t, err)
 
 	cfg := &Config{
@@ -120,9 +118,7 @@ func setupBeaconChain(t *testing.T, beaconDB db.Database, sc *cache.StateSummary
 	}
 
 	// Safe a state in stategen to purposes of testing a service stop / shutdown.
-	if err := cfg.StateGen.SaveState(ctx, bytesutil.ToBytes32(bState.FinalizedCheckpoint().Root), bState); err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, cfg.StateGen.SaveState(ctx, bytesutil.ToBytes32(bState.FinalizedCheckpoint().Root), bState))
 
 	chainService, err := NewService(ctx, cfg)
 	require.NoError(t, err, "Unable to setup chain service")
@@ -139,7 +135,7 @@ func TestChainStartStop_Initialized(t *testing.T) {
 	chainService := setupBeaconChain(t, db, sc)
 
 	genesisBlk := testutil.NewBeaconBlock()
-	blkRoot, err := stateutil.BlockRoot(genesisBlk.Block)
+	blkRoot, err := genesisBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	require.NoError(t, db.SaveBlock(ctx, genesisBlk))
 	s := testutil.NewBeaconState()
@@ -148,6 +144,33 @@ func TestChainStartStop_Initialized(t *testing.T) {
 	require.NoError(t, db.SaveHeadBlockRoot(ctx, blkRoot))
 	require.NoError(t, db.SaveGenesisBlockRoot(ctx, blkRoot))
 	require.NoError(t, db.SaveJustifiedCheckpoint(ctx, &ethpb.Checkpoint{Root: blkRoot[:]}))
+	require.NoError(t, db.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{Root: blkRoot[:]}))
+
+	// Test the start function.
+	chainService.Start()
+
+	require.NoError(t, chainService.Stop(), "Unable to stop chain service")
+
+	// The context should have been canceled.
+	assert.Equal(t, context.Canceled, chainService.ctx.Err(), "Context was not canceled")
+	require.LogsContain(t, hook, "data already exists")
+}
+
+func TestChainStartStop_GenesisZeroHashes(t *testing.T) {
+	hook := logTest.NewGlobal()
+	ctx := context.Background()
+	db, sc := testDB.SetupDB(t)
+
+	chainService := setupBeaconChain(t, db, sc)
+
+	genesisBlk := testutil.NewBeaconBlock()
+	blkRoot, err := genesisBlk.Block.HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, db.SaveBlock(ctx, genesisBlk))
+	s := testutil.NewBeaconState()
+	require.NoError(t, db.SaveState(ctx, s, blkRoot))
+	require.NoError(t, db.SaveGenesisBlockRoot(ctx, blkRoot))
+	require.NoError(t, db.SaveJustifiedCheckpoint(ctx, &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}))
 
 	// Test the start function.
 	chainService.Start()
@@ -179,11 +202,13 @@ func TestChainService_InitializeBeaconChain(t *testing.T) {
 	err = genState.SetEth1Data(&ethpb.Eth1Data{
 		DepositRoot:  hashTreeRoot[:],
 		DepositCount: uint64(len(deposits)),
+		BlockHash:    make([]byte, 32),
 	})
+	require.NoError(t, err)
 	genState, err = b.ProcessPreGenesisDeposits(ctx, genState, deposits)
 	require.NoError(t, err)
 
-	_, err = bc.initializeBeaconChain(ctx, time.Unix(0, 0), genState, &ethpb.Eth1Data{DepositRoot: hashTreeRoot[:]})
+	_, err = bc.initializeBeaconChain(ctx, time.Unix(0, 0), genState, &ethpb.Eth1Data{DepositRoot: hashTreeRoot[:], BlockHash: make([]byte, 32)})
 	require.NoError(t, err)
 
 	_, err = bc.HeadState(ctx)
@@ -193,7 +218,9 @@ func TestChainService_InitializeBeaconChain(t *testing.T) {
 	if headBlk == nil {
 		t.Error("Head state can't be nil after initialize beacon chain")
 	}
-	if bc.headRoot() == params.BeaconConfig().ZeroHash {
+	r, err := bc.HeadRoot(ctx)
+	require.NoError(t, err)
+	if bytesutil.ToBytes32(r) == params.BeaconConfig().ZeroHash {
 		t.Error("Canonical root for slot 0 can't be zeros after initialize beacon chain")
 	}
 }
@@ -205,7 +232,7 @@ func TestChainService_CorrectGenesisRoots(t *testing.T) {
 	chainService := setupBeaconChain(t, db, sc)
 
 	genesisBlk := testutil.NewBeaconBlock()
-	blkRoot, err := stateutil.BlockRoot(genesisBlk.Block)
+	blkRoot, err := genesisBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	require.NoError(t, db.SaveBlock(ctx, genesisBlk))
 	s := testutil.NewBeaconState()
@@ -213,10 +240,12 @@ func TestChainService_CorrectGenesisRoots(t *testing.T) {
 	require.NoError(t, db.SaveState(ctx, s, blkRoot))
 	require.NoError(t, db.SaveHeadBlockRoot(ctx, blkRoot))
 	require.NoError(t, db.SaveGenesisBlockRoot(ctx, blkRoot))
+	require.NoError(t, db.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{Root: blkRoot[:]}))
+
 	// Test the start function.
 	chainService.Start()
 
-	require.DeepEqual(t, params.BeaconConfig().ZeroHash[:], chainService.finalizedCheckpt.Root, "Finalize Checkpoint root is incorrect")
+	require.DeepEqual(t, blkRoot[:], chainService.finalizedCheckpt.Root, "Finalize Checkpoint root is incorrect")
 	require.DeepEqual(t, params.BeaconConfig().ZeroHash[:], chainService.justifiedCheckpt.Root, "Justified Checkpoint root is incorrect")
 
 	require.NoError(t, chainService.Stop(), "Unable to stop chain service")
@@ -228,7 +257,7 @@ func TestChainService_InitializeChainInfo(t *testing.T) {
 	ctx := context.Background()
 
 	genesis := testutil.NewBeaconBlock()
-	genesisRoot, err := stateutil.BlockRoot(genesis.Block)
+	genesisRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
 	require.NoError(t, db.SaveGenesisBlockRoot(ctx, genesisRoot))
 	require.NoError(t, db.SaveBlock(ctx, genesis))
@@ -240,17 +269,12 @@ func TestChainService_InitializeChainInfo(t *testing.T) {
 	headState := testutil.NewBeaconState()
 	require.NoError(t, headState.SetSlot(finalizedSlot))
 	require.NoError(t, headState.SetGenesisValidatorRoot(params.BeaconConfig().ZeroHash[:]))
-	headRoot, err := stateutil.BlockRoot(headBlock.Block)
+	headRoot, err := headBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
 	require.NoError(t, db.SaveState(ctx, headState, headRoot))
 	require.NoError(t, db.SaveState(ctx, headState, genesisRoot))
 	require.NoError(t, db.SaveBlock(ctx, headBlock))
-	if err := db.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{
-		Epoch: helpers.SlotToEpoch(finalizedSlot),
-		Root:  headRoot[:],
-	}); err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, db.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{Epoch: helpers.SlotToEpoch(finalizedSlot), Root: headRoot[:]}))
 	c := &Service{beaconDB: db, stateGen: stategen.New(db, sc)}
 	require.NoError(t, c.initializeChainInfo(ctx))
 	headBlk, err := c.HeadBlock(ctx)
@@ -268,6 +292,37 @@ func TestChainService_InitializeChainInfo(t *testing.T) {
 	assert.Equal(t, genesisRoot, c.genesisRoot, "Genesis block root incorrect")
 }
 
+func TestChainService_InitializeChainInfo_SetHeadAtGenesis(t *testing.T) {
+	db, sc := testDB.SetupDB(t)
+	ctx := context.Background()
+
+	genesis := testutil.NewBeaconBlock()
+	genesisRoot, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, db.SaveGenesisBlockRoot(ctx, genesisRoot))
+	require.NoError(t, db.SaveBlock(ctx, genesis))
+
+	finalizedSlot := params.BeaconConfig().SlotsPerEpoch*2 + 1
+	headBlock := testutil.NewBeaconBlock()
+	headBlock.Block.Slot = finalizedSlot
+	headBlock.Block.ParentRoot = bytesutil.PadTo(genesisRoot[:], 32)
+	headState := testutil.NewBeaconState()
+	require.NoError(t, headState.SetSlot(finalizedSlot))
+	require.NoError(t, headState.SetGenesisValidatorRoot(params.BeaconConfig().ZeroHash[:]))
+	headRoot, err := headBlock.Block.HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, db.SaveState(ctx, headState, headRoot))
+	require.NoError(t, db.SaveState(ctx, headState, genesisRoot))
+	require.NoError(t, db.SaveBlock(ctx, headBlock))
+	c := &Service{beaconDB: db, stateGen: stategen.New(db, sc)}
+	require.NoError(t, c.initializeChainInfo(ctx))
+	s, err := c.HeadState(ctx)
+	require.NoError(t, err)
+	assert.DeepEqual(t, headState.InnerStateUnsafe(), s.InnerStateUnsafe(), "Head state incorrect")
+	assert.Equal(t, genesisRoot, c.genesisRoot, "Genesis block root incorrect")
+	assert.DeepEqual(t, genesis, c.head.block)
+}
+
 func TestChainService_SaveHeadNoDB(t *testing.T) {
 	db, sc := testDB.SetupDB(t)
 	ctx := context.Background()
@@ -275,8 +330,9 @@ func TestChainService_SaveHeadNoDB(t *testing.T) {
 		beaconDB: db,
 		stateGen: stategen.New(db, sc),
 	}
-	b := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Slot: 1}}
-	r, err := ssz.HashTreeRoot(b)
+	b := testutil.NewBeaconBlock()
+	b.Block.Slot = 1
+	r, err := b.HashTreeRoot()
 	require.NoError(t, err)
 	newState := testutil.NewBeaconState()
 	require.NoError(t, s.stateGen.SaveState(ctx, r, newState))
@@ -294,30 +350,45 @@ func TestHasBlock_ForkChoiceAndDB(t *testing.T) {
 	db, _ := testDB.SetupDB(t)
 	s := &Service{
 		forkChoiceStore:  protoarray.New(0, 0, [32]byte{}),
-		finalizedCheckpt: &ethpb.Checkpoint{},
+		finalizedCheckpt: &ethpb.Checkpoint{Root: make([]byte, 32)},
 		beaconDB:         db,
 	}
-	block := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{}}}
-	r, err := stateutil.BlockRoot(block.Block)
-	require.NoError(t, err)
-	bs := &pb.BeaconState{FinalizedCheckpoint: &ethpb.Checkpoint{}, CurrentJustifiedCheckpoint: &ethpb.Checkpoint{}}
-	state, err := beaconstate.InitializeFromProto(bs)
+	block := testutil.NewBeaconBlock()
+	r, err := block.Block.HashTreeRoot()
 	require.NoError(t, err)
+	state := testutil.NewBeaconState()
 	require.NoError(t, s.insertBlockAndAttestationsToForkChoiceStore(ctx, block.Block, r, state))
 
 	assert.Equal(t, false, s.hasBlock(ctx, [32]byte{}), "Should not have block")
 	assert.Equal(t, true, s.hasBlock(ctx, r), "Should have block")
 }
 
+func TestServiceStop_SaveCachedBlocks(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	db, _ := testDB.SetupDB(t)
+	s := &Service{
+		ctx:            ctx,
+		cancel:         cancel,
+		beaconDB:       db,
+		initSyncBlocks: make(map[[32]byte]*ethpb.SignedBeaconBlock),
+	}
+	b := testutil.NewBeaconBlock()
+	r, err := b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	s.saveInitSyncBlock(r, b)
+	require.NoError(t, s.Stop())
+	require.Equal(t, true, s.beaconDB.HasBlock(ctx, r))
+}
+
 func BenchmarkHasBlockDB(b *testing.B) {
 	db, _ := testDB.SetupDB(b)
 	ctx := context.Background()
 	s := &Service{
 		beaconDB: db,
 	}
-	block := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{}}
+	block := testutil.NewBeaconBlock()
 	require.NoError(b, s.beaconDB.SaveBlock(ctx, block))
-	r, err := stateutil.BlockRoot(block.Block)
+	r, err := block.Block.HashTreeRoot()
 	require.NoError(b, err)
 
 	b.ResetTimer()
@@ -331,13 +402,13 @@ func BenchmarkHasBlockForkChoiceStore(b *testing.B) {
 	db, _ := testDB.SetupDB(b)
 	s := &Service{
 		forkChoiceStore:  protoarray.New(0, 0, [32]byte{}),
-		finalizedCheckpt: &ethpb.Checkpoint{},
+		finalizedCheckpt: &ethpb.Checkpoint{Root: make([]byte, 32)},
 		beaconDB:         db,
 	}
 	block := &ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{}}}
-	r, err := stateutil.BlockRoot(block.Block)
+	r, err := block.Block.HashTreeRoot()
 	require.NoError(b, err)
-	bs := &pb.BeaconState{FinalizedCheckpoint: &ethpb.Checkpoint{}, CurrentJustifiedCheckpoint: &ethpb.Checkpoint{}}
+	bs := &pb.BeaconState{FinalizedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)}, CurrentJustifiedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)}}
 	state, err := beaconstate.InitializeFromProto(bs)
 	require.NoError(b, err)
 	require.NoError(b, s.insertBlockAndAttestationsToForkChoiceStore(ctx, block.Block, r, state))

beacon-chain/blockchain/testing/BUILD.bazel

@@ -19,8 +19,8 @@ go_library(
         "//beacon-chain/db:go_default_library",
         "//beacon-chain/forkchoice/protoarray:go_default_library",
         "//beacon-chain/state:go_default_library",
-        "//beacon-chain/state/stateutil:go_default_library",
         "//proto/beacon/p2p/v1:go_default_library",
+        "//shared/bytesutil:go_default_library",
         "//shared/event:go_default_library",
         "//shared/params:go_default_library",
         "@com_github_pkg_errors//:go_default_library",

beacon-chain/blockchain/testing/mock.go

@@ -19,8 +19,8 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/db"
 	"github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/protoarray"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/event"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/sirupsen/logrus"
@@ -152,7 +152,7 @@ func (ms *ChainService) ReceiveBlockInitialSync(ctx context.Context, block *ethp
 		return err
 	}
 	ms.BlocksReceived = append(ms.BlocksReceived, block)
-	signingRoot, err := stateutil.BlockRoot(block.Block)
+	signingRoot, err := block.Block.HashTreeRoot()
 	if err != nil {
 		return err
 	}
@@ -180,7 +180,7 @@ func (ms *ChainService) ReceiveBlockBatch(ctx context.Context, blks []*ethpb.Sig
 			return err
 		}
 		ms.BlocksReceived = append(ms.BlocksReceived, block)
-		signingRoot, err := stateutil.BlockRoot(block.Block)
+		signingRoot, err := block.Block.HashTreeRoot()
 		if err != nil {
 			return err
 		}
@@ -208,7 +208,7 @@ func (ms *ChainService) ReceiveBlock(ctx context.Context, block *ethpb.SignedBea
 		return err
 	}
 	ms.BlocksReceived = append(ms.BlocksReceived, block)
-	signingRoot, err := stateutil.BlockRoot(block.Block)
+	signingRoot, err := block.Block.HashTreeRoot()
 	if err != nil {
 		return err
 	}
@@ -233,8 +233,10 @@ func (ms *ChainService) HeadSlot() uint64 {
 
 // HeadRoot mocks HeadRoot method in chain service.
 func (ms *ChainService) HeadRoot(ctx context.Context) ([]byte, error) {
-	return ms.Root, nil
-
+	if len(ms.Root) > 0 {
+		return ms.Root, nil
+	}
+	return make([]byte, 32), nil
 }
 
 // HeadBlock mocks HeadBlock method in chain service.
@@ -353,3 +355,38 @@ func (ms *ChainService) HeadGenesisValidatorRoot() [32]byte {
 func (ms *ChainService) VerifyBlkDescendant(ctx context.Context, root [32]byte) error {
 	return ms.VerifyBlkDescendantErr
 }
+
+// VerifyLmdFfgConsistency mocks VerifyLmdFfgConsistency and always returns nil.
+func (ms *ChainService) VerifyLmdFfgConsistency(ctx context.Context, att *ethpb.Attestation) error {
+	return nil
+}
+
+// AttestationCheckPtInfo mocks AttestationCheckPtInfo and always returns nil.
+func (ms *ChainService) AttestationCheckPtInfo(ctx context.Context, att *ethpb.Attestation) (*pb.CheckPtInfo, error) {
+	f := ms.State.Fork()
+	g := bytesutil.ToBytes32(ms.State.GenesisValidatorRoot())
+	seed, err := helpers.Seed(ms.State, helpers.SlotToEpoch(att.Data.Slot), params.BeaconConfig().DomainBeaconAttester)
+	if err != nil {
+		return nil, err
+	}
+	indices, err := helpers.ActiveValidatorIndices(ms.State, helpers.SlotToEpoch(att.Data.Slot))
+	if err != nil {
+		return nil, err
+	}
+	validators := ms.State.ValidatorsReadOnly()
+	pks := make([][]byte, len(validators))
+	for i := 0; i < len(pks); i++ {
+		pk := validators[i].PublicKey()
+		pks[i] = pk[:]
+	}
+
+	info := &pb.CheckPtInfo{
+		Fork:          f,
+		GenesisRoot:   g[:],
+		Seed:          seed[:],
+		ActiveIndices: indices,
+		PubKeys:       pks,
+	}
+
+	return info, nil
+}

beacon-chain/blockchain/weak_subjectivity_checks.go

@@ -0,0 +1,60 @@
+package blockchain
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/beacon-chain/db/filters"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
+	"github.com/prysmaticlabs/prysm/shared/params"
+)
+
+// VerifyWeakSubjectivityRoot verifies the weak subjectivity root in the service struct.
+// Reference design: https://github.com/ethereum/eth2.0-specs/blob/master/specs/phase0/weak-subjectivity.md#weak-subjectivity-sync-procedure
+func (s *Service) VerifyWeakSubjectivityRoot(ctx context.Context) error {
+	// TODO(7342): Remove the following to fully use weak subjectivity in production.
+	if len(s.wsRoot) == 0 || s.wsEpoch == 0 {
+		return nil
+	}
+
+	// Do nothing if the weak subjectivity has previously been verified,
+	// or weak subjectivity epoch is higher than last finalized epoch.
+	if s.wsVerified {
+		return nil
+	}
+	if s.wsEpoch > s.finalizedCheckpt.Epoch {
+		return nil
+	}
+
+	r := bytesutil.ToBytes32(s.wsRoot)
+	log.Infof("Performing weak subjectivity check for root %#x in epoch %d", r, s.wsEpoch)
+	// Save initial sync cached blocks to DB.
+	if err := s.beaconDB.SaveBlocks(ctx, s.getInitSyncBlocks()); err != nil {
+		return err
+	}
+	// A node should have the weak subjectivity block in the DB.
+	if !s.beaconDB.HasBlock(ctx, r) {
+		return fmt.Errorf("node does not have root in DB: %#x", r)
+	}
+
+	startSlot, err := helpers.StartSlot(s.wsEpoch)
+	if err != nil {
+		return err
+	}
+	// A node should have the weak subjectivity block corresponds to the correct epoch in the DB.
+	filter := filters.NewFilter().SetStartSlot(startSlot).SetEndSlot(startSlot + params.BeaconConfig().SlotsPerEpoch)
+	roots, err := s.beaconDB.BlockRoots(ctx, filter)
+	if err != nil {
+		return err
+	}
+	for _, root := range roots {
+		if r == root {
+			log.Info("Weak subjectivity check has passed")
+			s.wsVerified = true
+			return nil
+		}
+	}
+
+	return fmt.Errorf("node does not have root in db corresponding to epoch: %#x %d", r, s.wsEpoch)
+}

beacon-chain/blockchain/weak_subjectivity_checks_test.go

@@ -0,0 +1,85 @@
+package blockchain
+
+import (
+	"context"
+	"testing"
+
+	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
+	"github.com/prysmaticlabs/prysm/shared/testutil"
+	"github.com/prysmaticlabs/prysm/shared/testutil/require"
+)
+
+func TestService_VerifyWeakSubjectivityRoot(t *testing.T) {
+	db, _ := testDB.SetupDB(t)
+
+	b := testutil.NewBeaconBlock()
+	b.Block.Slot = 32
+	require.NoError(t, db.SaveBlock(context.Background(), b))
+	r, err := b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	tests := []struct {
+		wsVerified     bool
+		wantErr        bool
+		wsRoot         [32]byte
+		wsEpoch        uint64
+		finalizedEpoch uint64
+		errString      string
+		name           string
+	}{
+		{
+			name:    "nil root and epoch",
+			wantErr: false,
+		},
+		{
+			name:           "already verified",
+			wsEpoch:        2,
+			finalizedEpoch: 2,
+			wsVerified:     true,
+			wantErr:        false,
+		},
+		{
+			name:           "not yet to verify, ws epoch higher than finalized epoch",
+			wsEpoch:        2,
+			finalizedEpoch: 1,
+			wantErr:        false,
+		},
+		{
+			name:           "can't find the block in DB",
+			wsEpoch:        1,
+			wsRoot:         [32]byte{'a'},
+			finalizedEpoch: 3,
+			wantErr:        true,
+			errString:      "node does not have root in DB",
+		},
+		{
+			name:           "can't find the block corresponds to ws epoch in DB",
+			wsEpoch:        2,
+			wsRoot:         r, // Root belongs in epoch 1.
+			finalizedEpoch: 3,
+			wantErr:        true,
+			errString:      "node does not have root in db corresponding to epoch",
+		},
+		{
+			name:           "can verify and pass",
+			wsEpoch:        1,
+			wsRoot:         r,
+			finalizedEpoch: 3,
+			wantErr:        false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			s := &Service{
+				beaconDB:         db,
+				wsRoot:           tt.wsRoot[:],
+				wsEpoch:          tt.wsEpoch,
+				wsVerified:       tt.wsVerified,
+				finalizedCheckpt: &ethpb.Checkpoint{Epoch: tt.finalizedEpoch},
+			}
+			if err := s.VerifyWeakSubjectivityRoot(context.Background()); (err != nil) != tt.wantErr {
+				require.ErrorContains(t, tt.errString, err)
+			}
+		})
+	}
+}

beacon-chain/cache/BUILD.bazel

@@ -1,19 +1,31 @@
 load("@prysm//tools/go:def.bzl", "go_library")
 load("@io_bazel_rules_go//go:def.bzl", "go_test")
 
+# gazelle:ignore committee_disabled.go
+# gazelle:ignore proposer_indices_disabled.go
 go_library(
     name = "go_default_library",
     srcs = [
         "attestation_data.go",
         "checkpoint_state.go",
-        "committee.go",
+        "committees.go",
         "common.go",
         "doc.go",
         "hot_state_cache.go",
         "skip_slot_cache.go",
         "state_summary.go",
         "subnet_ids.go",
-    ],
+        "proposer_indices_type.go",
+    ] + select({
+        "//fuzz:fuzzing_enabled": [
+            "committee_disabled.go",
+            "proposer_indices_disabled.go"
+        ],
+        "//conditions:default": [
+            "committee.go",
+            "proposer_indices.go",
+        ],
+    }),
     importpath = "github.com/prysmaticlabs/prysm/beacon-chain/cache",
     visibility = [
         "//beacon-chain:__subpackages__",
@@ -49,6 +61,7 @@ go_test(
         "hot_state_cache_test.go",
         "skip_slot_cache_test.go",
         "subnet_ids_test.go",
+        "proposer_indices_test.go"
     ],
     embed = [":go_default_library"],
     deps = [

beacon-chain/cache/attestation_data_test.go

@@ -26,7 +26,7 @@ func TestAttestationCache_RoundTrip(t *testing.T) {
 	assert.NoError(t, c.MarkInProgress(req))
 
 	res := &ethpb.AttestationData{
-		Target: &ethpb.Checkpoint{Epoch: 5},
+		Target: &ethpb.Checkpoint{Epoch: 5, Root: make([]byte, 32)},
 	}
 
 	assert.NoError(t, c.Put(ctx, req, res))

beacon-chain/cache/checkpoint_state_test.go

@@ -61,7 +61,7 @@ func TestCheckpointStateCache_MaxSize(t *testing.T) {
 
 	for i := uint64(0); i < uint64(maxCheckpointStateSize+100); i++ {
 		require.NoError(t, st.SetSlot(i))
-		require.NoError(t, c.AddCheckpointState(&ethpb.Checkpoint{Epoch: i}, st))
+		require.NoError(t, c.AddCheckpointState(&ethpb.Checkpoint{Epoch: i, Root: make([]byte, 32)}, st))
 	}
 
 	assert.Equal(t, maxCheckpointStateSize, len(c.cache.Keys()))

beacon-chain/cache/committee.go

@@ -1,3 +1,5 @@
+// +build !libfuzzer
+
 package cache
 
 import (
@@ -12,10 +14,6 @@ import (
 )
 
 var (
-	// ErrNotCommittee will be returned when a cache object is not a pointer to
-	// a Committee struct.
-	ErrNotCommittee = errors.New("object is not a committee struct")
-
 	// maxCommitteesCacheSize defines the max number of shuffled committees on per randao basis can cache.
 	// Due to reorgs and long finality, it's good to keep the old cache around for quickly switch over.
 	maxCommitteesCacheSize = uint64(32)
@@ -32,15 +30,6 @@ var (
 	})
 )
 
-// Committees defines the shuffled committees seed.
-type Committees struct {
-	CommitteeCount  uint64
-	Seed            [32]byte
-	ShuffledIndices []uint64
-	SortedIndices   []uint64
-	ProposerIndices []uint64
-}
-
 // CommitteeCache is a struct with 1 queue for looking up shuffled indices list by seed.
 type CommitteeCache struct {
 	CommitteeCache *cache.FIFO
@@ -115,35 +104,6 @@ func (c *CommitteeCache) AddCommitteeShuffledList(committees *Committees) error
 	return nil
 }
 
-// AddProposerIndicesList updates the committee shuffled list with proposer indices.
-func (c *CommitteeCache) AddProposerIndicesList(seed [32]byte, indices []uint64) error {
-	c.lock.Lock()
-	defer c.lock.Unlock()
-
-	obj, exists, err := c.CommitteeCache.GetByKey(key(seed))
-	if err != nil {
-		return err
-	}
-	if !exists {
-		committees := &Committees{ProposerIndices: indices}
-		if err := c.CommitteeCache.Add(committees); err != nil {
-			return err
-		}
-	} else {
-		committees, ok := obj.(*Committees)
-		if !ok {
-			return ErrNotCommittee
-		}
-		committees.ProposerIndices = indices
-		if err := c.CommitteeCache.Add(committees); err != nil {
-			return err
-		}
-	}
-
-	trim(c.CommitteeCache, maxCommitteesCacheSize)
-	return nil
-}
-
 // ActiveIndices returns the active indices of a given seed stored in cache.
 func (c *CommitteeCache) ActiveIndices(seed [32]byte) ([]uint64, error) {
 	c.lock.RLock()
@@ -192,28 +152,10 @@ func (c *CommitteeCache) ActiveIndicesCount(seed [32]byte) (int, error) {
 	return len(item.SortedIndices), nil
 }
 
-// ProposerIndices returns the proposer indices of a given seed.
-func (c *CommitteeCache) ProposerIndices(seed [32]byte) ([]uint64, error) {
-	c.lock.RLock()
-	defer c.lock.RUnlock()
-	obj, exists, err := c.CommitteeCache.GetByKey(key(seed))
-	if err != nil {
-		return nil, err
-	}
-
-	if exists {
-		CommitteeCacheHit.Inc()
-	} else {
-		CommitteeCacheMiss.Inc()
-		return nil, nil
-	}
-
-	item, ok := obj.(*Committees)
-	if !ok {
-		return nil, ErrNotCommittee
-	}
-
-	return item.ProposerIndices, nil
+// HasEntry returns true if the committee cache has a value.
+func (c *CommitteeCache) HasEntry(seed string) bool {
+	_, ok, err := c.CommitteeCache.GetByKey(seed)
+	return err == nil && ok
 }
 
 func startEndIndices(c *Committees, index uint64) (uint64, uint64) {

beacon-chain/cache/committee_disabled.go

@@ -0,0 +1,50 @@
+// +build libfuzzer
+
+// This file is used in fuzzer builds to bypass global committee caches.
+package cache
+
+// FakeCommitteeCache is a struct with 1 queue for looking up shuffled indices list by seed.
+type FakeCommitteeCache struct {
+}
+
+// NewCommitteesCache creates a new committee cache for storing/accessing shuffled indices of a committee.
+func NewCommitteesCache() *FakeCommitteeCache {
+	return &FakeCommitteeCache{}
+}
+
+// Committee fetches the shuffled indices by slot and committee index. Every list of indices
+// represent one committee. Returns true if the list exists with slot and committee index. Otherwise returns false, nil.
+func (c *FakeCommitteeCache) Committee(slot uint64, seed [32]byte, index uint64) ([]uint64, error) {
+	return nil, nil
+}
+
+// AddCommitteeShuffledList adds Committee shuffled list object to the cache. T
+// his method also trims the least recently list if the cache size has ready the max cache size limit.
+func (c *FakeCommitteeCache) AddCommitteeShuffledList(committees *Committees) error {
+	return nil
+}
+
+// AddProposerIndicesList updates the committee shuffled list with proposer indices.
+func (c *FakeCommitteeCache) AddProposerIndicesList(seed [32]byte, indices []uint64) error {
+	return nil
+}
+
+// ActiveIndices returns the active indices of a given seed stored in cache.
+func (c *FakeCommitteeCache) ActiveIndices(seed [32]byte) ([]uint64, error) {
+	return nil, nil
+}
+
+// ActiveIndicesCount returns the active indices count of a given seed stored in cache.
+func (c *FakeCommitteeCache) ActiveIndicesCount(seed [32]byte) (int, error) {
+	return 0, nil
+}
+
+// ProposerIndices returns the proposer indices of a given seed.
+func (c *FakeCommitteeCache) ProposerIndices(seed [32]byte) ([]uint64, error) {
+	return nil, nil
+}
+
+// HasEntry returns true if the committee cache has a value.
+func (c *FakeCommitteeCache) HasEntry(string) bool {
+	return false
+}

beacon-chain/cache/committee_test.go

@@ -87,37 +87,6 @@ func TestCommitteeCache_ActiveCount(t *testing.T) {
 	assert.Equal(t, len(item.SortedIndices), count)
 }
 
-func TestCommitteeCache_AddProposerIndicesList(t *testing.T) {
-	cache := NewCommitteesCache()
-
-	seed := [32]byte{'A'}
-	indices := []uint64{1, 2, 3, 4, 5}
-	indices, err := cache.ProposerIndices(seed)
-	require.NoError(t, err)
-	if indices != nil {
-		t.Error("Expected committee count not to exist in empty cache")
-	}
-	require.NoError(t, cache.AddProposerIndicesList(seed, indices))
-
-	received, err := cache.ProposerIndices(seed)
-	require.NoError(t, err)
-	assert.DeepEqual(t, received, indices)
-
-	item := &Committees{Seed: [32]byte{'B'}, SortedIndices: []uint64{1, 2, 3, 4, 5, 6}}
-	require.NoError(t, cache.AddCommitteeShuffledList(item))
-
-	indices, err = cache.ProposerIndices(item.Seed)
-	require.NoError(t, err)
-	if indices != nil {
-		t.Error("Expected committee count not to exist in empty cache")
-	}
-	require.NoError(t, cache.AddProposerIndicesList(item.Seed, indices))
-
-	received, err = cache.ProposerIndices(item.Seed)
-	require.NoError(t, err)
-	assert.DeepEqual(t, received, indices)
-}
-
 func TestCommitteeCache_CanRotate(t *testing.T) {
 	cache := NewCommitteesCache()
 
@@ -152,7 +121,6 @@ func TestCommitteeCacheOutOfRange(t *testing.T) {
 		Seed:            seed,
 		ShuffledIndices: []uint64{0},
 		SortedIndices:   []uint64{},
-		ProposerIndices: []uint64{},
 	})
 	require.NoError(t, err)
 

beacon-chain/cache/committees.go

@@ -0,0 +1,15 @@
+package cache
+
+import "errors"
+
+// ErrNotCommittee will be returned when a cache object is not a pointer to
+// a Committee struct.
+var ErrNotCommittee = errors.New("object is not a committee struct")
+
+// Committees defines the shuffled committees seed.
+type Committees struct {
+	CommitteeCount  uint64
+	Seed            [32]byte
+	ShuffledIndices []uint64
+	SortedIndices   []uint64
+}

beacon-chain/cache/depositcache/BUILD.bazel

@@ -18,7 +18,6 @@ go_library(
         "@com_github_prometheus_client_golang//prometheus:go_default_library",
         "@com_github_prometheus_client_golang//prometheus/promauto:go_default_library",
         "@com_github_prysmaticlabs_ethereumapis//eth/v1alpha1:go_default_library",
-        "@com_github_prysmaticlabs_go_ssz//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
         "@io_opencensus_go//trace:go_default_library",
     ],
@@ -40,7 +39,6 @@ go_test(
         "//shared/trieutil:go_default_library",
         "@com_github_gogo_protobuf//proto:go_default_library",
         "@com_github_prysmaticlabs_ethereumapis//eth/v1alpha1:go_default_library",
-        "@com_github_prysmaticlabs_go_ssz//:go_default_library",
         "@com_github_sirupsen_logrus//hooks/test:go_default_library",
     ],
 )

beacon-chain/cache/depositcache/deposits_cache.go

@@ -15,7 +15,6 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/go-ssz"
 	dbpb "github.com/prysmaticlabs/prysm/proto/beacon/db"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
@@ -59,8 +58,8 @@ type DepositCache struct {
 	chainStartPubkeys  map[string]bool
 }
 
-// NewDepositCache instantiates a new deposit cache
-func NewDepositCache() (*DepositCache, error) {
+// New instantiates a new deposit cache
+func New() (*DepositCache, error) {
 	finalizedDepositsTrie, err := trieutil.NewTrie(int(params.BeaconConfig().DepositContractTreeDepth))
 	if err != nil {
 		return nil, err
@@ -128,7 +127,7 @@ func (dc *DepositCache) InsertFinalizedDeposits(ctx context.Context, eth1Deposit
 		if d.Index > eth1DepositIndex {
 			break
 		}
-		depHash, err := ssz.HashTreeRoot(d.Deposit.Data)
+		depHash, err := d.Deposit.Data.HashTreeRoot()
 		if err != nil {
 			log.WithError(err).Error("Could not hash deposit data. Finalized deposit cache not updated.")
 			return

beacon-chain/cache/depositcache/deposits_cache_test.go

@@ -8,7 +8,6 @@ import (
 	"testing"
 
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/go-ssz"
 	dbpb "github.com/prysmaticlabs/prysm/proto/beacon/db"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
@@ -20,11 +19,11 @@ import (
 
 const nilDepositErr = "Ignoring nil deposit insertion"
 
-var _ = DepositFetcher(&DepositCache{})
+var _ DepositFetcher = (*DepositCache)(nil)
 
 func TestInsertDeposit_LogsOnNilDepositInsertion(t *testing.T) {
 	hook := logTest.NewGlobal()
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	dc.InsertDeposit(context.Background(), nil, 1, 0, [32]byte{})
@@ -34,7 +33,7 @@ func TestInsertDeposit_LogsOnNilDepositInsertion(t *testing.T) {
 }
 
 func TestInsertDeposit_MaintainsSortedOrderByIndex(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	insertions := []struct {
@@ -76,7 +75,7 @@ func TestInsertDeposit_MaintainsSortedOrderByIndex(t *testing.T) {
 }
 
 func TestAllDeposits_ReturnsAllDeposits(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	deposits := []*dbpb.DepositContainer{
@@ -116,7 +115,7 @@ func TestAllDeposits_ReturnsAllDeposits(t *testing.T) {
 }
 
 func TestAllDeposits_FiltersDepositUpToAndIncludingBlockNumber(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	deposits := []*dbpb.DepositContainer{
@@ -156,38 +155,80 @@ func TestAllDeposits_FiltersDepositUpToAndIncludingBlockNumber(t *testing.T) {
 }
 
 func TestDepositsNumberAndRootAtHeight_ReturnsAppropriateCountAndRoot(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	dc.deposits = []*dbpb.DepositContainer{
 		{
 			Eth1BlockHeight: 10,
-			Deposit:         &ethpb.Deposit{},
+			Deposit: &ethpb.Deposit{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             make([]byte, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
+				},
+			},
 		},
 		{
 			Eth1BlockHeight: 10,
-			Deposit:         &ethpb.Deposit{},
+			Deposit: &ethpb.Deposit{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             make([]byte, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
+				},
+			},
 		},
 		{
 			Eth1BlockHeight: 10,
-			Deposit:         &ethpb.Deposit{},
+			Deposit: &ethpb.Deposit{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             make([]byte, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
+				},
+			},
 		},
 		{
 			Eth1BlockHeight: 10,
-			Deposit:         &ethpb.Deposit{},
+			Deposit: &ethpb.Deposit{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             make([]byte, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
+				},
+			},
 		},
 		{
 			Eth1BlockHeight: 11,
-			Deposit:         &ethpb.Deposit{},
-			DepositRoot:     []byte("root"),
+			Deposit: &ethpb.Deposit{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             make([]byte, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
+				},
+			},
+			DepositRoot: bytesutil.PadTo([]byte("root"), 32),
 		},
 		{
 			Eth1BlockHeight: 12,
-			Deposit:         &ethpb.Deposit{},
+			Deposit: &ethpb.Deposit{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             make([]byte, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
+				},
+			},
 		},
 		{
 			Eth1BlockHeight: 12,
-			Deposit:         &ethpb.Deposit{},
+			Deposit: &ethpb.Deposit{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             make([]byte, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
+				},
+			},
 		},
 	}
 
@@ -197,19 +238,31 @@ func TestDepositsNumberAndRootAtHeight_ReturnsAppropriateCountAndRoot(t *testing
 }
 
 func TestDepositsNumberAndRootAtHeight_ReturnsEmptyTrieIfBlockHeightLessThanOldestDeposit(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	dc.deposits = []*dbpb.DepositContainer{
 		{
 			Eth1BlockHeight: 10,
-			Deposit:         &ethpb.Deposit{},
-			DepositRoot:     []byte("root"),
+			Deposit: &ethpb.Deposit{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             make([]byte, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
+				},
+			},
+			DepositRoot: bytesutil.PadTo([]byte("root"), 32),
 		},
 		{
 			Eth1BlockHeight: 11,
-			Deposit:         &ethpb.Deposit{},
-			DepositRoot:     []byte("root"),
+			Deposit: &ethpb.Deposit{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             make([]byte, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
+				},
+			},
+			DepositRoot: bytesutil.PadTo([]byte("root"), 32),
 		},
 	}
 
@@ -219,7 +272,7 @@ func TestDepositsNumberAndRootAtHeight_ReturnsEmptyTrieIfBlockHeightLessThanOlde
 }
 
 func TestDepositByPubkey_ReturnsFirstMatchingDeposit(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	dc.deposits = []*dbpb.DepositContainer{
@@ -227,7 +280,9 @@ func TestDepositByPubkey_ReturnsFirstMatchingDeposit(t *testing.T) {
 			Eth1BlockHeight: 9,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte("pk0"),
+					PublicKey:             bytesutil.PadTo([]byte("pk0"), 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 		},
@@ -235,7 +290,9 @@ func TestDepositByPubkey_ReturnsFirstMatchingDeposit(t *testing.T) {
 			Eth1BlockHeight: 10,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte("pk1"),
+					PublicKey:             bytesutil.PadTo([]byte("pk1"), 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 		},
@@ -243,7 +300,9 @@ func TestDepositByPubkey_ReturnsFirstMatchingDeposit(t *testing.T) {
 			Eth1BlockHeight: 11,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte("pk1"),
+					PublicKey:             bytesutil.PadTo([]byte("pk1"), 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 		},
@@ -251,15 +310,18 @@ func TestDepositByPubkey_ReturnsFirstMatchingDeposit(t *testing.T) {
 			Eth1BlockHeight: 12,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte("pk2"),
+					PublicKey:             bytesutil.PadTo([]byte("pk2"), 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 		},
 	}
 
-	dep, blkNum := dc.DepositByPubkey(context.Background(), []byte("pk1"))
+	pk1 := bytesutil.PadTo([]byte("pk1"), 48)
+	dep, blkNum := dc.DepositByPubkey(context.Background(), pk1)
 
-	if !bytes.Equal(dep.Data.PublicKey, []byte("pk1")) {
+	if dep == nil || !bytes.Equal(dep.Data.PublicKey, pk1) {
 		t.Error("Returned wrong deposit")
 	}
 	assert.Equal(t, 0, blkNum.Cmp(big.NewInt(10)),
@@ -267,14 +329,16 @@ func TestDepositByPubkey_ReturnsFirstMatchingDeposit(t *testing.T) {
 }
 
 func TestFinalizedDeposits_DepositsCachedCorrectly(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	finalizedDeposits := []*dbpb.DepositContainer{
 		{
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{0},
+					PublicKey:             bytesutil.PadTo([]byte{0}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 0,
@@ -282,7 +346,9 @@ func TestFinalizedDeposits_DepositsCachedCorrectly(t *testing.T) {
 		{
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{1},
+					PublicKey:             bytesutil.PadTo([]byte{1}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 1,
@@ -290,7 +356,9 @@ func TestFinalizedDeposits_DepositsCachedCorrectly(t *testing.T) {
 		{
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{2},
+					PublicKey:             bytesutil.PadTo([]byte{2}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 2,
@@ -299,7 +367,9 @@ func TestFinalizedDeposits_DepositsCachedCorrectly(t *testing.T) {
 	dc.deposits = append(finalizedDeposits, &dbpb.DepositContainer{
 		Deposit: &ethpb.Deposit{
 			Data: &ethpb.Deposit_Data{
-				PublicKey: []byte{3},
+				PublicKey:             bytesutil.PadTo([]byte{3}, 48),
+				WithdrawalCredentials: make([]byte, 32),
+				Signature:             make([]byte, 96),
 			},
 		},
 		Index: 3,
@@ -313,7 +383,7 @@ func TestFinalizedDeposits_DepositsCachedCorrectly(t *testing.T) {
 
 	var deps [][]byte
 	for _, d := range finalizedDeposits {
-		hash, err := ssz.HashTreeRoot(d.Deposit.Data)
+		hash, err := d.Deposit.Data.HashTreeRoot()
 		require.NoError(t, err, "Could not hash deposit data")
 		deps = append(deps, hash[:])
 	}
@@ -323,14 +393,16 @@ func TestFinalizedDeposits_DepositsCachedCorrectly(t *testing.T) {
 }
 
 func TestFinalizedDeposits_UtilizesPreviouslyCachedDeposits(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	oldFinalizedDeposits := []*dbpb.DepositContainer{
 		{
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{0},
+					PublicKey:             bytesutil.PadTo([]byte{0}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 0,
@@ -338,7 +410,9 @@ func TestFinalizedDeposits_UtilizesPreviouslyCachedDeposits(t *testing.T) {
 		{
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{1},
+					PublicKey:             bytesutil.PadTo([]byte{1}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 1,
@@ -347,7 +421,9 @@ func TestFinalizedDeposits_UtilizesPreviouslyCachedDeposits(t *testing.T) {
 	newFinalizedDeposit := dbpb.DepositContainer{
 		Deposit: &ethpb.Deposit{
 			Data: &ethpb.Deposit_Data{
-				PublicKey: []byte{2},
+				PublicKey:             bytesutil.PadTo([]byte{2}, 48),
+				WithdrawalCredentials: make([]byte, 32),
+				Signature:             make([]byte, 96),
 			},
 		},
 		Index: 2,
@@ -365,7 +441,7 @@ func TestFinalizedDeposits_UtilizesPreviouslyCachedDeposits(t *testing.T) {
 
 	var deps [][]byte
 	for _, d := range append(oldFinalizedDeposits, &newFinalizedDeposit) {
-		hash, err := ssz.HashTreeRoot(d.Deposit.Data)
+		hash, err := d.Deposit.Data.HashTreeRoot()
 		require.NoError(t, err, "Could not hash deposit data")
 		deps = append(deps, hash[:])
 	}
@@ -375,7 +451,7 @@ func TestFinalizedDeposits_UtilizesPreviouslyCachedDeposits(t *testing.T) {
 }
 
 func TestFinalizedDeposits_InitializedCorrectly(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	finalizedDeposits := dc.finalizedDeposits
@@ -385,7 +461,7 @@ func TestFinalizedDeposits_InitializedCorrectly(t *testing.T) {
 }
 
 func TestNonFinalizedDeposits_ReturnsAllNonFinalizedDeposits(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	finalizedDeposits := []*dbpb.DepositContainer{
@@ -393,7 +469,9 @@ func TestNonFinalizedDeposits_ReturnsAllNonFinalizedDeposits(t *testing.T) {
 			Eth1BlockHeight: 10,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{0},
+					PublicKey:             bytesutil.PadTo([]byte{0}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 0,
@@ -402,7 +480,9 @@ func TestNonFinalizedDeposits_ReturnsAllNonFinalizedDeposits(t *testing.T) {
 			Eth1BlockHeight: 10,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{1},
+					PublicKey:             bytesutil.PadTo([]byte{1}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 1,
@@ -413,7 +493,9 @@ func TestNonFinalizedDeposits_ReturnsAllNonFinalizedDeposits(t *testing.T) {
 			Eth1BlockHeight: 10,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{2},
+					PublicKey:             bytesutil.PadTo([]byte{2}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 2,
@@ -422,7 +504,9 @@ func TestNonFinalizedDeposits_ReturnsAllNonFinalizedDeposits(t *testing.T) {
 			Eth1BlockHeight: 11,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{3},
+					PublicKey:             bytesutil.PadTo([]byte{3}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 3,
@@ -434,7 +518,7 @@ func TestNonFinalizedDeposits_ReturnsAllNonFinalizedDeposits(t *testing.T) {
 }
 
 func TestNonFinalizedDeposits_ReturnsNonFinalizedDepositsUpToBlockNumber(t *testing.T) {
-	dc, err := NewDepositCache()
+	dc, err := New()
 	require.NoError(t, err)
 
 	finalizedDeposits := []*dbpb.DepositContainer{
@@ -442,7 +526,9 @@ func TestNonFinalizedDeposits_ReturnsNonFinalizedDepositsUpToBlockNumber(t *test
 			Eth1BlockHeight: 10,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{0},
+					PublicKey:             bytesutil.PadTo([]byte{0}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 0,
@@ -451,7 +537,9 @@ func TestNonFinalizedDeposits_ReturnsNonFinalizedDepositsUpToBlockNumber(t *test
 			Eth1BlockHeight: 10,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{1},
+					PublicKey:             bytesutil.PadTo([]byte{1}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 1,
@@ -462,7 +550,9 @@ func TestNonFinalizedDeposits_ReturnsNonFinalizedDepositsUpToBlockNumber(t *test
 			Eth1BlockHeight: 10,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{2},
+					PublicKey:             bytesutil.PadTo([]byte{2}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 2,
@@ -471,7 +561,9 @@ func TestNonFinalizedDeposits_ReturnsNonFinalizedDepositsUpToBlockNumber(t *test
 			Eth1BlockHeight: 11,
 			Deposit: &ethpb.Deposit{
 				Data: &ethpb.Deposit_Data{
-					PublicKey: []byte{3},
+					PublicKey:             bytesutil.PadTo([]byte{3}, 48),
+					WithdrawalCredentials: make([]byte, 32),
+					Signature:             make([]byte, 96),
 				},
 			},
 			Index: 3,

beacon-chain/cache/depositcache/pending_deposits_test.go

@@ -13,7 +13,7 @@ import (
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 )
 
-var _ = PendingDepositsFetcher(&DepositCache{})
+var _ PendingDepositsFetcher = (*DepositCache)(nil)
 
 func TestInsertPendingDeposit_OK(t *testing.T) {
 	dc := DepositCache{}
@@ -29,14 +29,28 @@ func TestInsertPendingDeposit_ignoresNilDeposit(t *testing.T) {
 	assert.Equal(t, 0, len(dc.pendingDeposits))
 }
 
+func makeDepositProof() [][]byte {
+	proof := make([][]byte, int(params.BeaconConfig().DepositContractTreeDepth)+1)
+	for i := range proof {
+		proof[i] = make([]byte, 32)
+	}
+	return proof
+}
+
 func TestRemovePendingDeposit_OK(t *testing.T) {
 	db := DepositCache{}
-	proof1 := make([][]byte, int(params.BeaconConfig().DepositContractTreeDepth)+1)
+	proof1 := makeDepositProof()
 	proof1[0] = bytesutil.PadTo([]byte{'A'}, 32)
-	proof2 := make([][]byte, int(params.BeaconConfig().DepositContractTreeDepth)+1)
+	proof2 := makeDepositProof()
 	proof2[0] = bytesutil.PadTo([]byte{'A'}, 32)
-	depToRemove := &ethpb.Deposit{Proof: proof1}
-	otherDep := &ethpb.Deposit{Proof: proof2}
+	data := &ethpb.Deposit_Data{
+		PublicKey:             make([]byte, 48),
+		WithdrawalCredentials: make([]byte, 32),
+		Amount:                0,
+		Signature:             make([]byte, 96),
+	}
+	depToRemove := &ethpb.Deposit{Proof: proof1, Data: data}
+	otherDep := &ethpb.Deposit{Proof: proof2, Data: data}
 	db.pendingDeposits = []*dbpb.DepositContainer{
 		{Deposit: depToRemove, Index: 1},
 		{Deposit: otherDep, Index: 5},
@@ -57,9 +71,15 @@ func TestRemovePendingDeposit_IgnoresNilDeposit(t *testing.T) {
 
 func TestPendingDeposit_RoundTrip(t *testing.T) {
 	dc := DepositCache{}
-	proof := make([][]byte, int(params.BeaconConfig().DepositContractTreeDepth)+1)
+	proof := makeDepositProof()
 	proof[0] = bytesutil.PadTo([]byte{'A'}, 32)
-	dep := &ethpb.Deposit{Proof: proof}
+	data := &ethpb.Deposit_Data{
+		PublicKey:             make([]byte, 48),
+		WithdrawalCredentials: make([]byte, 32),
+		Amount:                0,
+		Signature:             make([]byte, 96),
+	}
+	dep := &ethpb.Deposit{Proof: proof, Data: data}
 	dc.InsertPendingDeposit(context.Background(), dep, 111, 100, [32]byte{})
 	dc.RemovePendingDeposit(context.Background(), dep)
 	assert.Equal(t, 0, len(dc.pendingDeposits), "Failed to insert & delete a pending deposit")

beacon-chain/cache/feature_flag_test.go

@@ -10,5 +10,8 @@ import (
 func TestMain(m *testing.M) {
 	resetCfg := featureconfig.InitWithReset(&featureconfig.Flags{EnableEth1DataVoteCache: true})
 	defer resetCfg()
-	os.Exit(m.Run())
+	code := m.Run()
+	// os.Exit will prevent defer from being called
+	resetCfg()
+	os.Exit(code)
 }

beacon-chain/cache/proposer_indices.go

@@ -0,0 +1,88 @@
+// +build !libfuzzer
+
+package cache
+
+import (
+	"sync"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+	"k8s.io/client-go/tools/cache"
+)
+
+var (
+	// maxProposerIndicesCacheSize defines the max number of proposer indices on per block root basis can cache.
+	// Due to reorgs and long finality, it's good to keep the old cache around for quickly switch over.
+	maxProposerIndicesCacheSize = uint64(8)
+
+	// ProposerIndicesCacheMiss tracks the number of proposerIndices requests that aren't present in the cache.
+	ProposerIndicesCacheMiss = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "proposer_indices_cache_miss",
+		Help: "The number of proposer indices requests that aren't present in the cache.",
+	})
+	// ProposerIndicesCacheHit tracks the number of proposerIndices requests that are in the cache.
+	ProposerIndicesCacheHit = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "proposer_indices_cache_hit",
+		Help: "The number of proposer indices requests that are present in the cache.",
+	})
+)
+
+// ProposerIndicesCache is a struct with 1 queue for looking up proposer indices by root.
+type ProposerIndicesCache struct {
+	ProposerIndicesCache *cache.FIFO
+	lock                 sync.RWMutex
+}
+
+// proposerIndicesKeyFn takes the block root as the key to retrieve proposer indices in a given epoch.
+func proposerIndicesKeyFn(obj interface{}) (string, error) {
+	info, ok := obj.(*ProposerIndices)
+	if !ok {
+		return "", ErrNotProposerIndices
+	}
+
+	return key(info.BlockRoot), nil
+}
+
+// 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),
+	}
+}
+
+// AddProposerIndices adds ProposerIndices object to the cache.
+// This method also trims the least recently list if the cache size has ready the max cache size limit.
+func (c *ProposerIndicesCache) AddProposerIndices(p *ProposerIndices) error {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+
+	if err := c.ProposerIndicesCache.AddIfNotPresent(p); err != nil {
+		return err
+	}
+	trim(c.ProposerIndicesCache, maxProposerIndicesCacheSize)
+	return nil
+}
+
+// ProposerIndices returns the proposer indices of a block root seed.
+func (c *ProposerIndicesCache) ProposerIndices(r [32]byte) ([]uint64, error) {
+	c.lock.RLock()
+	defer c.lock.RUnlock()
+	obj, exists, err := c.ProposerIndicesCache.GetByKey(key(r))
+	if err != nil {
+		return nil, err
+	}
+
+	if exists {
+		ProposerIndicesCacheHit.Inc()
+	} else {
+		ProposerIndicesCacheMiss.Inc()
+		return nil, nil
+	}
+
+	item, ok := obj.(*ProposerIndices)
+	if !ok {
+		return nil, ErrNotProposerIndices
+	}
+
+	return item.ProposerIndices, nil
+}

beacon-chain/cache/proposer_indices_disabled.go

@@ -0,0 +1,24 @@
+// +build libfuzzer
+
+// This file is used in fuzzer builds to bypass proposer indices caches.
+package cache
+
+// FakeProposerIndicesCache is a struct with 1 queue for looking up proposer indices by root.
+type FakeProposerIndicesCache struct {
+}
+
+// NewProposerIndicesCache creates a new proposer indices cache for storing/accessing proposer index assignments of an epoch.
+func NewProposerIndicesCache() *FakeProposerIndicesCache {
+	return &FakeProposerIndicesCache{}
+}
+
+// AddProposerIndices adds ProposerIndices object to the cache.
+// This method also trims the least recently list if the cache size has ready the max cache size limit.
+func (c *FakeProposerIndicesCache) AddProposerIndices(p *ProposerIndices) error {
+	return nil
+}
+
+// ProposerIndices returns the proposer indices of a block root seed.
+func (c *FakeProposerIndicesCache) ProposerIndices(r [32]byte) ([]uint64, error) {
+	return nil, nil
+}

beacon-chain/cache/proposer_indices_test.go

@@ -0,0 +1,63 @@
+package cache
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
+	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
+	"github.com/prysmaticlabs/prysm/shared/testutil/require"
+)
+
+func TestProposerKeyFn_OK(t *testing.T) {
+	item := &ProposerIndices{
+		BlockRoot:       [32]byte{'A'},
+		ProposerIndices: []uint64{1, 2, 3, 4, 5},
+	}
+
+	k, err := proposerIndicesKeyFn(item)
+	require.NoError(t, err)
+	assert.Equal(t, key(item.BlockRoot), k)
+}
+
+func TestProposerKeyFn_InvalidObj(t *testing.T) {
+	_, err := proposerIndicesKeyFn("bad")
+	assert.Equal(t, ErrNotProposerIndices, err)
+}
+
+func TestProposerCache_AddProposerIndicesList(t *testing.T) {
+	cache := NewProposerIndicesCache()
+	bRoot := [32]byte{'A'}
+	indices, err := cache.ProposerIndices(bRoot)
+	require.NoError(t, err)
+	if indices != nil {
+		t.Error("Expected committee count not to exist in empty cache")
+	}
+	require.NoError(t, cache.AddProposerIndices(&ProposerIndices{
+		ProposerIndices: indices,
+		BlockRoot:       bRoot,
+	}))
+
+	received, err := cache.ProposerIndices(bRoot)
+	require.NoError(t, err)
+	assert.DeepEqual(t, received, indices)
+
+	item := &ProposerIndices{BlockRoot: [32]byte{'B'}, ProposerIndices: []uint64{1, 2, 3, 4, 5, 6}}
+	require.NoError(t, cache.AddProposerIndices(item))
+
+	received, err = cache.ProposerIndices(item.BlockRoot)
+	require.NoError(t, err)
+	assert.DeepEqual(t, item.ProposerIndices, received)
+}
+
+func TestProposerCache_CanRotate(t *testing.T) {
+	cache := NewProposerIndicesCache()
+	for i := 0; i < int(maxProposerIndicesCacheSize)+1; i++ {
+		s := []byte(strconv.Itoa(i))
+		item := &ProposerIndices{BlockRoot: bytesutil.ToBytes32(s)}
+		require.NoError(t, cache.AddProposerIndices(item))
+	}
+
+	k := cache.ProposerIndicesCache.ListKeys()
+	assert.Equal(t, maxProposerIndicesCacheSize, uint64(len(k)))
+}

beacon-chain/cache/proposer_indices_type.go

@@ -0,0 +1,13 @@
+package cache
+
+import "errors"
+
+// ErrNotProposerIndices will be returned when a cache object is not a pointer to
+// a ProposerIndices struct.
+var ErrNotProposerIndices = errors.New("object is not a proposer indices struct")
+
+// ProposerIndices defines the cached struct for proposer indices.
+type ProposerIndices struct {
+	BlockRoot       [32]byte
+	ProposerIndices []uint64
+}

beacon-chain/cache/subnet_ids_test.go

@@ -42,12 +42,10 @@ func TestSubnetIDsCache_RoundTrip(t *testing.T) {
 }
 
 func TestSubnetIDsCache_PersistentCommitteeRoundtrip(t *testing.T) {
-	pubkeySet := [][48]byte{}
 	c := newSubnetIDs()
 
 	for i := 0; i < 20; i++ {
 		pubkey := [48]byte{byte(i)}
-		pubkeySet = append(pubkeySet, pubkey)
 		c.AddPersistentCommittee(pubkey[:], []uint64{uint64(i)}, 0)
 	}
 

beacon-chain/core/blocks/BUILD.bazel

@@ -26,7 +26,6 @@ go_library(
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/core/validators:go_default_library",
         "//beacon-chain/state:go_default_library",
-        "//beacon-chain/state/stateutil:go_default_library",
         "//proto/beacon/p2p/v1:go_default_library",
         "//shared/attestationutil:go_default_library",
         "//shared/bls:go_default_library",
@@ -63,10 +62,10 @@ go_test(
         "randao_test.go",
     ],
     embed = [":go_default_library"],
+    shard_count = 2,
     deps = [
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/state:go_default_library",
-        "//beacon-chain/state/stateutil:go_default_library",
         "//proto/beacon/p2p/v1:go_default_library",
         "//shared/aggregation:go_default_library",
         "//shared/aggregation/attestations:go_default_library",
@@ -82,7 +81,6 @@ go_test(
         "@com_github_google_gofuzz//:go_default_library",
         "@com_github_prysmaticlabs_ethereumapis//eth/v1alpha1:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
-        "@com_github_prysmaticlabs_go_ssz//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
     ],
 )

beacon-chain/core/blocks/attestation.go

@@ -12,6 +12,7 @@ import (
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/attestationutil"
 	"github.com/prysmaticlabs/prysm/shared/bls"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"go.opencensus.io/trace"
 )
@@ -21,10 +22,14 @@ import (
 func ProcessAttestations(
 	ctx context.Context,
 	beaconState *stateTrie.BeaconState,
-	body *ethpb.BeaconBlockBody,
+	b *ethpb.SignedBeaconBlock,
 ) (*stateTrie.BeaconState, error) {
+	if b.Block == nil || b.Block.Body == nil {
+		return nil, errors.New("block and block body can't be nil")
+	}
+
 	var err error
-	for idx, attestation := range body.Attestations {
+	for idx, attestation := range b.Block.Body.Attestations {
 		beaconState, err = ProcessAttestation(ctx, beaconState, attestation)
 		if err != nil {
 			return nil, errors.Wrapf(err, "could not verify attestation at index %d in block", idx)
@@ -67,23 +72,27 @@ func ProcessAttestation(
 	beaconState *stateTrie.BeaconState,
 	att *ethpb.Attestation,
 ) (*stateTrie.BeaconState, error) {
-	beaconState, err := ProcessAttestationNoVerify(ctx, beaconState, att)
+	beaconState, err := ProcessAttestationNoVerifySignature(ctx, beaconState, att)
 	if err != nil {
 		return nil, err
 	}
-	return beaconState, VerifyAttestation(ctx, beaconState, att)
+	return beaconState, VerifyAttestationSignature(ctx, beaconState, att)
 }
 
-// ProcessAttestationsNoVerify applies processing operations to a block's inner attestation
+// ProcessAttestationsNoVerifySignature applies processing operations to a block's inner attestation
 // records. The only difference would be that the attestation signature would not be verified.
-func ProcessAttestationsNoVerify(
+func ProcessAttestationsNoVerifySignature(
 	ctx context.Context,
 	beaconState *stateTrie.BeaconState,
-	body *ethpb.BeaconBlockBody,
+	b *ethpb.SignedBeaconBlock,
 ) (*stateTrie.BeaconState, error) {
+	if b.Block == nil || b.Block.Body == nil {
+		return nil, errors.New("block and block body can't be nil")
+	}
+	body := b.Block.Body
 	var err error
 	for idx, attestation := range body.Attestations {
-		beaconState, err = ProcessAttestationNoVerify(ctx, beaconState, attestation)
+		beaconState, err = ProcessAttestationNoVerifySignature(ctx, beaconState, attestation)
 		if err != nil {
 			return nil, errors.Wrapf(err, "could not verify attestation at index %d in block", idx)
 		}
@@ -91,14 +100,14 @@ func ProcessAttestationsNoVerify(
 	return beaconState, nil
 }
 
-// ProcessAttestationNoVerify processes the attestation without verifying the attestation signature. This
+// ProcessAttestationNoVerifySignature processes the attestation without verifying the attestation signature. This
 // method is used to validate attestations whose signatures have already been verified.
-func ProcessAttestationNoVerify(
+func ProcessAttestationNoVerifySignature(
 	ctx context.Context,
 	beaconState *stateTrie.BeaconState,
 	att *ethpb.Attestation,
 ) (*stateTrie.BeaconState, error) {
-	ctx, span := trace.StartSpan(ctx, "core.ProcessAttestationNoVerify")
+	ctx, span := trace.StartSpan(ctx, "core.ProcessAttestationNoVerifySignature")
 	defer span.End()
 
 	if att == nil || att.Data == nil || att.Data.Target == nil {
@@ -196,17 +205,28 @@ func ProcessAttestationNoVerify(
 		return nil, fmt.Errorf("expected target epoch %d, received %d", ffgTargetEpoch, data.Target.Epoch)
 	}
 
+	// Verify attesting indices are correct.
+	committee, err := helpers.BeaconCommitteeFromState(beaconState, att.Data.Slot, att.Data.CommitteeIndex)
+	if err != nil {
+		return nil, err
+	}
+	indexedAtt := attestationutil.ConvertToIndexed(ctx, att, committee)
+	if err := attestationutil.IsValidAttestationIndices(ctx, indexedAtt); err != nil {
+		return nil, err
+	}
+
 	return beaconState, nil
 }
 
-// VerifyAttestations will verify the signatures of the provided attestations. This method performs
+// VerifyAttestationsSignatures will verify the signatures of the provided attestations. This method performs
 // a single BLS verification call to verify the signatures of all of the provided attestations. All
 // of the provided attestations must have valid signatures or this method will return an error.
 // This method does not determine which attestation signature is invalid, only that one or more
 // attestation signatures were not valid.
-func VerifyAttestations(ctx context.Context, beaconState *stateTrie.BeaconState, atts []*ethpb.Attestation) error {
-	ctx, span := trace.StartSpan(ctx, "core.VerifyAttestations")
+func VerifyAttestationsSignatures(ctx context.Context, beaconState *stateTrie.BeaconState, b *ethpb.SignedBeaconBlock) error {
+	ctx, span := trace.StartSpan(ctx, "core.VerifyAttestationsSignatures")
 	defer span.End()
+	atts := b.Block.Body.Attestations
 	span.AddAttributes(trace.Int64Attribute("attestations", int64(len(atts))))
 
 	if len(atts) == 0 {
@@ -234,7 +254,7 @@ func VerifyAttestations(ctx context.Context, beaconState *stateTrie.BeaconState,
 		if err != nil {
 			return err
 		}
-		if err := verifyAttestationsWithDomain(ctx, beaconState, preForkAtts, prevDomain); err != nil {
+		if err := verifyAttestationsSigWithDomain(ctx, beaconState, preForkAtts, prevDomain); err != nil {
 			return err
 		}
 	} else if len(preForkAtts) > 0 {
@@ -249,12 +269,12 @@ func VerifyAttestations(ctx context.Context, beaconState *stateTrie.BeaconState,
 		return err
 	}
 
-	return verifyAttestationsWithDomain(ctx, beaconState, postForkAtts, currDomain)
+	return verifyAttestationsSigWithDomain(ctx, beaconState, postForkAtts, currDomain)
 }
 
-// VerifyAttestation converts and attestation into an indexed attestation and verifies
+// VerifyAttestationSignature converts and attestation into an indexed attestation and verifies
 // the signature in that attestation.
-func VerifyAttestation(ctx context.Context, beaconState *stateTrie.BeaconState, att *ethpb.Attestation) error {
+func VerifyAttestationSignature(ctx context.Context, beaconState *stateTrie.BeaconState, att *ethpb.Attestation) error {
 	if att == nil || att.Data == nil || att.AggregationBits.Count() == 0 {
 		return fmt.Errorf("nil or missing attestation data: %v", att)
 	}
@@ -308,7 +328,7 @@ func VerifyIndexedAttestation(ctx context.Context, beaconState *stateTrie.Beacon
 
 // Inner method to verify attestations. This abstraction allows for the domain to be provided as an
 // argument.
-func verifyAttestationsWithDomain(ctx context.Context, beaconState *stateTrie.BeaconState, atts []*ethpb.Attestation, domain []byte) error {
+func verifyAttestationsSigWithDomain(ctx context.Context, beaconState *stateTrie.BeaconState, atts []*ethpb.Attestation, domain []byte) error {
 	if len(atts) == 0 {
 		return nil
 	}
@@ -316,7 +336,7 @@ func verifyAttestationsWithDomain(ctx context.Context, beaconState *stateTrie.Be
 	if err != nil {
 		return err
 	}
-	verify, err := bls.VerifyMultipleSignatures(set.Signatures, set.Messages, set.PublicKeys)
+	verify, err := set.Verify()
 	if err != nil {
 		return errors.Errorf("got error in multiple verification: %v", err)
 	}
@@ -325,3 +345,35 @@ func verifyAttestationsWithDomain(ctx context.Context, beaconState *stateTrie.Be
 	}
 	return nil
 }
+
+// VerifyAttSigUseCheckPt uses the checkpoint info object to verify attestation signature.
+func VerifyAttSigUseCheckPt(ctx context.Context, c *pb.CheckPtInfo, att *ethpb.Attestation) error {
+	if att == nil || att.Data == nil || att.AggregationBits.Count() == 0 {
+		return fmt.Errorf("nil or missing attestation data: %v", att)
+	}
+	seed := bytesutil.ToBytes32(c.Seed)
+	committee, err := helpers.BeaconCommittee(c.ActiveIndices, seed, att.Data.Slot, att.Data.CommitteeIndex)
+	if err != nil {
+		return err
+	}
+	indexedAtt := attestationutil.ConvertToIndexed(ctx, att, committee)
+	if err := attestationutil.IsValidAttestationIndices(ctx, indexedAtt); err != nil {
+		return err
+	}
+	domain, err := helpers.Domain(c.Fork, indexedAtt.Data.Target.Epoch, params.BeaconConfig().DomainBeaconAttester, c.GenesisRoot)
+	if err != nil {
+		return err
+	}
+	indices := indexedAtt.AttestingIndices
+	pubkeys := []bls.PublicKey{}
+	for i := 0; i < len(indices); i++ {
+		pubkeyAtIdx := c.PubKeys[indices[i]]
+		pk, err := bls.PublicKeyFromBytes(pubkeyAtIdx)
+		if err != nil {
+			return errors.Wrap(err, "could not deserialize validator public key")
+		}
+		pubkeys = append(pubkeys, pk)
+	}
+
+	return attestationutil.VerifyIndexedAttestationSig(ctx, indexedAtt, pubkeys, domain)
+}

beacon-chain/core/blocks/attestation_test.go

@@ -15,6 +15,7 @@ import (
 	attaggregation "github.com/prysmaticlabs/prysm/shared/aggregation/attestations"
 	"github.com/prysmaticlabs/prysm/shared/attestationutil"
 	"github.com/prysmaticlabs/prysm/shared/bls"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
@@ -25,12 +26,13 @@ func TestProcessAttestations_InclusionDelayFailure(t *testing.T) {
 	attestations := []*ethpb.Attestation{
 		{
 			Data: &ethpb.AttestationData{
-				Target: &ethpb.Checkpoint{Epoch: 0},
+				Target: &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
 				Slot:   5,
 			},
 		},
 	}
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			Attestations: attestations,
 		},
@@ -43,7 +45,7 @@ func TestProcessAttestations_InclusionDelayFailure(t *testing.T) {
 		params.BeaconConfig().MinAttestationInclusionDelay,
 		beaconState.Slot(),
 	)
-	_, err := blocks.ProcessAttestations(context.Background(), beaconState, block.Body)
+	_, err := blocks.ProcessAttestations(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -53,7 +55,8 @@ func TestProcessAttestations_NeitherCurrentNorPrevEpoch(t *testing.T) {
 			Source: &ethpb.Checkpoint{Epoch: 0, Root: []byte("hello-world")},
 			Target: &ethpb.Checkpoint{Epoch: 0}}}
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			Attestations: []*ethpb.Attestation{att},
 		},
@@ -72,7 +75,7 @@ func TestProcessAttestations_NeitherCurrentNorPrevEpoch(t *testing.T) {
 		helpers.PrevEpoch(beaconState),
 		helpers.CurrentEpoch(beaconState),
 	)
-	_, err = blocks.ProcessAttestations(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessAttestations(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -81,13 +84,14 @@ func TestProcessAttestations_CurrentEpochFFGDataMismatches(t *testing.T) {
 	attestations := []*ethpb.Attestation{
 		{
 			Data: &ethpb.AttestationData{
-				Target: &ethpb.Checkpoint{Epoch: 0},
-				Source: &ethpb.Checkpoint{Epoch: 1},
+				Target: &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+				Source: &ethpb.Checkpoint{Epoch: 1, Root: make([]byte, 32)},
 			},
 			AggregationBits: aggBits,
 		},
 	}
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			Attestations: attestations,
 		},
@@ -104,18 +108,18 @@ func TestProcessAttestations_CurrentEpochFFGDataMismatches(t *testing.T) {
 		helpers.CurrentEpoch(beaconState),
 		attestations[0].Data.Source.Epoch,
 	)
-	_, err := blocks.ProcessAttestations(context.Background(), beaconState, block.Body)
+	_, err := blocks.ProcessAttestations(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 
-	block.Body.Attestations[0].Data.Source.Epoch = helpers.CurrentEpoch(beaconState)
-	block.Body.Attestations[0].Data.Source.Root = []byte{}
+	b.Block.Body.Attestations[0].Data.Source.Epoch = helpers.CurrentEpoch(beaconState)
+	b.Block.Body.Attestations[0].Data.Source.Root = []byte{}
 
 	want = fmt.Sprintf(
 		"expected source root %#x, received %#x",
 		beaconState.CurrentJustifiedCheckpoint().Root,
 		attestations[0].Data.Source.Root,
 	)
-	_, err = blocks.ProcessAttestations(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessAttestations(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -127,14 +131,15 @@ func TestProcessAttestations_PrevEpochFFGDataMismatches(t *testing.T) {
 	attestations := []*ethpb.Attestation{
 		{
 			Data: &ethpb.AttestationData{
-				Source: &ethpb.Checkpoint{Epoch: 1},
-				Target: &ethpb.Checkpoint{Epoch: 1},
+				Source: &ethpb.Checkpoint{Epoch: 1, Root: make([]byte, 32)},
+				Target: &ethpb.Checkpoint{Epoch: 1, Root: make([]byte, 32)},
 				Slot:   params.BeaconConfig().SlotsPerEpoch,
 			},
 			AggregationBits: aggBits,
 		},
 	}
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			Attestations: attestations,
 		},
@@ -152,19 +157,19 @@ func TestProcessAttestations_PrevEpochFFGDataMismatches(t *testing.T) {
 		helpers.PrevEpoch(beaconState),
 		attestations[0].Data.Source.Epoch,
 	)
-	_, err = blocks.ProcessAttestations(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessAttestations(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 
-	block.Body.Attestations[0].Data.Source.Epoch = helpers.PrevEpoch(beaconState)
-	block.Body.Attestations[0].Data.Target.Epoch = helpers.CurrentEpoch(beaconState)
-	block.Body.Attestations[0].Data.Source.Root = []byte{}
+	b.Block.Body.Attestations[0].Data.Source.Epoch = helpers.PrevEpoch(beaconState)
+	b.Block.Body.Attestations[0].Data.Target.Epoch = helpers.CurrentEpoch(beaconState)
+	b.Block.Body.Attestations[0].Data.Source.Root = []byte{}
 
 	want = fmt.Sprintf(
 		"expected source root %#x, received %#x",
 		beaconState.CurrentJustifiedCheckpoint().Root,
 		attestations[0].Data.Source.Root,
 	)
-	_, err = blocks.ProcessAttestations(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessAttestations(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -179,7 +184,8 @@ func TestProcessAttestations_InvalidAggregationBitsLength(t *testing.T) {
 		AggregationBits: aggBits,
 	}
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			Attestations: []*ethpb.Attestation{att},
 		},
@@ -194,7 +200,7 @@ func TestProcessAttestations_InvalidAggregationBitsLength(t *testing.T) {
 	require.NoError(t, beaconState.SetCurrentEpochAttestations([]*pb.PendingAttestation{}))
 
 	expected := "failed to verify aggregation bitfield: wanted participants bitfield length 3, got: 4"
-	_, err = blocks.ProcessAttestations(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessAttestations(context.Background(), beaconState, b)
 	assert.ErrorContains(t, expected, err)
 }
 
@@ -207,10 +213,12 @@ func TestProcessAttestations_OK(t *testing.T) {
 	copy(mockRoot[:], "hello-world")
 	att := &ethpb.Attestation{
 		Data: &ethpb.AttestationData{
-			Source: &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
-			Target: &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
+			Source:          &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
+			Target:          &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
+			BeaconBlockRoot: make([]byte, 32),
 		},
 		AggregationBits: aggBits,
+		Signature:       make([]byte, 96),
 	}
 
 	cfc := beaconState.CurrentJustifiedCheckpoint()
@@ -230,25 +238,23 @@ func TestProcessAttestations_OK(t *testing.T) {
 		require.NoError(t, err)
 		sigs[i] = sig
 	}
-	att.Signature = bls.AggregateSignatures(sigs).Marshal()[:]
+	att.Signature = bls.AggregateSignatures(sigs).Marshal()
 
-	block := &ethpb.BeaconBlock{
-		Body: &ethpb.BeaconBlockBody{
-			Attestations: []*ethpb.Attestation{att},
-		},
-	}
+	block := testutil.NewBeaconBlock()
+	block.Block.Body.Attestations = []*ethpb.Attestation{att}
 
 	err = beaconState.SetSlot(beaconState.Slot() + params.BeaconConfig().MinAttestationInclusionDelay)
 	require.NoError(t, err)
-	_, err = blocks.ProcessAttestations(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessAttestations(context.Background(), beaconState, block)
 	assert.NoError(t, err)
 }
 
 func TestProcessAggregatedAttestation_OverlappingBits(t *testing.T) {
 	beaconState, privKeys := testutil.DeterministicGenesisState(t, 100)
 	data := &ethpb.AttestationData{
-		Source: &ethpb.Checkpoint{Epoch: 0, Root: []byte("hello-world")},
-		Target: &ethpb.Checkpoint{Epoch: 0, Root: []byte("hello-world")},
+		Source:          &ethpb.Checkpoint{Epoch: 0, Root: bytesutil.PadTo([]byte("hello-world"), 32)},
+		Target:          &ethpb.Checkpoint{Epoch: 0, Root: bytesutil.PadTo([]byte("hello-world"), 32)},
+		BeaconBlockRoot: make([]byte, 32),
 	}
 	aggBits1 := bitfield.NewBitlist(4)
 	aggBits1.SetBitAt(0, true)
@@ -260,7 +266,7 @@ func TestProcessAggregatedAttestation_OverlappingBits(t *testing.T) {
 	}
 
 	cfc := beaconState.CurrentJustifiedCheckpoint()
-	cfc.Root = []byte("hello-world")
+	cfc.Root = bytesutil.PadTo([]byte("hello-world"), 32)
 	require.NoError(t, beaconState.SetCurrentJustifiedCheckpoint(cfc))
 	require.NoError(t, beaconState.SetCurrentEpochAttestations([]*pb.PendingAttestation{}))
 
@@ -276,7 +282,7 @@ func TestProcessAggregatedAttestation_OverlappingBits(t *testing.T) {
 		require.NoError(t, err)
 		sigs[i] = sig
 	}
-	att1.Signature = bls.AggregateSignatures(sigs).Marshal()[:]
+	att1.Signature = bls.AggregateSignatures(sigs).Marshal()
 
 	aggBits2 := bitfield.NewBitlist(4)
 	aggBits2.SetBitAt(1, true)
@@ -299,7 +305,7 @@ func TestProcessAggregatedAttestation_OverlappingBits(t *testing.T) {
 		require.NoError(t, err)
 		sigs[i] = sig
 	}
-	att2.Signature = bls.AggregateSignatures(sigs).Marshal()[:]
+	att2.Signature = bls.AggregateSignatures(sigs).Marshal()
 
 	_, err = attaggregation.AggregatePair(att1, att2)
 	assert.ErrorContains(t, aggregation.ErrBitsOverlap.Error(), err)
@@ -311,8 +317,9 @@ func TestProcessAggregatedAttestation_NoOverlappingBits(t *testing.T) {
 	var mockRoot [32]byte
 	copy(mockRoot[:], "hello-world")
 	data := &ethpb.AttestationData{
-		Source: &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
-		Target: &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
+		Source:          &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
+		Target:          &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
+		BeaconBlockRoot: make([]byte, 32),
 	}
 	aggBits1 := bitfield.NewBitlist(9)
 	aggBits1.SetBitAt(0, true)
@@ -320,6 +327,7 @@ func TestProcessAggregatedAttestation_NoOverlappingBits(t *testing.T) {
 	att1 := &ethpb.Attestation{
 		Data:            data,
 		AggregationBits: aggBits1,
+		Signature:       make([]byte, 32),
 	}
 
 	cfc := beaconState.CurrentJustifiedCheckpoint()
@@ -339,7 +347,7 @@ func TestProcessAggregatedAttestation_NoOverlappingBits(t *testing.T) {
 		require.NoError(t, err)
 		sigs[i] = sig
 	}
-	att1.Signature = bls.AggregateSignatures(sigs).Marshal()[:]
+	att1.Signature = bls.AggregateSignatures(sigs).Marshal()
 
 	aggBits2 := bitfield.NewBitlist(9)
 	aggBits2.SetBitAt(2, true)
@@ -347,6 +355,7 @@ func TestProcessAggregatedAttestation_NoOverlappingBits(t *testing.T) {
 	att2 := &ethpb.Attestation{
 		Data:            data,
 		AggregationBits: aggBits2,
+		Signature:       make([]byte, 32),
 	}
 
 	committee, err = helpers.BeaconCommitteeFromState(beaconState, att2.Data.Slot, att2.Data.CommitteeIndex)
@@ -361,20 +370,17 @@ func TestProcessAggregatedAttestation_NoOverlappingBits(t *testing.T) {
 		require.NoError(t, err)
 		sigs[i] = sig
 	}
-	att2.Signature = bls.AggregateSignatures(sigs).Marshal()[:]
+	att2.Signature = bls.AggregateSignatures(sigs).Marshal()
 
 	aggregatedAtt, err := attaggregation.AggregatePair(att1, att2)
 	require.NoError(t, err)
-	block := &ethpb.BeaconBlock{
-		Body: &ethpb.BeaconBlockBody{
-			Attestations: []*ethpb.Attestation{aggregatedAtt},
-		},
-	}
+	block := testutil.NewBeaconBlock()
+	block.Block.Body.Attestations = []*ethpb.Attestation{aggregatedAtt}
 
 	err = beaconState.SetSlot(beaconState.Slot() + params.BeaconConfig().MinAttestationInclusionDelay)
 	require.NoError(t, err)
 
-	_, err = blocks.ProcessAttestations(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessAttestations(context.Background(), beaconState, block)
 	assert.NoError(t, err)
 }
 
@@ -384,11 +390,11 @@ func TestProcessAttestationsNoVerify_IncorrectSlotTargetEpoch(t *testing.T) {
 	att := &ethpb.Attestation{
 		Data: &ethpb.AttestationData{
 			Slot:   params.BeaconConfig().SlotsPerEpoch,
-			Target: &ethpb.Checkpoint{},
+			Target: &ethpb.Checkpoint{Root: make([]byte, 32)},
 		},
 	}
 	wanted := fmt.Sprintf("data slot is not in the same epoch as target %d != %d", helpers.SlotToEpoch(att.Data.Slot), att.Data.Target.Epoch)
-	_, err := blocks.ProcessAttestationNoVerify(context.TODO(), beaconState, att)
+	_, err := blocks.ProcessAttestationNoVerifySignature(context.TODO(), beaconState, att)
 	assert.ErrorContains(t, wanted, err)
 }
 
@@ -404,7 +410,7 @@ func TestProcessAttestationsNoVerify_OK(t *testing.T) {
 	att := &ethpb.Attestation{
 		Data: &ethpb.AttestationData{
 			Source: &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
-			Target: &ethpb.Checkpoint{Epoch: 0},
+			Target: &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
 		},
 		AggregationBits: aggBits,
 	}
@@ -419,7 +425,7 @@ func TestProcessAttestationsNoVerify_OK(t *testing.T) {
 	require.NoError(t, beaconState.SetCurrentJustifiedCheckpoint(ckp))
 	require.NoError(t, beaconState.SetCurrentEpochAttestations([]*pb.PendingAttestation{}))
 
-	_, err = blocks.ProcessAttestationNoVerify(context.TODO(), beaconState, att)
+	_, err = blocks.ProcessAttestationNoVerifySignature(context.TODO(), beaconState, att)
 	assert.NoError(t, err)
 }
 
@@ -433,7 +439,7 @@ func TestProcessAttestationsNoVerify_BadAttIdx(t *testing.T) {
 		Data: &ethpb.AttestationData{
 			CommitteeIndex: 100,
 			Source:         &ethpb.Checkpoint{Epoch: 0, Root: mockRoot[:]},
-			Target:         &ethpb.Checkpoint{Epoch: 0},
+			Target:         &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
 		},
 		AggregationBits: aggBits,
 	}
@@ -444,7 +450,7 @@ func TestProcessAttestationsNoVerify_BadAttIdx(t *testing.T) {
 	copy(ckp.Root, "hello-world")
 	require.NoError(t, beaconState.SetCurrentJustifiedCheckpoint(ckp))
 	require.NoError(t, beaconState.SetCurrentEpochAttestations([]*pb.PendingAttestation{}))
-	_, err := blocks.ProcessAttestationNoVerify(context.TODO(), beaconState, att)
+	_, err := blocks.ProcessAttestationNoVerifySignature(context.TODO(), beaconState, att)
 	require.ErrorContains(t, "committee index 100 >= committee count 1", err)
 }
 
@@ -486,8 +492,8 @@ func TestConvertToIndexed_OK(t *testing.T) {
 	attestation := &ethpb.Attestation{
 		Signature: sig[:],
 		Data: &ethpb.AttestationData{
-			Source: &ethpb.Checkpoint{Epoch: 0},
-			Target: &ethpb.Checkpoint{Epoch: 0},
+			Source: &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+			Target: &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
 		},
 	}
 	for _, tt := range tests {
@@ -512,8 +518,9 @@ func TestVerifyIndexedAttestation_OK(t *testing.T) {
 	require.NoError(t, err)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			PublicKey: keys[i].PublicKey().Marshal(),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			PublicKey:             keys[i].PublicKey().Marshal(),
+			WithdrawalCredentials: make([]byte, 32),
 		}
 	}
 
@@ -535,33 +542,57 @@ func TestVerifyIndexedAttestation_OK(t *testing.T) {
 			Data: &ethpb.AttestationData{
 				Target: &ethpb.Checkpoint{
 					Epoch: 2,
+					Root:  make([]byte, 32),
 				},
+				Source: &ethpb.Checkpoint{
+					Root: make([]byte, 32),
+				},
+				BeaconBlockRoot: make([]byte, 32),
 			},
 			AttestingIndices: []uint64{1},
+			Signature:        make([]byte, 96),
 		}},
 		{attestation: &ethpb.IndexedAttestation{
 			Data: &ethpb.AttestationData{
 				Target: &ethpb.Checkpoint{
 					Epoch: 1,
+					Root:  make([]byte, 32),
 				},
+				Source: &ethpb.Checkpoint{
+					Root: make([]byte, 32),
+				},
+				BeaconBlockRoot: make([]byte, 32),
 			},
 			AttestingIndices: []uint64{47, 99, 101},
+			Signature:        make([]byte, 96),
 		}},
 		{attestation: &ethpb.IndexedAttestation{
 			Data: &ethpb.AttestationData{
 				Target: &ethpb.Checkpoint{
 					Epoch: 4,
+					Root:  make([]byte, 32),
 				},
+				Source: &ethpb.Checkpoint{
+					Root: make([]byte, 32),
+				},
+				BeaconBlockRoot: make([]byte, 32),
 			},
 			AttestingIndices: []uint64{21, 72},
+			Signature:        make([]byte, 96),
 		}},
 		{attestation: &ethpb.IndexedAttestation{
 			Data: &ethpb.AttestationData{
 				Target: &ethpb.Checkpoint{
 					Epoch: 7,
+					Root:  make([]byte, 32),
 				},
+				Source: &ethpb.Checkpoint{
+					Root: make([]byte, 32),
+				},
+				BeaconBlockRoot: make([]byte, 32),
 			},
 			AttestingIndices: []uint64{100, 121, 122},
+			Signature:        make([]byte, 96),
 		}},
 	}
 
@@ -653,32 +684,28 @@ func TestVerifyAttestations_VerifiesMultipleAttestations(t *testing.T) {
 	require.NoError(t, err)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			PublicKey: keys[i].PublicKey().Marshal(),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			PublicKey:             keys[i].PublicKey().Marshal(),
+			WithdrawalCredentials: make([]byte, 32),
 		}
 	}
 
-	st, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Slot:       5,
-		Validators: validators,
-		Fork: &pb.Fork{
-			Epoch:           0,
-			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-		},
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	})
+	st := testutil.NewBeaconState()
+	require.NoError(t, st.SetSlot(5))
+	require.NoError(t, st.SetValidators(validators))
 
 	comm1, err := helpers.BeaconCommitteeFromState(st, 1 /*slot*/, 0 /*committeeIndex*/)
 	require.NoError(t, err)
 	att1 := &ethpb.Attestation{
 		AggregationBits: bitfield.NewBitlist(uint64(len(comm1))),
 		Data: &ethpb.AttestationData{
-			Slot:           1,
-			CommitteeIndex: 0,
-			Target:         new(ethpb.Checkpoint),
+			Slot:            1,
+			CommitteeIndex:  0,
+			BeaconBlockRoot: make([]byte, 32),
+			Target:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+			Source:          &ethpb.Checkpoint{Root: make([]byte, 32)},
 		},
-		Signature: nil,
+		Signature: make([]byte, 96),
 	}
 	domain, err := helpers.Domain(st.Fork(), st.Fork().Epoch, params.BeaconConfig().DomainBeaconAttester, st.GenesisValidatorRoot())
 	require.NoError(t, err)
@@ -696,11 +723,13 @@ func TestVerifyAttestations_VerifiesMultipleAttestations(t *testing.T) {
 	att2 := &ethpb.Attestation{
 		AggregationBits: bitfield.NewBitlist(uint64(len(comm2))),
 		Data: &ethpb.AttestationData{
-			Slot:           1,
-			CommitteeIndex: 1,
-			Target:         new(ethpb.Checkpoint),
+			Slot:            1,
+			CommitteeIndex:  1,
+			BeaconBlockRoot: make([]byte, 32),
+			Target:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+			Source:          &ethpb.Checkpoint{Root: make([]byte, 32)},
 		},
-		Signature: nil,
+		Signature: make([]byte, 96),
 	}
 	root, err = helpers.ComputeSigningRoot(att2.Data, domain)
 	require.NoError(t, err)
@@ -711,7 +740,9 @@ func TestVerifyAttestations_VerifiesMultipleAttestations(t *testing.T) {
 	}
 	att2.Signature = bls.AggregateSignatures(sigs).Marshal()
 
-	require.NoError(t, blocks.VerifyAttestations(ctx, st, []*ethpb.Attestation{att1, att2}))
+	b := testutil.NewBeaconBlock()
+	b.Block.Body.Attestations = []*ethpb.Attestation{att1, att2}
+	require.NoError(t, blocks.VerifyAttestationsSignatures(ctx, st, b))
 }
 
 func TestVerifyAttestations_HandlesPlannedFork(t *testing.T) {
@@ -723,32 +754,33 @@ func TestVerifyAttestations_HandlesPlannedFork(t *testing.T) {
 	require.NoError(t, err)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			PublicKey: keys[i].PublicKey().Marshal(),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			PublicKey:             keys[i].PublicKey().Marshal(),
+			WithdrawalCredentials: make([]byte, 32),
 		}
 	}
 
-	st, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Slot:       35,
-		Validators: validators,
-		Fork: &pb.Fork{
-			Epoch:           1,
-			CurrentVersion:  []byte{0, 1, 2, 3},
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-		},
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	})
+	st := testutil.NewBeaconState()
+	require.NoError(t, st.SetSlot(35))
+	require.NoError(t, st.SetValidators(validators))
+	require.NoError(t, st.SetFork(&pb.Fork{
+		Epoch:           1,
+		CurrentVersion:  []byte{0, 1, 2, 3},
+		PreviousVersion: params.BeaconConfig().GenesisForkVersion,
+	}))
 
 	comm1, err := helpers.BeaconCommitteeFromState(st, 1 /*slot*/, 0 /*committeeIndex*/)
 	require.NoError(t, err)
 	att1 := &ethpb.Attestation{
 		AggregationBits: bitfield.NewBitlist(uint64(len(comm1))),
 		Data: &ethpb.AttestationData{
-			Slot:           1,
-			CommitteeIndex: 0,
-			Target:         new(ethpb.Checkpoint),
+			Slot:            1,
+			CommitteeIndex:  0,
+			BeaconBlockRoot: make([]byte, 32),
+			Source:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+			Target:          &ethpb.Checkpoint{Root: make([]byte, 32)},
 		},
-		Signature: nil,
+		Signature: make([]byte, 96),
 	}
 	prevDomain, err := helpers.Domain(st.Fork(), st.Fork().Epoch-1, params.BeaconConfig().DomainBeaconAttester, st.GenesisValidatorRoot())
 	require.NoError(t, err)
@@ -766,13 +798,16 @@ func TestVerifyAttestations_HandlesPlannedFork(t *testing.T) {
 	att2 := &ethpb.Attestation{
 		AggregationBits: bitfield.NewBitlist(uint64(len(comm2))),
 		Data: &ethpb.AttestationData{
-			Slot:           1*params.BeaconConfig().SlotsPerEpoch + 1,
-			CommitteeIndex: 1,
-			Target:         new(ethpb.Checkpoint),
+			Slot:            1*params.BeaconConfig().SlotsPerEpoch + 1,
+			CommitteeIndex:  1,
+			BeaconBlockRoot: make([]byte, 32),
+			Source:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+			Target:          &ethpb.Checkpoint{Root: make([]byte, 32)},
 		},
-		Signature: nil,
+		Signature: make([]byte, 96),
 	}
 	currDomain, err := helpers.Domain(st.Fork(), st.Fork().Epoch, params.BeaconConfig().DomainBeaconAttester, st.GenesisValidatorRoot())
+	require.NoError(t, err)
 	root, err = helpers.ComputeSigningRoot(att2.Data, currDomain)
 	require.NoError(t, err)
 	sigs = nil
@@ -782,7 +817,9 @@ func TestVerifyAttestations_HandlesPlannedFork(t *testing.T) {
 	}
 	att2.Signature = bls.AggregateSignatures(sigs).Marshal()
 
-	require.NoError(t, blocks.VerifyAttestations(ctx, st, []*ethpb.Attestation{att1, att2}))
+	b := testutil.NewBeaconBlock()
+	b.Block.Body.Attestations = []*ethpb.Attestation{att1, att2}
+	require.NoError(t, blocks.VerifyAttestationsSignatures(ctx, st, b))
 }
 
 func TestRetrieveAttestationSignatureSet_VerifiesMultipleAttestations(t *testing.T) {
@@ -793,32 +830,28 @@ func TestRetrieveAttestationSignatureSet_VerifiesMultipleAttestations(t *testing
 	require.NoError(t, err)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			PublicKey: keys[i].PublicKey().Marshal(),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			PublicKey:             keys[i].PublicKey().Marshal(),
+			WithdrawalCredentials: make([]byte, 32),
 		}
 	}
 
-	st, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Slot:       5,
-		Validators: validators,
-		Fork: &pb.Fork{
-			Epoch:           0,
-			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-		},
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	})
+	st := testutil.NewBeaconState()
+	require.NoError(t, st.SetSlot(5))
+	require.NoError(t, st.SetValidators(validators))
 
 	comm1, err := helpers.BeaconCommitteeFromState(st, 1 /*slot*/, 0 /*committeeIndex*/)
 	require.NoError(t, err)
 	att1 := &ethpb.Attestation{
 		AggregationBits: bitfield.NewBitlist(uint64(len(comm1))),
 		Data: &ethpb.AttestationData{
-			Slot:           1,
-			CommitteeIndex: 0,
-			Target:         new(ethpb.Checkpoint),
+			Slot:            1,
+			CommitteeIndex:  0,
+			BeaconBlockRoot: make([]byte, 32),
+			Target:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+			Source:          &ethpb.Checkpoint{Root: make([]byte, 32)},
 		},
-		Signature: nil,
+		Signature: make([]byte, 96),
 	}
 	domain, err := helpers.Domain(st.Fork(), st.Fork().Epoch, params.BeaconConfig().DomainBeaconAttester, st.GenesisValidatorRoot())
 	require.NoError(t, err)
@@ -836,11 +869,13 @@ func TestRetrieveAttestationSignatureSet_VerifiesMultipleAttestations(t *testing
 	att2 := &ethpb.Attestation{
 		AggregationBits: bitfield.NewBitlist(uint64(len(comm2))),
 		Data: &ethpb.AttestationData{
-			Slot:           1,
-			CommitteeIndex: 1,
-			Target:         new(ethpb.Checkpoint),
+			Slot:            1,
+			CommitteeIndex:  1,
+			BeaconBlockRoot: make([]byte, 32),
+			Target:          &ethpb.Checkpoint{Root: make([]byte, 32)},
+			Source:          &ethpb.Checkpoint{Root: make([]byte, 32)},
 		},
-		Signature: nil,
+		Signature: make([]byte, 96),
 	}
 	root, err = helpers.ComputeSigningRoot(att2.Data, domain)
 	require.NoError(t, err)

beacon-chain/core/blocks/attester_slashing.go

@@ -35,8 +35,13 @@ import (
 func ProcessAttesterSlashings(
 	ctx context.Context,
 	beaconState *stateTrie.BeaconState,
-	body *ethpb.BeaconBlockBody,
+	b *ethpb.SignedBeaconBlock,
 ) (*stateTrie.BeaconState, error) {
+	if b.Block == nil || b.Block.Body == nil {
+		return nil, errors.New("block and block body can't be nil")
+	}
+
+	body := b.Block.Body
 	for idx, slashing := range body.AttesterSlashings {
 		if err := VerifyAttesterSlashing(ctx, beaconState, slashing); err != nil {
 			return nil, errors.Wrapf(err, "could not verify attester slashing %d", idx)

beacon-chain/core/blocks/attester_slashing_test.go

@@ -11,6 +11,7 @@ import (
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/bls"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
@@ -19,12 +20,14 @@ import (
 
 func TestSlashableAttestationData_CanSlash(t *testing.T) {
 	att1 := &ethpb.AttestationData{
-		Target: &ethpb.Checkpoint{Epoch: 1},
-		Source: &ethpb.Checkpoint{Root: []byte{'A'}},
+		Target:          &ethpb.Checkpoint{Epoch: 1, Root: make([]byte, 32)},
+		Source:          &ethpb.Checkpoint{Root: bytesutil.PadTo([]byte{'A'}, 32)},
+		BeaconBlockRoot: make([]byte, 32),
 	}
 	att2 := &ethpb.AttestationData{
-		Target: &ethpb.Checkpoint{Epoch: 1},
-		Source: &ethpb.Checkpoint{Root: []byte{'B'}},
+		Target:          &ethpb.Checkpoint{Epoch: 1, Root: make([]byte, 32)},
+		Source:          &ethpb.Checkpoint{Root: bytesutil.PadTo([]byte{'B'}, 32)},
+		BeaconBlockRoot: make([]byte, 32),
 	}
 	assert.Equal(t, true, blocks.IsSlashableAttestationData(att1, att2), "Atts should have been slashable")
 	att1.Target.Epoch = 4
@@ -38,15 +41,19 @@ func TestProcessAttesterSlashings_DataNotSlashable(t *testing.T) {
 		{
 			Attestation_1: &ethpb.IndexedAttestation{
 				Data: &ethpb.AttestationData{
-					Source: &ethpb.Checkpoint{Epoch: 0},
-					Target: &ethpb.Checkpoint{Epoch: 0},
+					Source:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+					Target:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+					BeaconBlockRoot: make([]byte, 32),
 				},
+				Signature: make([]byte, 96),
 			},
 			Attestation_2: &ethpb.IndexedAttestation{
 				Data: &ethpb.AttestationData{
-					Source: &ethpb.Checkpoint{Epoch: 1},
-					Target: &ethpb.Checkpoint{Epoch: 1},
+					Source:          &ethpb.Checkpoint{Epoch: 1, Root: make([]byte, 32)},
+					Target:          &ethpb.Checkpoint{Epoch: 1, Root: make([]byte, 32)},
+					BeaconBlockRoot: make([]byte, 32),
 				},
+				Signature: make([]byte, 96),
 			},
 		},
 	}
@@ -58,13 +65,14 @@ func TestProcessAttesterSlashings_DataNotSlashable(t *testing.T) {
 		Slot:       currentSlot,
 	})
 	require.NoError(t, err)
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			AttesterSlashings: slashings,
 		},
 	}
 	want := fmt.Sprint("attestations are not slashable")
-	_, err = blocks.ProcessAttesterSlashings(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessAttesterSlashings(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -82,29 +90,34 @@ func TestProcessAttesterSlashings_IndexedAttestationFailedToVerify(t *testing.T)
 		{
 			Attestation_1: &ethpb.IndexedAttestation{
 				Data: &ethpb.AttestationData{
-					Source: &ethpb.Checkpoint{Epoch: 1},
-					Target: &ethpb.Checkpoint{Epoch: 0},
+					Source:          &ethpb.Checkpoint{Epoch: 1, Root: make([]byte, 32)},
+					Target:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+					BeaconBlockRoot: make([]byte, 32),
 				},
 				AttestingIndices: make([]uint64, params.BeaconConfig().MaxValidatorsPerCommittee+1),
+				Signature:        make([]byte, 96),
 			},
 			Attestation_2: &ethpb.IndexedAttestation{
 				Data: &ethpb.AttestationData{
-					Source: &ethpb.Checkpoint{Epoch: 0},
-					Target: &ethpb.Checkpoint{Epoch: 0},
+					Source:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+					Target:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+					BeaconBlockRoot: make([]byte, 32),
 				},
 				AttestingIndices: make([]uint64, params.BeaconConfig().MaxValidatorsPerCommittee+1),
+				Signature:        make([]byte, 96),
 			},
 		},
 	}
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			AttesterSlashings: slashings,
 		},
 	}
 
 	want := fmt.Sprint("validator indices count exceeds MAX_VALIDATORS_PER_COMMITTEE")
-	_, err = blocks.ProcessAttesterSlashings(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessAttesterSlashings(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -116,8 +129,9 @@ func TestProcessAttesterSlashings_AppliesCorrectStatus(t *testing.T) {
 
 	att1 := &ethpb.IndexedAttestation{
 		Data: &ethpb.AttestationData{
-			Source: &ethpb.Checkpoint{Epoch: 1},
-			Target: &ethpb.Checkpoint{Epoch: 0},
+			Source:          &ethpb.Checkpoint{Epoch: 1, Root: make([]byte, 32)},
+			Target:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+			BeaconBlockRoot: make([]byte, 32),
 		},
 		AttestingIndices: []uint64{0, 1},
 	}
@@ -128,12 +142,13 @@ func TestProcessAttesterSlashings_AppliesCorrectStatus(t *testing.T) {
 	sig0 := privKeys[0].Sign(signingRoot[:])
 	sig1 := privKeys[1].Sign(signingRoot[:])
 	aggregateSig := bls.AggregateSignatures([]bls.Signature{sig0, sig1})
-	att1.Signature = aggregateSig.Marshal()[:]
+	att1.Signature = aggregateSig.Marshal()
 
 	att2 := &ethpb.IndexedAttestation{
 		Data: &ethpb.AttestationData{
-			Source: &ethpb.Checkpoint{Epoch: 0},
-			Target: &ethpb.Checkpoint{Epoch: 0},
+			Source:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+			Target:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+			BeaconBlockRoot: make([]byte, 32),
 		},
 		AttestingIndices: []uint64{0, 1},
 	}
@@ -142,7 +157,7 @@ func TestProcessAttesterSlashings_AppliesCorrectStatus(t *testing.T) {
 	sig0 = privKeys[0].Sign(signingRoot[:])
 	sig1 = privKeys[1].Sign(signingRoot[:])
 	aggregateSig = bls.AggregateSignatures([]bls.Signature{sig0, sig1})
-	att2.Signature = aggregateSig.Marshal()[:]
+	att2.Signature = aggregateSig.Marshal()
 
 	slashings := []*ethpb.AttesterSlashing{
 		{
@@ -154,13 +169,14 @@ func TestProcessAttesterSlashings_AppliesCorrectStatus(t *testing.T) {
 	currentSlot := 2 * params.BeaconConfig().SlotsPerEpoch
 	require.NoError(t, beaconState.SetSlot(currentSlot))
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			AttesterSlashings: slashings,
 		},
 	}
 
-	newState, err := blocks.ProcessAttesterSlashings(context.Background(), beaconState, block.Body)
+	newState, err := blocks.ProcessAttesterSlashings(context.Background(), beaconState, b)
 	require.NoError(t, err)
 	newRegistry := newState.Validators()
 

beacon-chain/core/blocks/block_operations_fuzz_test.go

@@ -6,13 +6,12 @@ import (
 
 	fuzz "github.com/google/gofuzz"
 	eth "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	beaconstate "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
+	ethereum_beacon_p2p_v1 "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/params"
-
-	//"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
-	beaconstate "github.com/prysmaticlabs/prysm/beacon-chain/state"
-	ethereum_beacon_p2p_v1 "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
+	"github.com/prysmaticlabs/prysm/shared/testutil/require"
 )
 
 func TestFuzzProcessAttestationNoVerify_10000(t *testing.T) {
@@ -25,7 +24,8 @@ func TestFuzzProcessAttestationNoVerify_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(att)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		_, err = ProcessAttestationNoVerify(ctx, s, att)
+		require.NoError(t, err)
+		_, err = ProcessAttestationNoVerifySignature(ctx, s, att)
 		_ = err
 	}
 }
@@ -40,7 +40,8 @@ func TestFuzzProcessBlockHeader_10000(t *testing.T) {
 		fuzzer.Fuzz(block)
 
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		_, err = ProcessBlockHeader(s, block)
+		require.NoError(t, err)
+		_, err = ProcessBlockHeader(context.Background(), s, block)
 		_ = err
 	}
 }
@@ -63,6 +64,7 @@ func TestFuzzverifyDepositDataSigningRoot_10000(t *testing.T) {
 		fuzzer.Fuzz(&s)
 		fuzzer.Fuzz(&d)
 		err := verifySignature(ba, pubkey[:], sig[:], domain[:])
+		_ = err
 		err = verifySignature(ba, p, s, d)
 		_ = err
 	}
@@ -70,14 +72,14 @@ func TestFuzzverifyDepositDataSigningRoot_10000(t *testing.T) {
 
 func TestFuzzProcessEth1DataInBlock_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
-	block := &eth.BeaconBlock{}
+	b := &eth.SignedBeaconBlock{}
 	state := &stateTrie.BeaconState{}
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(block)
-		s, err := ProcessEth1DataInBlock(state, block)
+		fuzzer.Fuzz(b)
+		s, err := ProcessEth1DataInBlock(context.Background(), state, b)
 		if err != nil && s != nil {
-			t.Fatalf("state should be nil on err. found: %v on error: %v for state: %v and block: %v", s, err, state, block)
+			t.Fatalf("state should be nil on err. found: %v on error: %v for state: %v and block: %v", s, err, state, b)
 		}
 	}
 }
@@ -105,6 +107,7 @@ func TestFuzzEth1DataHasEnoughSupport_10000(t *testing.T) {
 		s, err := beaconstate.InitializeFromProto(&ethereum_beacon_p2p_v1.BeaconState{
 			Eth1DataVotes: stateVotes,
 		})
+		require.NoError(t, err)
 		_, err = Eth1DataHasEnoughSupport(s, eth1data)
 		_ = err
 	}
@@ -120,6 +123,7 @@ func TestFuzzProcessBlockHeaderNoVerify_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(block)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
+		require.NoError(t, err)
 		_, err = ProcessBlockHeaderNoVerify(s, block)
 		_ = err
 	}
@@ -128,15 +132,16 @@ func TestFuzzProcessBlockHeaderNoVerify_10000(t *testing.T) {
 func TestFuzzProcessRandao_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethereum_beacon_p2p_v1.BeaconState{}
-	blockBody := &eth.BeaconBlockBody{}
+	b := &eth.SignedBeaconBlock{}
 
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(blockBody)
+		fuzzer.Fuzz(b)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		r, err := ProcessRandao(s, blockBody)
+		require.NoError(t, err)
+		r, err := ProcessRandao(context.Background(), s, b)
 		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, blockBody)
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, b)
 		}
 	}
 }
@@ -150,6 +155,7 @@ func TestFuzzProcessRandaoNoVerify_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(blockBody)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
+		require.NoError(t, err)
 		r, err := ProcessRandaoNoVerify(s, blockBody)
 		if err != nil && r != nil {
 			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, blockBody)
@@ -160,15 +166,16 @@ func TestFuzzProcessRandaoNoVerify_10000(t *testing.T) {
 func TestFuzzProcessProposerSlashings_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethereum_beacon_p2p_v1.BeaconState{}
-	blockBody := &eth.BeaconBlockBody{}
+	b := &eth.SignedBeaconBlock{}
 	ctx := context.Background()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(blockBody)
+		fuzzer.Fuzz(b)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		r, err := ProcessProposerSlashings(ctx, s, blockBody)
+		require.NoError(t, err)
+		r, err := ProcessProposerSlashings(ctx, s, b)
 		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, blockBody)
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, b)
 		}
 	}
 }
@@ -181,6 +188,7 @@ func TestFuzzVerifyProposerSlashing_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(proposerSlashing)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
+		require.NoError(t, err)
 		err = VerifyProposerSlashing(s, proposerSlashing)
 		_ = err
 	}
@@ -189,15 +197,16 @@ func TestFuzzVerifyProposerSlashing_10000(t *testing.T) {
 func TestFuzzProcessAttesterSlashings_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethereum_beacon_p2p_v1.BeaconState{}
-	blockBody := &eth.BeaconBlockBody{}
+	b := &eth.SignedBeaconBlock{}
 	ctx := context.Background()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(blockBody)
+		fuzzer.Fuzz(b)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		r, err := ProcessAttesterSlashings(ctx, s, blockBody)
+		require.NoError(t, err)
+		r, err := ProcessAttesterSlashings(ctx, s, b)
 		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, blockBody)
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, b)
 		}
 	}
 }
@@ -211,6 +220,7 @@ func TestFuzzVerifyAttesterSlashing_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(attesterSlashing)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
+		require.NoError(t, err)
 		err = VerifyAttesterSlashing(ctx, s, attesterSlashing)
 		_ = err
 	}
@@ -241,15 +251,16 @@ func TestFuzzslashableAttesterIndices_10000(t *testing.T) {
 func TestFuzzProcessAttestations_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethereum_beacon_p2p_v1.BeaconState{}
-	blockBody := &eth.BeaconBlockBody{}
+	b := &eth.SignedBeaconBlock{}
 	ctx := context.Background()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(blockBody)
+		fuzzer.Fuzz(b)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		r, err := ProcessAttestations(ctx, s, blockBody)
+		require.NoError(t, err)
+		r, err := ProcessAttestations(ctx, s, b)
 		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, blockBody)
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, b)
 		}
 	}
 }
@@ -257,15 +268,16 @@ func TestFuzzProcessAttestations_10000(t *testing.T) {
 func TestFuzzProcessAttestationsNoVerify_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethereum_beacon_p2p_v1.BeaconState{}
-	blockBody := &eth.BeaconBlockBody{}
+	b := &eth.SignedBeaconBlock{}
 	ctx := context.Background()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(blockBody)
+		fuzzer.Fuzz(b)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		r, err := ProcessAttestationsNoVerify(ctx, s, blockBody)
+		require.NoError(t, err)
+		r, err := ProcessAttestationsNoVerifySignature(ctx, s, b)
 		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, blockBody)
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, b)
 		}
 	}
 }
@@ -279,6 +291,7 @@ func TestFuzzProcessAttestation_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(attestation)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
+		require.NoError(t, err)
 		r, err := ProcessAttestation(ctx, s, attestation)
 		if err != nil && r != nil {
 			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, attestation)
@@ -295,6 +308,7 @@ func TestFuzzVerifyIndexedAttestationn_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(idxAttestation)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
+		require.NoError(t, err)
 		err = VerifyIndexedAttestation(ctx, s, idxAttestation)
 		_ = err
 	}
@@ -309,7 +323,8 @@ func TestFuzzVerifyAttestation_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(attestation)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		err = VerifyAttestation(ctx, s, attestation)
+		require.NoError(t, err)
+		err = VerifyAttestationSignature(ctx, s, attestation)
 		_ = err
 	}
 }
@@ -317,15 +332,16 @@ func TestFuzzVerifyAttestation_10000(t *testing.T) {
 func TestFuzzProcessDeposits_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethereum_beacon_p2p_v1.BeaconState{}
-	blockBody := &eth.BeaconBlockBody{}
+	b := &eth.SignedBeaconBlock{}
 	ctx := context.Background()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(blockBody)
+		fuzzer.Fuzz(b)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		r, err := ProcessDeposits(ctx, s, blockBody.Deposits)
+		require.NoError(t, err)
+		r, err := ProcessDeposits(ctx, s, b)
 		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, blockBody)
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, b)
 		}
 	}
 }
@@ -340,6 +356,7 @@ func TestFuzzProcessPreGenesisDeposit_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(deposit)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
+		require.NoError(t, err)
 		r, err := ProcessPreGenesisDeposits(ctx, s, []*eth.Deposit{deposit})
 		if err != nil && r != nil {
 			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposit)
@@ -356,6 +373,7 @@ func TestFuzzProcessDeposit_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(deposit)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
+		require.NoError(t, err)
 		r, err := ProcessDeposit(s, deposit, true)
 		if err != nil && r != nil {
 			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposit)
@@ -371,6 +389,7 @@ func TestFuzzverifyDeposit_10000(t *testing.T) {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(deposit)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
+		require.NoError(t, err)
 		err = verifyDeposit(s, deposit)
 		_ = err
 	}
@@ -379,15 +398,16 @@ func TestFuzzverifyDeposit_10000(t *testing.T) {
 func TestFuzzProcessVoluntaryExits_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethereum_beacon_p2p_v1.BeaconState{}
-	blockBody := &eth.BeaconBlockBody{}
+	b := &eth.SignedBeaconBlock{}
 	ctx := context.Background()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(blockBody)
+		fuzzer.Fuzz(b)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		r, err := ProcessVoluntaryExits(ctx, s, blockBody)
+		require.NoError(t, err)
+		r, err := ProcessVoluntaryExits(ctx, s, b)
 		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, blockBody)
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, b)
 		}
 	}
 }
@@ -395,14 +415,15 @@ func TestFuzzProcessVoluntaryExits_10000(t *testing.T) {
 func TestFuzzProcessVoluntaryExitsNoVerify_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethereum_beacon_p2p_v1.BeaconState{}
-	blockBody := &eth.BeaconBlockBody{}
+	b := &eth.SignedBeaconBlock{}
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(blockBody)
+		fuzzer.Fuzz(b)
 		s, err := beaconstate.InitializeFromProtoUnsafe(state)
-		r, err := ProcessVoluntaryExitsNoVerify(s, blockBody)
+		require.NoError(t, err)
+		r, err := ProcessVoluntaryExits(context.Background(), s, b)
 		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, blockBody)
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, b)
 		}
 	}
 }
@@ -419,7 +440,7 @@ func TestFuzzVerifyExit_10000(t *testing.T) {
 		fuzzer.Fuzz(val)
 		fuzzer.Fuzz(fork)
 		fuzzer.Fuzz(&slot)
-		err := VerifyExit(val, slot, fork, ve, params.BeaconConfig().ZeroHash[:])
+		err := VerifyExitAndSignature(val, slot, fork, ve, params.BeaconConfig().ZeroHash[:])
 		_ = err
 	}
 }

beacon-chain/core/blocks/block_regression_test.go

@@ -39,10 +39,12 @@ func TestProcessAttesterSlashings_RegressionSlashableIndices(t *testing.T) {
 	root1 := [32]byte{'d', 'o', 'u', 'b', 'l', 'e', '1'}
 	att1 := &ethpb.IndexedAttestation{
 		Data: &ethpb.AttestationData{
-			Source: &ethpb.Checkpoint{Epoch: 0},
-			Target: &ethpb.Checkpoint{Epoch: 0, Root: root1[:]},
+			Source:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+			Target:          &ethpb.Checkpoint{Epoch: 0, Root: root1[:]},
+			BeaconBlockRoot: make([]byte, 32),
 		},
 		AttestingIndices: setA,
+		Signature:        make([]byte, 96),
 	}
 	domain, err := helpers.Domain(beaconState.Fork(), 0, params.BeaconConfig().DomainBeaconAttester, beaconState.GenesisValidatorRoot())
 	require.NoError(t, err)
@@ -54,15 +56,17 @@ func TestProcessAttesterSlashings_RegressionSlashableIndices(t *testing.T) {
 		aggSigs = append(aggSigs, sig)
 	}
 	aggregateSig := bls.AggregateSignatures(aggSigs)
-	att1.Signature = aggregateSig.Marshal()[:]
+	att1.Signature = aggregateSig.Marshal()
 
 	root2 := [32]byte{'d', 'o', 'u', 'b', 'l', 'e', '2'}
 	att2 := &ethpb.IndexedAttestation{
 		Data: &ethpb.AttestationData{
-			Source: &ethpb.Checkpoint{Epoch: 0},
-			Target: &ethpb.Checkpoint{Epoch: 0, Root: root2[:]},
+			Source:          &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
+			Target:          &ethpb.Checkpoint{Epoch: 0, Root: root2[:]},
+			BeaconBlockRoot: make([]byte, 32),
 		},
 		AttestingIndices: setB,
+		Signature:        make([]byte, 96),
 	}
 	signingRoot, err = helpers.ComputeSigningRoot(att2.Data, domain)
 	assert.NoError(t, err, "Could not get signing root of beacon block header")
@@ -72,7 +76,7 @@ func TestProcessAttesterSlashings_RegressionSlashableIndices(t *testing.T) {
 		aggSigs = append(aggSigs, sig)
 	}
 	aggregateSig = bls.AggregateSignatures(aggSigs)
-	att2.Signature = aggregateSig.Marshal()[:]
+	att2.Signature = aggregateSig.Marshal()
 
 	slashings := []*ethpb.AttesterSlashing{
 		{
@@ -84,13 +88,14 @@ func TestProcessAttesterSlashings_RegressionSlashableIndices(t *testing.T) {
 	currentSlot := 2 * params.BeaconConfig().SlotsPerEpoch
 	require.NoError(t, beaconState.SetSlot(currentSlot))
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			AttesterSlashings: slashings,
 		},
 	}
 
-	newState, err := blocks.ProcessAttesterSlashings(context.Background(), beaconState, block.Body)
+	newState, err := blocks.ProcessAttesterSlashings(context.Background(), beaconState, b)
 	require.NoError(t, err)
 	newRegistry := newState.Validators()
 	if !newRegistry[expectedSlashedVal].Slashed {

beacon-chain/core/blocks/deposit.go

@@ -25,7 +25,8 @@ func ProcessPreGenesisDeposits(
 	deposits []*ethpb.Deposit,
 ) (*stateTrie.BeaconState, error) {
 	var err error
-	beaconState, err = ProcessDeposits(ctx, beaconState, deposits)
+	beaconState, err = ProcessDeposits(ctx, beaconState, &ethpb.SignedBeaconBlock{
+		Block: &ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{Deposits: deposits}}})
 	if err != nil {
 		return nil, errors.Wrap(err, "could not process deposit")
 	}
@@ -66,10 +67,14 @@ func ProcessPreGenesisDeposits(
 func ProcessDeposits(
 	ctx context.Context,
 	beaconState *stateTrie.BeaconState,
-	deposits []*ethpb.Deposit,
+	b *ethpb.SignedBeaconBlock,
 ) (*stateTrie.BeaconState, error) {
-	var err error
+	if b.Block == nil || b.Block.Body == nil {
+		return nil, errors.New("block and block body can't be nil")
+	}
 
+	deposits := b.Block.Body.Deposits
+	var err error
 	domain, err := helpers.ComputeDomain(params.BeaconConfig().DomainDeposit, nil, nil)
 	if err != nil {
 		return nil, err
@@ -197,7 +202,7 @@ func verifyDeposit(beaconState *stateTrie.BeaconState, deposit *ethpb.Deposit) e
 	}
 
 	receiptRoot := eth1Data.DepositRoot
-	leaf, err := ssz.HashTreeRoot(deposit.Data)
+	leaf, err := deposit.Data.HashTreeRoot()
 	if err != nil {
 		return errors.Wrap(err, "could not tree hash deposit data")
 	}
@@ -206,12 +211,14 @@ func verifyDeposit(beaconState *stateTrie.BeaconState, deposit *ethpb.Deposit) e
 		leaf[:],
 		int(beaconState.Eth1DepositIndex()),
 		deposit.Proof,
+		params.BeaconConfig().DepositContractTreeDepth,
 	); !ok {
 		return fmt.Errorf(
 			"deposit merkle branch of deposit root did not verify for root: %#x",
 			receiptRoot,
 		)
 	}
+
 	return nil
 }
 
@@ -225,7 +232,7 @@ func verifyDepositDataWithDomain(ctx context.Context, deps []*ethpb.Deposit, dom
 		return nil
 	}
 	pks := make([]bls.PublicKey, len(deps))
-	sigs := make([]bls.Signature, len(deps))
+	sigs := make([][]byte, len(deps))
 	msgs := make([][32]byte, len(deps))
 	for i, dep := range deps {
 		if ctx.Err() != nil {
@@ -234,17 +241,12 @@ func verifyDepositDataWithDomain(ctx context.Context, deps []*ethpb.Deposit, dom
 		if dep == nil || dep.Data == nil {
 			return errors.New("nil deposit")
 		}
-
 		dpk, err := bls.PublicKeyFromBytes(dep.Data.PublicKey)
 		if err != nil {
 			return err
 		}
 		pks[i] = dpk
-		dsig, err := bls.SignatureFromBytes(dep.Data.Signature)
-		if err != nil {
-			return err
-		}
-		sigs[i] = dsig
+		sigs[i] = dep.Data.Signature
 		root, err := ssz.SigningRoot(dep.Data)
 		if err != nil {
 			return errors.Wrap(err, "could not get signing root")
@@ -253,7 +255,7 @@ func verifyDepositDataWithDomain(ctx context.Context, deps []*ethpb.Deposit, dom
 			ObjectRoot: root[:],
 			Domain:     domain,
 		}
-		ctrRoot, err := ssz.HashTreeRoot(signingData)
+		ctrRoot, err := signingData.HashTreeRoot()
 		if err != nil {
 			return errors.Wrap(err, "could not get container root")
 		}

beacon-chain/core/blocks/deposit_test.go

@@ -5,7 +5,6 @@ import (
 	"testing"
 
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
@@ -26,7 +25,8 @@ func TestProcessDeposits_SameValidatorMultipleDepositsSameBlock(t *testing.T) {
 	require.NoError(t, err)
 	eth1Data, err := testutil.DeterministicEth1Data(len(dep))
 	require.NoError(t, err)
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			// 3 deposits from the same validator
 			Deposits: []*ethpb.Deposit{dep[0], dep[1], dep[2]},
@@ -49,7 +49,7 @@ func TestProcessDeposits_SameValidatorMultipleDepositsSameBlock(t *testing.T) {
 		},
 	})
 	require.NoError(t, err)
-	newState, err := blocks.ProcessDeposits(context.Background(), beaconState, block.Body.Deposits)
+	newState, err := blocks.ProcessDeposits(context.Background(), beaconState, b)
 	require.NoError(t, err, "Expected block deposits to process correctly")
 
 	assert.Equal(t, 2, len(newState.Validators()), "Incorrect validator count")
@@ -58,11 +58,12 @@ func TestProcessDeposits_SameValidatorMultipleDepositsSameBlock(t *testing.T) {
 func TestProcessDeposits_MerkleBranchFailsVerification(t *testing.T) {
 	deposit := &ethpb.Deposit{
 		Data: &ethpb.Deposit_Data{
-			PublicKey: []byte{1, 2, 3},
-			Signature: make([]byte, 96),
+			PublicKey:             bytesutil.PadTo([]byte{1, 2, 3}, 48),
+			WithdrawalCredentials: make([]byte, 32),
+			Signature:             make([]byte, 96),
 		},
 	}
-	leaf, err := ssz.HashTreeRoot(deposit.Data)
+	leaf, err := deposit.Data.HashTreeRoot()
 	require.NoError(t, err)
 
 	// We then create a merkle branch for the test.
@@ -72,7 +73,8 @@ func TestProcessDeposits_MerkleBranchFailsVerification(t *testing.T) {
 	require.NoError(t, err, "Could not generate proof")
 
 	deposit.Proof = proof
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			Deposits: []*ethpb.Deposit{deposit},
 		},
@@ -85,7 +87,7 @@ func TestProcessDeposits_MerkleBranchFailsVerification(t *testing.T) {
 	})
 	require.NoError(t, err)
 	want := "deposit root did not verify"
-	_, err = blocks.ProcessDeposits(context.Background(), beaconState, block.Body.Deposits)
+	_, err = blocks.ProcessDeposits(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -95,7 +97,8 @@ func TestProcessDeposits_AddsNewValidatorDeposit(t *testing.T) {
 	eth1Data, err := testutil.DeterministicEth1Data(len(dep))
 	require.NoError(t, err)
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			Deposits: []*ethpb.Deposit{dep[0]},
 		},
@@ -117,7 +120,7 @@ func TestProcessDeposits_AddsNewValidatorDeposit(t *testing.T) {
 		},
 	})
 	require.NoError(t, err)
-	newState, err := blocks.ProcessDeposits(context.Background(), beaconState, block.Body.Deposits)
+	newState, err := blocks.ProcessDeposits(context.Background(), beaconState, b)
 	require.NoError(t, err, "Expected block deposits to process correctly")
 	if newState.Balances()[1] != dep[0].Data.Amount {
 		t.Errorf(
@@ -132,15 +135,17 @@ func TestProcessDeposits_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T)
 	sk := bls.RandKey()
 	deposit := &ethpb.Deposit{
 		Data: &ethpb.Deposit_Data{
-			PublicKey: sk.PublicKey().Marshal(),
-			Amount:    1000,
+			PublicKey:             sk.PublicKey().Marshal(),
+			Amount:                1000,
+			WithdrawalCredentials: make([]byte, 32),
+			Signature:             make([]byte, 96),
 		},
 	}
-	sr, err := helpers.ComputeSigningRoot(deposit.Data, bytesutil.ToBytes(3, 8))
+	sr, err := helpers.ComputeSigningRoot(deposit.Data, bytesutil.ToBytes(3, 32))
 	require.NoError(t, err)
 	sig := sk.Sign(sr[:])
 	deposit.Data.Signature = sig.Marshal()
-	leaf, err := ssz.HashTreeRoot(deposit.Data)
+	leaf, err := deposit.Data.HashTreeRoot()
 	require.NoError(t, err)
 
 	// We then create a merkle branch for the test.
@@ -150,7 +155,8 @@ func TestProcessDeposits_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T)
 	require.NoError(t, err, "Could not generate proof")
 
 	deposit.Proof = proof
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			Deposits: []*ethpb.Deposit{deposit},
 		},
@@ -175,7 +181,7 @@ func TestProcessDeposits_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T)
 		},
 	})
 	require.NoError(t, err)
-	newState, err := blocks.ProcessDeposits(context.Background(), beaconState, block.Body.Deposits)
+	newState, err := blocks.ProcessDeposits(context.Background(), beaconState, b)
 	require.NoError(t, err, "Process deposit failed")
 	assert.Equal(t, uint64(1000+50), newState.Balances()[1], "Expected balance at index 1 to be 1050")
 }

beacon-chain/core/blocks/eth1_data.go

@@ -2,6 +2,7 @@ package blocks
 
 import (
 	"bytes"
+	"context"
 	"errors"
 
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
@@ -18,7 +19,8 @@ import (
 //    state.eth1_data_votes.append(body.eth1_data)
 //    if state.eth1_data_votes.count(body.eth1_data) * 2 > EPOCHS_PER_ETH1_VOTING_PERIOD * SLOTS_PER_EPOCH:
 //        state.latest_eth1_data = body.eth1_data
-func ProcessEth1DataInBlock(beaconState *stateTrie.BeaconState, block *ethpb.BeaconBlock) (*stateTrie.BeaconState, error) {
+func ProcessEth1DataInBlock(ctx context.Context, beaconState *stateTrie.BeaconState, b *ethpb.SignedBeaconBlock) (*stateTrie.BeaconState, error) {
+	block := b.Block
 	if beaconState == nil {
 		return nil, errors.New("nil state")
 	}

beacon-chain/core/blocks/eth1_data_test.go

@@ -1,6 +1,7 @@
 package blocks_test
 
 import (
+	"context"
 	"fmt"
 	"testing"
 
@@ -9,7 +10,9 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
 	beaconstate "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
+	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
 )
@@ -19,7 +22,7 @@ func FakeDeposits(n uint64) []*ethpb.Eth1Data {
 	for i := uint64(0); i < n; i++ {
 		deposits[i] = &ethpb.Eth1Data{
 			DepositCount: 1,
-			DepositRoot:  []byte("root"),
+			DepositRoot:  bytesutil.PadTo([]byte("root"), 32),
 		}
 	}
 	return deposits
@@ -36,7 +39,7 @@ func TestEth1DataHasEnoughSupport(t *testing.T) {
 			stateVotes: FakeDeposits(4 * params.BeaconConfig().SlotsPerEpoch),
 			data: &ethpb.Eth1Data{
 				DepositCount: 1,
-				DepositRoot:  []byte("root"),
+				DepositRoot:  bytesutil.PadTo([]byte("root"), 32),
 			},
 			hasSupport:         true,
 			votingPeriodLength: 7,
@@ -44,7 +47,7 @@ func TestEth1DataHasEnoughSupport(t *testing.T) {
 			stateVotes: FakeDeposits(4 * params.BeaconConfig().SlotsPerEpoch),
 			data: &ethpb.Eth1Data{
 				DepositCount: 1,
-				DepositRoot:  []byte("root"),
+				DepositRoot:  bytesutil.PadTo([]byte("root"), 32),
 			},
 			hasSupport:         false,
 			votingPeriodLength: 8,
@@ -52,7 +55,7 @@ func TestEth1DataHasEnoughSupport(t *testing.T) {
 			stateVotes: FakeDeposits(4 * params.BeaconConfig().SlotsPerEpoch),
 			data: &ethpb.Eth1Data{
 				DepositCount: 1,
-				DepositRoot:  []byte("root"),
+				DepositRoot:  bytesutil.PadTo([]byte("root"), 32),
 			},
 			hasSupport:         false,
 			votingPeriodLength: 10,
@@ -161,7 +164,8 @@ func TestProcessEth1Data_SetsCorrectly(t *testing.T) {
 	})
 	require.NoError(t, err)
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			Eth1Data: &ethpb.Eth1Data{
 				DepositRoot: []byte{2},
@@ -172,7 +176,7 @@ func TestProcessEth1Data_SetsCorrectly(t *testing.T) {
 
 	period := params.BeaconConfig().EpochsPerEth1VotingPeriod * params.BeaconConfig().SlotsPerEpoch
 	for i := uint64(0); i < period; i++ {
-		beaconState, err = blocks.ProcessEth1DataInBlock(beaconState, block)
+		beaconState, err = blocks.ProcessEth1DataInBlock(context.Background(), beaconState, b)
 		require.NoError(t, err)
 	}
 
@@ -180,10 +184,10 @@ func TestProcessEth1Data_SetsCorrectly(t *testing.T) {
 	if len(newETH1DataVotes) <= 1 {
 		t.Error("Expected new ETH1 data votes to have length > 1")
 	}
-	if !proto.Equal(beaconState.Eth1Data(), beaconstate.CopyETH1Data(block.Body.Eth1Data)) {
+	if !proto.Equal(beaconState.Eth1Data(), beaconstate.CopyETH1Data(b.Block.Body.Eth1Data)) {
 		t.Errorf(
 			"Expected latest eth1 data to have been set to %v, received %v",
-			block.Body.Eth1Data,
+			b.Block.Body.Eth1Data,
 			beaconState.Eth1Data(),
 		)
 	}

beacon-chain/core/blocks/exit.go

@@ -39,8 +39,13 @@ import (
 func ProcessVoluntaryExits(
 	ctx context.Context,
 	beaconState *stateTrie.BeaconState,
-	body *ethpb.BeaconBlockBody,
+	b *ethpb.SignedBeaconBlock,
 ) (*stateTrie.BeaconState, error) {
+	if b.Block == nil || b.Block.Body == nil {
+		return nil, errors.New("block and block body can't be nil")
+	}
+
+	body := b.Block.Body
 	exits := body.VoluntaryExits
 	for idx, exit := range exits {
 		if exit == nil || exit.Exit == nil {
@@ -50,7 +55,7 @@ func ProcessVoluntaryExits(
 		if err != nil {
 			return nil, err
 		}
-		if err := VerifyExit(val, beaconState.Slot(), beaconState.Fork(), exit, beaconState.GenesisValidatorRoot()); err != nil {
+		if err := VerifyExitAndSignature(val, beaconState.Slot(), beaconState.Fork(), exit, beaconState.GenesisValidatorRoot()); err != nil {
 			return nil, errors.Wrapf(err, "could not verify exit %d", idx)
 		}
 		beaconState, err = v.InitiateValidatorExit(beaconState, exit.Exit.ValidatorIndex)
@@ -61,9 +66,10 @@ func ProcessVoluntaryExits(
 	return beaconState, nil
 }
 
-// ProcessVoluntaryExitsNoVerify processes all the voluntary exits in
+// ProcessVoluntaryExitsNoVerifySignature processes all the voluntary exits in
 // a block body, without verifying their BLS signatures.
-func ProcessVoluntaryExitsNoVerify(
+// This function is here to satisfy fuzz tests.
+func ProcessVoluntaryExitsNoVerifySignature(
 	beaconState *stateTrie.BeaconState,
 	body *ethpb.BeaconBlockBody,
 ) (*stateTrie.BeaconState, error) {
@@ -93,7 +99,7 @@ func ProcessVoluntaryExitsNoVerify(
 	return beaconState, nil
 }
 
-// VerifyExit implements the spec defined validation for voluntary exits.
+// VerifyExitAndSignature implements the spec defined validation for voluntary exits.
 //
 // Spec pseudocode definition:
 //   def process_voluntary_exit(state: BeaconState, exit: VoluntaryExit) -> None:
@@ -112,7 +118,7 @@ func ProcessVoluntaryExitsNoVerify(
 //    # Verify signature
 //    domain = get_domain(state, DOMAIN_VOLUNTARY_EXIT, exit.epoch)
 //    assert bls_verify(validator.pubkey, signing_root(exit), exit.signature, domain)
-func VerifyExit(validator *stateTrie.ReadOnlyValidator, currentSlot uint64, fork *pb.Fork, signed *ethpb.SignedVoluntaryExit, genesisRoot []byte) error {
+func VerifyExitAndSignature(validator *stateTrie.ReadOnlyValidator, currentSlot uint64, fork *pb.Fork, signed *ethpb.SignedVoluntaryExit, genesisRoot []byte) error {
 	if signed == nil || signed.Exit == nil {
 		return errors.New("nil exit")
 	}
@@ -154,9 +160,11 @@ func verifyExitConditions(validator *stateTrie.ReadOnlyValidator, currentSlot ui
 	if !helpers.IsActiveValidatorUsingTrie(validator, currentEpoch) {
 		return errors.New("non-active validator cannot exit")
 	}
-	// Verify the validator has not yet exited.
+	// Verify the validator has not yet submitted an exit.
 	if validator.ExitEpoch() != params.BeaconConfig().FarFutureEpoch {
-		return fmt.Errorf("validator has already exited at epoch: %v", validator.ExitEpoch())
+		return fmt.Errorf(
+			"validator has already submitted an exit, which will take place at epoch: %v",
+			validator.ExitEpoch())
 	}
 	// Exits must specify an epoch when they become valid; they are not valid before then.
 	if currentEpoch < exit.Epoch {
@@ -165,7 +173,7 @@ func verifyExitConditions(validator *stateTrie.ReadOnlyValidator, currentSlot ui
 	// Verify the validator has been active long enough.
 	if currentEpoch < validator.ActivationEpoch()+params.BeaconConfig().ShardCommitteePeriod {
 		return fmt.Errorf(
-			"validator has not been active long enough to exit, wanted epoch %d >= %d",
+			"validator has not been active long enough to exit: %d epochs vs required %d epochs",
 			currentEpoch,
 			validator.ActivationEpoch()+params.BeaconConfig().ShardCommitteePeriod,
 		)

beacon-chain/core/blocks/exit_test.go

@@ -11,6 +11,7 @@ import (
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/bls"
 	"github.com/prysmaticlabs/prysm/shared/params"
+	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
 )
@@ -32,18 +33,19 @@ func TestProcessVoluntaryExits_ValidatorNotActive(t *testing.T) {
 		Validators: registry,
 	})
 	require.NoError(t, err)
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			VoluntaryExits: exits,
 		},
 	}
 
 	want := "non-active validator cannot exit"
-	_, err = blocks.ProcessVoluntaryExits(context.Background(), state, block.Body)
+	_, err = blocks.ProcessVoluntaryExits(context.Background(), state, b)
 	assert.ErrorContains(t, want, err)
 
 	// Check conformance of no verify method.
-	_, err = blocks.ProcessVoluntaryExitsNoVerify(state, block.Body)
+	_, err = blocks.ProcessVoluntaryExitsNoVerifySignature(state, b.Block.Body)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -65,20 +67,20 @@ func TestProcessVoluntaryExits_InvalidExitEpoch(t *testing.T) {
 		Slot:       0,
 	})
 	require.NoError(t, err)
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			VoluntaryExits: exits,
 		},
 	}
 
 	want := "expected current epoch >= exit epoch"
-	_, err = blocks.ProcessVoluntaryExits(context.Background(), state, block.Body)
+	_, err = blocks.ProcessVoluntaryExits(context.Background(), state, b)
 	assert.ErrorContains(t, want, err)
 
 	// Check conformance of no verify method.
-	_, err = blocks.ProcessVoluntaryExitsNoVerify(state, block.Body)
+	_, err = blocks.ProcessVoluntaryExitsNoVerifySignature(state, b.Block.Body)
 	assert.ErrorContains(t, want, err)
-
 }
 
 func TestProcessVoluntaryExits_NotActiveLongEnoughToExit(t *testing.T) {
@@ -100,14 +102,45 @@ func TestProcessVoluntaryExits_NotActiveLongEnoughToExit(t *testing.T) {
 		Slot:       10,
 	})
 	require.NoError(t, err)
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			VoluntaryExits: exits,
 		},
 	}
 
 	want := "validator has not been active long enough to exit"
-	_, err = blocks.ProcessVoluntaryExits(context.Background(), state, block.Body)
+	_, err = blocks.ProcessVoluntaryExits(context.Background(), state, b)
+	assert.ErrorContains(t, want, err)
+}
+
+func TestProcessVoluntaryExits_ExitAlreadySubmitted(t *testing.T) {
+	exits := []*ethpb.SignedVoluntaryExit{
+		{
+			Exit: &ethpb.VoluntaryExit{
+				Epoch: 10,
+			},
+		},
+	}
+	registry := []*ethpb.Validator{
+		{
+			ExitEpoch: 10,
+		},
+	}
+	state, err := stateTrie.InitializeFromProto(&pb.BeaconState{
+		Validators: registry,
+		Slot:       0,
+	})
+	require.NoError(t, err)
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
+		Body: &ethpb.BeaconBlockBody{
+			VoluntaryExits: exits,
+		},
+	}
+
+	want := "validator has already submitted an exit, which will take place at epoch: 10"
+	_, err = blocks.ProcessVoluntaryExits(context.Background(), state, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -141,19 +174,20 @@ func TestProcessVoluntaryExits_AppliesCorrectStatus(t *testing.T) {
 	priv := bls.RandKey()
 	val, err := state.ValidatorAtIndex(0)
 	require.NoError(t, err)
-	val.PublicKey = priv.PublicKey().Marshal()[:]
+	val.PublicKey = priv.PublicKey().Marshal()
 	require.NoError(t, state.UpdateValidatorAtIndex(0, val))
 	exits[0].Signature, err = helpers.ComputeDomainAndSign(state, helpers.CurrentEpoch(state), exits[0].Exit, params.BeaconConfig().DomainVoluntaryExit, priv)
 	require.NoError(t, err)
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			VoluntaryExits: exits,
 		},
 	}
 
 	stateCopy := state.Copy()
-	newState, err := blocks.ProcessVoluntaryExits(context.Background(), state, block.Body)
+	newState, err := blocks.ProcessVoluntaryExits(context.Background(), state, b)
 	require.NoError(t, err, "Could not process exits")
 	newRegistry := newState.Validators()
 	if newRegistry[0].ExitEpoch != helpers.ActivationExitEpoch(state.Slot()/params.BeaconConfig().SlotsPerEpoch) {
@@ -162,12 +196,11 @@ func TestProcessVoluntaryExits_AppliesCorrectStatus(t *testing.T) {
 	}
 
 	// Check conformance with NoVerify Exit Method.
-	newState, err = blocks.ProcessVoluntaryExitsNoVerify(stateCopy, block.Body)
+	newState, err = blocks.ProcessVoluntaryExitsNoVerifySignature(stateCopy, b.Block.Body)
 	require.NoError(t, err, "Could not process exits")
 	newRegistry = newState.Validators()
 	if newRegistry[0].ExitEpoch != helpers.ActivationExitEpoch(stateCopy.Slot()/params.BeaconConfig().SlotsPerEpoch) {
 		t.Errorf("Expected validator exit epoch to be %d, got %d",
 			helpers.ActivationExitEpoch(stateCopy.Slot()/params.BeaconConfig().SlotsPerEpoch), newRegistry[0].ExitEpoch)
 	}
-
 }

beacon-chain/core/blocks/genesis.go

@@ -4,19 +4,27 @@ package blocks
 
 import (
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
 )
 
 // NewGenesisBlock returns the canonical, genesis block for the beacon chain protocol.
 func NewGenesisBlock(stateRoot []byte) *ethpb.SignedBeaconBlock {
 	zeroHash := params.BeaconConfig().ZeroHash[:]
-	genBlock := &ethpb.BeaconBlock{
-		ParentRoot: zeroHash,
-		StateRoot:  stateRoot,
-		Body:       &ethpb.BeaconBlockBody{},
-	}
-	return &ethpb.SignedBeaconBlock{
-		Block:     genBlock,
+	block := &ethpb.SignedBeaconBlock{
+		Block: &ethpb.BeaconBlock{
+			ParentRoot: zeroHash,
+			StateRoot:  bytesutil.PadTo(stateRoot, 32),
+			Body: &ethpb.BeaconBlockBody{
+				RandaoReveal: make([]byte, 96),
+				Eth1Data: &ethpb.Eth1Data{
+					DepositRoot: make([]byte, 32),
+					BlockHash:   make([]byte, 32),
+				},
+				Graffiti: make([]byte, 32),
+			},
+		},
 		Signature: params.BeaconConfig().EmptySignature[:],
 	}
+	return block
 }

beacon-chain/core/blocks/genesis_test.go

@@ -4,11 +4,12 @@ import (
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 )
 
 func TestGenesisBlock_InitializedCorrectly(t *testing.T) {
-	stateHash := []byte{0}
+	stateHash := bytesutil.PadTo([]byte{0}, 32)
 	b1 := blocks.NewGenesisBlock(stateHash)
 
 	assert.NotNil(t, b1.Block.ParentRoot, "Genesis block missing ParentHash field")

beacon-chain/core/blocks/header.go

@@ -2,13 +2,13 @@ package blocks
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 
 	"github.com/pkg/errors"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
 )
 
@@ -37,6 +37,7 @@ import (
 //    # Verify proposer signature
 //    assert bls_verify(proposer.pubkey, signing_root(block), block.signature, get_domain(state, DOMAIN_BEACON_PROPOSER))
 func ProcessBlockHeader(
+	ctx context.Context,
 	beaconState *stateTrie.BeaconState,
 	block *ethpb.SignedBeaconBlock,
 ) (*stateTrie.BeaconState, error) {
@@ -99,7 +100,7 @@ func ProcessBlockHeaderNoVerify(
 	if parentHeader.Slot >= block.Slot {
 		return nil, fmt.Errorf("block.Slot %d must be greater than state.LatestBlockHeader.Slot %d", block.Slot, parentHeader.Slot)
 	}
-	parentRoot, err := stateutil.BlockHeaderRoot(parentHeader)
+	parentRoot, err := parentHeader.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}
@@ -118,7 +119,7 @@ func ProcessBlockHeaderNoVerify(
 		return nil, fmt.Errorf("proposer at index %d was previously slashed", idx)
 	}
 
-	bodyRoot, err := stateutil.BlockBodyRoot(block.Body)
+	bodyRoot, err := block.Body.HashTreeRoot()
 	if err != nil {
 		return nil, err
 	}

beacon-chain/core/blocks/header_test.go

@@ -1,23 +1,22 @@
 package blocks_test
 
 import (
+	"context"
 	"io/ioutil"
 	"testing"
 
 	"github.com/gogo/protobuf/proto"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/go-ssz"
+	"github.com/sirupsen/logrus"
+
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
-	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
-	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/bls"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
-	"github.com/sirupsen/logrus"
 )
 
 func init() {
@@ -28,40 +27,35 @@ func TestProcessBlockHeader_ImproperBlockSlot(t *testing.T) {
 	validators := make([]*ethpb.Validator, params.BeaconConfig().MinGenesisActiveValidatorCount)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			Slashed:   true,
+			PublicKey:             make([]byte, 32),
+			WithdrawalCredentials: make([]byte, 32),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			Slashed:               true,
 		}
 	}
 
-	state, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Validators:        validators,
-		Slot:              10,
-		LatestBlockHeader: &ethpb.BeaconBlockHeader{Slot: 10}, // Must be less than block.Slot
-		Fork: &pb.Fork{
-			PreviousVersion: []byte{0, 0, 0, 0},
-			CurrentVersion:  []byte{0, 0, 0, 0},
-		},
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	})
-	require.NoError(t, err)
+	state := testutil.NewBeaconState()
+	require.NoError(t, state.SetSlot(10))
+	require.NoError(t, state.SetValidators(validators))
+	require.NoError(t, state.SetLatestBlockHeader(&ethpb.BeaconBlockHeader{
+		Slot:       10, // Must be less than block.Slot
+		ParentRoot: make([]byte, 32),
+		StateRoot:  make([]byte, 32),
+		BodyRoot:   make([]byte, 32),
+	}))
 
-	latestBlockSignedRoot, err := stateutil.BlockHeaderRoot(state.LatestBlockHeader())
+	latestBlockSignedRoot, err := state.LatestBlockHeader().HashTreeRoot()
 	require.NoError(t, err)
 
 	currentEpoch := helpers.CurrentEpoch(state)
 	priv := bls.RandKey()
 	pID, err := helpers.BeaconProposerIndex(state)
 	require.NoError(t, err)
-	block := &ethpb.SignedBeaconBlock{
-		Block: &ethpb.BeaconBlock{
-			ProposerIndex: pID,
-			Slot:          10,
-			Body: &ethpb.BeaconBlockBody{
-				RandaoReveal: []byte{'A', 'B', 'C'},
-			},
-			ParentRoot: latestBlockSignedRoot[:],
-		},
-	}
+	block := testutil.NewBeaconBlock()
+	block.Block.ProposerIndex = pID
+	block.Block.Slot = 10
+	block.Block.Body.RandaoReveal = bytesutil.PadTo([]byte{'A', 'B', 'C'}, 96)
+	block.Block.ParentRoot = latestBlockSignedRoot[:]
 	block.Signature, err = helpers.ComputeDomainAndSign(state, currentEpoch, block.Block, params.BeaconConfig().DomainBeaconProposer, priv)
 	require.NoError(t, err)
 
@@ -72,36 +66,36 @@ func TestProcessBlockHeader_ImproperBlockSlot(t *testing.T) {
 	err = state.UpdateValidatorAtIndex(proposerIdx, validators[proposerIdx])
 	require.NoError(t, err)
 
-	_, err = blocks.ProcessBlockHeader(state, block)
+	_, err = blocks.ProcessBlockHeader(context.Background(), state, block)
 	assert.ErrorContains(t, "block.Slot 10 must be greater than state.LatestBlockHeader.Slot 10", err)
 }
 
 func TestProcessBlockHeader_WrongProposerSig(t *testing.T) {
 	testutil.ResetCache()
 	beaconState, privKeys := testutil.DeterministicGenesisState(t, 100)
-	require.NoError(t, beaconState.SetLatestBlockHeader(&ethpb.BeaconBlockHeader{Slot: 9}))
+	require.NoError(t, beaconState.SetLatestBlockHeader(&ethpb.BeaconBlockHeader{
+		Slot:       9,
+		ParentRoot: make([]byte, 32),
+		StateRoot:  make([]byte, 32),
+		BodyRoot:   make([]byte, 32),
+	}))
 	require.NoError(t, beaconState.SetSlot(10))
 
-	lbhdr, err := stateutil.BlockHeaderRoot(beaconState.LatestBlockHeader())
+	lbhdr, err := beaconState.LatestBlockHeader().HashTreeRoot()
 	require.NoError(t, err)
 
 	proposerIdx, err := helpers.BeaconProposerIndex(beaconState)
 	require.NoError(t, err)
 
-	block := &ethpb.SignedBeaconBlock{
-		Block: &ethpb.BeaconBlock{
-			ProposerIndex: proposerIdx,
-			Slot:          10,
-			Body: &ethpb.BeaconBlockBody{
-				RandaoReveal: []byte{'A', 'B', 'C'},
-			},
-			ParentRoot: lbhdr[:],
-		},
-	}
+	block := testutil.NewBeaconBlock()
+	block.Block.ProposerIndex = proposerIdx
+	block.Block.Slot = 10
+	block.Block.Body.RandaoReveal = bytesutil.PadTo([]byte{'A', 'B', 'C'}, 96)
+	block.Block.ParentRoot = lbhdr[:]
 	block.Signature, err = helpers.ComputeDomainAndSign(beaconState, 0, block.Block, params.BeaconConfig().DomainBeaconProposer, privKeys[proposerIdx+1])
 	require.NoError(t, err)
 
-	_, err = blocks.ProcessBlockHeader(beaconState, block)
+	_, err = blocks.ProcessBlockHeader(context.Background(), beaconState, block)
 	want := "signature did not verify"
 	assert.ErrorContains(t, want, err)
 }
@@ -110,24 +104,25 @@ func TestProcessBlockHeader_DifferentSlots(t *testing.T) {
 	validators := make([]*ethpb.Validator, params.BeaconConfig().MinGenesisActiveValidatorCount)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			Slashed:   true,
+			PublicKey:             make([]byte, 32),
+			WithdrawalCredentials: make([]byte, 32),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			Slashed:               true,
 		}
 	}
 
-	state, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Validators:        validators,
-		Slot:              10,
-		LatestBlockHeader: &ethpb.BeaconBlockHeader{Slot: 9},
-		Fork: &pb.Fork{
-			PreviousVersion: []byte{0, 0, 0, 0},
-			CurrentVersion:  []byte{0, 0, 0, 0},
-		},
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	})
-	require.NoError(t, err)
+	state := testutil.NewBeaconState()
+	require.NoError(t, state.SetValidators(validators))
+	require.NoError(t, state.SetSlot(10))
+	require.NoError(t, state.SetLatestBlockHeader(&ethpb.BeaconBlockHeader{
+		Slot:          9,
+		ProposerIndex: 0,
+		ParentRoot:    make([]byte, 32),
+		StateRoot:     make([]byte, 32),
+		BodyRoot:      make([]byte, 32),
+	}))
 
-	lbhsr, err := ssz.HashTreeRoot(state.LatestBlockHeader())
+	lbhsr, err := state.LatestBlockHeader().HashTreeRoot()
 	require.NoError(t, err)
 	currentEpoch := helpers.CurrentEpoch(state)
 
@@ -146,7 +141,7 @@ func TestProcessBlockHeader_DifferentSlots(t *testing.T) {
 		Signature: blockSig,
 	}
 
-	_, err = blocks.ProcessBlockHeader(state, block)
+	_, err = blocks.ProcessBlockHeader(context.Background(), state, block)
 	want := "is different than block slot"
 	assert.ErrorContains(t, want, err)
 }
@@ -155,23 +150,19 @@ func TestProcessBlockHeader_PreviousBlockRootNotSignedRoot(t *testing.T) {
 	validators := make([]*ethpb.Validator, params.BeaconConfig().MinGenesisActiveValidatorCount)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			Slashed:   true,
+			PublicKey:             make([]byte, 48),
+			WithdrawalCredentials: make([]byte, 32),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			Slashed:               true,
 		}
 	}
 
-	state, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Validators:        validators,
-		Slot:              10,
-		LatestBlockHeader: &ethpb.BeaconBlockHeader{Slot: 9},
-		Fork: &pb.Fork{
-			PreviousVersion: []byte{0, 0, 0, 0},
-			CurrentVersion:  []byte{0, 0, 0, 0},
-		},
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	})
-	require.NoError(t, err)
-
+	state := testutil.NewBeaconState()
+	require.NoError(t, state.SetValidators(validators))
+	require.NoError(t, state.SetSlot(10))
+	bh := state.LatestBlockHeader()
+	bh.Slot = 9
+	require.NoError(t, state.SetLatestBlockHeader(bh))
 	currentEpoch := helpers.CurrentEpoch(state)
 	priv := bls.RandKey()
 	blockSig, err := helpers.ComputeDomainAndSign(state, currentEpoch, []byte("hello"), params.BeaconConfig().DomainBeaconProposer, priv)
@@ -179,19 +170,14 @@ func TestProcessBlockHeader_PreviousBlockRootNotSignedRoot(t *testing.T) {
 	validators[5896].PublicKey = priv.PublicKey().Marshal()
 	pID, err := helpers.BeaconProposerIndex(state)
 	require.NoError(t, err)
-	block := &ethpb.SignedBeaconBlock{
-		Block: &ethpb.BeaconBlock{
-			ProposerIndex: pID,
-			Slot:          10,
-			Body: &ethpb.BeaconBlockBody{
-				RandaoReveal: []byte{'A', 'B', 'C'},
-			},
-			ParentRoot: []byte{'A'},
-		},
-		Signature: blockSig,
-	}
+	block := testutil.NewBeaconBlock()
+	block.Block.Slot = 10
+	block.Block.ProposerIndex = pID
+	block.Block.Body.RandaoReveal = bytesutil.PadTo([]byte{'A', 'B', 'C'}, 96)
+	block.Block.ParentRoot = bytesutil.PadTo([]byte{'A'}, 32)
+	block.Signature = blockSig
 
-	_, err = blocks.ProcessBlockHeader(state, block)
+	_, err = blocks.ProcessBlockHeader(context.Background(), state, block)
 	want := "does not match"
 	assert.ErrorContains(t, want, err)
 }
@@ -200,24 +186,20 @@ func TestProcessBlockHeader_SlashedProposer(t *testing.T) {
 	validators := make([]*ethpb.Validator, params.BeaconConfig().MinGenesisActiveValidatorCount)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			Slashed:   true,
+			PublicKey:             make([]byte, 48),
+			WithdrawalCredentials: make([]byte, 32),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			Slashed:               true,
 		}
 	}
 
-	state, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Validators:        validators,
-		Slot:              10,
-		LatestBlockHeader: &ethpb.BeaconBlockHeader{Slot: 9},
-		Fork: &pb.Fork{
-			PreviousVersion: []byte{0, 0, 0, 0},
-			CurrentVersion:  []byte{0, 0, 0, 0},
-		},
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	})
-	require.NoError(t, err)
-
-	parentRoot, err := stateutil.BlockHeaderRoot(state.LatestBlockHeader())
+	state := testutil.NewBeaconState()
+	require.NoError(t, state.SetValidators(validators))
+	require.NoError(t, state.SetSlot(10))
+	bh := state.LatestBlockHeader()
+	bh.Slot = 9
+	require.NoError(t, state.SetLatestBlockHeader(bh))
+	parentRoot, err := state.LatestBlockHeader().HashTreeRoot()
 	require.NoError(t, err)
 	currentEpoch := helpers.CurrentEpoch(state)
 	priv := bls.RandKey()
@@ -227,19 +209,14 @@ func TestProcessBlockHeader_SlashedProposer(t *testing.T) {
 	validators[12683].PublicKey = priv.PublicKey().Marshal()
 	pID, err := helpers.BeaconProposerIndex(state)
 	require.NoError(t, err)
-	block := &ethpb.SignedBeaconBlock{
-		Block: &ethpb.BeaconBlock{
-			ProposerIndex: pID,
-			Slot:          10,
-			Body: &ethpb.BeaconBlockBody{
-				RandaoReveal: []byte{'A', 'B', 'C'},
-			},
-			ParentRoot: parentRoot[:],
-		},
-		Signature: blockSig,
-	}
+	block := testutil.NewBeaconBlock()
+	block.Block.Slot = 10
+	block.Block.ProposerIndex = pID
+	block.Block.Body.RandaoReveal = bytesutil.PadTo([]byte{'A', 'B', 'C'}, 96)
+	block.Block.ParentRoot = parentRoot[:]
+	block.Signature = blockSig
 
-	_, err = blocks.ProcessBlockHeader(state, block)
+	_, err = blocks.ProcessBlockHeader(context.Background(), state, block)
 	want := "was previously slashed"
 	assert.ErrorContains(t, want, err)
 }
@@ -248,43 +225,39 @@ func TestProcessBlockHeader_OK(t *testing.T) {
 	validators := make([]*ethpb.Validator, params.BeaconConfig().MinGenesisActiveValidatorCount)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			Slashed:   true,
+			PublicKey:             make([]byte, 32),
+			WithdrawalCredentials: make([]byte, 32),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			Slashed:               true,
 		}
 	}
 
-	state, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Validators:        validators,
-		Slot:              10,
-		LatestBlockHeader: &ethpb.BeaconBlockHeader{Slot: 9},
-		Fork: &pb.Fork{
-			PreviousVersion: []byte{0, 0, 0, 0},
-			CurrentVersion:  []byte{0, 0, 0, 0},
-		},
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	})
-	require.NoError(t, err)
+	state := testutil.NewBeaconState()
+	require.NoError(t, state.SetValidators(validators))
+	require.NoError(t, state.SetSlot(10))
+	require.NoError(t, state.SetLatestBlockHeader(&ethpb.BeaconBlockHeader{
+		Slot:          9,
+		ProposerIndex: 0,
+		ParentRoot:    make([]byte, 32),
+		StateRoot:     make([]byte, 32),
+		BodyRoot:      make([]byte, 32),
+	}))
 
-	latestBlockSignedRoot, err := stateutil.BlockHeaderRoot(state.LatestBlockHeader())
+	latestBlockSignedRoot, err := state.LatestBlockHeader().HashTreeRoot()
 	require.NoError(t, err)
 
 	currentEpoch := helpers.CurrentEpoch(state)
 	priv := bls.RandKey()
 	pID, err := helpers.BeaconProposerIndex(state)
 	require.NoError(t, err)
-	block := &ethpb.SignedBeaconBlock{
-		Block: &ethpb.BeaconBlock{
-			ProposerIndex: pID,
-			Slot:          10,
-			Body: &ethpb.BeaconBlockBody{
-				RandaoReveal: []byte{'A', 'B', 'C'},
-			},
-			ParentRoot: latestBlockSignedRoot[:],
-		},
-	}
+	block := testutil.NewBeaconBlock()
+	block.Block.ProposerIndex = pID
+	block.Block.Slot = 10
+	block.Block.Body.RandaoReveal = bytesutil.PadTo([]byte{'A', 'B', 'C'}, 96)
+	block.Block.ParentRoot = latestBlockSignedRoot[:]
 	block.Signature, err = helpers.ComputeDomainAndSign(state, currentEpoch, block.Block, params.BeaconConfig().DomainBeaconProposer, priv)
 	require.NoError(t, err)
-	bodyRoot, err := stateutil.BlockBodyRoot(block.Block.Body)
+	bodyRoot, err := block.Block.Body.HashTreeRoot()
 	require.NoError(t, err, "Failed to hash block bytes got")
 
 	proposerIdx, err := helpers.BeaconProposerIndex(state)
@@ -294,7 +267,7 @@ func TestProcessBlockHeader_OK(t *testing.T) {
 	err = state.UpdateValidatorAtIndex(proposerIdx, validators[proposerIdx])
 	require.NoError(t, err)
 
-	newState, err := blocks.ProcessBlockHeader(state, block)
+	newState, err := blocks.ProcessBlockHeader(context.Background(), state, block)
 	require.NoError(t, err, "Failed to process block header got")
 	var zeroHash [32]byte
 	nsh := newState.LatestBlockHeader()
@@ -312,40 +285,36 @@ func TestBlockSignatureSet_OK(t *testing.T) {
 	validators := make([]*ethpb.Validator, params.BeaconConfig().MinGenesisActiveValidatorCount)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-			Slashed:   true,
+			PublicKey:             make([]byte, 32),
+			WithdrawalCredentials: make([]byte, 32),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			Slashed:               true,
 		}
 	}
 
-	state, err := stateTrie.InitializeFromProto(&pb.BeaconState{
-		Validators:        validators,
-		Slot:              10,
-		LatestBlockHeader: &ethpb.BeaconBlockHeader{Slot: 9},
-		Fork: &pb.Fork{
-			PreviousVersion: []byte{0, 0, 0, 0},
-			CurrentVersion:  []byte{0, 0, 0, 0},
-		},
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	})
-	require.NoError(t, err)
+	state := testutil.NewBeaconState()
+	require.NoError(t, state.SetValidators(validators))
+	require.NoError(t, state.SetSlot(10))
+	require.NoError(t, state.SetLatestBlockHeader(&ethpb.BeaconBlockHeader{
+		Slot:          9,
+		ProposerIndex: 0,
+		ParentRoot:    make([]byte, 32),
+		StateRoot:     make([]byte, 32),
+		BodyRoot:      make([]byte, 32),
+	}))
 
-	latestBlockSignedRoot, err := stateutil.BlockHeaderRoot(state.LatestBlockHeader())
+	latestBlockSignedRoot, err := state.LatestBlockHeader().HashTreeRoot()
 	require.NoError(t, err)
 
 	currentEpoch := helpers.CurrentEpoch(state)
 	priv := bls.RandKey()
 	pID, err := helpers.BeaconProposerIndex(state)
 	require.NoError(t, err)
-	block := &ethpb.SignedBeaconBlock{
-		Block: &ethpb.BeaconBlock{
-			ProposerIndex: pID,
-			Slot:          10,
-			Body: &ethpb.BeaconBlockBody{
-				RandaoReveal: []byte{'A', 'B', 'C'},
-			},
-			ParentRoot: latestBlockSignedRoot[:],
-		},
-	}
+	block := testutil.NewBeaconBlock()
+	block.Block.Slot = 10
+	block.Block.ProposerIndex = pID
+	block.Block.Body.RandaoReveal = bytesutil.PadTo([]byte{'A', 'B', 'C'}, 96)
+	block.Block.ParentRoot = latestBlockSignedRoot[:]
 	block.Signature, err = helpers.ComputeDomainAndSign(state, currentEpoch, block.Block, params.BeaconConfig().DomainBeaconProposer, priv)
 	require.NoError(t, err)
 	proposerIdx, err := helpers.BeaconProposerIndex(state)

beacon-chain/core/blocks/proposer_slashing.go

@@ -38,8 +38,13 @@ import (
 func ProcessProposerSlashings(
 	ctx context.Context,
 	beaconState *stateTrie.BeaconState,
-	body *ethpb.BeaconBlockBody,
+	b *ethpb.SignedBeaconBlock,
 ) (*stateTrie.BeaconState, error) {
+	if b.Block == nil || b.Block.Body == nil {
+		return nil, errors.New("block and block body can't be nil")
+	}
+
+	body := b.Block.Body
 	var err error
 	for idx, slashing := range body.ProposerSlashings {
 		if slashing == nil {
@@ -74,14 +79,14 @@ func VerifyProposerSlashing(
 	if pIdx != slashing.Header_2.Header.ProposerIndex {
 		return fmt.Errorf("mismatched indices, received %d == %d", slashing.Header_1.Header.ProposerIndex, slashing.Header_2.Header.ProposerIndex)
 	}
-	if proto.Equal(slashing.Header_1, slashing.Header_2) {
+	if proto.Equal(slashing.Header_1.Header, slashing.Header_2.Header) {
 		return errors.New("expected slashing headers to differ")
 	}
 	proposer, err := beaconState.ValidatorAtIndexReadOnly(slashing.Header_1.Header.ProposerIndex)
 	if err != nil {
 		return err
 	}
-	if !helpers.IsSlashableValidatorUsingTrie(proposer, helpers.SlotToEpoch(beaconState.Slot())) {
+	if !helpers.IsSlashableValidatorUsingTrie(proposer, helpers.SlotToEpoch(hSlot)) {
 		return fmt.Errorf("validator with key %#x is not slashable", proposer.PublicKey())
 	}
 	headers := []*ethpb.SignedBeaconBlockHeader{slashing.Header_1, slashing.Header_2}

beacon-chain/core/blocks/proposer_slashing_test.go

@@ -10,6 +10,7 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
+	"github.com/prysmaticlabs/prysm/shared/bls"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
@@ -39,13 +40,14 @@ func TestProcessProposerSlashings_UnmatchedHeaderSlots(t *testing.T) {
 	}
 	require.NoError(t, beaconState.SetSlot(currentSlot))
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			ProposerSlashings: slashings,
 		},
 	}
 	want := "mismatched header slots"
-	_, err := blocks.ProcessProposerSlashings(context.Background(), beaconState, block.Body)
+	_, err := blocks.ProcessProposerSlashings(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -71,13 +73,14 @@ func TestProcessProposerSlashings_SameHeaders(t *testing.T) {
 	}
 
 	require.NoError(t, beaconState.SetSlot(currentSlot))
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			ProposerSlashings: slashings,
 		},
 	}
 	want := "expected slashing headers to differ"
-	_, err := blocks.ProcessProposerSlashings(context.Background(), beaconState, block.Body)
+	_, err := blocks.ProcessProposerSlashings(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -97,15 +100,17 @@ func TestProcessProposerSlashings_ValidatorNotSlashable(t *testing.T) {
 				Header: &ethpb.BeaconBlockHeader{
 					ProposerIndex: 0,
 					Slot:          0,
+					BodyRoot:      []byte("foo"),
 				},
-				Signature: []byte("A"),
+				Signature: bytesutil.PadTo([]byte("A"), 96),
 			},
 			Header_2: &ethpb.SignedBeaconBlockHeader{
 				Header: &ethpb.BeaconBlockHeader{
 					ProposerIndex: 0,
 					Slot:          0,
+					BodyRoot:      []byte("bar"),
 				},
-				Signature: []byte("B"),
+				Signature: bytesutil.PadTo([]byte("B"), 96),
 			},
 		},
 	}
@@ -115,7 +120,8 @@ func TestProcessProposerSlashings_ValidatorNotSlashable(t *testing.T) {
 		Slot:       currentSlot,
 	})
 	require.NoError(t, err)
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			ProposerSlashings: slashings,
 		},
@@ -124,7 +130,7 @@ func TestProcessProposerSlashings_ValidatorNotSlashable(t *testing.T) {
 		"validator with key %#x is not slashable",
 		bytesutil.ToBytes48(beaconState.Validators()[0].PublicKey),
 	)
-	_, err = blocks.ProcessProposerSlashings(context.Background(), beaconState, block.Body)
+	_, err = blocks.ProcessProposerSlashings(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -138,7 +144,9 @@ func TestProcessProposerSlashings_AppliesCorrectStatus(t *testing.T) {
 		Header: &ethpb.BeaconBlockHeader{
 			ProposerIndex: proposerIdx,
 			Slot:          0,
-			StateRoot:     []byte("A"),
+			ParentRoot:    make([]byte, 32),
+			BodyRoot:      make([]byte, 32),
+			StateRoot:     bytesutil.PadTo([]byte("A"), 32),
 		},
 	}
 	var err error
@@ -149,7 +157,9 @@ func TestProcessProposerSlashings_AppliesCorrectStatus(t *testing.T) {
 		Header: &ethpb.BeaconBlockHeader{
 			ProposerIndex: proposerIdx,
 			Slot:          0,
-			StateRoot:     []byte("B"),
+			ParentRoot:    make([]byte, 32),
+			BodyRoot:      make([]byte, 32),
+			StateRoot:     bytesutil.PadTo([]byte("B"), 32),
 		},
 	}
 	header2.Signature, err = helpers.ComputeDomainAndSign(beaconState, 0, header2.Header, params.BeaconConfig().DomainBeaconProposer, privKeys[proposerIdx])
@@ -162,13 +172,10 @@ func TestProcessProposerSlashings_AppliesCorrectStatus(t *testing.T) {
 		},
 	}
 
-	block := &ethpb.BeaconBlock{
-		Body: &ethpb.BeaconBlockBody{
-			ProposerSlashings: slashings,
-		},
-	}
+	block := testutil.NewBeaconBlock()
+	block.Block.Body.ProposerSlashings = slashings
 
-	newState, err := blocks.ProcessProposerSlashings(context.Background(), beaconState, block.Body)
+	newState, err := blocks.ProcessProposerSlashings(context.Background(), beaconState, block)
 	require.NoError(t, err)
 
 	newStateVals := newState.Validators()
@@ -177,3 +184,125 @@ func TestProcessProposerSlashings_AppliesCorrectStatus(t *testing.T) {
 			newStateVals[1].ExitEpoch, beaconState.Validators()[1].ExitEpoch)
 	}
 }
+
+func TestVerifyProposerSlashing(t *testing.T) {
+	type args struct {
+		beaconState *stateTrie.BeaconState
+		slashing    *ethpb.ProposerSlashing
+	}
+
+	beaconState, sks := testutil.DeterministicGenesisState(t, 2)
+	currentSlot := uint64(0)
+	require.NoError(t, beaconState.SetSlot(currentSlot))
+
+	tests := []struct {
+		name    string
+		args    args
+		wantErr string
+	}{
+		{
+			name: "same header, same slot as state",
+			args: args{
+				slashing: &ethpb.ProposerSlashing{
+					Header_1: &ethpb.SignedBeaconBlockHeader{
+						Header: &ethpb.BeaconBlockHeader{
+							ProposerIndex: 1,
+							Slot:          currentSlot,
+							StateRoot:     bytesutil.PadTo([]byte{}, 32),
+							BodyRoot:      bytesutil.PadTo([]byte{}, 32),
+							ParentRoot:    bytesutil.PadTo([]byte{}, 32),
+						},
+					},
+					Header_2: &ethpb.SignedBeaconBlockHeader{
+						Header: &ethpb.BeaconBlockHeader{
+							ProposerIndex: 1,
+							Slot:          currentSlot,
+							StateRoot:     bytesutil.PadTo([]byte{}, 32),
+							BodyRoot:      bytesutil.PadTo([]byte{}, 32),
+							ParentRoot:    bytesutil.PadTo([]byte{}, 32),
+						},
+					},
+				},
+				beaconState: beaconState,
+			},
+			wantErr: "expected slashing headers to differ",
+		},
+		{ // Regression test for https://github.com/sigp/beacon-fuzz/issues/74
+			name: "same header, different signatures",
+			args: args{
+				slashing: &ethpb.ProposerSlashing{
+					Header_1: &ethpb.SignedBeaconBlockHeader{
+						Header: &ethpb.BeaconBlockHeader{
+							ProposerIndex: 1,
+							Slot:          0,
+							StateRoot:     bytesutil.PadTo([]byte{}, 32),
+							BodyRoot:      bytesutil.PadTo([]byte{}, 32),
+							ParentRoot:    bytesutil.PadTo([]byte{}, 32),
+						},
+						Signature: bls.RandKey().Sign([]byte("foo")).Marshal(),
+					},
+					Header_2: &ethpb.SignedBeaconBlockHeader{
+						Header: &ethpb.BeaconBlockHeader{
+							ProposerIndex: 1,
+							Slot:          0,
+							StateRoot:     bytesutil.PadTo([]byte{}, 32),
+							BodyRoot:      bytesutil.PadTo([]byte{}, 32),
+							ParentRoot:    bytesutil.PadTo([]byte{}, 32),
+						},
+						Signature: bls.RandKey().Sign([]byte("bar")).Marshal(),
+					},
+				},
+				beaconState: beaconState,
+			},
+			wantErr: "expected slashing headers to differ",
+		},
+		{
+			name: "slashing in future epoch",
+			args: args{
+				slashing: &ethpb.ProposerSlashing{
+					Header_1: &ethpb.SignedBeaconBlockHeader{
+						Header: &ethpb.BeaconBlockHeader{
+							ProposerIndex: 1,
+							Slot:          65,
+							StateRoot:     bytesutil.PadTo([]byte{}, 32),
+							BodyRoot:      bytesutil.PadTo([]byte{}, 32),
+							ParentRoot:    bytesutil.PadTo([]byte("foo"), 32),
+						},
+					},
+					Header_2: &ethpb.SignedBeaconBlockHeader{
+						Header: &ethpb.BeaconBlockHeader{
+							ProposerIndex: 1,
+							Slot:          65,
+							StateRoot:     bytesutil.PadTo([]byte{}, 32),
+							BodyRoot:      bytesutil.PadTo([]byte{}, 32),
+							ParentRoot:    bytesutil.PadTo([]byte("bar"), 32),
+						},
+					},
+				},
+				beaconState: beaconState,
+			},
+			wantErr: "",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			testutil.ResetCache()
+			sk := sks[tt.args.slashing.Header_1.Header.ProposerIndex]
+			d, err := helpers.Domain(tt.args.beaconState.Fork(), helpers.SlotToEpoch(tt.args.slashing.Header_1.Header.Slot), params.BeaconConfig().DomainBeaconProposer, tt.args.beaconState.GenesisValidatorRoot())
+			require.NoError(t, err)
+			if tt.args.slashing.Header_1.Signature == nil {
+				sr, err := helpers.ComputeSigningRoot(tt.args.slashing.Header_1.Header, d)
+				require.NoError(t, err)
+				tt.args.slashing.Header_1.Signature = sk.Sign(sr[:]).Marshal()
+			}
+			if tt.args.slashing.Header_2.Signature == nil {
+				sr, err := helpers.ComputeSigningRoot(tt.args.slashing.Header_2.Header, d)
+				require.NoError(t, err)
+				tt.args.slashing.Header_2.Signature = sk.Sign(sr[:]).Marshal()
+			}
+			if err := blocks.VerifyProposerSlashing(tt.args.beaconState, tt.args.slashing); (err != nil || tt.wantErr != "") && err.Error() != tt.wantErr {
+				t.Errorf("VerifyProposerSlashing() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}

beacon-chain/core/blocks/randao.go

@@ -1,6 +1,8 @@
 package blocks
 
 import (
+	"context"
+
 	"github.com/pkg/errors"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
@@ -24,14 +26,20 @@ import (
 //    mix = xor(get_randao_mix(state, epoch), hash(body.randao_reveal))
 //    state.randao_mixes[epoch % EPOCHS_PER_HISTORICAL_VECTOR] = mix
 func ProcessRandao(
+	ctx context.Context,
 	beaconState *stateTrie.BeaconState,
-	body *ethpb.BeaconBlockBody,
+	b *ethpb.SignedBeaconBlock,
 ) (*stateTrie.BeaconState, error) {
+	if b.Block == nil || b.Block.Body == nil {
+		return nil, errors.New("block and block body can't be nil")
+	}
+
+	body := b.Block.Body
 	buf, proposerPub, domain, err := randaoSigningData(beaconState)
 	if err != nil {
 		return nil, err
 	}
-	if err := verifySignature(buf, proposerPub[:], body.RandaoReveal, domain); err != nil {
+	if err := verifySignature(buf, proposerPub, body.RandaoReveal, domain); err != nil {
 		return nil, errors.Wrap(err, "could not verify block randao")
 	}
 

beacon-chain/core/blocks/randao_test.go

@@ -2,11 +2,11 @@ package blocks_test
 
 import (
 	"bytes"
+	"context"
 	"encoding/binary"
 	"testing"
 
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
@@ -26,18 +26,19 @@ func TestProcessRandao_IncorrectProposerFailsVerification(t *testing.T) {
 	binary.LittleEndian.PutUint64(buf, epoch)
 	domain, err := helpers.Domain(beaconState.Fork(), epoch, params.BeaconConfig().DomainRandao, beaconState.GenesisValidatorRoot())
 	require.NoError(t, err)
-	root, err := ssz.HashTreeRoot(&pb.SigningData{ObjectRoot: buf, Domain: domain})
+	root, err := (&pb.SigningData{ObjectRoot: buf, Domain: domain}).HashTreeRoot()
 	require.NoError(t, err)
 	// We make the previous validator's index sign the message instead of the proposer.
 	epochSignature := privKeys[proposerIdx-1].Sign(root[:])
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			RandaoReveal: epochSignature.Marshal(),
 		},
 	}
 
 	want := "block randao: signature did not verify"
-	_, err = blocks.ProcessRandao(beaconState, block.Body)
+	_, err = blocks.ProcessRandao(context.Background(), beaconState, b)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -48,15 +49,17 @@ func TestProcessRandao_SignatureVerifiesAndUpdatesLatestStateMixes(t *testing.T)
 	epochSignature, err := testutil.RandaoReveal(beaconState, epoch, privKeys)
 	require.NoError(t, err)
 
-	block := &ethpb.BeaconBlock{
+	b := testutil.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
 		Body: &ethpb.BeaconBlockBody{
 			RandaoReveal: epochSignature,
 		},
 	}
 
 	newState, err := blocks.ProcessRandao(
+		context.Background(),
 		beaconState,
-		block.Body,
+		b,
 	)
 	require.NoError(t, err, "Unexpected error processing block randao")
 	currentEpoch := helpers.CurrentEpoch(beaconState)

beacon-chain/core/blocks/signature.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/pkg/errors"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
@@ -21,20 +20,16 @@ func retrieveSignatureSet(signedData []byte, pub []byte, signature []byte, domai
 	if err != nil {
 		return nil, errors.Wrap(err, "could not convert bytes to public key")
 	}
-	sig, err := bls.SignatureFromBytes(signature)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not convert bytes to signature")
-	}
 	signingData := &pb.SigningData{
 		ObjectRoot: signedData,
 		Domain:     domain,
 	}
-	root, err := ssz.HashTreeRoot(signingData)
+	root, err := signingData.HashTreeRoot()
 	if err != nil {
 		return nil, errors.Wrap(err, "could not hash container")
 	}
 	return &bls.SignatureSet{
-		Signatures: []bls.Signature{sig},
+		Signatures: [][]byte{signature},
 		PublicKeys: []bls.PublicKey{publicKey},
 		Messages:   [][32]byte{root},
 	}, nil
@@ -53,7 +48,11 @@ func verifySignature(signedData []byte, pub []byte, signature []byte, domain []b
 	sig := set.Signatures[0]
 	publicKey := set.PublicKeys[0]
 	root := set.Messages[0]
-	if !sig.Verify(publicKey, root[:]) {
+	rSig, err := bls.SignatureFromBytes(sig)
+	if err != nil {
+		return err
+	}
+	if !rSig.Verify(publicKey, root[:]) {
 		return helpers.ErrSigFailedToVerify
 	}
 	return nil
@@ -71,7 +70,7 @@ func VerifyBlockSignature(beaconState *stateTrie.BeaconState, block *ethpb.Signe
 		return err
 	}
 	proposerPubKey := proposer.PublicKey
-	return helpers.VerifyBlockSigningRoot(block.Block, proposerPubKey[:], block.Signature, domain)
+	return helpers.VerifyBlockSigningRoot(block.Block, proposerPubKey, block.Signature, domain)
 }
 
 // BlockSignatureSet retrieves the block signature set from the provided block and its corresponding state.
@@ -98,7 +97,7 @@ func RandaoSignatureSet(beaconState *stateTrie.BeaconState,
 	if err != nil {
 		return nil, nil, err
 	}
-	set, err := retrieveSignatureSet(buf, proposerPub[:], body.RandaoReveal, domain)
+	set, err := retrieveSignatureSet(buf, proposerPub, body.RandaoReveal, domain)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -130,15 +129,11 @@ func createAttestationSignatureSet(ctx context.Context, beaconState *stateTrie.B
 		return nil, nil
 	}
 
-	sigs := make([]bls.Signature, len(atts))
+	sigs := make([][]byte, len(atts))
 	pks := make([]bls.PublicKey, len(atts))
 	msgs := make([][32]byte, len(atts))
 	for i, a := range atts {
-		sig, err := bls.SignatureFromBytes(a.Signature)
-		if err != nil {
-			return nil, err
-		}
-		sigs[i] = sig
+		sigs[i] = a.Signature
 		c, err := helpers.BeaconCommitteeFromState(beaconState, a.Data.Slot, a.Data.CommitteeIndex)
 		if err != nil {
 			return nil, err
@@ -148,20 +143,16 @@ func createAttestationSignatureSet(ctx context.Context, beaconState *stateTrie.B
 			return nil, err
 		}
 		indices := ia.AttestingIndices
-		var pk bls.PublicKey
+		pubkeys := make([][]byte, len(indices))
 		for i := 0; i < len(indices); i++ {
 			pubkeyAtIdx := beaconState.PubkeyAtIndex(indices[i])
-			p, err := bls.PublicKeyFromBytes(pubkeyAtIdx[:])
-			if err != nil {
-				return nil, errors.Wrap(err, "could not deserialize validator public key")
-			}
-			if pk == nil {
-				pk = p
-			} else {
-				pk.Aggregate(p)
-			}
+			pubkeys[i] = pubkeyAtIdx[:]
 		}
-		pks[i] = pk
+		aggP, err := bls.AggregatePublicKeys(pubkeys)
+		if err != nil {
+			return nil, err
+		}
+		pks[i] = aggP
 
 		root, err := helpers.ComputeSigningRoot(ia.Data, domain)
 		if err != nil {

beacon-chain/core/blocks/spectest/block_header_test.go

@@ -41,8 +41,8 @@ func runBlockHeaderTest(t *testing.T, config string) {
 			postSSZExists := true
 			if err != nil && strings.Contains(err.Error(), "could not locate file") {
 				postSSZExists = false
-			} else if err != nil {
-				t.Fatal(err)
+			} else {
+				require.NoError(t, err)
 			}
 
 			// Spectest blocks are not signed, so we'll call NoVerify to skip sig verification.

beacon-chain/core/blocks/spectest/deposit_test.go

@@ -1,13 +1,11 @@
 package spectest
 
 import (
-	"context"
 	"path"
 	"testing"
 
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/shared/params/spectest"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
@@ -26,9 +24,7 @@ func runDepositTest(t *testing.T, config string) {
 			require.NoError(t, deposit.UnmarshalSSZ(depositFile), "Failed to unmarshal")
 
 			body := &ethpb.BeaconBlockBody{Deposits: []*ethpb.Deposit{deposit}}
-			testutil.RunBlockOperationTest(t, folderPath, body, func(ctx context.Context, state *state.BeaconState, body *ethpb.BeaconBlockBody) (*state.BeaconState, error) {
-				return blocks.ProcessDeposits(ctx, state, body.Deposits)
-			})
+			testutil.RunBlockOperationTest(t, folderPath, body, blocks.ProcessDeposits)
 		})
 	}
 }

beacon-chain/core/epoch/BUILD.bazel

@@ -16,7 +16,6 @@ go_library(
         "//shared/params:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prysmaticlabs_ethereumapis//eth/v1alpha1:go_default_library",
-        "@com_github_prysmaticlabs_go_ssz//:go_default_library",
     ],
 )
 
@@ -33,6 +32,7 @@ go_test(
         "//beacon-chain/state:go_default_library",
         "//proto/beacon/p2p/v1:go_default_library",
         "//shared/params:go_default_library",
+        "//shared/testutil:go_default_library",
         "//shared/testutil/assert:go_default_library",
         "//shared/testutil/require:go_default_library",
         "@com_github_gogo_protobuf//proto:go_default_library",

beacon-chain/core/epoch/epoch_processing.go

@@ -10,7 +10,6 @@ import (
 
 	"github.com/pkg/errors"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/validators"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
@@ -46,7 +45,7 @@ func (s sortableIndices) Less(i, j int) bool {
 //  def get_attesting_balance(state: BeaconState, attestations: List[PendingAttestation]) -> Gwei:
 //    return get_total_balance(state, get_unslashed_attesting_indices(state, attestations))
 func AttestingBalance(state *stateTrie.BeaconState, atts []*pb.PendingAttestation) (uint64, error) {
-	indices, err := unslashedAttestingIndices(state, atts)
+	indices, err := UnslashedAttestingIndices(state, atts)
 	if err != nil {
 		return 0, errors.Wrap(err, "could not get attesting indices")
 	}
@@ -148,10 +147,11 @@ func ProcessRegistryUpdates(state *stateTrie.BeaconState) (*stateTrie.BeaconStat
 //  def process_slashings(state: BeaconState) -> None:
 //    epoch = get_current_epoch(state)
 //    total_balance = get_total_active_balance(state)
+//    adjusted_total_slashing_balance = min(sum(state.slashings) * PROPORTIONAL_SLASHING_MULTIPLIER, total_balance)
 //    for index, validator in enumerate(state.validators):
 //        if validator.slashed and epoch + EPOCHS_PER_SLASHINGS_VECTOR // 2 == validator.withdrawable_epoch:
 //            increment = EFFECTIVE_BALANCE_INCREMENT  # Factored out from penalty numerator to avoid uint64 overflow
-//			  penalty_numerator = validator.effective_balance // increment * min(sum(state.slashings) * 3, total_balance)
+//			  penalty_numerator = validator.effective_balance // increment * adjusted_total_slashing_balance
 //            penalty = penalty_numerator // total_balance * increment
 //            decrease_balance(state, ValidatorIndex(index), penalty)
 func ProcessSlashings(state *stateTrie.BeaconState) (*stateTrie.BeaconState, error) {
@@ -174,10 +174,10 @@ func ProcessSlashings(state *stateTrie.BeaconState) (*stateTrie.BeaconState, err
 	// a callback is used here to apply the following actions  to all validators
 	// below equally.
 	increment := params.BeaconConfig().EffectiveBalanceIncrement
+	minSlashing := mathutil.Min(totalSlashing*params.BeaconConfig().ProportionalSlashingMultiplier, totalBalance)
 	err = state.ApplyToEveryValidator(func(idx int, val *ethpb.Validator) (bool, error) {
 		correctEpoch := (currentEpoch + exitLength/2) == val.WithdrawableEpoch
 		if val.Slashed && correctEpoch {
-			minSlashing := mathutil.Min(totalSlashing*3, totalBalance)
 			penaltyNumerator := val.EffectiveBalance / increment * minSlashing
 			penalty := penaltyNumerator / totalBalance * increment
 			if err := helpers.DecreaseBalance(state, uint64(idx), penalty); err != nil {
@@ -311,7 +311,7 @@ func ProcessFinalUpdates(state *stateTrie.BeaconState) (*stateTrie.BeaconState,
 			BlockRoots: state.BlockRoots(),
 			StateRoots: state.StateRoots(),
 		}
-		batchRoot, err := ssz.HashTreeRoot(historicalBatch)
+		batchRoot, err := historicalBatch.HashTreeRoot()
 		if err != nil {
 			return nil, errors.Wrap(err, "could not hash historical batch")
 		}
@@ -330,7 +330,7 @@ func ProcessFinalUpdates(state *stateTrie.BeaconState) (*stateTrie.BeaconState,
 	return state, nil
 }
 
-// unslashedAttestingIndices returns all the attesting indices from a list of attestations,
+// UnslashedAttestingIndices returns all the attesting indices from a list of attestations,
 // it sorts the indices and filters out the slashed ones.
 //
 // Spec pseudocode definition:
@@ -340,7 +340,7 @@ func ProcessFinalUpdates(state *stateTrie.BeaconState) (*stateTrie.BeaconState,
 //    for a in attestations:
 //        output = output.union(get_attesting_indices(state, a.data, a.aggregation_bits))
 //    return set(filter(lambda index: not state.validators[index].slashed, output))
-func unslashedAttestingIndices(state *stateTrie.BeaconState, atts []*pb.PendingAttestation) ([]uint64, error) {
+func UnslashedAttestingIndices(state *stateTrie.BeaconState, atts []*pb.PendingAttestation) ([]uint64, error) {
 	var setIndices []uint64
 	seen := make(map[uint64]bool)
 

beacon-chain/core/epoch/epoch_processing_fuzz_test.go

@@ -18,5 +18,6 @@ func TestFuzzFinalUpdates_10000(t *testing.T) {
 		s, err := beaconstate.InitializeFromProtoUnsafe(base)
 		require.NoError(t, err)
 		_, err = ProcessFinalUpdates(s)
+		_ = err
 	}
 }

beacon-chain/core/epoch/epoch_processing_test.go

@@ -1,16 +1,17 @@
-package epoch
+package epoch_test
 
 import (
-	"bytes"
 	"testing"
 
 	"github.com/gogo/protobuf/proto"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/go-bitfield"
+	"github.com/prysmaticlabs/prysm/beacon-chain/core/epoch"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/params"
+	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
 )
@@ -20,8 +21,8 @@ func TestUnslashedAttestingIndices_CanSortAndFilter(t *testing.T) {
 	atts := make([]*pb.PendingAttestation, 2)
 	for i := 0; i < len(atts); i++ {
 		atts[i] = &pb.PendingAttestation{
-			Data: &ethpb.AttestationData{Source: &ethpb.Checkpoint{},
-				Target: &ethpb.Checkpoint{Epoch: 0},
+			Data: &ethpb.AttestationData{Source: &ethpb.Checkpoint{Root: make([]byte, 32)},
+				Target: &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, 32)},
 			},
 			AggregationBits: bitfield.Bitlist{0xFF, 0xFF, 0xFF},
 		}
@@ -42,7 +43,7 @@ func TestUnslashedAttestingIndices_CanSortAndFilter(t *testing.T) {
 	state, err := state.InitializeFromProto(base)
 	require.NoError(t, err)
 
-	indices, err := unslashedAttestingIndices(state, atts)
+	indices, err := epoch.UnslashedAttestingIndices(state, atts)
 	require.NoError(t, err)
 	for i := 0; i < len(indices)-1; i++ {
 		if indices[i] >= indices[i+1] {
@@ -55,7 +56,7 @@ func TestUnslashedAttestingIndices_CanSortAndFilter(t *testing.T) {
 	validators = state.Validators()
 	validators[slashedValidator].Slashed = true
 	require.NoError(t, state.SetValidators(validators))
-	indices, err = unslashedAttestingIndices(state, atts)
+	indices, err = epoch.UnslashedAttestingIndices(state, atts)
 	require.NoError(t, err)
 	for i := 0; i < len(indices); i++ {
 		assert.NotEqual(t, slashedValidator, indices[i], "Slashed validator %d is not filtered", slashedValidator)
@@ -67,7 +68,7 @@ func TestUnslashedAttestingIndices_DuplicatedAttestations(t *testing.T) {
 	atts := make([]*pb.PendingAttestation, 5)
 	for i := 0; i < len(atts); i++ {
 		atts[i] = &pb.PendingAttestation{
-			Data: &ethpb.AttestationData{Source: &ethpb.Checkpoint{},
+			Data: &ethpb.AttestationData{Source: &ethpb.Checkpoint{Root: make([]byte, 32)},
 				Target: &ethpb.Checkpoint{Epoch: 0}},
 			AggregationBits: bitfield.Bitlist{0xFF, 0xFF, 0xFF},
 		}
@@ -88,7 +89,7 @@ func TestUnslashedAttestingIndices_DuplicatedAttestations(t *testing.T) {
 	state, err := state.InitializeFromProto(base)
 	require.NoError(t, err)
 
-	indices, err := unslashedAttestingIndices(state, atts)
+	indices, err := epoch.UnslashedAttestingIndices(state, atts)
 	require.NoError(t, err)
 
 	for i := 0; i < len(indices)-1; i++ {
@@ -105,8 +106,8 @@ func TestAttestingBalance_CorrectBalance(t *testing.T) {
 	for i := 0; i < len(atts); i++ {
 		atts[i] = &pb.PendingAttestation{
 			Data: &ethpb.AttestationData{
-				Target: &ethpb.Checkpoint{},
-				Source: &ethpb.Checkpoint{},
+				Target: &ethpb.Checkpoint{Root: make([]byte, 32)},
+				Source: &ethpb.Checkpoint{Root: make([]byte, 32)},
 				Slot:   uint64(i),
 			},
 			AggregationBits: bitfield.Bitlist{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
@@ -134,7 +135,7 @@ func TestAttestingBalance_CorrectBalance(t *testing.T) {
 	state, err := state.InitializeFromProto(base)
 	require.NoError(t, err)
 
-	balance, err := AttestingBalance(state, atts)
+	balance, err := epoch.AttestingBalance(state, atts)
 	require.NoError(t, err)
 	wanted := 256 * params.BeaconConfig().MaxEffectiveBalance
 	assert.Equal(t, wanted, balance)
@@ -159,9 +160,9 @@ func TestBaseReward_AccurateRewards(t *testing.T) {
 		}
 		state, err := state.InitializeFromProto(base)
 		require.NoError(t, err)
-		c, err := BaseReward(state, 0)
+		c, err := epoch.BaseReward(state, 0)
 		require.NoError(t, err)
-		assert.Equal(t, tt.c, c, "BaseReward(%d)", tt.a)
+		assert.Equal(t, tt.c, c, "epoch.BaseReward(%d)", tt.a)
 	}
 }
 
@@ -174,7 +175,7 @@ func TestProcessSlashings_NotSlashed(t *testing.T) {
 	}
 	s, err := state.InitializeFromProto(base)
 	require.NoError(t, err)
-	newState, err := ProcessSlashings(s)
+	newState, err := epoch.ProcessSlashings(s)
 	require.NoError(t, err)
 	wanted := params.BeaconConfig().MaxEffectiveBalance
 	assert.Equal(t, wanted, newState.Balances()[0], "Unexpected slashed balance")
@@ -252,7 +253,7 @@ func TestProcessSlashings_SlashedLess(t *testing.T) {
 			original := proto.Clone(tt.state)
 			s, err := state.InitializeFromProto(tt.state)
 			require.NoError(t, err)
-			newState, err := ProcessSlashings(s)
+			newState, err := epoch.ProcessSlashings(s)
 			require.NoError(t, err)
 			assert.Equal(t, tt.want, newState.Balances()[0], "ProcessSlashings({%v}) = newState; newState.Balances[0] = %d", original, newState.Balances()[0])
 		})
@@ -260,7 +261,7 @@ func TestProcessSlashings_SlashedLess(t *testing.T) {
 }
 
 func TestProcessFinalUpdates_CanProcess(t *testing.T) {
-	s := buildState(params.BeaconConfig().SlotsPerHistoricalRoot-1, params.BeaconConfig().SlotsPerEpoch)
+	s := buildState(t, params.BeaconConfig().SlotsPerHistoricalRoot-1, params.BeaconConfig().SlotsPerEpoch)
 	ce := helpers.CurrentEpoch(s)
 	ne := ce + 1
 	require.NoError(t, s.SetEth1DataVotes([]*ethpb.Eth1Data{}))
@@ -275,7 +276,7 @@ func TestProcessFinalUpdates_CanProcess(t *testing.T) {
 	mixes := s.RandaoMixes()
 	mixes[ce] = []byte{'A'}
 	require.NoError(t, s.SetRandaoMixes(mixes))
-	newS, err := ProcessFinalUpdates(s)
+	newS, err := epoch.ProcessFinalUpdates(s)
 	require.NoError(t, err)
 
 	// Verify effective balance is correctly updated.
@@ -286,9 +287,9 @@ func TestProcessFinalUpdates_CanProcess(t *testing.T) {
 	assert.Equal(t, newS.Slashings()[ce], newS.Slashings()[ne], "Unexpected slashed balance")
 
 	// Verify randao is correctly updated in the right position.
-	if mix, err := newS.RandaoMixAtIndex(ne); err != nil || bytes.Equal(mix, params.BeaconConfig().ZeroHash[:]) {
-		t.Error("latest RANDAO still zero hashes")
-	}
+	mix, err := newS.RandaoMixAtIndex(ne)
+	assert.NoError(t, err)
+	assert.DeepNotEqual(t, params.BeaconConfig().ZeroHash[:], mix, "latest RANDAO still zero hashes")
 
 	// Verify historical root accumulator was appended.
 	assert.Equal(t, 1, len(newS.HistoricalRoots()), "Unexpected slashed balance")
@@ -306,11 +307,11 @@ func TestProcessRegistryUpdates_NoRotation(t *testing.T) {
 			params.BeaconConfig().MaxEffectiveBalance,
 			params.BeaconConfig().MaxEffectiveBalance,
 		},
-		FinalizedCheckpoint: &ethpb.Checkpoint{},
+		FinalizedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)},
 	}
 	state, err := state.InitializeFromProto(base)
 	require.NoError(t, err)
-	newState, err := ProcessRegistryUpdates(state)
+	newState, err := epoch.ProcessRegistryUpdates(state)
 	require.NoError(t, err)
 	for i, validator := range newState.Validators() {
 		assert.Equal(t, params.BeaconConfig().MaxSeedLookahead, validator.ExitEpoch, "Could not update registry %d", i)
@@ -320,7 +321,7 @@ func TestProcessRegistryUpdates_NoRotation(t *testing.T) {
 func TestProcessRegistryUpdates_EligibleToActivate(t *testing.T) {
 	base := &pb.BeaconState{
 		Slot:                5 * params.BeaconConfig().SlotsPerEpoch,
-		FinalizedCheckpoint: &ethpb.Checkpoint{Epoch: 6},
+		FinalizedCheckpoint: &ethpb.Checkpoint{Epoch: 6, Root: make([]byte, 32)},
 	}
 	limit, err := helpers.ValidatorChurnLimit(0)
 	require.NoError(t, err)
@@ -332,8 +333,9 @@ func TestProcessRegistryUpdates_EligibleToActivate(t *testing.T) {
 		})
 	}
 	state, err := state.InitializeFromProto(base)
+	require.NoError(t, err)
 	currentEpoch := helpers.CurrentEpoch(state)
-	newState, err := ProcessRegistryUpdates(state)
+	newState, err := epoch.ProcessRegistryUpdates(state)
 	require.NoError(t, err)
 	for i, validator := range newState.Validators() {
 		assert.Equal(t, currentEpoch+1, validator.ActivationEligibilityEpoch, "Could not update registry %d, unexpected activation eligibility epoch", i)
@@ -357,11 +359,11 @@ func TestProcessRegistryUpdates_ActivationCompletes(t *testing.T) {
 			{ExitEpoch: params.BeaconConfig().MaxSeedLookahead,
 				ActivationEpoch: 5 + params.BeaconConfig().MaxSeedLookahead + 1},
 		},
-		FinalizedCheckpoint: &ethpb.Checkpoint{},
+		FinalizedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)},
 	}
 	state, err := state.InitializeFromProto(base)
 	require.NoError(t, err)
-	newState, err := ProcessRegistryUpdates(state)
+	newState, err := epoch.ProcessRegistryUpdates(state)
 	require.NoError(t, err)
 	for i, validator := range newState.Validators() {
 		assert.Equal(t, params.BeaconConfig().MaxSeedLookahead, validator.ExitEpoch, "Could not update registry %d, unexpected exit slot", i)
@@ -381,11 +383,11 @@ func TestProcessRegistryUpdates_ValidatorsEjected(t *testing.T) {
 				EffectiveBalance: params.BeaconConfig().EjectionBalance - 1,
 			},
 		},
-		FinalizedCheckpoint: &ethpb.Checkpoint{},
+		FinalizedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)},
 	}
 	state, err := state.InitializeFromProto(base)
 	require.NoError(t, err)
-	newState, err := ProcessRegistryUpdates(state)
+	newState, err := epoch.ProcessRegistryUpdates(state)
 	require.NoError(t, err)
 	for i, validator := range newState.Validators() {
 		assert.Equal(t, params.BeaconConfig().MaxSeedLookahead+1, validator.ExitEpoch, "Could not update registry %d, unexpected exit slot", i)
@@ -393,11 +395,11 @@ func TestProcessRegistryUpdates_ValidatorsEjected(t *testing.T) {
 }
 
 func TestProcessRegistryUpdates_CanExits(t *testing.T) {
-	epoch := uint64(5)
-	exitEpoch := helpers.ActivationExitEpoch(epoch)
+	e := uint64(5)
+	exitEpoch := helpers.ActivationExitEpoch(e)
 	minWithdrawalDelay := params.BeaconConfig().MinValidatorWithdrawabilityDelay
 	base := &pb.BeaconState{
-		Slot: epoch * params.BeaconConfig().SlotsPerEpoch,
+		Slot: e * params.BeaconConfig().SlotsPerEpoch,
 		Validators: []*ethpb.Validator{
 			{
 				ExitEpoch:         exitEpoch,
@@ -406,18 +408,18 @@ func TestProcessRegistryUpdates_CanExits(t *testing.T) {
 				ExitEpoch:         exitEpoch,
 				WithdrawableEpoch: exitEpoch + minWithdrawalDelay},
 		},
-		FinalizedCheckpoint: &ethpb.Checkpoint{},
+		FinalizedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)},
 	}
 	state, err := state.InitializeFromProto(base)
 	require.NoError(t, err)
-	newState, err := ProcessRegistryUpdates(state)
+	newState, err := epoch.ProcessRegistryUpdates(state)
 	require.NoError(t, err)
 	for i, validator := range newState.Validators() {
 		assert.Equal(t, exitEpoch, validator.ExitEpoch, "Could not update registry %d, unexpected exit slot", i)
 	}
 }
 
-func buildState(slot uint64, validatorCount uint64) *state.BeaconState {
+func buildState(t testing.TB, slot uint64, validatorCount uint64) *state.BeaconState {
 	validators := make([]*ethpb.Validator, validatorCount)
 	for i := 0; i < len(validators); i++ {
 		validators[i] = &ethpb.Validator{
@@ -443,19 +445,15 @@ func buildState(slot uint64, validatorCount uint64) *state.BeaconState {
 	for i := 0; i < len(latestRandaoMixes); i++ {
 		latestRandaoMixes[i] = params.BeaconConfig().ZeroHash[:]
 	}
-	s, err := state.InitializeFromProto(&pb.BeaconState{
-		Slot:                        slot,
-		Balances:                    validatorBalances,
-		Validators:                  validators,
-		RandaoMixes:                 make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-		Slashings:                   make([]uint64, params.BeaconConfig().EpochsPerSlashingsVector),
-		BlockRoots:                  make([][]byte, params.BeaconConfig().SlotsPerEpoch*10),
-		FinalizedCheckpoint:         &ethpb.Checkpoint{},
-		PreviousJustifiedCheckpoint: &ethpb.Checkpoint{},
-		CurrentJustifiedCheckpoint:  &ethpb.Checkpoint{},
-	})
-	if err != nil {
-		panic(err)
+	s := testutil.NewBeaconState()
+	if err := s.SetSlot(slot); err != nil {
+		t.Error(err)
+	}
+	if err := s.SetBalances(validatorBalances); err != nil {
+		t.Error(err)
+	}
+	if err := s.SetValidators(validators); err != nil {
+		t.Error(err)
 	}
 	return s
 }

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

@@ -178,8 +178,7 @@ func TestProcessAttestations(t *testing.T) {
 	for i := 0; i < len(pVals); i++ {
 		pVals[i] = &precompute.Validator{CurrentEpochEffectiveBalance: 100}
 	}
-	pBal := &precompute.Balance{}
-	pVals, pBal, err = precompute.ProcessAttestations(context.Background(), beaconState, pVals, pBal)
+	pVals, _, err = precompute.ProcessAttestations(context.Background(), beaconState, pVals, &precompute.Balance{})
 	require.NoError(t, err)
 
 	committee, err := helpers.BeaconCommitteeFromState(beaconState, att1.Data.Slot, att1.Data.CommitteeIndex)

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

@@ -49,7 +49,11 @@ import (
 //    if all(bits[0:2]) and old_current_justified_checkpoint.epoch + 1 == current_epoch:
 //        state.finalized_checkpoint = old_current_justified_checkpoint
 func ProcessJustificationAndFinalizationPreCompute(state *stateTrie.BeaconState, pBal *Balance) (*stateTrie.BeaconState, error) {
-	if state.Slot() <= helpers.StartSlot(2) {
+	canProcessSlot, err := helpers.StartSlot(2 /*epoch*/)
+	if err != nil {
+		return nil, err
+	}
+	if state.Slot() <= canProcessSlot {
 		return state, nil
 	}
 

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

@@ -30,7 +30,7 @@ func TestProcessJustificationAndFinalizationPreCompute_ConsecutiveEpochs(t *test
 			Epoch: 0,
 			Root:  params.BeaconConfig().ZeroHash[:],
 		},
-		FinalizedCheckpoint: &ethpb.Checkpoint{},
+		FinalizedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)},
 		JustificationBits:   bitfield.Bitvector4{0x0F}, // 0b1111
 		Validators:          []*ethpb.Validator{{ExitEpoch: e}, {ExitEpoch: e}, {ExitEpoch: e}, {ExitEpoch: e}},
 		Balances:            []uint64{a, a, a, a}, // validator total balance should be 128000000000
@@ -67,7 +67,7 @@ func TestProcessJustificationAndFinalizationPreCompute_JustifyCurrentEpoch(t *te
 			Epoch: 0,
 			Root:  params.BeaconConfig().ZeroHash[:],
 		},
-		FinalizedCheckpoint: &ethpb.Checkpoint{},
+		FinalizedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)},
 		JustificationBits:   bitfield.Bitvector4{0x03}, // 0b0011
 		Validators:          []*ethpb.Validator{{ExitEpoch: e}, {ExitEpoch: e}, {ExitEpoch: e}, {ExitEpoch: e}},
 		Balances:            []uint64{a, a, a, a}, // validator total balance should be 128000000000
@@ -107,7 +107,7 @@ func TestProcessJustificationAndFinalizationPreCompute_JustifyPrevEpoch(t *testi
 		JustificationBits: bitfield.Bitvector4{0x03}, // 0b0011
 		Validators:        []*ethpb.Validator{{ExitEpoch: e}, {ExitEpoch: e}, {ExitEpoch: e}, {ExitEpoch: e}},
 		Balances:          []uint64{a, a, a, a}, // validator total balance should be 128000000000
-		BlockRoots:        blockRoots, FinalizedCheckpoint: &ethpb.Checkpoint{},
+		BlockRoots:        blockRoots, FinalizedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)},
 	}
 	state, err := beaconstate.InitializeFromProto(base)
 	require.NoError(t, err)

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

@@ -24,8 +24,8 @@ func TestProcessRewardsAndPenaltiesPrecompute(t *testing.T) {
 	for i := 0; i < len(atts); i++ {
 		atts[i] = &pb.PendingAttestation{
 			Data: &ethpb.AttestationData{
-				Target: &ethpb.Checkpoint{},
-				Source: &ethpb.Checkpoint{},
+				Target: &ethpb.Checkpoint{Root: make([]byte, 32)},
+				Source: &ethpb.Checkpoint{Root: make([]byte, 32)},
 			},
 			AggregationBits: bitfield.Bitlist{0xC0, 0xC0, 0xC0, 0xC0, 0x01},
 			InclusionDelay:  1,
@@ -202,7 +202,7 @@ func TestAttestationDeltas_ZeroInclusionDelay(t *testing.T) {
 
 	pVals, pBal, err := New(context.Background(), state)
 	require.NoError(t, err)
-	pVals, pBal, err = ProcessAttestations(context.Background(), state, pVals, pBal)
+	_, _, err = ProcessAttestations(context.Background(), state, pVals, pBal)
 	require.ErrorContains(t, "attestation with inclusion delay of 0", err)
 }
 
@@ -214,8 +214,8 @@ func TestProcessRewardsAndPenaltiesPrecompute_SlashedInactivePenalty(t *testing.
 	for i := 0; i < len(atts); i++ {
 		atts[i] = &pb.PendingAttestation{
 			Data: &ethpb.AttestationData{
-				Target: &ethpb.Checkpoint{},
-				Source: &ethpb.Checkpoint{},
+				Target: &ethpb.Checkpoint{Root: make([]byte, 32)},
+				Source: &ethpb.Checkpoint{Root: make([]byte, 32)},
 			},
 			AggregationBits: bitfield.Bitlist{0xC0, 0xC0, 0xC0, 0xC0, 0x01},
 			InclusionDelay:  1,
@@ -287,9 +287,9 @@ func buildState(slot uint64, validatorCount uint64) *pb.BeaconState {
 		RandaoMixes:                 make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
 		Slashings:                   make([]uint64, params.BeaconConfig().EpochsPerSlashingsVector),
 		BlockRoots:                  make([][]byte, params.BeaconConfig().SlotsPerEpoch*10),
-		FinalizedCheckpoint:         &ethpb.Checkpoint{},
-		PreviousJustifiedCheckpoint: &ethpb.Checkpoint{},
-		CurrentJustifiedCheckpoint:  &ethpb.Checkpoint{},
+		FinalizedCheckpoint:         &ethpb.Checkpoint{Root: make([]byte, 32)},
+		PreviousJustifiedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)},
+		CurrentJustifiedCheckpoint:  &ethpb.Checkpoint{Root: make([]byte, 32)},
 	}
 }
 

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

@@ -21,7 +21,7 @@ func ProcessSlashingsPrecompute(state *stateTrie.BeaconState, pBal *Balance) err
 		totalSlashing += slashing
 	}
 
-	minSlashing := mathutil.Min(totalSlashing*3, pBal.ActiveCurrentEpoch)
+	minSlashing := mathutil.Min(totalSlashing*params.BeaconConfig().ProportionalSlashingMultiplier, pBal.ActiveCurrentEpoch)
 	epochToWithdraw := currentEpoch + exitLength/2
 	increment := params.BeaconConfig().EffectiveBalanceIncrement
 	validatorFunc := func(idx int, val *ethpb.Validator) (bool, error) {

beacon-chain/core/epoch/precompute/spectest/rewards_penalties_test.go

@@ -26,14 +26,16 @@ var deltaFiles = []string{"source_deltas.yaml", "target_deltas.yaml", "head_delt
 
 func runPrecomputeRewardsAndPenaltiesTests(t *testing.T, config string) {
 	require.NoError(t, spectest.SetConfig(t, config))
-	testPath := "rewards/core/pyspec_tests"
-	testFolders, testsFolderPath := testutil.TestFolders(t, config, testPath)
-	for _, folder := range testFolders {
-		helpers.ClearCache()
-		t.Run(folder.Name(), func(t *testing.T) {
-			folderPath := path.Join(testsFolderPath, folder.Name())
-			runPrecomputeRewardsAndPenaltiesTest(t, folderPath)
-		})
+	testPaths := []string{"rewards/basic/pyspec_tests", "rewards/leak/pyspec_tests", "rewards/random/pyspec_tests"}
+	for _, testPath := range testPaths {
+		testFolders, testsFolderPath := testutil.TestFolders(t, config, testPath)
+		for _, folder := range testFolders {
+			helpers.ClearCache()
+			t.Run(folder.Name(), func(t *testing.T) {
+				folderPath := path.Join(testsFolderPath, folder.Name())
+				runPrecomputeRewardsAndPenaltiesTest(t, folderPath)
+			})
+		}
 	}
 }
 
@@ -55,7 +57,7 @@ func runPrecomputeRewardsAndPenaltiesTest(t *testing.T, testFolderPath string) {
 	require.NoError(t, err)
 	pRewards, err := precompute.ProposersDelta(preBeaconState, bp, vp)
 	require.NoError(t, err)
-	if len(rewards) != len(penalties) && len(pRewards) != len(pRewards) {
+	if len(rewards) != len(penalties) && len(rewards) != len(pRewards) {
 		t.Fatal("Incorrect lengths")
 	}
 	for i, reward := range rewards {

beacon-chain/core/epoch/spectest/rewards_and_penalties_mainnet_test.go

@@ -0,0 +1,9 @@
+package spectest
+
+import (
+	"testing"
+)
+
+func TestRewardsAndPenaltiesMainnet(t *testing.T) {
+	runRewardsAndPenaltiesTests(t, "mainnet")
+}

beacon-chain/core/feed/BUILD.bazel

@@ -4,5 +4,8 @@ go_library(
     name = "go_default_library",
     srcs = ["event.go"],
     importpath = "github.com/prysmaticlabs/prysm/beacon-chain/core/feed",
-    visibility = ["//beacon-chain:__subpackages__"],
+    visibility = [
+        "//beacon-chain:__subpackages__",
+        "//shared:__subpackages__",
+    ],
 )

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

@@ -45,7 +45,7 @@ type SyncedData struct {
 type InitializedData struct {
 	// StartTime is the time at which the chain started.
 	StartTime time.Time
-	// GenesisValidatorsRoot represents ssz.HashTreeRoot(state.validators).
+	// GenesisValidatorsRoot represents state.validators.HashTreeRoot().
 	GenesisValidatorsRoot []byte
 }
 

beacon-chain/core/helpers/BUILD.bazel

@@ -18,12 +18,13 @@ go_library(
     visibility = [
         "//beacon-chain:__subpackages__",
         "//endtoend/evaluators:__pkg__",
+        "//fuzz:__pkg__",
+        "//shared/attestationutil:__pkg__",
         "//shared/benchutil/benchmark_files:__subpackages__",
+        "//shared/depositutil:__pkg__",
         "//shared/interop:__pkg__",
         "//shared/keystore:__pkg__",
-        "//shared/depositutil:__pkg__",
         "//shared/p2putils:__pkg__",
-        "//shared/attestationutil:__pkg__",
         "//shared/testutil:__pkg__",
         "//slasher:__subpackages__",
         "//tools:__subpackages__",
@@ -32,14 +33,16 @@ go_library(
     deps = [
         "//beacon-chain/cache:go_default_library",
         "//beacon-chain/state:go_default_library",
-        "//beacon-chain/state/stateutil:go_default_library",
         "//proto/beacon/p2p/v1:go_default_library",
         "//shared/bls:go_default_library",
         "//shared/bytesutil:go_default_library",
+        "//shared/featureconfig:go_default_library",
         "//shared/hashutil:go_default_library",
+        "//shared/mathutil:go_default_library",
         "//shared/params:go_default_library",
-        "//shared/roughtime:go_default_library",
         "//shared/sliceutil:go_default_library",
+        "//shared/timeutils:go_default_library",
+        "@com_github_ferranbt_fastssz//:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prysmaticlabs_ethereumapis//eth/v1alpha1:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
@@ -66,17 +69,16 @@ go_test(
     deps = [
         "//beacon-chain/cache:go_default_library",
         "//beacon-chain/state:go_default_library",
-        "//beacon-chain/state/stateutil:go_default_library",
         "//proto/beacon/p2p/v1:go_default_library",
         "//shared/bls:go_default_library",
         "//shared/bytesutil:go_default_library",
         "//shared/hashutil:go_default_library",
         "//shared/params:go_default_library",
-        "//shared/roughtime:go_default_library",
         "//shared/sliceutil:go_default_library",
         "//shared/testutil:go_default_library",
         "//shared/testutil/assert:go_default_library",
         "//shared/testutil/require:go_default_library",
+        "//shared/timeutils:go_default_library",
         "@com_github_google_gofuzz//:go_default_library",
         "@com_github_prysmaticlabs_ethereumapis//eth/v1alpha1:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",

beacon-chain/core/helpers/attestation.go

@@ -6,32 +6,12 @@ import (
 	"time"
 
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/shared/bls"
 	"github.com/prysmaticlabs/prysm/shared/hashutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
-	"github.com/prysmaticlabs/prysm/shared/roughtime"
+	"github.com/prysmaticlabs/prysm/shared/timeutils"
 )
 
-// SlotSignature returns the signed signature of the hash tree root of input slot.
-//
-// Spec pseudocode definition:
-//   def get_slot_signature(state: BeaconState, slot: Slot, privkey: int) -> BLSSignature:
-//    domain = get_domain(state, DOMAIN_SELECTION_PROOF, compute_epoch_at_slot(slot))
-//    signing_root = compute_signing_root(slot, domain)
-//    return bls.Sign(privkey, signing_root)
-func SlotSignature(state *stateTrie.BeaconState, slot uint64, privKey bls.SecretKey) (bls.Signature, error) {
-	d, err := Domain(state.Fork(), CurrentEpoch(state), params.BeaconConfig().DomainBeaconAttester, state.GenesisValidatorRoot())
-	if err != nil {
-		return nil, err
-	}
-	s, err := ComputeSigningRoot(slot, d)
-	if err != nil {
-		return nil, err
-	}
-	return privKey.Sign(s[:]), nil
-}
-
 // IsAggregator returns true if the signature is from the input validator. The committee
 // count is provided as an argument rather than direct implementation from spec. Having
 // committee count as an argument allows cheaper computation at run time.
@@ -124,7 +104,13 @@ func ComputeSubnetFromCommitteeAndSlot(activeValCount, comIdx, attSlot uint64) u
 //   valid_attestation_slot = 98
 // In the attestation must be within the range of 95 to 100 in the example above.
 func ValidateAttestationTime(attSlot uint64, genesisTime time.Time) error {
-	attTime := genesisTime.Add(time.Duration(attSlot*params.BeaconConfig().SecondsPerSlot) * time.Second)
+	if err := ValidateSlotClock(attSlot, uint64(genesisTime.Unix())); err != nil {
+		return err
+	}
+	attTime, err := SlotToTime(uint64(genesisTime.Unix()), attSlot)
+	if err != nil {
+		return err
+	}
 	currentSlot := SlotsSince(genesisTime)
 
 	// A clock disparity allows for minor tolerances outside of the expected range. This value is
@@ -133,7 +119,7 @@ func ValidateAttestationTime(attSlot uint64, genesisTime time.Time) error {
 
 	// An attestation cannot be from the future, so the upper bounds is set to now, with a minor
 	// tolerance for peer clock disparity.
-	upperBounds := roughtime.Now().Add(clockDisparity)
+	upperBounds := timeutils.Now().Add(clockDisparity)
 
 	// An attestation cannot be older than the current slot - attestation propagation slot range
 	// with a minor tolerance for peer clock disparity.
@@ -141,9 +127,11 @@ func ValidateAttestationTime(attSlot uint64, genesisTime time.Time) error {
 	if currentSlot > params.BeaconNetworkConfig().AttestationPropagationSlotRange {
 		lowerBoundsSlot = currentSlot - params.BeaconNetworkConfig().AttestationPropagationSlotRange
 	}
-	lowerBounds := genesisTime.Add(
-		time.Duration(lowerBoundsSlot*params.BeaconConfig().SecondsPerSlot) * time.Second,
-	).Add(-clockDisparity)
+	lowerTime, err := SlotToTime(uint64(genesisTime.Unix()), lowerBoundsSlot)
+	if err != nil {
+		return err
+	}
+	lowerBounds := lowerTime.Add(-clockDisparity)
 
 	// Verify attestation slot within the time range.
 	if attTime.Before(lowerBounds) || attTime.After(upperBounds) {

beacon-chain/core/helpers/attestation_test.go

@@ -12,33 +12,12 @@ import (
 	"github.com/prysmaticlabs/prysm/shared/bls"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
-	"github.com/prysmaticlabs/prysm/shared/roughtime"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
+	"github.com/prysmaticlabs/prysm/shared/timeutils"
 )
 
-func TestAttestation_SlotSignature(t *testing.T) {
-	priv := bls.RandKey()
-	pub := priv.PublicKey()
-	state, err := beaconstate.InitializeFromProto(&pb.BeaconState{
-		Validators: []*ethpb.Validator{{PublicKey: pub.Marshal()}},
-		Fork: &pb.Fork{
-			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-			Epoch:           0,
-		},
-		Slot: 100,
-	})
-	require.NoError(t, err)
-	slot := uint64(101)
-
-	sig, err := helpers.SlotSignature(state, slot, priv)
-	require.NoError(t, err)
-	require.NoError(t, helpers.ComputeDomainVerifySigningRoot(state, 0, helpers.CurrentEpoch(state), slot,
-		params.BeaconConfig().DomainBeaconAttester, sig.Marshal()))
-}
-
 func TestAttestation_IsAggregator(t *testing.T) {
 	t.Run("aggregator", func(t *testing.T) {
 		beaconState, privKeys := testutil.DeterministicGenesisState(t, 100)
@@ -89,7 +68,7 @@ func TestAttestation_AggregateSignature(t *testing.T) {
 		for i := 0; i < 100; i++ {
 			priv := bls.RandKey()
 			pub := priv.PublicKey()
-			sig := priv.Sign(msg[:])
+			sig := priv.Sign(msg)
 			pubkeys = append(pubkeys, pub)
 			att := &ethpb.Attestation{Signature: sig.Marshal()}
 			atts = append(atts, att)
@@ -154,77 +133,83 @@ func Test_ValidateAttestationTime(t *testing.T) {
 		genesisTime time.Time
 	}
 	tests := []struct {
-		name    string
-		args    args
-		wantErr bool
+		name      string
+		args      args
+		wantedErr string
 	}{
 		{
 			name: "attestation.slot == current_slot",
 			args: args{
 				attSlot:     15,
-				genesisTime: roughtime.Now().Add(-15 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second),
+				genesisTime: timeutils.Now().Add(-15 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second),
 			},
-			wantErr: false,
 		},
 		{
 			name: "attestation.slot == current_slot, received in middle of slot",
 			args: args{
 				attSlot: 15,
-				genesisTime: roughtime.Now().Add(
+				genesisTime: timeutils.Now().Add(
 					-15 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second,
 				).Add(-(time.Duration(params.BeaconConfig().SecondsPerSlot/2) * time.Second)),
 			},
-			wantErr: false,
 		},
 		{
 			name: "attestation.slot == current_slot, received 200ms early",
 			args: args{
 				attSlot: 16,
-				genesisTime: roughtime.Now().Add(
+				genesisTime: timeutils.Now().Add(
 					-16 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second,
 				).Add(-200 * time.Millisecond),
 			},
-			wantErr: false,
 		},
 		{
 			name: "attestation.slot > current_slot",
 			args: args{
 				attSlot:     16,
-				genesisTime: roughtime.Now().Add(-15 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second),
+				genesisTime: timeutils.Now().Add(-15 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second),
 			},
-			wantErr: true,
+			wantedErr: "not within attestation propagation range",
 		},
 		{
 			name: "attestation.slot < current_slot-ATTESTATION_PROPAGATION_SLOT_RANGE",
 			args: args{
 				attSlot:     100 - params.BeaconNetworkConfig().AttestationPropagationSlotRange - 1,
-				genesisTime: roughtime.Now().Add(-100 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second),
+				genesisTime: timeutils.Now().Add(-100 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second),
 			},
-			wantErr: true,
+			wantedErr: "not within attestation propagation range",
 		},
 		{
 			name: "attestation.slot = current_slot-ATTESTATION_PROPAGATION_SLOT_RANGE",
 			args: args{
 				attSlot:     100 - params.BeaconNetworkConfig().AttestationPropagationSlotRange,
-				genesisTime: roughtime.Now().Add(-100 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second),
+				genesisTime: timeutils.Now().Add(-100 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second),
 			},
-			wantErr: false,
 		},
 		{
 			name: "attestation.slot = current_slot-ATTESTATION_PROPAGATION_SLOT_RANGE, received 200ms late",
 			args: args{
 				attSlot: 100 - params.BeaconNetworkConfig().AttestationPropagationSlotRange,
-				genesisTime: roughtime.Now().Add(
+				genesisTime: timeutils.Now().Add(
 					-100 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second,
 				).Add(200 * time.Millisecond),
 			},
-			wantErr: false,
+		},
+		{
+			name: "attestation.slot is well beyond current slot",
+			args: args{
+				attSlot:     1 << 32,
+				genesisTime: timeutils.Now().Add(-15 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second),
+			},
+			wantedErr: "which exceeds max allowed value relative to the local clock",
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if err := helpers.ValidateAttestationTime(tt.args.attSlot, tt.args.genesisTime); (err != nil) != tt.wantErr {
-				t.Errorf("validateAggregateAttTime() error = %v, wantErr %v", err, tt.wantErr)
+			err := helpers.ValidateAttestationTime(tt.args.attSlot, tt.args.genesisTime)
+			if tt.wantedErr != "" {
+				assert.ErrorContains(t, tt.wantedErr, err)
+			} else {
+				assert.NoError(t, err)
 			}
 		})
 	}

beacon-chain/core/helpers/block.go

@@ -32,5 +32,9 @@ func BlockRootAtSlot(state *stateTrie.BeaconState, slot uint64) ([]byte, error)
 //    """
 //    return get_block_root_at_slot(state, compute_start_slot_at_epoch(epoch))
 func BlockRoot(state *stateTrie.BeaconState, epoch uint64) ([]byte, error) {
-	return BlockRootAtSlot(state, StartSlot(epoch))
+	s, err := StartSlot(epoch)
+	if err != nil {
+		return nil, err
+	}
+	return BlockRootAtSlot(state, s)
 }

beacon-chain/core/helpers/committee.go

@@ -12,12 +12,14 @@ import (
 	"github.com/prysmaticlabs/prysm/beacon-chain/cache"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/shared/bytesutil"
+	"github.com/prysmaticlabs/prysm/shared/featureconfig"
 	"github.com/prysmaticlabs/prysm/shared/hashutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
 	"github.com/prysmaticlabs/prysm/shared/sliceutil"
 )
 
 var committeeCache = cache.NewCommitteesCache()
+var proposerIndicesCache = cache.NewProposerIndicesCache()
 
 // SlotCommitteeCount returns the number of crosslink committees of a slot. The
 // active validator count is provided as an argument rather than a direct implementation
@@ -143,7 +145,30 @@ func ComputeCommittee(
 	// for fast computation of committees.
 	// Reference implementation: https://github.com/protolambda/eth2-shuffle
 	shuffledList, err := UnshuffleList(shuffledIndices, seed)
-	return shuffledList[start:end], err
+	if err != nil {
+		return nil, err
+	}
+
+	// This updates the cache on a miss.
+	if featureconfig.Get().UseCheckPointInfoCache {
+		sortedIndices := make([]uint64, len(indices))
+		copy(sortedIndices, indices)
+		sort.Slice(sortedIndices, func(i, j int) bool {
+			return sortedIndices[i] < sortedIndices[j]
+		})
+
+		count = SlotCommitteeCount(uint64(len(shuffledIndices)))
+		if err := committeeCache.AddCommitteeShuffledList(&cache.Committees{
+			ShuffledIndices: shuffledList,
+			CommitteeCount:  count * params.BeaconConfig().SlotsPerEpoch,
+			Seed:            seed,
+			SortedIndices:   sortedIndices,
+		}); err != nil {
+			return nil, err
+		}
+	}
+
+	return shuffledList[start:end], nil
 }
 
 // CommitteeAssignmentContainer represents a committee, index, and attester slot for a given epoch.
@@ -176,7 +201,10 @@ func CommitteeAssignments(
 	// We determine the slots in which proposers are supposed to act.
 	// Some validators may need to propose multiple times per epoch, so
 	// we use a map of proposer idx -> []slot to keep track of this possibility.
-	startSlot := StartSlot(epoch)
+	startSlot, err := StartSlot(epoch)
+	if err != nil {
+		return nil, nil, err
+	}
 	proposerIndexToSlots := make(map[uint64][]uint64, params.BeaconConfig().SlotsPerEpoch)
 	for slot := startSlot; slot < startSlot+params.BeaconConfig().SlotsPerEpoch; slot++ {
 		// Skip proposer assignment for genesis slot.
@@ -285,7 +313,8 @@ func UpdateCommitteeCache(state *stateTrie.BeaconState, epoch uint64) error {
 		if err != nil {
 			return err
 		}
-		if _, exists, err := committeeCache.CommitteeCache.GetByKey(string(seed[:])); err == nil && exists {
+
+		if committeeCache.HasEntry(string(seed[:])) {
 			return nil
 		}
 
@@ -320,29 +349,38 @@ func UpdateCommitteeCache(state *stateTrie.BeaconState, epoch uint64) error {
 
 // UpdateProposerIndicesInCache updates proposer indices entry of the committee cache.
 func UpdateProposerIndicesInCache(state *stateTrie.BeaconState, epoch uint64) error {
+	// The cache uses the block root at the last epoch slot as key. (e.g. for epoch 1, the key is root at slot 31)
+	// Which is the reason why we skip genesis epoch.
+	if epoch <= params.BeaconConfig().GenesisEpoch {
+		return nil
+	}
+
 	indices, err := ActiveValidatorIndices(state, epoch)
 	if err != nil {
-		return nil
+		return err
 	}
 	proposerIndices, err := precomputeProposerIndices(state, indices)
 	if err != nil {
 		return err
 	}
-	// The committee cache uses attester domain seed as key.
-	seed, err := Seed(state, epoch, params.BeaconConfig().DomainBeaconAttester)
+	s, err := EndSlot(PrevEpoch(state))
 	if err != nil {
 		return err
 	}
-	if err := committeeCache.AddProposerIndicesList(seed, proposerIndices); err != nil {
+	r, err := BlockRootAtSlot(state, s)
+	if err != nil {
 		return err
 	}
-
-	return nil
+	return proposerIndicesCache.AddProposerIndices(&cache.ProposerIndices{
+		BlockRoot:       bytesutil.ToBytes32(r),
+		ProposerIndices: proposerIndices,
+	})
 }
 
 // ClearCache clears the committee cache
 func ClearCache() {
 	committeeCache = cache.NewCommitteesCache()
+	proposerIndicesCache = cache.NewProposerIndicesCache()
 }
 
 // This computes proposer indices of the current epoch and returns a list of proposer indices,
@@ -356,7 +394,10 @@ func precomputeProposerIndices(state *stateTrie.BeaconState, activeIndices []uin
 	if err != nil {
 		return nil, errors.Wrap(err, "could not generate seed")
 	}
-	slot := StartSlot(e)
+	slot, err := StartSlot(e)
+	if err != nil {
+		return nil, err
+	}
 	for i := uint64(0); i < params.BeaconConfig().SlotsPerEpoch; i++ {
 		seedWithSlot := append(seed[:], bytesutil.Bytes8(slot+i)...)
 		seedWithSlotHash := hashFunc(seedWithSlot)

beacon-chain/core/helpers/committee_test.go

@@ -230,8 +230,10 @@ func TestCommitteeAssignments_EverySlotHasMin1Proposer(t *testing.T) {
 		}
 	}
 	assert.Equal(t, params.BeaconConfig().SlotsPerEpoch, uint64(len(slotsWithProposers)), "Unexpected slots")
-	startSlot := StartSlot(epoch)
-	endSlot := StartSlot(epoch + 1)
+	startSlot, err := StartSlot(epoch)
+	require.NoError(t, err)
+	endSlot, err := StartSlot(epoch + 1)
+	require.NoError(t, err)
 	for i := startSlot; i < endSlot; i++ {
 		hasProposer := slotsWithProposers[i]
 		assert.Equal(t, true, hasProposer, "Expected every slot in epoch 1 to have a proposer, slot %d did not", i)
@@ -263,7 +265,7 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 				AggregationBits: bitfield.Bitlist{0x05},
 				Data: &ethpb.AttestationData{
 					CommitteeIndex: 5,
-					Target:         &ethpb.Checkpoint{},
+					Target:         &ethpb.Checkpoint{Root: make([]byte, 32)},
 				},
 			},
 			stateSlot: 5,
@@ -274,7 +276,7 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 				AggregationBits: bitfield.Bitlist{0x06},
 				Data: &ethpb.AttestationData{
 					CommitteeIndex: 10,
-					Target:         &ethpb.Checkpoint{},
+					Target:         &ethpb.Checkpoint{Root: make([]byte, 32)},
 				},
 			},
 			stateSlot: 10,
@@ -284,7 +286,7 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 				AggregationBits: bitfield.Bitlist{0x06},
 				Data: &ethpb.AttestationData{
 					CommitteeIndex: 20,
-					Target:         &ethpb.Checkpoint{},
+					Target:         &ethpb.Checkpoint{Root: make([]byte, 32)},
 				},
 			},
 			stateSlot: 20,
@@ -294,7 +296,7 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 				AggregationBits: bitfield.Bitlist{0x06},
 				Data: &ethpb.AttestationData{
 					CommitteeIndex: 20,
-					Target:         &ethpb.Checkpoint{},
+					Target:         &ethpb.Checkpoint{Root: make([]byte, 32)},
 				},
 			},
 			stateSlot: 20,
@@ -304,7 +306,7 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 				AggregationBits: bitfield.Bitlist{0xFF, 0xC0, 0x01},
 				Data: &ethpb.AttestationData{
 					CommitteeIndex: 5,
-					Target:         &ethpb.Checkpoint{},
+					Target:         &ethpb.Checkpoint{Root: make([]byte, 32)},
 				},
 			},
 			stateSlot:           5,
@@ -315,7 +317,7 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 				AggregationBits: bitfield.Bitlist{0xFF, 0x01},
 				Data: &ethpb.AttestationData{
 					CommitteeIndex: 20,
-					Target:         &ethpb.Checkpoint{},
+					Target:         &ethpb.Checkpoint{Root: make([]byte, 32)},
 				},
 			},
 			stateSlot:           20,
@@ -328,14 +330,9 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 		require.NoError(t, state.SetSlot(tt.stateSlot))
 		err := VerifyAttestationBitfieldLengths(state, tt.attestation)
 		if tt.verificationFailure {
-			if err == nil {
-				t.Error("verification succeeded when it was supposed to fail")
-			}
-			continue
-		}
-		if err != nil {
-			t.Errorf("%d Failed to verify bitfield: %v", i, err)
-			continue
+			assert.NotNil(t, err, "Verification succeeded when it was supposed to fail")
+		} else {
+			assert.NoError(t, err, "%d Failed to verify bitfield: %v", i, err)
 		}
 	}
 }
@@ -395,7 +392,7 @@ func TestUpdateCommitteeCache_CanUpdate(t *testing.T) {
 	seed, err := Seed(state, epoch, params.BeaconConfig().DomainBeaconAttester)
 	require.NoError(t, err)
 
-	indices, err = committeeCache.Committee(StartSlot(epoch), seed, idx)
+	indices, err = committeeCache.Committee(epoch*params.BeaconConfig().SlotsPerEpoch, seed, idx)
 	require.NoError(t, err)
 	assert.Equal(t, params.BeaconConfig().TargetCommitteeSize, uint64(len(indices)), "Did not save correct indices lengths")
 }
@@ -631,3 +628,9 @@ func TestPrecomputeProposerIndices_Ok(t *testing.T) {
 	}
 	assert.DeepEqual(t, wantedProposerIndices, proposerIndices, "Did not precompute proposer indices correctly")
 }
+
+func TestUpdateProposerIndicesInCache_CouldNotGetActiveIndices(t *testing.T) {
+	err := UpdateProposerIndicesInCache(&beaconstate.BeaconState{}, 1)
+	want := "nil inner state"
+	require.ErrorContains(t, want, err)
+}

beacon-chain/core/helpers/signing_root.go

@@ -1,11 +1,11 @@
 package helpers
 
 import (
+	fssz "github.com/ferranbt/fastssz"
 	"github.com/pkg/errors"
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
 	p2ppb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
 	"github.com/prysmaticlabs/prysm/shared/bls"
@@ -48,16 +48,14 @@ func ComputeDomainAndSign(state *state.BeaconState, epoch uint64, obj interface{
 //        domain=domain,
 //    ))
 func ComputeSigningRoot(object interface{}, domain []byte) ([32]byte, error) {
+	if object == nil {
+		return [32]byte{}, errors.New("cannot compute signing root of nil")
+	}
 	return signingData(func() ([32]byte, error) {
-		switch t := object.(type) {
-		case *ethpb.BeaconBlock:
-			return stateutil.BlockRoot(t)
-		case *ethpb.AttestationData:
-			return stateutil.AttestationDataRoot(t)
-		default:
-			// utilise generic ssz library
-			return ssz.HashTreeRoot(object)
+		if v, ok := object.(fssz.HashRoot); ok {
+			return v.HashTreeRoot()
 		}
+		return ssz.HashTreeRoot(object)
 	}, domain)
 }
 
@@ -72,7 +70,7 @@ func signingData(rootFunc func() ([32]byte, error), domain []byte) ([32]byte, er
 		ObjectRoot: objRoot[:],
 		Domain:     domain,
 	}
-	return ssz.HashTreeRoot(container)
+	return container.HashTreeRoot()
 }
 
 // ComputeDomainVerifySigningRoot computes domain and verifies signing root of an object given the beacon state, validator index and signature.
@@ -119,7 +117,11 @@ func VerifyBlockSigningRoot(blk *ethpb.BeaconBlock, pub []byte, signature []byte
 	publicKey := set.PublicKeys[0]
 	root := set.Messages[0]
 
-	if !sig.Verify(publicKey, root[:]) {
+	rSig, err := bls.SignatureFromBytes(sig)
+	if err != nil {
+		return err
+	}
+	if !rSig.Verify(publicKey, root[:]) {
 		return ErrSigFailedToVerify
 	}
 	return nil
@@ -132,19 +134,13 @@ func RetrieveBlockSignatureSet(blk *ethpb.BeaconBlock, pub []byte, signature []b
 	if err != nil {
 		return nil, errors.Wrap(err, "could not convert bytes to public key")
 	}
-	sig, err := bls.SignatureFromBytes(signature)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not convert bytes to signature")
-	}
-	root, err := signingData(func() ([32]byte, error) {
-		// utilize custom block hashing function
-		return stateutil.BlockRoot(blk)
-	}, domain)
+	// utilize custom block hashing function
+	root, err := signingData(blk.HashTreeRoot, domain)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not compute signing root")
 	}
 	return &bls.SignatureSet{
-		Signatures: []bls.Signature{sig},
+		Signatures: [][]byte{signature},
 		PublicKeys: []bls.PublicKey{publicKey},
 		Messages:   [][32]byte{root},
 	}, nil
@@ -160,9 +156,7 @@ func VerifyBlockHeaderSigningRoot(blkHdr *ethpb.BeaconBlockHeader, pub []byte, s
 	if err != nil {
 		return errors.Wrap(err, "could not convert bytes to signature")
 	}
-	root, err := signingData(func() ([32]byte, error) {
-		return stateutil.BlockHeaderRoot(blkHdr)
-	}, domain)
+	root, err := signingData(blkHdr.HashTreeRoot, domain)
 	if err != nil {
 		return errors.Wrap(err, "could not compute signing root")
 	}
@@ -225,10 +219,10 @@ func domain(domainType [DomainByteLength]byte, forkDataRoot []byte) []byte {
 //        genesis_validators_root=genesis_validators_root,
 //    ))
 func computeForkDataRoot(version []byte, root []byte) ([32]byte, error) {
-	r, err := ssz.HashTreeRoot(&pb.ForkData{
+	r, err := (&pb.ForkData{
 		CurrentVersion:        version,
 		GenesisValidatorsRoot: root,
-	})
+	}).HashTreeRoot()
 	if err != nil {
 		return [32]byte{}, err
 	}
@@ -248,7 +242,7 @@ func computeForkDataRoot(version []byte, root []byte) ([32]byte, error) {
 func ComputeForkDigest(version []byte, genesisValidatorsRoot []byte) ([4]byte, error) {
 	dataRoot, err := computeForkDataRoot(version, genesisValidatorsRoot)
 	if err != nil {
-		return [4]byte{}, nil
+		return [4]byte{}, err
 	}
 	return bytesutil.ToBytes4(dataRoot[:]), nil
 }

beacon-chain/core/helpers/signing_root_test.go

@@ -1,21 +1,21 @@
-package helpers
+package helpers_test
 
 import (
 	"bytes"
 	"testing"
 
 	fuzz "github.com/google/gofuzz"
-	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
+	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	ethereum_beacon_p2p_v1 "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
-	"github.com/prysmaticlabs/prysm/shared/params"
+	"github.com/prysmaticlabs/prysm/shared/bytesutil"
+	"github.com/prysmaticlabs/prysm/shared/testutil"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
 )
 
 func TestSigningRoot_ComputeOK(t *testing.T) {
-	emptyBlock := &ethpb.BeaconBlock{}
-	_, err := ComputeSigningRoot(emptyBlock, []byte{'T', 'E', 'S', 'T'})
+	emptyBlock := testutil.NewBeaconBlock()
+	_, err := helpers.ComputeSigningRoot(emptyBlock, bytesutil.PadTo([]byte{'T', 'E', 'S', 'T'}, 32))
 	assert.NoError(t, err, "Could not compute signing root of block")
 }
 
@@ -25,38 +25,21 @@ func TestComputeDomain_OK(t *testing.T) {
 		domainType [4]byte
 		domain     []byte
 	}{
-		{epoch: 1, domainType: [4]byte{4, 0, 0, 0}, domain: []byte{4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
-		{epoch: 2, domainType: [4]byte{4, 0, 0, 0}, domain: []byte{4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
-		{epoch: 2, domainType: [4]byte{5, 0, 0, 0}, domain: []byte{5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
-		{epoch: 3, domainType: [4]byte{4, 0, 0, 0}, domain: []byte{4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
-		{epoch: 3, domainType: [4]byte{5, 0, 0, 0}, domain: []byte{5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
+		{epoch: 1, domainType: [4]byte{4, 0, 0, 0}, domain: []byte{4, 0, 0, 0, 245, 165, 253, 66, 209, 106, 32, 48, 39, 152, 239, 110, 211, 9, 151, 155, 67, 0, 61, 35, 32, 217, 240, 232, 234, 152, 49, 169}},
+		{epoch: 2, domainType: [4]byte{4, 0, 0, 0}, domain: []byte{4, 0, 0, 0, 245, 165, 253, 66, 209, 106, 32, 48, 39, 152, 239, 110, 211, 9, 151, 155, 67, 0, 61, 35, 32, 217, 240, 232, 234, 152, 49, 169}},
+		{epoch: 2, domainType: [4]byte{5, 0, 0, 0}, domain: []byte{5, 0, 0, 0, 245, 165, 253, 66, 209, 106, 32, 48, 39, 152, 239, 110, 211, 9, 151, 155, 67, 0, 61, 35, 32, 217, 240, 232, 234, 152, 49, 169}},
+		{epoch: 3, domainType: [4]byte{4, 0, 0, 0}, domain: []byte{4, 0, 0, 0, 245, 165, 253, 66, 209, 106, 32, 48, 39, 152, 239, 110, 211, 9, 151, 155, 67, 0, 61, 35, 32, 217, 240, 232, 234, 152, 49, 169}},
+		{epoch: 3, domainType: [4]byte{5, 0, 0, 0}, domain: []byte{5, 0, 0, 0, 245, 165, 253, 66, 209, 106, 32, 48, 39, 152, 239, 110, 211, 9, 151, 155, 67, 0, 61, 35, 32, 217, 240, 232, 234, 152, 49, 169}},
 	}
 	for _, tt := range tests {
-		if !bytes.Equal(domain(tt.domainType, params.BeaconConfig().ZeroHash[:]), tt.domain) {
-			t.Errorf("wanted domain version: %d, got: %d", tt.domain, domain(tt.domainType, params.BeaconConfig().ZeroHash[:]))
+		if got, err := helpers.ComputeDomain(tt.domainType, nil, nil); !bytes.Equal(got, tt.domain) {
+			t.Errorf("wanted domain version: %d, got: %d", tt.domain, got)
+		} else {
+			require.NoError(t, err)
 		}
 	}
 }
 
-func TestSigningRoot_Compatibility(t *testing.T) {
-	parRoot := [32]byte{'A'}
-	stateRoot := [32]byte{'B'}
-	blk := &ethpb.BeaconBlock{
-		Slot:          20,
-		ProposerIndex: 20,
-		ParentRoot:    parRoot[:],
-		StateRoot:     stateRoot[:],
-		Body:          &ethpb.BeaconBlockBody{},
-	}
-	root, err := ComputeSigningRoot(blk, params.BeaconConfig().DomainBeaconProposer[:])
-	require.NoError(t, err)
-	newRoot, err := signingData(func() ([32]byte, error) {
-		return stateutil.BlockRoot(blk)
-	}, params.BeaconConfig().DomainBeaconProposer[:])
-	require.NoError(t, err)
-	assert.Equal(t, root, newRoot, "Wanted root of %#x but got %#x", root, newRoot)
-}
-
 func TestComputeForkDigest_OK(t *testing.T) {
 	tests := []struct {
 		version []byte
@@ -68,7 +51,7 @@ func TestComputeForkDigest_OK(t *testing.T) {
 		{version: []byte{'b', 'w', 'r', 't'}, root: [32]byte{'r', 'd', 'c'}, result: [4]byte{0x83, 0x34, 0x38, 0x88}},
 	}
 	for _, tt := range tests {
-		digest, err := ComputeForkDigest(tt.version, tt.root[:])
+		digest, err := helpers.ComputeForkDigest(tt.version, tt.root[:])
 		require.NoError(t, err)
 		assert.Equal(t, tt.result, digest, "Wanted domain version: %#x, got: %#x", digest, tt.result)
 	}
@@ -92,8 +75,9 @@ func TestFuzzverifySigningRoot_10000(t *testing.T) {
 		fuzzer.Fuzz(&p)
 		fuzzer.Fuzz(&s)
 		fuzzer.Fuzz(&d)
-		err := VerifySigningRoot(state, pubkey[:], sig[:], domain[:])
-		err = VerifySigningRoot(state, p, s, d)
+		err := helpers.VerifySigningRoot(state, pubkey[:], sig[:], domain[:])
+		_ = err
+		err = helpers.VerifySigningRoot(state, p, s, d)
 		_ = err
 	}
 }

beacon-chain/core/helpers/slot_epoch.go

@@ -5,11 +5,17 @@ import (
 	"math"
 	"time"
 
+	"github.com/pkg/errors"
 	stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/shared/mathutil"
 	"github.com/prysmaticlabs/prysm/shared/params"
-	"github.com/prysmaticlabs/prysm/shared/roughtime"
+	"github.com/prysmaticlabs/prysm/shared/timeutils"
 )
 
+// MaxSlotBuffer specifies the max buffer given to slots from
+// incoming objects. (24 mins with mainnet spec)
+const MaxSlotBuffer = uint64(1 << 7)
+
 // SlotToEpoch returns the epoch number of the input slot.
 //
 // Spec pseudocode definition:
@@ -68,9 +74,26 @@ func NextEpoch(state *stateTrie.BeaconState) uint64 {
 //    """
 //    Return the start slot of ``epoch``.
 //    """
-//    return Slot(epoch * SLOTS_PER_EPOCH
-func StartSlot(epoch uint64) uint64 {
-	return epoch * params.BeaconConfig().SlotsPerEpoch
+//    return Slot(epoch * SLOTS_PER_EPOCH)
+func StartSlot(epoch uint64) (uint64, error) {
+	slot, err := mathutil.Mul64(epoch, params.BeaconConfig().SlotsPerEpoch)
+	if err != nil {
+		return slot, errors.Errorf("start slot calculation overflows: %v", err)
+	}
+	return slot, nil
+}
+
+// EndSlot returns the last slot number of the
+// current epoch.
+func EndSlot(epoch uint64) (uint64, error) {
+	if epoch == math.MaxUint64 {
+		return 0, errors.New("start slot calculation overflows")
+	}
+	slot, err := StartSlot(epoch + 1)
+	if err != nil {
+		return 0, err
+	}
+	return slot - 1, nil
 }
 
 // IsEpochStart returns true if the given slot number is an epoch starting slot
@@ -87,7 +110,7 @@ func IsEpochEnd(slot uint64) bool {
 
 // SlotsSinceEpochStarts returns number of slots since the start of the epoch.
 func SlotsSinceEpochStarts(slot uint64) uint64 {
-	return slot - StartSlot(SlotToEpoch(slot))
+	return slot % params.BeaconConfig().SlotsPerEpoch
 }
 
 // VerifySlotTime validates the input slot is not from the future.
@@ -96,7 +119,14 @@ func VerifySlotTime(genesisTime uint64, slot uint64, timeTolerance time.Duration
 	if err != nil {
 		return err
 	}
-	currentTime := roughtime.Now()
+
+	// Defensive check to ensure unreasonable slots are rejected
+	// straight away.
+	if err := ValidateSlotClock(slot, genesisTime); err != nil {
+		return err
+	}
+
+	currentTime := timeutils.Now()
 	diff := slotTime.Sub(currentTime)
 
 	if diff > timeTolerance {
@@ -107,25 +137,44 @@ func VerifySlotTime(genesisTime uint64, slot uint64, timeTolerance time.Duration
 
 // SlotToTime takes the given slot and genesis time to determine the start time of the slot.
 func SlotToTime(genesisTimeSec uint64, slot uint64) (time.Time, error) {
-	if slot >= math.MaxInt64 {
-		return time.Unix(0, 0), fmt.Errorf("slot (%d) is in the far distant future", slot)
+	timeSinceGenesis, err := mathutil.Mul64(slot, params.BeaconConfig().SecondsPerSlot)
+	if err != nil {
+		return time.Unix(0, 0), fmt.Errorf("slot (%d) is in the far distant future: %v", slot, err)
 	}
-	timeSinceGenesis := slot * params.BeaconConfig().SecondsPerSlot
-	return time.Unix(int64(genesisTimeSec+timeSinceGenesis), 0), nil
+	sTime, err := mathutil.Add64(genesisTimeSec, timeSinceGenesis)
+	if err != nil {
+		return time.Unix(0, 0), fmt.Errorf("slot (%d) is in the far distant future: %v", slot, err)
+	}
+	return time.Unix(int64(sTime), 0), nil
 }
 
 // SlotsSince computes the number of time slots that have occurred since the given timestamp.
 func SlotsSince(time time.Time) uint64 {
-	return uint64(roughtime.Since(time).Seconds()) / params.BeaconConfig().SecondsPerSlot
+	return CurrentSlot(uint64(time.Unix()))
 }
 
-// GenesisTime prioritizes to return the genesis time in config unless the config
-// genesis time is 0. Then it returns the genesis time in state.
-func GenesisTime(state *stateTrie.BeaconState) uint64 {
-	if params.BeaconConfig().GenesisTime == 0 {
-		return state.GenesisTime()
+// CurrentSlot returns the current slot as determined by the local clock and
+// provided genesis time.
+func CurrentSlot(genesisTimeSec uint64) uint64 {
+	now := timeutils.Now().Unix()
+	genesis := int64(genesisTimeSec)
+	if now < genesis {
+		return 0
 	}
-	return params.BeaconConfig().GenesisTime
+	return uint64(now-genesis) / params.BeaconConfig().SecondsPerSlot
+}
+
+// ValidateSlotClock validates a provided slot against the local
+// clock to ensure slots that are unreasonable are returned with
+// an error.
+func ValidateSlotClock(slot uint64, genesisTimeSec uint64) error {
+	maxPossibleSlot := CurrentSlot(genesisTimeSec) + MaxSlotBuffer
+	// Defensive check to ensure that we only process slots up to a hard limit
+	// from our local clock.
+	if slot > maxPossibleSlot {
+		return fmt.Errorf("slot %d > %d which exceeds max allowed value relative to the local clock", slot, maxPossibleSlot)
+	}
+	return nil
 }
 
 // RoundUpToNearestEpoch rounds up the provided slot value to the nearest epoch.
@@ -136,3 +185,36 @@ func RoundUpToNearestEpoch(slot uint64) uint64 {
 	}
 	return slot
 }
+
+// WeakSubjectivityCheckptEpoch returns the epoch of the latest weak subjectivity checkpoint for the active validator count and
+// finalized epoch.
+//
+// Reference spec implementation:
+// https://github.com/ethereum/eth2.0-specs/blob/weak-subjectivity-guide/specs/phase0/weak-subjectivity.md#calculating-the-weak-subjectivity-period
+//  def compute_weak_subjectivity_period(state):
+//    weak_subjectivity_period = MIN_VALIDATOR_WITHDRAWABILITY_DELAY
+//    val_count = len(get_active_validator_indices(state, get_current_epoch(state)))
+//    if val_count >= MIN_PER_EPOCH_CHURN_LIMIT * CHURN_LIMIT_QUOTIENT:
+//        weak_subjectivity_period += SAFETY_DECAY*CHURN_LIMIT_QUOTIENT/(2*100)
+//    else:
+//        weak_subjectivity_period += SAFETY_DECAY*val_count/(2*100*MIN_PER_EPOCH_CHURN_LIMIT)
+//    return weak_subjectivity_period
+func WeakSubjectivityCheckptEpoch(valCount uint64) (uint64, error) {
+	wsp := params.BeaconConfig().MinValidatorWithdrawabilityDelay
+
+	m := params.BeaconConfig().MinPerEpochChurnLimit
+	q := params.BeaconConfig().ChurnLimitQuotient
+	d := params.BeaconConfig().SafetyDecay
+	if valCount >= m*q {
+		v := d * q / (2 * 100)
+		wsp += v
+	} else {
+		v, err := mathutil.Mul64(d, valCount)
+		if err != nil {
+			return 0, err
+		}
+		v = v / (2 * 100 * m)
+		wsp += v
+	}
+	return wsp, nil
+}

beacon-chain/core/helpers/slot_epoch_test.go

@@ -2,13 +2,12 @@ package helpers
 
 import (
 	"math"
-	"reflect"
 	"testing"
 	"time"
 
-	"github.com/prysmaticlabs/prysm/shared/roughtime"
 	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
 	"github.com/prysmaticlabs/prysm/shared/testutil/require"
+	"github.com/prysmaticlabs/prysm/shared/timeutils"
 
 	beaconstate "github.com/prysmaticlabs/prysm/beacon-chain/state"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
@@ -87,14 +86,47 @@ func TestEpochStartSlot_OK(t *testing.T) {
 	tests := []struct {
 		epoch     uint64
 		startSlot uint64
+		error     bool
 	}{
-		{epoch: 0, startSlot: 0 * params.BeaconConfig().SlotsPerEpoch},
-		{epoch: 1, startSlot: 1 * params.BeaconConfig().SlotsPerEpoch},
-		{epoch: 10, startSlot: 10 * params.BeaconConfig().SlotsPerEpoch},
+		{epoch: 0, startSlot: 0 * params.BeaconConfig().SlotsPerEpoch, error: false},
+		{epoch: 1, startSlot: 1 * params.BeaconConfig().SlotsPerEpoch, error: false},
+		{epoch: 10, startSlot: 10 * params.BeaconConfig().SlotsPerEpoch, error: false},
+		{epoch: 1 << 58, startSlot: 1 << 63, error: false},
+		{epoch: 1 << 59, startSlot: 1 << 63, error: true},
+		{epoch: 1 << 60, startSlot: 1 << 63, error: true},
 	}
 	for _, tt := range tests {
-		state := &pb.BeaconState{Slot: tt.epoch}
-		assert.Equal(t, tt.startSlot, StartSlot(tt.epoch), "StartSlot(%d)", state.Slot)
+		ss, err := StartSlot(tt.epoch)
+		if !tt.error {
+			require.NoError(t, err)
+			assert.Equal(t, tt.startSlot, ss, "StartSlot(%d)", tt.epoch)
+		} else {
+			require.ErrorContains(t, "start slot calculation overflow", err)
+		}
+	}
+}
+
+func TestEpochEndSlot_OK(t *testing.T) {
+	tests := []struct {
+		epoch     uint64
+		startSlot uint64
+		error     bool
+	}{
+		{epoch: 0, startSlot: 1*params.BeaconConfig().SlotsPerEpoch - 1, error: false},
+		{epoch: 1, startSlot: 2*params.BeaconConfig().SlotsPerEpoch - 1, error: false},
+		{epoch: 10, startSlot: 11*params.BeaconConfig().SlotsPerEpoch - 1, error: false},
+		{epoch: 1 << 59, startSlot: 1 << 63, error: true},
+		{epoch: 1 << 60, startSlot: 1 << 63, error: true},
+		{epoch: math.MaxUint64, startSlot: 0, error: true},
+	}
+	for _, tt := range tests {
+		ss, err := EndSlot(tt.epoch)
+		if !tt.error {
+			require.NoError(t, err)
+			assert.Equal(t, tt.startSlot, ss, "StartSlot(%d)", tt.epoch)
+		} else {
+			require.ErrorContains(t, "start slot calculation overflow", err)
+		}
 	}
 }
 
@@ -190,10 +222,10 @@ func TestSlotToTime(t *testing.T) {
 		slot           uint64
 	}
 	tests := []struct {
-		name    string
-		args    args
-		want    time.Time
-		wantErr bool
+		name      string
+		args      args
+		want      time.Time
+		wantedErr string
 	}{
 		{
 			name: "slot_0",
@@ -201,8 +233,7 @@ func TestSlotToTime(t *testing.T) {
 				genesisTimeSec: 0,
 				slot:           0,
 			},
-			want:    time.Unix(0, 0),
-			wantErr: false,
+			want: time.Unix(0, 0),
 		},
 		{
 			name: "slot_1",
@@ -210,8 +241,7 @@ func TestSlotToTime(t *testing.T) {
 				genesisTimeSec: 0,
 				slot:           1,
 			},
-			want:    time.Unix(int64(1*params.BeaconConfig().SecondsPerSlot), 0),
-			wantErr: false,
+			want: time.Unix(int64(1*params.BeaconConfig().SecondsPerSlot), 0),
 		},
 		{
 			name: "slot_12",
@@ -219,8 +249,7 @@ func TestSlotToTime(t *testing.T) {
 				genesisTimeSec: 500,
 				slot:           12,
 			},
-			want:    time.Unix(500+int64(12*params.BeaconConfig().SecondsPerSlot), 0),
-			wantErr: false,
+			want: time.Unix(500+int64(12*params.BeaconConfig().SecondsPerSlot), 0),
 		},
 		{
 			name: "overflow",
@@ -228,13 +257,17 @@ func TestSlotToTime(t *testing.T) {
 				genesisTimeSec: 500,
 				slot:           math.MaxUint64,
 			},
-			wantErr: true,
+			wantedErr: "is in the far distant future",
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if got, err := SlotToTime(tt.args.genesisTimeSec, tt.args.slot); (err != nil) != tt.wantErr && !reflect.DeepEqual(got, tt.want) {
-				t.Errorf("SlotToTime() = %v, want %v", got, tt.want)
+			got, err := SlotToTime(tt.args.genesisTimeSec, tt.args.slot)
+			if tt.wantedErr != "" {
+				assert.ErrorContains(t, tt.wantedErr, err)
+			} else {
+				assert.NoError(t, err)
+				assert.DeepEqual(t, tt.want, got)
 			}
 		})
 	}
@@ -247,76 +280,91 @@ func TestVerifySlotTime(t *testing.T) {
 		timeTolerance time.Duration
 	}
 	tests := []struct {
-		name    string
-		args    args
-		wantErr bool
+		name      string
+		args      args
+		wantedErr string
 	}{
 		{
 			name: "Past slot",
 			args: args{
-				genesisTime: roughtime.Now().Add(-1 * 5 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second).Unix(),
+				genesisTime: timeutils.Now().Add(-1 * 5 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second).Unix(),
 				slot:        3,
 			},
-			wantErr: false,
 		},
 		{
 			name: "within tolerance",
 			args: args{
-				genesisTime: roughtime.Now().Add(-1 * 5 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second).Add(20 * time.Millisecond).Unix(),
+				genesisTime: timeutils.Now().Add(-1 * 5 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second).Add(20 * time.Millisecond).Unix(),
 				slot:        5,
 			},
-			wantErr: false,
 		},
 		{
 			name: "future slot",
 			args: args{
-				genesisTime: roughtime.Now().Add(-1 * 5 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second).Unix(),
+				genesisTime: timeutils.Now().Add(-1 * 5 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second).Unix(),
 				slot:        6,
 			},
-			wantErr: true,
+			wantedErr: "could not process slot from the future",
+		},
+		{
+			name: "max future slot",
+			args: args{
+				genesisTime: timeutils.Now().Add(-1 * 5 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second).Unix(),
+				slot:        MaxSlotBuffer + 6,
+			},
+			wantedErr: "exceeds max allowed value relative to the local clock",
+		},
+		{
+			name: "evil future slot",
+			args: args{
+				genesisTime: timeutils.Now().Add(-1 * 24 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second).Unix(), // 24 slots in the past
+				// Gets multiplied with slot duration, and results in an overflow. Wraps around to a valid time.
+				// Lower than max signed int. And chosen specifically to wrap to a valid slot 24
+				slot: ((^uint64(0)) / params.BeaconConfig().SecondsPerSlot) + 24,
+			},
+			wantedErr: "is in the far distant future",
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if err := VerifySlotTime(uint64(tt.args.genesisTime), tt.args.slot, tt.args.timeTolerance); (err != nil) != tt.wantErr {
-				t.Errorf("VerifySlotTime() error = %v, wantErr %v", err, tt.wantErr)
+			err := VerifySlotTime(uint64(tt.args.genesisTime), tt.args.slot, tt.args.timeTolerance)
+			if tt.wantedErr != "" {
+				assert.ErrorContains(t, tt.wantedErr, err)
+			} else {
+				assert.NoError(t, err)
 			}
 		})
 	}
 }
 
-func TestGenesisTime(t *testing.T) {
-	type args struct {
-		configTime uint64
-		stateTime  uint64
-	}
+func TestValidateSlotClock_HandlesBadSlot(t *testing.T) {
+	genTime := timeutils.Now().Add(-1 * time.Duration(MaxSlotBuffer) * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second).Unix()
+
+	assert.NoError(t, ValidateSlotClock(MaxSlotBuffer, uint64(genTime)), "unexpected error validating slot")
+	assert.NoError(t, ValidateSlotClock(2*MaxSlotBuffer, uint64(genTime)), "unexpected error validating slot")
+	assert.ErrorContains(t, "which exceeds max allowed value relative to the local clock", ValidateSlotClock(2*MaxSlotBuffer+1, uint64(genTime)), "no error from bad slot")
+	assert.ErrorContains(t, "which exceeds max allowed value relative to the local clock", ValidateSlotClock(1<<63, uint64(genTime)), "no error from bad slot")
+}
+
+func TestWeakSubjectivityCheckptEpoch(t *testing.T) {
 	tests := []struct {
-		name string
-		args args
-		want uint64
+		valCount uint64
+		want     uint64
 	}{
-		{
-			name: "Use config genesis time",
-			args: args{configTime: 1, stateTime: 2},
-			want: 1,
-		},
-		{
-			name: "Use state genesis time",
-			args: args{configTime: 0, stateTime: 2},
-			want: 2,
-		},
+		// Verifying these numbers aligned with the reference table defined:
+		// https://github.com/ethereum/eth2.0-specs/blob/weak-subjectivity-guide/specs/phase0/weak-subjectivity.md#calculating-the-weak-subjectivity-period
+		{valCount: params.BeaconConfig().MinGenesisActiveValidatorCount, want: 460},
+		{valCount: params.BeaconConfig().MinGenesisActiveValidatorCount * 2, want: 665},
+		{valCount: params.BeaconConfig().MinGenesisActiveValidatorCount * 4, want: 1075},
+		{valCount: params.BeaconConfig().MinGenesisActiveValidatorCount * 8, want: 1894},
+		{valCount: params.BeaconConfig().MinGenesisActiveValidatorCount * 16, want: 3532},
+		{valCount: params.BeaconConfig().MinGenesisActiveValidatorCount * 32, want: 3532},
 	}
 	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			c := params.BeaconConfig()
-			c.GenesisTime = tt.args.configTime
-			params.OverrideBeaconConfig(c)
-			s := &pb.BeaconState{GenesisTime: tt.args.stateTime}
-			state, err := beaconstate.InitializeFromProto(s)
-			require.NoError(t, err)
-			if got := GenesisTime(state); got != tt.want {
-				t.Errorf("GenesisTime() = %v, want %v", got, tt.want)
-			}
-		})
+		got, err := WeakSubjectivityCheckptEpoch(tt.valCount)
+		require.NoError(t, err)
+		if got != tt.want {
+			t.Errorf("WeakSubjectivityCheckptEpoch() = %v, want %v", got, tt.want)
+		}
 	}
 }

beacon-chain/core/helpers/validators.go

@@ -175,20 +175,30 @@ func ValidatorChurnLimit(activeValidatorCount uint64) (uint64, error) {
 //    return compute_proposer_index(state, indices, seed)
 func BeaconProposerIndex(state *stateTrie.BeaconState) (uint64, error) {
 	e := CurrentEpoch(state)
-
-	seed, err := Seed(state, e, params.BeaconConfig().DomainBeaconAttester)
-	if err != nil {
-		return 0, errors.Wrap(err, "could not generate seed")
-	}
-	proposerIndices, err := committeeCache.ProposerIndices(seed)
-	if err != nil {
-		return 0, errors.Wrap(err, "could not interface with committee cache")
-	}
-	if proposerIndices != nil {
-		return proposerIndices[state.Slot()%params.BeaconConfig().SlotsPerEpoch], nil
+	// The cache uses the block root of the previous epoch's last slot as key. (e.g. Starting epoch 1, slot 32, the key would be block root at slot 31)
+	// For simplicity, the node will skip caching of genesis epoch.
+	if e > params.BeaconConfig().GenesisEpoch {
+		s, err := EndSlot(PrevEpoch(state))
+		if err != nil {
+			return 0, err
+		}
+		r, err := BlockRootAtSlot(state, s)
+		if err != nil {
+			return 0, err
+		}
+		proposerIndices, err := proposerIndicesCache.ProposerIndices(bytesutil.ToBytes32(r))
+		if err != nil {
+			return 0, errors.Wrap(err, "could not interface with committee cache")
+		}
+		if proposerIndices != nil {
+			return proposerIndices[state.Slot()%params.BeaconConfig().SlotsPerEpoch], nil
+		}
+		if err := UpdateProposerIndicesInCache(state, e); err != nil {
+			return 0, errors.Wrap(err, "could not update committee cache")
+		}
 	}
 
-	seed, err = Seed(state, e, params.BeaconConfig().DomainBeaconProposer)
+	seed, err := Seed(state, e, params.BeaconConfig().DomainBeaconProposer)
 	if err != nil {
 		return 0, errors.Wrap(err, "could not generate seed")
 	}
@@ -201,19 +211,11 @@ func BeaconProposerIndex(state *stateTrie.BeaconState) (uint64, error) {
 		return 0, errors.Wrap(err, "could not get active indices")
 	}
 
-	if err := UpdateProposerIndicesInCache(state, e); err != nil {
-		return 0, errors.Wrap(err, "could not update committee cache")
-	}
-
 	return ComputeProposerIndex(state, indices, seedWithSlotHash)
 }
 
 // ComputeProposerIndex returns the index sampled by effective balance, which is used to calculate proposer.
 //
-//	This method is more efficient than ComputeProposerIndexWithValidators as it uses the read only validator
-//	abstraction to retrieve validator related data. Whereas the other method requires a whole copy of the validator
-//	set.
-//
 // Spec pseudocode definition:
 //  def compute_proposer_index(state: BeaconState, indices: Sequence[ValidatorIndex], seed: Hash) -> ValidatorIndex:
 //    """
@@ -250,7 +252,7 @@ func ComputeProposerIndex(bState *stateTrie.BeaconState, activeIndices []uint64,
 		randomByte := hashFunc(b)[i%32]
 		v, err := bState.ValidatorAtIndexReadOnly(candidateIndex)
 		if err != nil {
-			return 0, nil
+			return 0, err
 		}
 		effectiveBal := v.EffectiveBalance()
 
@@ -260,57 +262,6 @@ func ComputeProposerIndex(bState *stateTrie.BeaconState, activeIndices []uint64,
 	}
 }
 
-// ComputeProposerIndexWithValidators returns the index sampled by effective balance, which is used to calculate proposer.
-//
-// Note: This method signature deviates slightly from the spec recommended definition. The full
-// state object is not required to compute the proposer index.
-//
-// Spec pseudocode definition:
-//  def compute_proposer_index(state: BeaconState, indices: Sequence[ValidatorIndex], seed: Hash) -> ValidatorIndex:
-//    """
-//    Return from ``indices`` a random index sampled by effective balance.
-//    """
-//    assert len(indices) > 0
-//    MAX_RANDOM_BYTE = 2**8 - 1
-//    i = 0
-//    while True:
-//        candidate_index = indices[compute_shuffled_index(ValidatorIndex(i % len(indices)), len(indices), seed)]
-//        random_byte = hash(seed + int_to_bytes(i // 32, length=8))[i % 32]
-//        effective_balance = state.validators[candidate_index].effective_balance
-//        if effective_balance * MAX_RANDOM_BYTE >= MAX_EFFECTIVE_BALANCE * random_byte:
-//            return ValidatorIndex(candidate_index)
-//        i += 1
-// Deprecated: Prefer using the beacon state with ComputeProposerIndex to avoid an unnecessary copy of the validator set.
-func ComputeProposerIndexWithValidators(validators []*ethpb.Validator, activeIndices []uint64, seed [32]byte) (uint64, error) {
-	length := uint64(len(activeIndices))
-	if length == 0 {
-		return 0, errors.New("empty active indices list")
-	}
-	maxRandomByte := uint64(1<<8 - 1)
-	hashFunc := hashutil.CustomSHA256Hasher()
-
-	for i := uint64(0); ; i++ {
-		candidateIndex, err := ComputeShuffledIndex(i%length, length, seed, true /* shuffle */)
-		if err != nil {
-			return 0, err
-		}
-		candidateIndex = activeIndices[candidateIndex]
-		if candidateIndex >= uint64(len(validators)) {
-			return 0, errors.New("active index out of range")
-		}
-		b := append(seed[:], bytesutil.Bytes8(i/32)...)
-		randomByte := hashFunc(b)[i%32]
-		v := validators[candidateIndex]
-		var effectiveBal uint64
-		if v != nil {
-			effectiveBal = v.EffectiveBalance
-		}
-		if effectiveBal*maxRandomByte >= params.BeaconConfig().MaxEffectiveBalance*uint64(randomByte) {
-			return candidateIndex, nil
-		}
-	}
-}
-
 // Domain returns the domain version for BLS private key to sign and verify.
 //
 // Spec pseudocode definition: