Bump version.

Output "prater" as network name in launchpad format

.github/workflows/release.yml

@@ -63,20 +63,20 @@ jobs:
     - name: Create windows release files
       run: |
        mv ethdo-windows-4.0-amd64.exe ethdo.exe
-       sha256sum ethdo.exe >ethdo-${RELEASE_VERSION}-windows.sha256
        zip --junk-paths ethdo-${RELEASE_VERSION}-windows-exe.zip ethdo.exe
+       sha256sum ethdo-${RELEASE_VERSION}-windows-exe.zip >ethdo-${RELEASE_VERSION}-windows.sha256
 
     - name: Create linux AMD64 tgz file
       run: |
        mv ethdo-linux-amd64 ethdo
-       sha256sum ethdo >ethdo-${RELEASE_VERSION}-linux-amd64.sha256
        tar zcf ethdo-${RELEASE_VERSION}-linux-amd64.tar.gz ethdo
+       sha256sum ethdo-${RELEASE_VERSION}-linux-amd64.tar.gz >ethdo-${RELEASE_VERSION}-linux-amd64.sha256
 
        # - name: Create linux ARM64 tgz file
        #   run: |
        #    mv ethdo-linux-arm64 ethdo
-       #    sha256sum ethdo >ethdo-${RELEASE_VERSION}-linux-arm64.sha256
        #    tar zcf ethdo-${RELEASE_VERSION}-linux-arm64.tar.gz ethdo
+       #    sha256sum ethdo-${RELEASE_VERSION}-linux-arm64.tar.gz >ethdo-${RELEASE_VERSION}-linux-arm64.sha256
 
     - name: Create release
       id: create_release

CHANGELOG.md

@@ -1,3 +1,29 @@
+1.18.0:
+  - add "-ssz" option to "block info"
+  - add "block analyze" command
+  - support bellatrix
+
+1.17.0:
+  - add sync committee information to "chain time"
+  - add details of vote success to "attester inclusion --verbose"
+  - add "synccommittee inclusion"
+
+1.15.1:
+  - provide sync committee slots in "chain status"
+  - clarify that --connection should be a URL
+
+1.15.0:
+  - add --period to "synccommittee members", can be "current", "next"
+  - add "validator expectation"
+
+1.14.0:
+  - add "chain verify signedcontributionandproof"
+  - show both block and body root in "block info"
+  - add exit / withdrawable epoch to "validator info"
+
+1.13.0:
+  - rework and provide additional information to "chain status" output
+
 1.12.0:
   - add "synccommittee members"
 

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.16-buster as builder
+FROM golang:1.17-bullseye as builder
 
 WORKDIR /app
 
@@ -10,7 +10,9 @@ COPY . .
 
 RUN go build
 
-FROM debian:buster-slim
+FROM debian:bullseye-slim
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt install -y ca-certificates && apt-get clean && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 

cmd/attester/duties/input.go

@@ -63,17 +63,19 @@ func input(ctx context.Context) (*dataIn, error) {
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
+	// Required data.
+	config, err := data.eth2Client.(eth2client.SpecProvider).Spec(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to obtain beacon chain configuration")
+	}
+	data.slotsPerEpoch = config["SLOTS_PER_EPOCH"].(uint64)
+
 	// Epoch
 	epoch := viper.GetInt64("epoch")
 	if epoch == -1 {
-		config, err := data.eth2Client.(eth2client.SpecProvider).Spec(ctx)
-		if err != nil {
-			return nil, errors.Wrap(err, "failed to obtain beacon chain configuration")
-		}
-		data.slotsPerEpoch = config["SLOTS_PER_EPOCH"].(uint64)
 		slotDuration := config["SECONDS_PER_SLOT"].(time.Duration)
 		genesis, err := data.eth2Client.(eth2client.GenesisProvider).Genesis(ctx)
 		if err != nil {

cmd/attester/duties/input_internal_test.go

@@ -73,7 +73,7 @@ func TestInput(t *testing.T) {
 				"timeout": "5s",
 				"pubkey":  "0xa99a76ed7796f7be22d5b7e85deeb7c5677e88e511e0b337618f8c4eb61349b4bf2d153f649f7b53359fe8b94a38e44c",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 	}
 

cmd/attester/inclusion/input.go

@@ -15,12 +15,14 @@ package attesterinclusion
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	eth2client "github.com/attestantio/go-eth2-client"
 	spec "github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/services/chaintime"
 	"github.com/wealdtech/ethdo/util"
 )
 
@@ -34,9 +36,11 @@ type dataIn struct {
 	slotsPerEpoch uint64
 	// Operation.
 	eth2Client eth2client.Service
+	chainTime  chaintime.Service
 	epoch      spec.Epoch
 	account    string
 	pubKey     string
+	index      string
 }
 
 func input(ctx context.Context) (*dataIn, error) {
@@ -50,18 +54,24 @@ func input(ctx context.Context) (*dataIn, error) {
 	data.verbose = viper.GetBool("verbose")
 	data.debug = viper.GetBool("debug")
 
-	// Account or pubkey.
-	if viper.GetString("account") == "" && viper.GetString("pubkey") == "" {
-		return nil, errors.New("account or pubkey is required")
-	}
+	// Account.
 	data.account = viper.GetString("account")
+
+	// PubKey.
 	data.pubKey = viper.GetString("pubkey")
 
+	// ID.
+	data.index = viper.GetString("index")
+
+	if viper.GetString("account") == "" && viper.GetString("index") == "" && viper.GetString("pubkey") == "" {
+		return nil, errors.New("account, index or pubkey is required")
+	}
+
 	// Ethereum 2 client.
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	config, err := data.eth2Client.(eth2client.SpecProvider).Spec(ctx)
@@ -84,6 +94,9 @@ func input(ctx context.Context) (*dataIn, error) {
 		}
 	}
 	data.epoch = spec.Epoch(epoch)
+	if data.debug {
+		fmt.Printf("Epoch is %d\n", data.epoch)
+	}
 
 	return data, nil
 }

cmd/attester/inclusion/input_internal_test.go

@@ -61,11 +61,11 @@ func TestInput(t *testing.T) {
 			err:  "timeout is required",
 		},
 		{
-			name: "AccountMissing",
+			name: "IndexMissing",
 			vars: map[string]interface{}{
 				"timeout": "5s",
 			},
-			err: "account or pubkey is required",
+			err: "account, index or pubkey is required",
 		},
 		{
 			name: "ConnectionMissing",
@@ -73,7 +73,7 @@ func TestInput(t *testing.T) {
 				"timeout": "5s",
 				"pubkey":  "0xa99a76ed7796f7be22d5b7e85deeb7c5677e88e511e0b337618f8c4eb61349b4bf2d153f649f7b53359fe8b94a38e44c",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 	}
 

cmd/attester/inclusion/output.go

@@ -1,4 +1,4 @@
-// Copyright © 2019, 2020 Weald Technology Trading
+// Copyright © 2019 - 2022 Weald Technology Trading.
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -16,8 +16,9 @@ package attesterinclusion
 import (
 	"context"
 	"fmt"
+	"strings"
 
-	spec "github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 )
 
@@ -25,22 +26,67 @@ type dataOut struct {
 	debug            bool
 	quiet            bool
 	verbose          bool
-	slot             spec.Slot
+	attestation      *phase0.Attestation
+	slot             phase0.Slot
 	attestationIndex uint64
-	inclusionDelay   spec.Slot
+	inclusionDelay   phase0.Slot
 	found            bool
+	headCorrect      bool
+	headTimely       bool
+	sourceTimely     bool
+	targetCorrect    bool
+	targetTimely     bool
 }
 
 func output(ctx context.Context, data *dataOut) (string, error) {
+	buf := strings.Builder{}
 	if data == nil {
-		return "", errors.New("no data")
+		return buf.String(), errors.New("no data")
 	}
 
 	if !data.quiet {
 		if data.found {
-			return fmt.Sprintf("Attestation included in block %d, attestation %d (inclusion delay %d)", data.slot, data.attestationIndex, data.inclusionDelay), nil
+			buf.WriteString("Attestation included in block ")
+			buf.WriteString(fmt.Sprintf("%d", data.slot))
+			buf.WriteString(", index ")
+			buf.WriteString(fmt.Sprintf("%d", data.attestationIndex))
+			if data.verbose {
+				buf.WriteString("\nInclusion delay: ")
+				buf.WriteString(fmt.Sprintf("%d", data.inclusionDelay))
+				buf.WriteString("\nHead correct: ")
+				if data.headCorrect {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+				buf.WriteString("\nHead timely: ")
+				if data.headTimely {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+				buf.WriteString("\nSource timely: ")
+				if data.sourceTimely {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+				buf.WriteString("\nTarget correct: ")
+				if data.targetCorrect {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+				buf.WriteString("\nTarget timely: ")
+				if data.targetTimely {
+					buf.WriteString("✓")
+				} else {
+					buf.WriteString("✕")
+				}
+			}
+		} else {
+			buf.WriteString("Attestation not found")
 		}
-		return "Attestation not found", nil
 	}
-	return "", nil
+	return buf.String(), nil
 }

cmd/attester/inclusion/output_internal_test.go

@@ -44,7 +44,29 @@ func TestOutput(t *testing.T) {
 				attestationIndex: 456,
 				inclusionDelay:   7,
 			},
-			res: "Attestation included in block 123, attestation 456 (inclusion delay 7)",
+			res: `Attestation included in block 123, index 456`,
+		},
+		{
+			name: "Verbose",
+			dataOut: &dataOut{
+				verbose:          true,
+				found:            true,
+				slot:             123,
+				attestationIndex: 456,
+				inclusionDelay:   7,
+				headCorrect:      true,
+				headTimely:       false,
+				sourceTimely:     false,
+				targetCorrect:    true,
+				targetTimely:     true,
+			},
+			res: `Attestation included in block 123, index 456
+Inclusion delay: 7
+Head correct: ✓
+Head timely: ✕
+Source timely: ✕
+Target correct: ✓
+Target timely: ✓`,
 		},
 	}
 

cmd/attester/inclusion/process.go

@@ -1,4 +1,4 @@
-// Copyright © 2019, 2020 Weald Technology Trading
+// Copyright © 2019 - 2022 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -14,17 +14,16 @@
 package attesterinclusion
 
 import (
+	"bytes"
 	"context"
-	"encoding/hex"
 	"fmt"
-	"strings"
 
 	eth2client "github.com/attestantio/go-eth2-client"
 	api "github.com/attestantio/go-eth2-client/api/v1"
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
+	standardchaintime "github.com/wealdtech/ethdo/services/chaintime/standard"
 	"github.com/wealdtech/ethdo/util"
-	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 func process(ctx context.Context, data *dataIn) (*dataOut, error) {
@@ -32,34 +31,23 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 		return nil, errors.New("no data")
 	}
 
-	var account e2wtypes.Account
 	var err error
-	if data.account != "" {
-		ctx, cancel := context.WithTimeout(ctx, data.timeout)
-		defer cancel()
-		_, account, err = util.WalletAndAccountFromPath(ctx, data.account)
-		if err != nil {
-			return nil, errors.Wrap(err, "failed to obtain account")
-		}
-	} else {
-		pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(data.pubKey, "0x"))
-		if err != nil {
-			return nil, errors.Wrap(err, fmt.Sprintf("failed to decode public key %s", data.pubKey))
-		}
-		account, err = util.NewScratchAccount(nil, pubKeyBytes)
-		if err != nil {
-			return nil, errors.Wrap(err, fmt.Sprintf("invalid public key %s", data.pubKey))
-		}
+
+	data.chainTime, err = standardchaintime.New(ctx,
+		standardchaintime.WithSpecProvider(data.eth2Client.(eth2client.SpecProvider)),
+		standardchaintime.WithForkScheduleProvider(data.eth2Client.(eth2client.ForkScheduleProvider)),
+		standardchaintime.WithGenesisTimeProvider(data.eth2Client.(eth2client.GenesisTimeProvider)),
+	)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to set up chaintime service")
 	}
 
-	// Fetch validator
-	pubKeys := make([]phase0.BLSPubKey, 1)
-	pubKey, err := util.BestPublicKey(account)
+	validatorIndex, err := util.ValidatorIndex(ctx, data.eth2Client, data.account, data.pubKey, data.index)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to obtain public key for account")
+		return nil, errors.Wrap(err, "failed to obtain validator index")
 	}
-	copy(pubKeys[0][:], pubKey.Marshal())
-	validators, err := data.eth2Client.(eth2client.ValidatorsProvider).ValidatorsByPubKey(ctx, fmt.Sprintf("%d", uint64(data.epoch)*data.slotsPerEpoch), pubKeys)
+
+	validators, err := data.eth2Client.(eth2client.ValidatorsProvider).Validators(ctx, fmt.Sprintf("%d", uint64(data.epoch)*data.slotsPerEpoch), []phase0.ValidatorIndex{validatorIndex})
 	if err != nil {
 		return nil, errors.New("failed to obtain validator information")
 	}
@@ -81,6 +69,9 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to obtain duty for validator")
 	}
+	if data.debug {
+		fmt.Printf("Duty is %s\n", duty.String())
+	}
 
 	startSlot := duty.Slot + 1
 	endSlot := startSlot + 32
@@ -110,10 +101,32 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 			if attestation.Data.Slot == duty.Slot &&
 				attestation.Data.Index == duty.CommitteeIndex &&
 				attestation.AggregationBits.BitAt(duty.ValidatorCommitteeIndex) {
+
+				headCorrect := false
+				targetCorrect := false
+				if data.verbose {
+					headCorrect, err = calcHeadCorrect(ctx, data, attestation)
+					if err != nil {
+						return nil, errors.Wrap(err, "failed to obtain head correct result")
+					}
+					targetCorrect, err = calcTargetCorrect(ctx, data, attestation)
+					if err != nil {
+						return nil, errors.Wrap(err, "failed to obtain target correct result")
+					}
+				}
+				results.found = true
+				results.attestation = attestation
 				results.slot = slot
 				results.attestationIndex = uint64(i)
 				results.inclusionDelay = slot - duty.Slot
-				results.found = true
+				results.sourceTimely = results.inclusionDelay <= 5 // sqrt(32)
+				results.targetCorrect = targetCorrect
+				results.targetTimely = targetCorrect && results.inclusionDelay <= 32
+				results.headCorrect = headCorrect
+				results.headTimely = headCorrect && results.inclusionDelay == 1
+				if data.debug {
+					fmt.Printf("Attestation is %s\n", attestation.String())
+				}
 				return results, nil
 			}
 		}
@@ -121,6 +134,49 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 	return results, nil
 }
 
+func calcHeadCorrect(ctx context.Context, data *dataIn, attestation *phase0.Attestation) (bool, error) {
+	slot := attestation.Data.Slot
+	for {
+		header, err := data.eth2Client.(eth2client.BeaconBlockHeadersProvider).BeaconBlockHeader(ctx, fmt.Sprintf("%d", slot))
+		if err != nil {
+			return false, nil
+		}
+		if header == nil {
+			// No block.
+			slot--
+			continue
+		}
+		if !header.Canonical {
+			// Not canonical.
+			slot--
+			continue
+		}
+		return bytes.Equal(header.Root[:], attestation.Data.BeaconBlockRoot[:]), nil
+	}
+}
+
+func calcTargetCorrect(ctx context.Context, data *dataIn, attestation *phase0.Attestation) (bool, error) {
+	// Start with first slot of the target epoch.
+	slot := data.chainTime.FirstSlotOfEpoch(attestation.Data.Target.Epoch)
+	for {
+		header, err := data.eth2Client.(eth2client.BeaconBlockHeadersProvider).BeaconBlockHeader(ctx, fmt.Sprintf("%d", slot))
+		if err != nil {
+			return false, nil
+		}
+		if header == nil {
+			// No block.
+			slot--
+			continue
+		}
+		if !header.Canonical {
+			// Not canonical.
+			slot--
+			continue
+		}
+		return bytes.Equal(header.Root[:], attestation.Data.Target.Root[:]), nil
+	}
+}
+
 func duty(ctx context.Context, eth2Client eth2client.Service, validator *api.Validator, epoch phase0.Epoch, slotsPerEpoch uint64) (*api.AttesterDuty, error) {
 	// Find the attesting slot for the given epoch.
 	duties, err := eth2Client.(eth2client.AttesterDutiesProvider).AttesterDuties(ctx, epoch, []phase0.ValidatorIndex{validator.Index})

cmd/attesterinclusion.go

@@ -49,6 +49,7 @@ func init() {
 	attesterFlags(attesterInclusionCmd)
 	attesterInclusionCmd.Flags().Int64("epoch", -1, "the last complete epoch")
 	attesterInclusionCmd.Flags().String("pubkey", "", "the public key of the attester")
+	attesterInclusionCmd.Flags().Int64("index", -1, "the index of the attester")
 }
 
 func attesterInclusionBindings() {
@@ -58,4 +59,7 @@ func attesterInclusionBindings() {
 	if err := viper.BindPFlag("pubkey", attesterInclusionCmd.Flags().Lookup("pubkey")); err != nil {
 		panic(err)
 	}
+	if err := viper.BindPFlag("index", attesterInclusionCmd.Flags().Lookup("index")); err != nil {
+		panic(err)
+	}
 }

cmd/block/analyze/command.go

@@ -0,0 +1,136 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+	"time"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/go-bitfield"
+	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/services/chaintime"
+)
+
+type command struct {
+	quiet   bool
+	verbose bool
+	debug   bool
+
+	// Beacon node connection.
+	timeout                  time.Duration
+	connection               string
+	allowInsecureConnections bool
+
+	// Operation.
+	blockID    string
+	stream     bool
+	jsonOutput bool
+
+	// Data access.
+	eth2Client           eth2client.Service
+	chainTime            chaintime.Service
+	blocksProvider       eth2client.SignedBeaconBlockProvider
+	blockHeadersProvider eth2client.BeaconBlockHeadersProvider
+
+	// Constants.
+	timelySourceWeight uint64
+	timelyTargetWeight uint64
+	timelyHeadWeight   uint64
+	syncRewardWeight   uint64
+	proposerWeight     uint64
+	weightDenominator  uint64
+
+	// Processing.
+	priorAttestations map[string]*attestationData
+	// Head roots provides the root of the head slot at given slots.
+	headRoots map[phase0.Slot]phase0.Root
+	// Target roots provides the root of the target epoch at given slots.
+	targetRoots map[phase0.Slot]phase0.Root
+
+	// Block info.
+	// Map is slot -> committee index -> validator committee index -> votes.
+	votes map[phase0.Slot]map[phase0.CommitteeIndex]bitfield.Bitlist
+
+	// Results.
+	analysis *blockAnalysis
+}
+
+type blockAnalysis struct {
+	Slot         phase0.Slot            `json:"slot"`
+	Attestations []*attestationAnalysis `json:"attestations"`
+	SyncCommitee *syncCommitteeAnalysis `json:"sync_committee"`
+	Value        float64                `json:"value"`
+}
+
+type attestationAnalysis struct {
+	Head          phase0.Root      `json:"head"`
+	Target        phase0.Root      `json:"target"`
+	Distance      int              `json:"distance"`
+	Duplicate     *attestationData `json:"duplicate,omitempty"`
+	NewVotes      int              `json:"new_votes"`
+	Votes         int              `json:"votes"`
+	PossibleVotes int              `json:"possible_votes"`
+	HeadCorrect   bool             `json:"head_correct"`
+	HeadTimely    bool             `json:"head_timely"`
+	SourceTimely  bool             `json:"source_timely"`
+	TargetCorrect bool             `json:"target_correct"`
+	TargetTimely  bool             `json:"target_timely"`
+	Score         float64          `json:"score"`
+	Value         float64          `json:"value"`
+}
+
+type syncCommitteeAnalysis struct {
+	Contributions         int     `json:"contributions"`
+	PossibleContributions int     `json:"possible_contributions"`
+	Score                 float64 `json:"score"`
+	Value                 float64 `json:"value"`
+}
+
+type attestationData struct {
+	Block phase0.Slot `json:"block"`
+	Index int         `json:"index"`
+}
+
+func newCommand(ctx context.Context) (*command, error) {
+	c := &command{
+		quiet:             viper.GetBool("quiet"),
+		verbose:           viper.GetBool("verbose"),
+		debug:             viper.GetBool("debug"),
+		priorAttestations: make(map[string]*attestationData),
+		headRoots:         make(map[phase0.Slot]phase0.Root),
+		targetRoots:       make(map[phase0.Slot]phase0.Root),
+		votes:             make(map[phase0.Slot]map[phase0.CommitteeIndex]bitfield.Bitlist),
+	}
+
+	// Timeout.
+	if viper.GetDuration("timeout") == 0 {
+		return nil, errors.New("timeout is required")
+	}
+	c.timeout = viper.GetDuration("timeout")
+
+	if viper.GetString("connection") == "" {
+		return nil, errors.New("connection is required")
+	}
+	c.connection = viper.GetString("connection")
+	c.allowInsecureConnections = viper.GetBool("allow-insecure-connections")
+
+	c.blockID = viper.GetString("blockid")
+	c.stream = viper.GetBool("stream")
+	c.jsonOutput = viper.GetBool("json")
+
+	return c, nil
+}

cmd/block/analyze/command_internal_test.go

@@ -0,0 +1,82 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInput(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "TimeoutMissing",
+			vars: map[string]interface{}{},
+			err:  "timeout is required",
+		},
+		{
+			name: "ConnectionMissing",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+			},
+			err: "connection is required",
+		},
+		{
+			name: "ValidatorsZero",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"validators": "0",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+			err: "validators must be at least 1",
+		},
+		{
+			name: "Good",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			_, err := newCommand(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/block/analyze/output.go

@@ -0,0 +1,157 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+func (c *command) output(ctx context.Context) (string, error) {
+	if c.quiet {
+		return "", nil
+	}
+
+	if c.jsonOutput {
+		return c.outputJSON(ctx)
+	}
+
+	return c.outputTxt(ctx)
+}
+
+type attestationAnalysisJSON struct {
+	Head          string           `json:"head"`
+	Target        string           `json:"target"`
+	Distance      int              `json:"distance"`
+	Duplicate     *attestationData `json:"duplicate,omitempty"`
+	NewVotes      int              `json:"new_votes"`
+	Votes         int              `json:"votes"`
+	PossibleVotes int              `json:"possible_votes"`
+	HeadCorrect   bool             `json:"head_correct"`
+	HeadTimely    bool             `json:"head_timely"`
+	SourceTimely  bool             `json:"source_timely"`
+	TargetCorrect bool             `json:"target_correct"`
+	TargetTimely  bool             `json:"target_timely"`
+	Score         float64          `json:"score"`
+	Value         float64          `json:"value"`
+}
+
+func (a *attestationAnalysis) MarshalJSON() ([]byte, error) {
+	return json.Marshal(attestationAnalysisJSON{
+		Head:          fmt.Sprintf("%#x", a.Head),
+		Target:        fmt.Sprintf("%#x", a.Target),
+		Distance:      a.Distance,
+		Duplicate:     a.Duplicate,
+		NewVotes:      a.NewVotes,
+		Votes:         a.Votes,
+		PossibleVotes: a.PossibleVotes,
+		HeadCorrect:   a.HeadCorrect,
+		HeadTimely:    a.HeadTimely,
+		SourceTimely:  a.SourceTimely,
+		TargetCorrect: a.TargetCorrect,
+		TargetTimely:  a.TargetTimely,
+		Score:         a.Score,
+		Value:         a.Value,
+	})
+}
+
+func (c *command) outputJSON(_ context.Context) (string, error) {
+	data, err := json.Marshal(c.analysis)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}
+
+func (c *command) outputTxt(_ context.Context) (string, error) {
+	builder := strings.Builder{}
+
+	for i, attestation := range c.analysis.Attestations {
+		if c.verbose {
+			builder.WriteString("Attestation ")
+			builder.WriteString(fmt.Sprintf("%d", i))
+			builder.WriteString(": ")
+			builder.WriteString("distance ")
+			builder.WriteString(fmt.Sprintf("%d", attestation.Distance))
+			builder.WriteString(", ")
+
+			if attestation.Duplicate != nil {
+				builder.WriteString("duplicate of attestation ")
+				builder.WriteString(fmt.Sprintf("%d", attestation.Duplicate.Index))
+				builder.WriteString(" in block ")
+				builder.WriteString(fmt.Sprintf("%d", attestation.Duplicate.Block))
+				builder.WriteString("\n")
+				continue
+			}
+
+			builder.WriteString(fmt.Sprintf("%d", attestation.NewVotes))
+			builder.WriteString("/")
+			builder.WriteString(fmt.Sprintf("%d", attestation.Votes))
+			builder.WriteString("/")
+			builder.WriteString(fmt.Sprintf("%d", attestation.PossibleVotes))
+			builder.WriteString(" new/total/possible votes")
+			if attestation.NewVotes == 0 {
+				builder.WriteString("\n")
+				continue
+			} else {
+				builder.WriteString(", ")
+			}
+			switch {
+			case !attestation.HeadCorrect:
+				builder.WriteString("head vote incorrect, ")
+			case !attestation.HeadTimely:
+				builder.WriteString("head vote correct but late, ")
+			}
+
+			if !attestation.SourceTimely {
+				builder.WriteString("source vote late, ")
+			}
+
+			switch {
+			case !attestation.TargetCorrect:
+				builder.WriteString("target vote incorrect, ")
+			case !attestation.TargetTimely:
+				builder.WriteString("target vote correct but late, ")
+			}
+
+			builder.WriteString("score ")
+			builder.WriteString(fmt.Sprintf("%0.3f", attestation.Score))
+			builder.WriteString(", value ")
+			builder.WriteString(fmt.Sprintf("%0.3f", attestation.Value))
+			builder.WriteString("\n")
+		}
+	}
+
+	if c.analysis.SyncCommitee.Contributions > 0 {
+		if c.verbose {
+			builder.WriteString("Sync committee contributions: ")
+			builder.WriteString(fmt.Sprintf("%d", c.analysis.SyncCommitee.Contributions))
+			builder.WriteString(" contributions, score ")
+			builder.WriteString(fmt.Sprintf("%0.3f", c.analysis.SyncCommitee.Score))
+			builder.WriteString(", value ")
+			builder.WriteString(fmt.Sprintf("%0.3f", c.analysis.SyncCommitee.Value))
+			builder.WriteString("\n")
+		}
+	}
+
+	builder.WriteString("Value for block ")
+	builder.WriteString(fmt.Sprintf("%d", c.analysis.Slot))
+	builder.WriteString(": ")
+	builder.WriteString(fmt.Sprintf("%0.3f", c.analysis.Value))
+	builder.WriteString("\n")
+
+	return builder.String(), nil
+}

cmd/block/analyze/process.go

@@ -0,0 +1,431 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/go-bitfield"
+	standardchaintime "github.com/wealdtech/ethdo/services/chaintime/standard"
+	"github.com/wealdtech/ethdo/util"
+)
+
+func (c *command) process(ctx context.Context) error {
+	// Obtain information we need to process.
+	if err := c.setup(ctx); err != nil {
+		return err
+	}
+
+	block, err := c.blocksProvider.SignedBeaconBlock(ctx, c.blockID)
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain beacon block")
+	}
+	if block == nil {
+		return errors.New("empty beacon block")
+	}
+
+	slot, err := block.Slot()
+	if err != nil {
+		return err
+	}
+	attestations, err := block.Attestations()
+	if err != nil {
+		return err
+	}
+
+	c.analysis = &blockAnalysis{
+		Slot: slot,
+	}
+
+	// Calculate how many parents we need to fetch.
+	minSlot := slot
+	for _, attestation := range attestations {
+		if attestation.Data.Slot < minSlot {
+			minSlot = attestation.Data.Slot
+		}
+	}
+	if c.debug {
+		fmt.Printf("Need to fetch blocks to slot %d\n", minSlot)
+	}
+
+	if err := c.fetchParents(ctx, block, minSlot); err != nil {
+		return err
+	}
+
+	return c.analyze(ctx, block)
+}
+
+func (c *command) analyze(ctx context.Context, block *spec.VersionedSignedBeaconBlock) error {
+	if err := c.analyzeAttestations(ctx, block); err != nil {
+		return err
+	}
+
+	if err := c.analyzeSyncCommittees(ctx, block); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *command) analyzeAttestations(ctx context.Context, block *spec.VersionedSignedBeaconBlock) error {
+	attestations, err := block.Attestations()
+	if err != nil {
+		return err
+	}
+	slot, err := block.Slot()
+	if err != nil {
+		return err
+	}
+
+	c.analysis.Attestations = make([]*attestationAnalysis, len(attestations))
+
+	blockVotes := make(map[phase0.Slot]map[phase0.CommitteeIndex]bitfield.Bitlist)
+	for i, attestation := range attestations {
+		if c.debug {
+			fmt.Printf("Processing attestation %d\n", i)
+		}
+		analysis := &attestationAnalysis{
+			Head:     attestation.Data.BeaconBlockRoot,
+			Target:   attestation.Data.Target.Root,
+			Distance: int(slot - attestation.Data.Slot),
+		}
+
+		root, err := attestation.HashTreeRoot()
+		if err != nil {
+			return err
+		}
+		if info, exists := c.priorAttestations[fmt.Sprintf("%#x", root)]; exists {
+			analysis.Duplicate = info
+		} else {
+			data := attestation.Data
+			_, exists := blockVotes[data.Slot]
+			if !exists {
+				blockVotes[data.Slot] = make(map[phase0.CommitteeIndex]bitfield.Bitlist)
+			}
+			_, exists = blockVotes[data.Slot][data.Index]
+			if !exists {
+				blockVotes[data.Slot][data.Index] = bitfield.NewBitlist(attestation.AggregationBits.Len())
+			}
+
+			// Count new votes.
+			analysis.PossibleVotes = int(attestation.AggregationBits.Len())
+			for j := uint64(0); j < attestation.AggregationBits.Len(); j++ {
+				if attestation.AggregationBits.BitAt(j) {
+					analysis.Votes++
+					if blockVotes[data.Slot][data.Index].BitAt(j) {
+						// Already attested to in this block; skip.
+						continue
+					}
+					if c.votes[data.Slot][data.Index].BitAt(j) {
+						// Already attested to in a previous block; skip.
+						continue
+					}
+					analysis.NewVotes++
+					blockVotes[data.Slot][data.Index].SetBitAt(j, true)
+				}
+			}
+			// Calculate head correct.
+			var err error
+			analysis.HeadCorrect, err = c.calcHeadCorrect(ctx, attestation)
+			if err != nil {
+				return err
+			}
+
+			// Calculate head timely.
+			analysis.HeadTimely = attestation.Data.Slot == slot-1
+
+			// Calculate source timely.
+			analysis.SourceTimely = attestation.Data.Slot >= slot-5
+
+			// Calculate target correct.
+			analysis.TargetCorrect, err = c.calcTargetCorrect(ctx, attestation)
+			if err != nil {
+				return err
+			}
+
+			// Calculate target timely.
+			analysis.TargetTimely = attestation.Data.Slot >= slot-32
+		}
+
+		// Calculate score and value.
+		if analysis.TargetCorrect && analysis.TargetTimely {
+			analysis.Score += float64(c.timelyTargetWeight) / float64(c.weightDenominator)
+		}
+		if analysis.SourceTimely {
+			analysis.Score += float64(c.timelySourceWeight) / float64(c.weightDenominator)
+		}
+		if analysis.HeadCorrect && analysis.HeadTimely {
+			analysis.Score += float64(c.timelyHeadWeight) / float64(c.weightDenominator)
+		}
+		analysis.Value = analysis.Score * float64(analysis.NewVotes)
+		c.analysis.Value += analysis.Value
+
+		c.analysis.Attestations[i] = analysis
+	}
+
+	return nil
+}
+
+func (c *command) fetchParents(ctx context.Context, block *spec.VersionedSignedBeaconBlock, minSlot phase0.Slot) error {
+	parentRoot, err := block.ParentRoot()
+	if err != nil {
+		return err
+	}
+
+	// Obtain the parent block.
+	parentBlock, err := c.blocksProvider.SignedBeaconBlock(ctx, fmt.Sprintf("%#x", parentRoot))
+	if err != nil {
+		return err
+	}
+	if parentBlock == nil {
+		return fmt.Errorf("unable to obtain parent block %s", parentBlock)
+	}
+
+	parentSlot, err := parentBlock.Slot()
+	if err != nil {
+		return err
+	}
+	if parentSlot < minSlot {
+		return nil
+	}
+
+	if err := c.processParentBlock(ctx, parentBlock); err != nil {
+		return err
+	}
+
+	return c.fetchParents(ctx, parentBlock, minSlot)
+}
+
+func (c *command) processParentBlock(ctx context.Context, block *spec.VersionedSignedBeaconBlock) error {
+	attestations, err := block.Attestations()
+	if err != nil {
+		return err
+	}
+	slot, err := block.Slot()
+	if err != nil {
+		return err
+	}
+	if c.debug {
+		fmt.Printf("Processing block %d\n", slot)
+	}
+
+	for i, attestation := range attestations {
+		root, err := attestation.HashTreeRoot()
+		if err != nil {
+			return err
+		}
+		c.priorAttestations[fmt.Sprintf("%#x", root)] = &attestationData{
+			Block: slot,
+			Index: i,
+		}
+
+		data := attestation.Data
+		_, exists := c.votes[data.Slot]
+		if !exists {
+			c.votes[data.Slot] = make(map[phase0.CommitteeIndex]bitfield.Bitlist)
+		}
+		_, exists = c.votes[data.Slot][data.Index]
+		if !exists {
+			c.votes[data.Slot][data.Index] = bitfield.NewBitlist(attestation.AggregationBits.Len())
+		}
+		for j := uint64(0); j < attestation.AggregationBits.Len(); j++ {
+			if attestation.AggregationBits.BitAt(j) {
+				c.votes[data.Slot][data.Index].SetBitAt(j, true)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (c *command) setup(ctx context.Context) error {
+	var err error
+
+	// Connect to the client.
+	c.eth2Client, err = util.ConnectToBeaconNode(ctx, c.connection, c.timeout, c.allowInsecureConnections)
+	if err != nil {
+		return errors.Wrap(err, "failed to connect to beacon node")
+	}
+
+	c.chainTime, err = standardchaintime.New(ctx,
+		standardchaintime.WithSpecProvider(c.eth2Client.(eth2client.SpecProvider)),
+		standardchaintime.WithForkScheduleProvider(c.eth2Client.(eth2client.ForkScheduleProvider)),
+		standardchaintime.WithGenesisTimeProvider(c.eth2Client.(eth2client.GenesisTimeProvider)),
+	)
+	if err != nil {
+		return errors.Wrap(err, "failed to set up chaintime service")
+	}
+
+	// Obtain the number of active validators.
+	var isProvider bool
+	c.blocksProvider, isProvider = c.eth2Client.(eth2client.SignedBeaconBlockProvider)
+	if !isProvider {
+		return errors.New("connection does not provide signed beacon block information")
+	}
+	c.blockHeadersProvider, isProvider = c.eth2Client.(eth2client.BeaconBlockHeadersProvider)
+	if !isProvider {
+		return errors.New("connection does not provide beacon block header information")
+	}
+
+	specProvider, isProvider := c.eth2Client.(eth2client.SpecProvider)
+	if !isProvider {
+		return errors.New("connection does not provide spec information")
+	}
+
+	spec, err := specProvider.Spec(ctx)
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain spec")
+	}
+
+	tmp, exists := spec["TIMELY_SOURCE_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(14)
+	}
+	var ok bool
+	c.timelySourceWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("TIMELY_SOURCE_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["TIMELY_TARGET_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(26)
+	}
+	c.timelyTargetWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("TIMELY_TARGET_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["TIMELY_HEAD_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(14)
+	}
+	c.timelyHeadWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("TIMELY_HEAD_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["SYNC_REWARD_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(2)
+	}
+	c.syncRewardWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("SYNC_REWARD_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["PROPOSER_WEIGHT"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(8)
+	}
+	c.proposerWeight, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("PROPOSER_WEIGHT of unexpected type")
+	}
+
+	tmp, exists = spec["WEIGHT_DENOMINATOR"]
+	if !exists {
+		// Set a default value based on the Altair spec.
+		tmp = uint64(64)
+	}
+	c.weightDenominator, ok = tmp.(uint64)
+	if !ok {
+		return errors.New("WEIGHT_DENOMINATOR of unexpected type")
+	}
+	return nil
+}
+
+func (c *command) calcHeadCorrect(ctx context.Context, attestation *phase0.Attestation) (bool, error) {
+	slot := attestation.Data.Slot
+	root, exists := c.headRoots[slot]
+	if !exists {
+		for {
+			header, err := c.blockHeadersProvider.BeaconBlockHeader(ctx, fmt.Sprintf("%d", slot))
+			if err != nil {
+				return false, nil
+			}
+			if header == nil {
+				// No block.
+				slot--
+				continue
+			}
+			if !header.Canonical {
+				// Not canonical.
+				slot--
+				continue
+			}
+			c.headRoots[attestation.Data.Slot] = header.Root
+			root = header.Root
+			break
+		}
+	}
+
+	return bytes.Equal(root[:], attestation.Data.BeaconBlockRoot[:]), nil
+}
+
+func (c *command) calcTargetCorrect(ctx context.Context, attestation *phase0.Attestation) (bool, error) {
+	root, exists := c.targetRoots[attestation.Data.Slot]
+	if !exists {
+		// Start with first slot of the target epoch.
+		slot := c.chainTime.FirstSlotOfEpoch(attestation.Data.Target.Epoch)
+		for {
+			header, err := c.blockHeadersProvider.BeaconBlockHeader(ctx, fmt.Sprintf("%d", slot))
+			if err != nil {
+				return false, nil
+			}
+			if header == nil {
+				// No block.
+				slot--
+				continue
+			}
+			if !header.Canonical {
+				// Not canonical.
+				slot--
+				continue
+			}
+			c.targetRoots[attestation.Data.Slot] = header.Root
+			root = header.Root
+			break
+		}
+	}
+	return bytes.Equal(root[:], attestation.Data.Target.Root[:]), nil
+}
+
+func (c *command) analyzeSyncCommittees(ctx context.Context, block *spec.VersionedSignedBeaconBlock) error {
+	c.analysis.SyncCommitee = &syncCommitteeAnalysis{}
+	switch block.Version {
+	case spec.DataVersionPhase0:
+		return nil
+	case spec.DataVersionAltair:
+		c.analysis.SyncCommitee.Contributions = int(block.Altair.Message.Body.SyncAggregate.SyncCommitteeBits.Count())
+		c.analysis.SyncCommitee.PossibleContributions = int(block.Altair.Message.Body.SyncAggregate.SyncCommitteeBits.Len())
+		c.analysis.SyncCommitee.Score = float64(c.syncRewardWeight) / float64(c.weightDenominator)
+		c.analysis.SyncCommitee.Value = c.analysis.SyncCommitee.Score * float64(c.analysis.SyncCommitee.Contributions)
+		c.analysis.Value += c.analysis.SyncCommitee.Value
+		return nil
+	default:
+		return fmt.Errorf("unsupported block version %d", block.Version)
+	}
+}

cmd/block/analyze/process_internal_test.go

@@ -0,0 +1,63 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestProcess(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "InvalidData",
+			vars: map[string]interface{}{
+				"timeout":    "60s",
+				"validators": "1",
+				"data":       "[[",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			cmd, err := newCommand(context.Background())
+			require.NoError(t, err)
+			err = cmd.process(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/block/analyze/run.go

@@ -0,0 +1,50 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package blockanalyze
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+// Run runs the command.
+func Run(cmd *cobra.Command) (string, error) {
+	ctx := context.Background()
+
+	c, err := newCommand(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to set up command")
+	}
+
+	// Further errors do not need a usage report.
+	cmd.SilenceUsage = true
+
+	if err := c.process(ctx); err != nil {
+		return "", errors.Wrap(err, "failed to process")
+	}
+
+	if viper.GetBool("quiet") {
+		return "", nil
+	}
+
+	results, err := c.output(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain output")
+	}
+
+	return results, nil
+}

cmd/block/info/input.go

@@ -32,6 +32,7 @@ type dataIn struct {
 	// Operation.
 	eth2Client eth2client.Service
 	jsonOutput bool
+	sszOutput  bool
 	// Chain information.
 	blockID string
 	stream  bool
@@ -48,13 +49,14 @@ func input(ctx context.Context) (*dataIn, error) {
 	data.verbose = viper.GetBool("verbose")
 	data.debug = viper.GetBool("debug")
 	data.jsonOutput = viper.GetBool("json")
+	data.sszOutput = viper.GetBool("ssz")
 
 	data.stream = viper.GetBool("stream")
 
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	if viper.GetString("blockid") == "" {

cmd/block/info/input_internal_test.go

@@ -66,7 +66,7 @@ func TestInput(t *testing.T) {
 			vars: map[string]interface{}{
 				"timeout": "5s",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 		{
 			name: "ConnectionBad",
@@ -79,7 +79,7 @@ func TestInput(t *testing.T) {
 				timeout: 5 * time.Second,
 				blockID: "justified",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 		{
 			name: "BlockIDNil",

cmd/block/info/output.go

@@ -18,6 +18,7 @@ import (
 	"context"
 	"encoding/hex"
 	"fmt"
+	"math/big"
 	"sort"
 	"strings"
 	"time"
@@ -25,6 +26,7 @@ import (
 
 	eth2client "github.com/attestantio/go-eth2-client"
 	"github.com/attestantio/go-eth2-client/spec/altair"
+	"github.com/attestantio/go-eth2-client/spec/bellatrix"
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/go-bitfield"
@@ -51,6 +53,7 @@ func output(ctx context.Context, data *dataOut) (string, error) {
 func outputBlockGeneral(ctx context.Context,
 	verbose bool,
 	slot phase0.Slot,
+	blockRoot phase0.Root,
 	bodyRoot phase0.Root,
 	parentRoot phase0.Root,
 	stateRoot phase0.Root,
@@ -67,14 +70,15 @@ func outputBlockGeneral(ctx context.Context,
 	res.WriteString(fmt.Sprintf("Slot: %d\n", slot))
 	res.WriteString(fmt.Sprintf("Epoch: %d\n", phase0.Epoch(uint64(slot)/slotsPerEpoch)))
 	res.WriteString(fmt.Sprintf("Timestamp: %v\n", time.Unix(genesisTime.Unix()+int64(slot)*int64(slotDuration.Seconds()), 0)))
-	res.WriteString(fmt.Sprintf("Block root: %#x\n", bodyRoot))
+	res.WriteString(fmt.Sprintf("Block root: %#x\n", blockRoot))
 	if verbose {
+		res.WriteString(fmt.Sprintf("Body root: %#x\n", bodyRoot))
 		res.WriteString(fmt.Sprintf("Parent root: %#x\n", parentRoot))
 		res.WriteString(fmt.Sprintf("State root: %#x\n", stateRoot))
 	}
 	if len(graffiti) > 0 && hex.EncodeToString(graffiti) != "0000000000000000000000000000000000000000000000000000000000000000" {
 		if utf8.Valid(graffiti) {
-			res.WriteString(fmt.Sprintf("Graffiti: %s\n", string(graffiti)))
+			res.WriteString(fmt.Sprintf("Graffiti: %s\n", strings.TrimRight(string(graffiti), "\u0000")))
 		} else {
 			res.WriteString(fmt.Sprintf("Graffiti: %#x\n", graffiti))
 		}
@@ -109,13 +113,15 @@ func outputBlockAttestations(ctx context.Context, eth2Client eth2client.Service,
 				if !exists {
 					beaconCommittees, err := beaconCommitteesProvider.BeaconCommittees(ctx, fmt.Sprintf("%d", att.Data.Slot))
 					if err != nil {
-						return "", errors.Wrap(err, "failed to obtain beacon committees")
-					}
-					for _, beaconCommittee := range beaconCommittees {
-						if _, exists := validatorCommittees[beaconCommittee.Slot]; !exists {
-							validatorCommittees[beaconCommittee.Slot] = make(map[phase0.CommitteeIndex][]phase0.ValidatorIndex)
+						// Failed to get it; create an empty committee to stop us continually attempting to re-fetch.
+						validatorCommittees[att.Data.Slot] = make(map[phase0.CommitteeIndex][]phase0.ValidatorIndex)
+					} else {
+						for _, beaconCommittee := range beaconCommittees {
+							if _, exists := validatorCommittees[beaconCommittee.Slot]; !exists {
+								validatorCommittees[beaconCommittee.Slot] = make(map[phase0.CommitteeIndex][]phase0.ValidatorIndex)
+							}
+							validatorCommittees[beaconCommittee.Slot][beaconCommittee.Index] = beaconCommittee.Validators
 						}
-						validatorCommittees[beaconCommittee.Slot][beaconCommittee.Index] = beaconCommittee.Validators
 					}
 					committees = validatorCommittees[att.Data.Slot]
 				}
@@ -123,7 +129,9 @@ func outputBlockAttestations(ctx context.Context, eth2Client eth2client.Service,
 				res.WriteString(fmt.Sprintf("    Committee index: %d\n", att.Data.Index))
 				res.WriteString(fmt.Sprintf("    Attesters: %d/%d\n", att.AggregationBits.Count(), att.AggregationBits.Len()))
 				res.WriteString(fmt.Sprintf("    Aggregation bits: %s\n", bitlistToString(att.AggregationBits)))
-				res.WriteString(fmt.Sprintf("    Attesting indices: %s\n", attestingIndices(att.AggregationBits, committees[att.Data.Index])))
+				if _, exists := committees[att.Data.Index]; exists {
+					res.WriteString(fmt.Sprintf("    Attesting indices: %s\n", attestingIndices(att.AggregationBits, committees[att.Data.Index])))
+				}
 				res.WriteString(fmt.Sprintf("    Slot: %d\n", att.Data.Slot))
 				res.WriteString(fmt.Sprintf("    Beacon block root: %#x\n", att.Data.BeaconBlockRoot))
 				res.WriteString(fmt.Sprintf("    Source epoch: %d\n", att.Data.Source.Epoch))
@@ -261,6 +269,96 @@ func outputBlockSyncAggregate(ctx context.Context, eth2Client eth2client.Service
 	return res.String(), nil
 }
 
+func outputBellatrixBlockText(ctx context.Context, data *dataOut, signedBlock *bellatrix.SignedBeaconBlock) (string, error) {
+	if signedBlock == nil {
+		return "", errors.New("no block supplied")
+	}
+
+	body := signedBlock.Message.Body
+
+	res := strings.Builder{}
+
+	// General info.
+	blockRoot, err := signedBlock.Message.HashTreeRoot()
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain block root")
+	}
+	bodyRoot, err := signedBlock.Message.Body.HashTreeRoot()
+	if err != nil {
+		return "", errors.Wrap(err, "failed to generate body root")
+	}
+
+	tmp, err := outputBlockGeneral(ctx,
+		data.verbose,
+		signedBlock.Message.Slot,
+		blockRoot,
+		bodyRoot,
+		signedBlock.Message.ParentRoot,
+		signedBlock.Message.StateRoot,
+		signedBlock.Message.Body.Graffiti,
+		data.genesisTime,
+		data.slotDuration,
+		data.slotsPerEpoch)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	// Eth1 data.
+	if data.verbose {
+		tmp, err := outputBlockETH1Data(ctx, body.ETH1Data)
+		if err != nil {
+			return "", err
+		}
+		res.WriteString(tmp)
+	}
+
+	// Sync aggregate.
+	tmp, err = outputBlockSyncAggregate(ctx, data.eth2Client, data.verbose, signedBlock.Message.Body.SyncAggregate, phase0.Epoch(uint64(signedBlock.Message.Slot)/data.slotsPerEpoch))
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	// Attestations.
+	tmp, err = outputBlockAttestations(ctx, data.eth2Client, data.verbose, signedBlock.Message.Body.Attestations)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	// Attester slashings.
+	tmp, err = outputBlockAttesterSlashings(ctx, data.eth2Client, data.verbose, signedBlock.Message.Body.AttesterSlashings)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	res.WriteString(fmt.Sprintf("Proposer slashings: %d\n", len(body.ProposerSlashings)))
+	// Add verbose proposer slashings.
+
+	tmp, err = outputBlockDeposits(ctx, data.verbose, signedBlock.Message.Body.Deposits)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	// Voluntary exits.
+	tmp, err = outputBlockVoluntaryExits(ctx, data.eth2Client, data.verbose, signedBlock.Message.Body.VoluntaryExits)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	tmp, err = outputBlockExecutionPayload(ctx, data.verbose, signedBlock.Message.Body.ExecutionPayload)
+	if err != nil {
+		return "", err
+	}
+	res.WriteString(tmp)
+
+	return res.String(), nil
+}
+
 func outputAltairBlockText(ctx context.Context, data *dataOut, signedBlock *altair.SignedBeaconBlock) (string, error) {
 	if signedBlock == nil {
 		return "", errors.New("no block supplied")
@@ -271,13 +369,19 @@ func outputAltairBlockText(ctx context.Context, data *dataOut, signedBlock *alta
 	res := strings.Builder{}
 
 	// General info.
+	blockRoot, err := signedBlock.Message.HashTreeRoot()
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain block root")
+	}
 	bodyRoot, err := signedBlock.Message.Body.HashTreeRoot()
 	if err != nil {
-		return "", errors.Wrap(err, "failed to generate block root")
+		return "", errors.Wrap(err, "failed to generate body root")
 	}
+
 	tmp, err := outputBlockGeneral(ctx,
 		data.verbose,
 		signedBlock.Message.Slot,
+		blockRoot,
 		bodyRoot,
 		signedBlock.Message.ParentRoot,
 		signedBlock.Message.StateRoot,
@@ -349,6 +453,10 @@ func outputPhase0BlockText(ctx context.Context, data *dataOut, signedBlock *phas
 	res := strings.Builder{}
 
 	// General info.
+	blockRoot, err := signedBlock.Message.HashTreeRoot()
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain block root")
+	}
 	bodyRoot, err := signedBlock.Message.Body.HashTreeRoot()
 	if err != nil {
 		return "", errors.Wrap(err, "failed to generate block root")
@@ -356,6 +464,7 @@ func outputPhase0BlockText(ctx context.Context, data *dataOut, signedBlock *phas
 	tmp, err := outputBlockGeneral(ctx,
 		data.verbose,
 		signedBlock.Message.Slot,
+		blockRoot,
 		bodyRoot,
 		signedBlock.Message.ParentRoot,
 		signedBlock.Message.StateRoot,
@@ -410,6 +519,56 @@ func outputPhase0BlockText(ctx context.Context, data *dataOut, signedBlock *phas
 	return res.String(), nil
 }
 
+func outputBlockExecutionPayload(ctx context.Context,
+	verbose bool,
+	payload *bellatrix.ExecutionPayload,
+) (
+	string,
+	error,
+) {
+	if payload == nil {
+		return "", nil
+	}
+
+	res := strings.Builder{}
+	res.WriteString("Execution payload:\n")
+	res.WriteString("  Execution block number: ")
+	res.WriteString(fmt.Sprintf("%d\n", payload.BlockNumber))
+	if verbose {
+		baseFeePerGasBEBytes := make([]byte, len(payload.BaseFeePerGas))
+		for i := 0; i < 32; i++ {
+			baseFeePerGasBEBytes[i] = payload.BaseFeePerGas[32-1-i]
+		}
+		baseFeePerGas := new(big.Int).SetBytes(baseFeePerGasBEBytes)
+		res.WriteString("  Base fee per gas: ")
+		res.WriteString(string2eth.WeiToString(baseFeePerGas, true))
+		res.WriteString("\n  Block hash: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.BlockHash))
+		res.WriteString("  Parent hash: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.ParentHash))
+		res.WriteString("  Fee recipient: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.FeeRecipient))
+		res.WriteString("  Gas limit: ")
+		res.WriteString(fmt.Sprintf("%d\n", payload.GasLimit))
+		res.WriteString("  Gas used: ")
+		res.WriteString(fmt.Sprintf("%d\n", payload.GasUsed))
+		res.WriteString("  Timestamp: ")
+		res.WriteString(fmt.Sprintf("%s (%d)\n", time.Unix(int64(payload.Timestamp), 0).String(), payload.Timestamp))
+		res.WriteString("  Prev RANDAO: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.PrevRandao))
+		res.WriteString("  Receipts root: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.ReceiptsRoot))
+		res.WriteString("  State root: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.StateRoot))
+		res.WriteString("  Extra data: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.ExtraData))
+		res.WriteString("  Logs bloom: ")
+		res.WriteString(fmt.Sprintf("%#x\n", payload.LogsBloom))
+	}
+
+	return res.String(), nil
+}
+
 // intersection returns a list of items common between the two sets.
 func intersection(set1 []uint64, set2 []uint64) []phase0.ValidatorIndex {
 	sort.Slice(set1, func(i, j int) bool { return set1[i] < set1[j] })

cmd/block/info/process.go

@@ -23,11 +23,13 @@ import (
 	api "github.com/attestantio/go-eth2-client/api/v1"
 	"github.com/attestantio/go-eth2-client/spec"
 	"github.com/attestantio/go-eth2-client/spec/altair"
+	"github.com/attestantio/go-eth2-client/spec/bellatrix"
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 )
 
 var jsonOutput bool
+var sszOutput bool
 var results *dataOut
 
 func process(ctx context.Context, data *dataIn) (*dataOut, error) {
@@ -66,7 +68,11 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 			return nil, errors.Wrap(err, "failed to output block")
 		}
 	case spec.DataVersionAltair:
-		if err := outputAltairBlock(ctx, data.jsonOutput, signedBlock.Altair); err != nil {
+		if err := outputAltairBlock(ctx, data.jsonOutput, data.sszOutput, signedBlock.Altair); err != nil {
+			return nil, errors.Wrap(err, "failed to output block")
+		}
+	case spec.DataVersionBellatrix:
+		if err := outputBellatrixBlock(ctx, data.jsonOutput, data.sszOutput, signedBlock.Bellatrix); err != nil {
 			return nil, errors.Wrap(err, "failed to output block")
 		}
 	default:
@@ -75,6 +81,7 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 
 	if data.stream {
 		jsonOutput = data.jsonOutput
+		sszOutput = data.sszOutput
 		err := data.eth2Client.(eth2client.EventsProvider).Events(ctx, []string{"head"}, headEventHandler)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to start block stream")
@@ -94,26 +101,43 @@ func headEventHandler(event *api.Event) {
 	blockID := fmt.Sprintf("%#x", event.Data.(*api.HeadEvent).Block[:])
 	signedBlock, err := results.eth2Client.(eth2client.SignedBeaconBlockProvider).SignedBeaconBlock(context.Background(), blockID)
 	if err != nil {
-		fmt.Printf("Failed to obtain block: %v\n", err)
+		if !jsonOutput {
+			fmt.Printf("Failed to obtain block: %v\n", err)
+		}
 		return
 	}
 	if signedBlock == nil {
-		fmt.Println("Empty beacon block")
+		if !jsonOutput {
+			fmt.Println("Empty beacon block")
+		}
 		return
 	}
 	switch signedBlock.Version {
 	case spec.DataVersionPhase0:
 		if err := outputPhase0Block(context.Background(), jsonOutput, signedBlock.Phase0); err != nil {
-			fmt.Printf("Failed to output block: %v\n", err)
+			if !jsonOutput {
+				fmt.Printf("Failed to output block: %v\n", err)
+			}
 			return
 		}
 	case spec.DataVersionAltair:
-		if err := outputAltairBlock(context.Background(), jsonOutput, signedBlock.Altair); err != nil {
-			fmt.Printf("Failed to output block: %v\n", err)
+		if err := outputAltairBlock(context.Background(), jsonOutput, sszOutput, signedBlock.Altair); err != nil {
+			if !jsonOutput {
+				fmt.Printf("Failed to output block: %v\n", err)
+			}
+			return
+		}
+	case spec.DataVersionBellatrix:
+		if err := outputBellatrixBlock(context.Background(), jsonOutput, sszOutput, signedBlock.Bellatrix); err != nil {
+			if !jsonOutput {
+				fmt.Printf("Failed to output block: %v\n", err)
+			}
 			return
 		}
 	default:
-		fmt.Printf("Unknown block version: %v\n", signedBlock.Version)
+		if !jsonOutput {
+			fmt.Printf("Unknown block version: %v\n", signedBlock.Version)
+		}
 		return
 	}
 }
@@ -136,7 +160,7 @@ func outputPhase0Block(ctx context.Context, jsonOutput bool, signedBlock *phase0
 	return nil
 }
 
-func outputAltairBlock(ctx context.Context, jsonOutput bool, signedBlock *altair.SignedBeaconBlock) error {
+func outputAltairBlock(ctx context.Context, jsonOutput bool, sszOutput bool, signedBlock *altair.SignedBeaconBlock) error {
 	switch {
 	case jsonOutput:
 		data, err := json.Marshal(signedBlock)
@@ -144,6 +168,12 @@ func outputAltairBlock(ctx context.Context, jsonOutput bool, signedBlock *altair
 			return errors.Wrap(err, "failed to generate JSON")
 		}
 		fmt.Printf("%s\n", string(data))
+	case sszOutput:
+		data, err := signedBlock.MarshalSSZ()
+		if err != nil {
+			return errors.Wrap(err, "failed to generate SSZ")
+		}
+		fmt.Printf("%x\n", data)
 	default:
 		data, err := outputAltairBlockText(ctx, results, signedBlock)
 		if err != nil {
@@ -153,3 +183,27 @@ func outputAltairBlock(ctx context.Context, jsonOutput bool, signedBlock *altair
 	}
 	return nil
 }
+
+func outputBellatrixBlock(ctx context.Context, jsonOutput bool, sszOutput bool, signedBlock *bellatrix.SignedBeaconBlock) error {
+	switch {
+	case jsonOutput:
+		data, err := json.Marshal(signedBlock)
+		if err != nil {
+			return errors.Wrap(err, "failed to generate JSON")
+		}
+		fmt.Printf("%s\n", string(data))
+	case sszOutput:
+		data, err := signedBlock.MarshalSSZ()
+		if err != nil {
+			return errors.Wrap(err, "failed to generate SSZ")
+		}
+		fmt.Printf("%x\n", data)
+	default:
+		data, err := outputBellatrixBlockText(ctx, results, signedBlock)
+		if err != nil {
+			return errors.Wrap(err, "failed to generate text")
+		}
+		fmt.Printf("%s\n", data)
+	}
+	return nil
+}

cmd/block/info/process_internal_test.go

@@ -47,7 +47,7 @@ func TestProcess(t *testing.T) {
 			dataIn: &dataIn{
 				eth2Client: eth2Client,
 			},
-			err: "failed to output block: failed to generate text: no block supplied",
+			err: "empty beacon block",
 		},
 	}
 

cmd/blockanalyze.go

@@ -0,0 +1,65 @@
+// Copyright © 2022 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	blockanalyze "github.com/wealdtech/ethdo/cmd/block/analyze"
+)
+
+var blockAnalyzeCmd = &cobra.Command{
+	Use:   "analyze",
+	Short: "Analyze a block",
+	Long: `Analyze the contents of a block.  For example:
+
+    ethdo block analyze --blockid=12345
+
+In quiet mode this will return 0 if the block information is present and not skipped, otherwise 1.`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		res, err := blockanalyze.Run(cmd)
+		if err != nil {
+			return err
+		}
+		if viper.GetBool("quiet") {
+			return nil
+		}
+		if res != "" {
+			fmt.Print(res)
+		}
+		return nil
+	},
+}
+
+func init() {
+	blockCmd.AddCommand(blockAnalyzeCmd)
+	blockFlags(blockAnalyzeCmd)
+	blockAnalyzeCmd.Flags().String("blockid", "head", "the ID of the block to fetch")
+	blockAnalyzeCmd.Flags().Bool("stream", false, "continually stream blocks as they arrive")
+	blockAnalyzeCmd.Flags().Bool("json", false, "output data in JSON format")
+}
+
+func blockAnalyzeBindings() {
+	if err := viper.BindPFlag("blockid", blockAnalyzeCmd.Flags().Lookup("blockid")); err != nil {
+		panic(err)
+	}
+	if err := viper.BindPFlag("stream", blockAnalyzeCmd.Flags().Lookup("stream")); err != nil {
+		panic(err)
+	}
+	if err := viper.BindPFlag("json", blockAnalyzeCmd.Flags().Lookup("json")); err != nil {
+		panic(err)
+	}
+}

cmd/blockinfo.go

@@ -26,7 +26,7 @@ var blockInfoCmd = &cobra.Command{
 	Short: "Obtain information about a block",
 	Long: `Obtain information about a block.  For example:
 
-    ethdo block info --slot=12345
+    ethdo block info --blockid=12345
 
 In quiet mode this will return 0 if the block information is present and not skipped, otherwise 1.`,
 	RunE: func(cmd *cobra.Command, args []string) error {
@@ -50,6 +50,7 @@ func init() {
 	blockInfoCmd.Flags().String("blockid", "head", "the ID of the block to fetch")
 	blockInfoCmd.Flags().Bool("stream", false, "continually stream blocks as they arrive")
 	blockInfoCmd.Flags().Bool("json", false, "output data in JSON format")
+	blockInfoCmd.Flags().Bool("ssz", false, "output data in SSZ format")
 }
 
 func blockInfoBindings() {
@@ -62,4 +63,7 @@ func blockInfoBindings() {
 	if err := viper.BindPFlag("json", blockInfoCmd.Flags().Lookup("json")); err != nil {
 		panic(err)
 	}
+	if err := viper.BindPFlag("ssz", blockInfoCmd.Flags().Lookup("ssz")); err != nil {
+		panic(err)
+	}
 }

cmd/chain/time/output.go

@@ -28,12 +28,17 @@ type dataOut struct {
 	quiet   bool
 	verbose bool
 
-	epoch      spec.Epoch
-	epochStart time.Time
-	epochEnd   time.Time
-	slot       spec.Slot
-	slotStart  time.Time
-	slotEnd    time.Time
+	epoch                         spec.Epoch
+	epochStart                    time.Time
+	epochEnd                      time.Time
+	slot                          spec.Slot
+	slotStart                     time.Time
+	slotEnd                       time.Time
+	syncCommitteePeriod           uint64
+	syncCommitteePeriodStart      time.Time
+	syncCommitteePeriodEpochStart spec.Epoch
+	syncCommitteePeriodEnd        time.Time
+	syncCommitteePeriodEpochEnd   spec.Epoch
 }
 
 func output(ctx context.Context, data *dataOut) (string, error) {
@@ -60,7 +65,18 @@ func output(ctx context.Context, data *dataOut) (string, error) {
 	builder.WriteString(data.slotStart.Format("2006-01-02 15:04:05"))
 	builder.WriteString("\n  Slot end ")
 	builder.WriteString(data.slotEnd.Format("2006-01-02 15:04:05"))
-	builder.WriteString("\n")
+
+	builder.WriteString("\nSync committee period ")
+	builder.WriteString(fmt.Sprintf("%d", data.syncCommitteePeriod))
+	builder.WriteString("\n  Sync committee period start ")
+	builder.WriteString(data.syncCommitteePeriodStart.Format("2006-01-02 15:04:05"))
+	builder.WriteString(" (epoch ")
+	builder.WriteString(fmt.Sprintf("%d", data.syncCommitteePeriodEpochStart))
+	builder.WriteString(")\n  Sync committee period end ")
+	builder.WriteString(data.syncCommitteePeriodEnd.Format("2006-01-02 15:04:05"))
+	builder.WriteString(" (epoch ")
+	builder.WriteString(fmt.Sprintf("%d", data.syncCommitteePeriodEpochEnd))
+	builder.WriteString(")\n")
 
 	return builder.String(), nil
 }

cmd/chain/time/process.go

@@ -19,7 +19,7 @@ import (
 	"time"
 
 	eth2client "github.com/attestantio/go-eth2-client"
-	spec "github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 	"github.com/wealdtech/ethdo/util"
 )
@@ -41,6 +41,7 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 
 	slotsPerEpoch := config["SLOTS_PER_EPOCH"].(uint64)
 	slotDuration := config["SECONDS_PER_SLOT"].(time.Duration)
+	epochsPerSyncCommitteePeriod := config["EPOCHS_PER_SYNC_COMMITTEE_PERIOD"].(uint64)
 	genesis, err := eth2Client.(eth2client.GenesisProvider).Genesis(ctx)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to obtain genesis data")
@@ -59,13 +60,13 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to parse slot")
 		}
-		results.slot = spec.Slot(slot)
+		results.slot = phase0.Slot(slot)
 	case data.epoch != "":
 		epoch, err := strconv.ParseUint(data.epoch, 10, 64)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to parse epoch")
 		}
-		results.slot = spec.Slot(epoch * slotsPerEpoch)
+		results.slot = phase0.Slot(epoch * slotsPerEpoch)
 	case data.timestamp != "":
 		timestamp, err := time.Parse("2006-01-02T15:04:05-0700", data.timestamp)
 		if err != nil {
@@ -75,15 +76,20 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 		if secs < 0 {
 			return nil, errors.New("timestamp prior to genesis")
 		}
-		results.slot = spec.Slot(secs / slotDuration)
+		results.slot = phase0.Slot(secs / slotDuration)
 	}
 
 	// Fill in the info given the slot.
 	results.slotStart = genesis.GenesisTime.Add(time.Duration(results.slot) * slotDuration)
 	results.slotEnd = genesis.GenesisTime.Add(time.Duration(results.slot+1) * slotDuration)
-	results.epoch = spec.Epoch(uint64(results.slot) / slotsPerEpoch)
+	results.epoch = phase0.Epoch(uint64(results.slot) / slotsPerEpoch)
 	results.epochStart = genesis.GenesisTime.Add(time.Duration(uint64(results.epoch)*slotsPerEpoch) * slotDuration)
 	results.epochEnd = genesis.GenesisTime.Add(time.Duration(uint64(results.epoch+1)*slotsPerEpoch) * slotDuration)
+	results.syncCommitteePeriod = uint64(results.epoch) / epochsPerSyncCommitteePeriod
+	results.syncCommitteePeriodEpochStart = phase0.Epoch(results.syncCommitteePeriod * epochsPerSyncCommitteePeriod)
+	results.syncCommitteePeriodEpochEnd = phase0.Epoch((results.syncCommitteePeriod+1)*epochsPerSyncCommitteePeriod) - 1
+	results.syncCommitteePeriodStart = genesis.GenesisTime.Add(time.Duration(uint64(results.syncCommitteePeriodEpochStart)*slotsPerEpoch) * slotDuration)
+	results.syncCommitteePeriodEnd = genesis.GenesisTime.Add(time.Duration(uint64(results.syncCommitteePeriodEpochEnd)*slotsPerEpoch) * slotDuration)
 
 	return results, nil
 }

cmd/chain/time/process_internal_test.go

@@ -15,6 +15,7 @@ package chaintime
 
 import (
 	"context"
+	"fmt"
 	"os"
 	"testing"
 	"time"
@@ -46,11 +47,16 @@ func TestProcess(t *testing.T) {
 				slot:                     "1",
 			},
 			expected: &dataOut{
-				epochStart: time.Unix(1606824023, 0),
-				epochEnd:   time.Unix(1606824407, 0),
-				slot:       1,
-				slotStart:  time.Unix(1606824035, 0),
-				slotEnd:    time.Unix(1606824047, 0),
+				epochStart:                    time.Unix(1606824023, 0),
+				epochEnd:                      time.Unix(1606824407, 0),
+				slot:                          1,
+				slotStart:                     time.Unix(1606824035, 0),
+				slotEnd:                       time.Unix(1606824047, 0),
+				syncCommitteePeriod:           0,
+				syncCommitteePeriodStart:      time.Unix(1606824023, 0),
+				syncCommitteePeriodEnd:        time.Unix(1606921943, 0),
+				syncCommitteePeriodEpochStart: 0,
+				syncCommitteePeriodEpochEnd:   255,
 			},
 		},
 		{
@@ -62,12 +68,17 @@ func TestProcess(t *testing.T) {
 				epoch:                    "2",
 			},
 			expected: &dataOut{
-				epoch:      2,
-				epochStart: time.Unix(1606824791, 0),
-				epochEnd:   time.Unix(1606825175, 0),
-				slot:       64,
-				slotStart:  time.Unix(1606824791, 0),
-				slotEnd:    time.Unix(1606824803, 0),
+				epoch:                         2,
+				epochStart:                    time.Unix(1606824791, 0),
+				epochEnd:                      time.Unix(1606825175, 0),
+				slot:                          64,
+				slotStart:                     time.Unix(1606824791, 0),
+				slotEnd:                       time.Unix(1606824803, 0),
+				syncCommitteePeriod:           0,
+				syncCommitteePeriodStart:      time.Unix(1606824023, 0),
+				syncCommitteePeriodEnd:        time.Unix(1606921943, 0),
+				syncCommitteePeriodEpochStart: 0,
+				syncCommitteePeriodEpochEnd:   255,
 			},
 		},
 		{
@@ -76,15 +87,20 @@ func TestProcess(t *testing.T) {
 				connection:               os.Getenv("ETHDO_TEST_CONNECTION"),
 				timeout:                  10 * time.Second,
 				allowInsecureConnections: true,
-				timestamp:                "2021-01-01T00:00:00",
+				timestamp:                "2021-01-01T00:00:00+0000",
 			},
 			expected: &dataOut{
-				epoch:      6862,
-				epochStart: time.Unix(1609459031, 0),
-				epochEnd:   time.Unix(1609459415, 0),
-				slot:       219598,
-				slotStart:  time.Unix(1609459199, 0),
-				slotEnd:    time.Unix(1609459211, 0),
+				epoch:                         6862,
+				epochStart:                    time.Unix(1609459031, 0),
+				epochEnd:                      time.Unix(1609459415, 0),
+				slot:                          219598,
+				slotStart:                     time.Unix(1609459199, 0),
+				slotEnd:                       time.Unix(1609459211, 0),
+				syncCommitteePeriod:           26,
+				syncCommitteePeriodStart:      time.Unix(1609379927, 0),
+				syncCommitteePeriodEnd:        time.Unix(1609477847, 0),
+				syncCommitteePeriodEpochStart: 6656,
+				syncCommitteePeriodEpochEnd:   6911,
 			},
 		},
 	}
@@ -96,6 +112,7 @@ func TestProcess(t *testing.T) {
 				require.EqualError(t, err, test.err)
 			} else {
 				require.NoError(t, err)
+				fmt.Printf("****** %d %d\n", res.syncCommitteePeriodStart.Unix(), res.syncCommitteePeriodEnd.Unix())
 				require.Equal(t, test.expected, res)
 			}
 		})

cmd/chain/verify/signedcontributionandproof/command.go

@@ -0,0 +1,86 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package chainverifysignedcontributionandproof
+
+import (
+	"context"
+	"time"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	api "github.com/attestantio/go-eth2-client/api/v1"
+	"github.com/attestantio/go-eth2-client/spec/altair"
+	"github.com/pkg/errors"
+	"github.com/spf13/viper"
+)
+
+type command struct {
+	quiet   bool
+	verbose bool
+	debug   bool
+
+	// Beacon node connection.
+	timeout                  time.Duration
+	connection               string
+	allowInsecureConnections bool
+
+	// Input.
+	data string
+	item *altair.SignedContributionAndProof
+
+	// Data access.
+	eth2Client         eth2client.Service
+	validatorsProvider eth2client.ValidatorsProvider
+
+	// Data.
+	spec          map[string]interface{}
+	validator     *api.Validator
+	syncCommittee *api.SyncCommittee
+
+	// Output.
+	itemStructureValid                       bool
+	validatorKnown                           bool
+	validatorInSyncCommittee                 bool
+	validatorIsAggregator                    bool
+	contributionSignatureValidFormat         bool
+	contributionAndProofSignatureValidFormat bool
+	contributionAndProofSignatureValid       bool
+	additionalInfo                           string
+}
+
+func newCommand(ctx context.Context) (*command, error) {
+	c := &command{
+		quiet:   viper.GetBool("quiet"),
+		verbose: viper.GetBool("verbose"),
+		debug:   viper.GetBool("debug"),
+	}
+
+	// Timeout.
+	if viper.GetDuration("timeout") == 0 {
+		return nil, errors.New("timeout is required")
+	}
+	c.timeout = viper.GetDuration("timeout")
+
+	if viper.GetString("data") == "" {
+		return nil, errors.New("data is required")
+	}
+	c.data = viper.GetString("data")
+
+	if viper.GetString("connection") == "" {
+		return nil, errors.New("connection is required")
+	}
+	c.connection = viper.GetString("connection")
+	c.allowInsecureConnections = viper.GetBool("allow-insecure-connections")
+
+	return c, nil
+}

cmd/chain/verify/signedcontributionandproof/command_internal_test.go

@@ -0,0 +1,80 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package chainverifysignedcontributionandproof
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInput(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "TimeoutMissing",
+			vars: map[string]interface{}{},
+			err:  "timeout is required",
+		},
+		{
+			name: "DataMissing",
+			vars: map[string]interface{}{
+				"timeout": "5s",
+			},
+			err: "data is required",
+		},
+		{
+			name: "ConnectionMissing",
+			vars: map[string]interface{}{
+				"timeout": "5s",
+				"data":    "{}",
+			},
+			err: "connection is required",
+		},
+		{
+			name: "Good",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"data":       "{}",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			_, err := newCommand(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/chain/verify/signedcontributionandproof/output.go

@@ -0,0 +1,127 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package chainverifysignedcontributionandproof
+
+import (
+	"context"
+	"strings"
+)
+
+func (c *command) output(ctx context.Context) (string, error) {
+	if c.quiet {
+		return "", nil
+	}
+
+	builder := strings.Builder{}
+
+	builder.WriteString("Valid data structure: ")
+	if c.itemStructureValid {
+		builder.WriteString("✓\n")
+	} else {
+		builder.WriteString("✕")
+		if c.additionalInfo != "" {
+			builder.WriteString(" (")
+			builder.WriteString(c.additionalInfo)
+			builder.WriteString(")")
+		}
+		builder.WriteString("\n")
+		return builder.String(), nil
+	}
+
+	builder.WriteString("Validator known: ")
+	if c.validatorKnown {
+		builder.WriteString("✓\n")
+	} else {
+		builder.WriteString("✕")
+		if c.additionalInfo != "" {
+			builder.WriteString(" (")
+			builder.WriteString(c.additionalInfo)
+			builder.WriteString(")")
+		}
+		builder.WriteString("\n")
+		return builder.String(), nil
+	}
+
+	builder.WriteString("Validator in sync committee: ")
+	if c.validatorInSyncCommittee {
+		builder.WriteString("✓\n")
+	} else {
+		builder.WriteString("✕")
+		if c.additionalInfo != "" {
+			builder.WriteString(" (")
+			builder.WriteString(c.additionalInfo)
+			builder.WriteString(")")
+		}
+		builder.WriteString("\n")
+		return builder.String(), nil
+	}
+
+	builder.WriteString("Validator is aggregator: ")
+	if c.validatorIsAggregator {
+		builder.WriteString("✓\n")
+	} else {
+		builder.WriteString("✕")
+		if c.additionalInfo != "" {
+			builder.WriteString(" (")
+			builder.WriteString(c.additionalInfo)
+			builder.WriteString(")")
+		}
+		builder.WriteString("\n")
+		return builder.String(), nil
+	}
+
+	builder.WriteString("Contribution signature has valid format: ")
+	if c.contributionSignatureValidFormat {
+		builder.WriteString("✓\n")
+	} else {
+		builder.WriteString("✕")
+		if c.additionalInfo != "" {
+			builder.WriteString(" (")
+			builder.WriteString(c.additionalInfo)
+			builder.WriteString(")")
+		}
+		builder.WriteString("\n")
+		return builder.String(), nil
+	}
+
+	builder.WriteString("Contribution and proof signature has valid format: ")
+	if c.contributionAndProofSignatureValidFormat {
+		builder.WriteString("✓\n")
+	} else {
+		builder.WriteString("✕")
+		if c.additionalInfo != "" {
+			builder.WriteString(" (")
+			builder.WriteString(c.additionalInfo)
+			builder.WriteString(")")
+		}
+		builder.WriteString("\n")
+		return builder.String(), nil
+	}
+
+	builder.WriteString("Contribution and proof signature is valid: ")
+	if c.contributionAndProofSignatureValid {
+		builder.WriteString("✓\n")
+	} else {
+		builder.WriteString("✕")
+		if c.additionalInfo != "" {
+			builder.WriteString(" (")
+			builder.WriteString(c.additionalInfo)
+			builder.WriteString(")")
+		}
+		builder.WriteString("\n")
+		return builder.String(), nil
+	}
+
+	return builder.String(), nil
+}

cmd/chain/verify/signedcontributionandproof/process.go

@@ -0,0 +1,303 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package chainverifysignedcontributionandproof
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/binary"
+	"encoding/json"
+	"fmt"
+	"os"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec/altair"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	"github.com/wealdtech/ethdo/util"
+	e2types "github.com/wealdtech/go-eth2-types/v2"
+)
+
+func (c *command) process(ctx context.Context) error {
+	// Parse the data.
+	if c.data == "" {
+		return errors.New("no data supplied")
+	}
+	c.item = &altair.SignedContributionAndProof{}
+	err := json.Unmarshal([]byte(c.data), c.item)
+	if err != nil {
+		c.additionalInfo = err.Error()
+		return nil
+	}
+	c.itemStructureValid = true
+
+	// Obtain information we need to process.
+	if err := c.setup(ctx); err != nil {
+		return err
+	}
+
+	for _, validatorIndex := range c.syncCommittee.Validators {
+		if validatorIndex == c.item.Message.AggregatorIndex {
+			c.validatorInSyncCommittee = true
+			break
+		}
+	}
+	if !c.validatorInSyncCommittee {
+		return nil
+	}
+
+	// Ensure the validator is an aggregator.
+	isAggregator, err := c.isAggregator(ctx)
+	if err != nil {
+		return errors.Wrap(err, "failed to ascertain if sync committee member is aggregator")
+	}
+	if !isAggregator {
+		return nil
+	}
+	c.validatorIsAggregator = true
+
+	// Confirm the contribution signature.
+	if err := c.confirmContributionSignature(ctx); err != nil {
+		return errors.Wrap(err, "failed to confirm the contribution signature")
+	}
+
+	// Confirm the contribution and proof signature.
+	if err := c.confirmContributionAndProofSignature(ctx); err != nil {
+		return errors.Wrap(err, "failed to confirm the contribution and proof signature")
+	}
+
+	return nil
+}
+
+func (c *command) setup(ctx context.Context) error {
+	var err error
+
+	// Connect to the client.
+	c.eth2Client, err = util.ConnectToBeaconNode(ctx, c.connection, c.timeout, c.allowInsecureConnections)
+	if err != nil {
+		return errors.Wrap(err, "failed to connect to beacon node")
+	}
+
+	// Obtain the validator.
+	var isProvider bool
+	c.validatorsProvider, isProvider = c.eth2Client.(eth2client.ValidatorsProvider)
+	if !isProvider {
+		return errors.New("connection does not provide validator information")
+	}
+
+	stateID := fmt.Sprintf("%d", c.item.Message.Contribution.Slot)
+	validators, err := c.validatorsProvider.Validators(ctx,
+		stateID,
+		[]phase0.ValidatorIndex{c.item.Message.AggregatorIndex},
+	)
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain validator information")
+	}
+
+	if len(validators) == 0 || validators[c.item.Message.AggregatorIndex] == nil {
+		return nil
+	}
+	c.validatorKnown = true
+	c.validator = validators[c.item.Message.AggregatorIndex]
+
+	// Obtain the sync committee
+	syncCommitteesProvider, isProvider := c.eth2Client.(eth2client.SyncCommitteesProvider)
+	if !isProvider {
+		return errors.New("connection does not provide sync committee information")
+	}
+	c.syncCommittee, err = syncCommitteesProvider.SyncCommittee(ctx, stateID)
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain sync committee information")
+	}
+
+	return nil
+}
+
+// isAggregator returns true if the given
+func (c *command) isAggregator(ctx context.Context) (bool, error) {
+	// Calculate the modulo.
+	specProvider, isProvider := c.eth2Client.(eth2client.SpecProvider)
+	if !isProvider {
+		return false, errors.New("connection does not provide spec information")
+	}
+	var err error
+	c.spec, err = specProvider.Spec(ctx)
+	if err != nil {
+		return false, errors.Wrap(err, "failed to obtain spec information")
+	}
+
+	tmp, exists := c.spec["SYNC_COMMITTEE_SIZE"]
+	if !exists {
+		return false, errors.New("spec does not contain SYNC_COMMITTEE_SIZE")
+	}
+	if _, isUint64 := tmp.(uint64); !isUint64 {
+		return false, errors.New("spec returned non-integer value for SYNC_COMMITTEE_SIZE")
+	}
+	syncCommitteeSize := tmp.(uint64)
+	if c.debug {
+		fmt.Fprintf(os.Stderr, "sync committee size is %d\n", syncCommitteeSize)
+	}
+
+	tmp, exists = c.spec["SYNC_COMMITTEE_SUBNET_COUNT"]
+	if !exists {
+		return false, errors.New("spec does not contain SYNC_COMMITTEE_SUBNET_COUNT")
+	}
+	if _, isUint64 := tmp.(uint64); !isUint64 {
+		return false, errors.New("spec returned non-integer value for SYNC_COMMITTEE_SUBNET_COUNT")
+	}
+	syncCommitteeSubnetCount := tmp.(uint64)
+	if c.debug {
+		fmt.Fprintf(os.Stderr, "sync committee subnet count is %d\n", syncCommitteeSubnetCount)
+	}
+
+	tmp, exists = c.spec["TARGET_AGGREGATORS_PER_SYNC_SUBCOMMITTEE"]
+	if !exists {
+		return false, errors.New("spec does not contain TARGET_AGGREGATORS_PER_SYNC_SUBCOMMITTEE")
+	}
+	if _, isUint64 := tmp.(uint64); !isUint64 {
+		return false, errors.New("spec returned non-integer value for TARGET_AGGREGATORS_PER_SYNC_SUBCOMMITTEE")
+	}
+	targetAggregatorsPerSyncSubcommittee := tmp.(uint64)
+	if c.debug {
+		fmt.Fprintf(os.Stderr, "target aggregators per sync subcommittee is %d\n", targetAggregatorsPerSyncSubcommittee)
+	}
+
+	modulo := syncCommitteeSize / syncCommitteeSubnetCount / targetAggregatorsPerSyncSubcommittee
+	if modulo < 1 {
+		modulo = 1
+	}
+	if c.debug {
+		fmt.Fprintf(os.Stderr, "modulo is %d\n", modulo)
+	}
+
+	// Hash the selection proof.
+	sigHash := sha256.New()
+	n, err := sigHash.Write(c.item.Message.SelectionProof[:])
+	if err != nil {
+		return false, errors.Wrap(err, "failed to hash the selection proof")
+	}
+	if n != len(c.item.Signature[:]) {
+		return false, errors.New("failed to write all bytes of the selection proof to the hash")
+	}
+	hash := sigHash.Sum(nil)
+	if c.debug {
+		fmt.Fprintf(os.Stderr, "hash of selection proof is %#x\n", hash)
+	}
+
+	return binary.LittleEndian.Uint64(hash[:8])%modulo == 0, nil
+}
+
+func (c *command) confirmContributionSignature(ctx context.Context) error {
+	sigBytes := make([]byte, 96)
+	copy(sigBytes, c.item.Message.Contribution.Signature[:])
+	_, err := e2types.BLSSignatureFromBytes(sigBytes)
+	if err != nil {
+		c.additionalInfo = err.Error()
+		return nil
+	}
+	c.contributionSignatureValidFormat = true
+
+	subCommittee := c.syncCommittee.ValidatorAggregates[c.item.Message.Contribution.SubcommitteeIndex]
+	includedIndices := make([]phase0.ValidatorIndex, 0, len(subCommittee))
+	for i := uint64(0); i < c.item.Message.Contribution.AggregationBits.Len(); i++ {
+		if c.item.Message.Contribution.AggregationBits.BitAt(i) {
+			includedIndices = append(includedIndices, subCommittee[int(i)])
+		}
+	}
+	if c.debug {
+		fmt.Fprintf(os.Stderr, "Contribution validator indices: %v (%d)\n", includedIndices, len(includedIndices))
+	}
+
+	includedValidators, err := c.validatorsProvider.Validators(ctx, "head", includedIndices)
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain subcommittee validators")
+	}
+	if len(includedValidators) == 0 {
+		return errors.New("obtained empty subcommittee validator list")
+	}
+
+	var aggregatePubKey *e2types.BLSPublicKey
+	for _, v := range includedValidators {
+		pubKeyBytes := make([]byte, 48)
+		copy(pubKeyBytes, v.Validator.PublicKey[:])
+		pubKey, err := e2types.BLSPublicKeyFromBytes(pubKeyBytes)
+		if err != nil {
+			return errors.Wrap(err, "failed to aggregate public key")
+		}
+		if aggregatePubKey == nil {
+			aggregatePubKey = pubKey
+		} else {
+			aggregatePubKey.Aggregate(pubKey)
+		}
+	}
+	if c.debug {
+		fmt.Fprintf(os.Stderr, "Aggregate public key is %#x\n", aggregatePubKey.Marshal())
+	}
+
+	// Don't have the ability to carry out the batch verification at current.
+
+	return nil
+}
+
+func (c *command) confirmContributionAndProofSignature(ctx context.Context) error {
+	sigBytes := make([]byte, 96)
+	copy(sigBytes, c.item.Signature[:])
+	sig, err := e2types.BLSSignatureFromBytes(sigBytes)
+	if err != nil {
+		c.additionalInfo = err.Error()
+		return nil
+	}
+	c.contributionAndProofSignatureValidFormat = true
+
+	pubKeyBytes := make([]byte, 48)
+	copy(pubKeyBytes, c.validator.Validator.PublicKey[:])
+	pubKey, err := e2types.BLSPublicKeyFromBytes(pubKeyBytes)
+	if err != nil {
+		return errors.Wrap(err, "failed to configure public key")
+	}
+
+	objectRoot, err := c.item.Message.HashTreeRoot()
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain signging root")
+	}
+
+	tmp, exists := c.spec["DOMAIN_CONTRIBUTION_AND_PROOF"]
+	if !exists {
+		return errors.New("spec does not contain DOMAIN_CONTRIBUTION_AND_PROOF")
+	}
+	if _, isUint64 := tmp.(phase0.DomainType); !isUint64 {
+		return errors.New("spec returned non-domain type value for DOMAIN_CONTRIBUTION_AND_PROOF")
+	}
+	contributionAndProofDomainType := tmp.(phase0.DomainType)
+	if c.debug {
+		fmt.Fprintf(os.Stderr, "contribution and proof domain type is %#x\n", contributionAndProofDomainType)
+	}
+	domain, err := c.eth2Client.(eth2client.DomainProvider).Domain(ctx, contributionAndProofDomainType, phase0.Epoch(c.item.Message.Contribution.Slot/32))
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain domain")
+	}
+
+	container := &phase0.SigningData{
+		ObjectRoot: objectRoot,
+		Domain:     domain,
+	}
+	signingRoot, err := container.HashTreeRoot()
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain signging root")
+	}
+
+	c.contributionAndProofSignatureValid = sig.Verify(signingRoot[:], pubKey)
+
+	return nil
+}

cmd/chain/verify/signedcontributionandproof/process_internal_test.go

@@ -0,0 +1,62 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package chainverifysignedcontributionandproof
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestProcess(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "InvalidData",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"data":       "[[",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			cmd, err := newCommand(context.Background())
+			require.NoError(t, err)
+			err = cmd.process(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/chain/verify/signedcontributionandproof/run.go

@@ -0,0 +1,50 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package chainverifysignedcontributionandproof
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+// Run runs the command.
+func Run(cmd *cobra.Command) (string, error) {
+	ctx := context.Background()
+
+	c, err := newCommand(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to set up command")
+	}
+
+	// Further errors do not need a usage report.
+	cmd.SilenceUsage = true
+
+	if err := c.process(ctx); err != nil {
+		return "", errors.Wrap(err, "failed to process")
+	}
+
+	if viper.GetBool("quiet") {
+		return "", nil
+	}
+
+	results, err := c.output(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain output")
+	}
+
+	return results, nil
+}

cmd/chaininfo.go

@@ -85,18 +85,3 @@ func init() {
 	chainCmd.AddCommand(chainInfoCmd)
 	chainFlags(chainInfoCmd)
 }
-
-func timestampToSlot(genesis time.Time, timestamp time.Time, secondsPerSlot time.Duration) spec.Slot {
-	if timestamp.Unix() < genesis.Unix() {
-		return 0
-	}
-	return spec.Slot(uint64(timestamp.Unix()-genesis.Unix()) / uint64(secondsPerSlot.Seconds()))
-}
-
-func slotToTimestamp(genesis time.Time, slot spec.Slot, slotDuration time.Duration) int64 {
-	return genesis.Unix() + int64(slot)*int64(slotDuration.Seconds())
-}
-
-func epochToTimestamp(genesis time.Time, slot spec.Slot, slotDuration time.Duration, slotsPerEpoch uint64) int64 {
-	return genesis.Unix() + int64(slot)*int64(slotDuration.Seconds())*int64(slotsPerEpoch)
-}

cmd/chainstatus.go

@@ -1,4 +1,4 @@
-// Copyright © 2020 Weald Technology Trading
+// Copyright © 2020, 2021 Weald Technology Trading.
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -17,12 +17,13 @@ import (
 	"context"
 	"fmt"
 	"os"
+	"strings"
 	"time"
 
 	eth2client "github.com/attestantio/go-eth2-client"
-	spec "github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
+	standardchaintime "github.com/wealdtech/ethdo/services/chaintime/standard"
 	"github.com/wealdtech/ethdo/util"
 )
 
@@ -40,53 +41,116 @@ In quiet mode this will return 0 if the chain status can be obtained, otherwise
 		eth2Client, err := util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 		errCheck(err, "Failed to connect to Ethereum 2 beacon node")
 
-		specProvider, isProvider := eth2Client.(eth2client.SpecProvider)
-		assert(isProvider, "beacon node does not provide spec; cannot report on chain status")
-		config, err := specProvider.Spec(ctx)
-		errCheck(err, "Failed to obtain beacon chain specification")
+		chainTime, err := standardchaintime.New(ctx,
+			standardchaintime.WithGenesisTimeProvider(eth2Client.(eth2client.GenesisTimeProvider)),
+			standardchaintime.WithForkScheduleProvider(eth2Client.(eth2client.ForkScheduleProvider)),
+			standardchaintime.WithSpecProvider(eth2Client.(eth2client.SpecProvider)),
+		)
+		errCheck(err, "Failed to configure chaintime service")
 
 		finalityProvider, isProvider := eth2Client.(eth2client.FinalityProvider)
 		assert(isProvider, "beacon node does not provide finality; cannot report on chain status")
 		finality, err := finalityProvider.Finality(ctx, "head")
 		errCheck(err, "Failed to obtain finality information")
 
-		genesisProvider, isProvider := eth2Client.(eth2client.GenesisProvider)
-		assert(isProvider, "beacon node does not provide genesis; cannot report on chain status")
-		genesis, err := genesisProvider.Genesis(ctx)
-		errCheck(err, "Failed to obtain genesis information")
+		slot := chainTime.CurrentSlot()
 
-		slotDuration := config["SECONDS_PER_SLOT"].(time.Duration)
-		curSlot := timestampToSlot(genesis.GenesisTime, time.Now(), slotDuration)
-		slotsPerEpoch := config["SLOTS_PER_EPOCH"].(uint64)
-		curEpoch := spec.Epoch(uint64(curSlot) / slotsPerEpoch)
-		fmt.Printf("Current epoch: %d\n", curEpoch)
-		outputIf(verbose, fmt.Sprintf("Current slot: %d", curSlot))
-		fmt.Printf("Justified epoch: %d\n", finality.Justified.Epoch)
-		if verbose {
-			distance := curEpoch - finality.Justified.Epoch
-			fmt.Printf("Justified epoch distance: %d\n", distance)
-		}
-		fmt.Printf("Finalized epoch: %d\n", finality.Finalized.Epoch)
-		if verbose {
-			distance := curEpoch - finality.Finalized.Epoch
-			fmt.Printf("Finalized epoch distance: %d\n", distance)
-		}
-		if verbose {
-			fmt.Printf("Prior justified epoch: %d\n", finality.PreviousJustified.Epoch)
-			distance := curEpoch - finality.PreviousJustified.Epoch
-			fmt.Printf("Prior justified epoch distance: %d\n", distance)
-		}
+		nextSlot := slot + 1
+		nextSlotTimestamp := chainTime.StartOfSlot(nextSlot)
+
+		epoch := chainTime.CurrentEpoch()
+		epochStartSlot := chainTime.FirstSlotOfEpoch(epoch)
+		epochEndSlot := chainTime.FirstSlotOfEpoch(epoch+1) - 1
+
+		nextEpoch := epoch + 1
+		nextEpochStartSlot := chainTime.FirstSlotOfEpoch(nextEpoch)
+		nextEpochTimestamp := chainTime.StartOfEpoch(nextEpoch)
+
+		res := strings.Builder{}
+
+		res.WriteString("Current slot: ")
+		res.WriteString(fmt.Sprintf("%d", slot))
+		res.WriteString("\n")
+
+		res.WriteString("Current epoch: ")
+		res.WriteString(fmt.Sprintf("%d", epoch))
+		res.WriteString("\n")
 
 		if verbose {
-			epochStartSlot := (uint64(curSlot) / slotsPerEpoch) * slotsPerEpoch
-			fmt.Printf("Epoch slots: %d-%d\n", epochStartSlot, epochStartSlot+slotsPerEpoch-1)
-			nextSlotTimestamp := slotToTimestamp(genesis.GenesisTime, curSlot+1, slotDuration)
-			fmt.Printf("Time until next slot: %2.1fs\n", float64(time.Until(time.Unix(nextSlotTimestamp, 0)).Milliseconds())/1000)
-			nextEpoch := epochToTimestamp(genesis.GenesisTime, spec.Slot(uint64(curSlot)/slotsPerEpoch+1), slotDuration, slotsPerEpoch)
-			fmt.Printf("Slots until next epoch: %d\n", (uint64(curSlot)/slotsPerEpoch+1)*slotsPerEpoch-uint64(curSlot))
-			fmt.Printf("Time until next epoch: %2.1fs\n", float64(time.Until(time.Unix(nextEpoch, 0)).Milliseconds())/1000)
+			res.WriteString("Epoch slots: ")
+			res.WriteString(fmt.Sprintf("%d", epochStartSlot))
+			res.WriteString("-")
+			res.WriteString(fmt.Sprintf("%d", epochEndSlot))
+			res.WriteString("\n")
 		}
 
+		res.WriteString("Time until next slot: ")
+		res.WriteString(time.Until(nextSlotTimestamp).Round(time.Second).String())
+		res.WriteString("\n")
+
+		res.WriteString("Time until next epoch: ")
+		res.WriteString(time.Until(nextEpochTimestamp).Round(time.Second).String())
+		res.WriteString("\n")
+
+		res.WriteString("Slots until next epoch: ")
+		res.WriteString(fmt.Sprintf("%d", nextEpochStartSlot-slot))
+		res.WriteString("\n")
+
+		res.WriteString("Justified epoch: ")
+		res.WriteString(fmt.Sprintf("%d", finality.Justified.Epoch))
+		res.WriteString("\n")
+		if verbose {
+			distance := epoch - finality.Justified.Epoch
+			res.WriteString("Justified epoch distance: ")
+			res.WriteString(fmt.Sprintf("%d", distance))
+			res.WriteString("\n")
+		}
+
+		res.WriteString("Finalized epoch: ")
+		res.WriteString(fmt.Sprintf("%d", finality.Finalized.Epoch))
+		res.WriteString("\n")
+		if verbose {
+			distance := epoch - finality.Finalized.Epoch
+			res.WriteString("Finalized epoch distance: ")
+			res.WriteString(fmt.Sprintf("%d", distance))
+			res.WriteString("\n")
+		}
+
+		if epoch >= chainTime.AltairInitialEpoch() {
+			period := chainTime.SlotToSyncCommitteePeriod(slot)
+			periodStartEpoch := chainTime.FirstEpochOfSyncPeriod(period)
+			periodStartSlot := chainTime.FirstSlotOfEpoch(periodStartEpoch)
+			nextPeriod := period + 1
+			nextPeriodStartEpoch := chainTime.FirstEpochOfSyncPeriod(nextPeriod)
+			periodEndEpoch := nextPeriodStartEpoch - 1
+			periodEndSlot := chainTime.FirstSlotOfEpoch(periodEndEpoch+1) - 1
+			nextPeriodTimestamp := chainTime.StartOfEpoch(nextPeriodStartEpoch)
+
+			res.WriteString("Sync committee period: ")
+			res.WriteString(fmt.Sprintf("%d", period))
+			res.WriteString("\n")
+
+			if verbose {
+				res.WriteString("Sync committee epochs: ")
+				res.WriteString(fmt.Sprintf("%d", periodStartEpoch))
+				res.WriteString("-")
+				res.WriteString(fmt.Sprintf("%d", periodEndEpoch))
+				res.WriteString("\n")
+
+				res.WriteString("Sync committee slots: ")
+				res.WriteString(fmt.Sprintf("%d", periodStartSlot))
+				res.WriteString("-")
+				res.WriteString(fmt.Sprintf("%d", periodEndSlot))
+				res.WriteString("\n")
+
+				res.WriteString("Time until next sync committee period: ")
+				res.WriteString(time.Until(nextPeriodTimestamp).Round(time.Second).String())
+				res.WriteString("\n")
+			}
+		}
+
+		fmt.Print(res.String())
+
 		os.Exit(_exitSuccess)
 	},
 }

cmd/chainverify.go

@@ -0,0 +1,45 @@
+// Copyright © 2021 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+// chainVerifyCmd represents the chain verify command
+var chainVerifyCmd = &cobra.Command{
+	Use:   "verify",
+	Short: "Verify a beacon chain signature",
+	Long:  "Verify the signature for a given beacon chain structure is correct",
+}
+
+func init() {
+	chainCmd.AddCommand(chainVerifyCmd)
+}
+
+func chainVerifyFlags(cmd *cobra.Command) {
+	chainFlags(cmd)
+	cmd.Flags().String("validator", "", "The account, public key or index of the validator")
+	cmd.Flags().String("data", "", "The data to verify, as a JSON structure")
+}
+
+func chainVerifyBindings(cmd *cobra.Command) {
+	if err := viper.BindPFlag("validator", cmd.Flags().Lookup("validator")); err != nil {
+		panic(err)
+	}
+	if err := viper.BindPFlag("data", cmd.Flags().Lookup("data")); err != nil {
+		panic(err)
+	}
+}

cmd/chainverifysignedcontributionandproof.go

@@ -0,0 +1,50 @@
+// Copyright © 2021 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	chainverifysignedcontributionandproof "github.com/wealdtech/ethdo/cmd/chain/verify/signedcontributionandproof"
+)
+
+var chainVerifySignedContributionAndProofCmd = &cobra.Command{
+	Use:   "signedcontributionandproof",
+	Short: "Verify a signed contribution and proof",
+	Long: `Verify a signed contribution and proof.  For example:
+
+    ethdo chain verify signedcontributionandproof --data=... --validator=...
+
+validator can be an account, a public key or an index.`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		res, err := chainverifysignedcontributionandproof.Run(cmd)
+		if err != nil {
+			return err
+		}
+		if res != "" {
+			fmt.Print(res)
+		}
+		return nil
+	},
+}
+
+func init() {
+	chainVerifyCmd.AddCommand(chainVerifySignedContributionAndProofCmd)
+	chainVerifyFlags(chainVerifySignedContributionAndProofCmd)
+}
+
+func chainVerifySignedContributionAndProofBindings(cmd *cobra.Command) {
+	chainVerifyBindings(cmd)
+}

cmd/node/events/input.go

@@ -52,7 +52,7 @@ func input(ctx context.Context) (*dataIn, error) {
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	return data, nil

cmd/node/events/input_internal_test.go

@@ -66,7 +66,7 @@ func TestInput(t *testing.T) {
 			vars: map[string]interface{}{
 				"timeout": "5s",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 		{
 			name: "ConnectionBad",
@@ -75,7 +75,7 @@ func TestInput(t *testing.T) {
 				"connection": "localhost:1",
 				"topics":     []string{"one", "two"},
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 		{
 			name: "TopicsNil",

cmd/root.go

@@ -1,4 +1,4 @@
-// Copyright © 2019 Weald Technology Trading
+// Copyright © 2019 - 2021 Weald Technology Trading.
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -64,8 +64,21 @@ func persistentPreRunE(cmd *cobra.Command, args []string) error {
 	quiet = viper.GetBool("quiet")
 	verbose = viper.GetBool("verbose")
 	debug = viper.GetBool("debug")
-	// Command-specific bindings.
-	switch fmt.Sprintf("%s/%s", cmd.Parent().Name(), cmd.Name()) {
+
+	includeCommandBindings(cmd)
+
+	if quiet && verbose {
+		fmt.Println("Cannot supply both quiet and verbose flags")
+	}
+	if quiet && debug {
+		fmt.Println("Cannot supply both quiet and debug flags")
+	}
+
+	return util.SetupStore()
+}
+
+func includeCommandBindings(cmd *cobra.Command) {
+	switch commandPath(cmd) {
 	case "account/create":
 		accountCreateBindings()
 	case "account/derive":
@@ -76,16 +89,22 @@ func persistentPreRunE(cmd *cobra.Command, args []string) error {
 		attesterDutiesBindings()
 	case "attester/inclusion":
 		attesterInclusionBindings()
+	case "block/analyze":
+		blockAnalyzeBindings()
 	case "block/info":
 		blockInfoBindings()
 	case "chain/time":
 		chainTimeBindings()
+	case "chain/verify/signedcontributionandproof":
+		chainVerifySignedContributionAndProofBindings(cmd)
 	case "exit/verify":
 		exitVerifyBindings()
 	case "node/events":
 		nodeEventsBindings()
 	case "slot/time":
 		slotTimeBindings()
+	case "synccommittee/inclusion":
+		synccommitteeInclusionBindings()
 	case "synccommittee/members":
 		synccommitteeMembersBindings()
 	case "validator/depositdata":
@@ -98,6 +117,8 @@ func persistentPreRunE(cmd *cobra.Command, args []string) error {
 		validatorInfoBindings()
 	case "validator/keycheck":
 		validatorKeycheckBindings()
+	case "validator/expectation":
+		validatorExpectationBindings()
 	case "wallet/create":
 		walletCreateBindings()
 	case "wallet/import":
@@ -107,15 +128,6 @@ func persistentPreRunE(cmd *cobra.Command, args []string) error {
 	case "wallet/sharedimport":
 		walletSharedImportBindings()
 	}
-
-	if quiet && verbose {
-		fmt.Println("Cannot supply both quiet and verbose flags")
-	}
-	if quiet && debug {
-		fmt.Println("Cannot supply both quiet and debug flags")
-	}
-
-	return util.SetupStore()
 }
 
 // Execute adds all child commands to the root command and sets flags appropriately.
@@ -197,7 +209,7 @@ func init() {
 	if err := viper.BindPFlag("debug", RootCmd.PersistentFlags().Lookup("debug")); err != nil {
 		panic(err)
 	}
-	RootCmd.PersistentFlags().String("connection", "localhost:4000", "connection to an Ethereum 2 node")
+	RootCmd.PersistentFlags().String("connection", "http://localhost:3500", "URL to an Ethereum 2 node's RET API endpoint")
 	if err := viper.BindPFlag("connection", RootCmd.PersistentFlags().Lookup("connection")); err != nil {
 		panic(err)
 	}
@@ -389,3 +401,14 @@ func remotesToEndpoints(remotes []string) ([]*dirk.Endpoint, error) {
 func relockAccount(locker e2wtypes.AccountLocker) {
 	errCheck(locker.Lock(context.Background()), "failed to re-lock account")
 }
+
+func commandPath(cmd *cobra.Command) string {
+	path := ""
+	for {
+		path = fmt.Sprintf("%s/%s", cmd.Name(), path)
+		if cmd.Parent().Name() == "ethdo" {
+			return strings.TrimRight(path, "/")
+		}
+		cmd = cmd.Parent()
+	}
+}

cmd/slot/time/input.go

@@ -54,7 +54,7 @@ func input(ctx context.Context) (*dataIn, error) {
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	return data, nil

cmd/slot/time/input_internal_test.go

@@ -73,7 +73,7 @@ func TestInput(t *testing.T) {
 				"timeout": "5s",
 				"slot":    "1",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 	}
 

cmd/synccommittee/inclusion/command.go

@@ -0,0 +1,83 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"time"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/pkg/errors"
+	"github.com/spf13/viper"
+	"github.com/wealdtech/ethdo/services/chaintime"
+)
+
+type command struct {
+	quiet   bool
+	verbose bool
+	debug   bool
+
+	// Beacon node connection.
+	timeout                  time.Duration
+	connection               string
+	allowInsecureConnections bool
+
+	// Input.
+	account string
+	pubKey  string
+	index   string
+	epoch   int64
+
+	// Data access.
+	eth2Client eth2client.Service
+	chainTime  chaintime.Service
+
+	// Output.
+	inCommittee    bool
+	committeeIndex uint64
+	inclusions     []int
+}
+
+func newCommand(ctx context.Context) (*command, error) {
+	c := &command{
+		quiet:   viper.GetBool("quiet"),
+		verbose: viper.GetBool("verbose"),
+		debug:   viper.GetBool("debug"),
+	}
+
+	// Timeout.
+	if viper.GetDuration("timeout") == 0 {
+		return nil, errors.New("timeout is required")
+	}
+	c.timeout = viper.GetDuration("timeout")
+
+	if viper.GetString("connection") == "" {
+		return nil, errors.New("connection is required")
+	}
+	c.connection = viper.GetString("connection")
+	c.allowInsecureConnections = viper.GetBool("allow-insecure-connections")
+
+	// Validator.
+	c.account = viper.GetString("account")
+	c.pubKey = viper.GetString("pubkey")
+	c.index = viper.GetString("index")
+	if c.account == "" && c.pubKey == "" && c.index == "" {
+		return nil, errors.New("account, pubkey or index required")
+	}
+
+	// Epoch.
+	c.epoch = viper.GetInt64("epoch")
+
+	return c, nil
+}

cmd/synccommittee/inclusion/command_internal_test.go

@@ -0,0 +1,82 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInput(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "TimeoutMissing",
+			vars: map[string]interface{}{},
+			err:  "timeout is required",
+		},
+		{
+			name: "ConnectionMissing",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+			},
+			err: "connection is required",
+		},
+		{
+			name: "NoValidator",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+			err: "account, pubkey or index required",
+		},
+		{
+			name: "Good",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+				"index":      "1",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			_, err := newCommand(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/synccommittee/inclusion/output.go

@@ -0,0 +1,81 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"fmt"
+	"strings"
+)
+
+func (c *command) output(ctx context.Context) (string, error) {
+	if c.quiet {
+		return "", nil
+	}
+
+	builder := strings.Builder{}
+
+	if c.verbose {
+		builder.WriteString("Epoch: ")
+		builder.WriteString(fmt.Sprintf("%d\n", c.epoch))
+	}
+
+	if !c.inCommittee {
+		builder.WriteString("Validator not in sync committee")
+	} else {
+		if c.verbose {
+			builder.WriteString("Validator sync committee index ")
+			builder.WriteString(fmt.Sprintf("%d\n", c.committeeIndex))
+		}
+
+		noBlock := 0
+		included := 0
+		missed := 0
+		for _, inclusion := range c.inclusions {
+			switch inclusion {
+			case 0:
+				noBlock++
+			case 1:
+				included++
+			case 2:
+				missed++
+			}
+		}
+		builder.WriteString("Expected: ")
+		builder.WriteString(fmt.Sprintf("%d", len(c.inclusions)))
+		builder.WriteString("\nIncluded: ")
+		builder.WriteString(fmt.Sprintf("%d", included))
+		builder.WriteString("\nMissed: ")
+		builder.WriteString(fmt.Sprintf("%d", missed))
+		builder.WriteString("\nNo block: ")
+		builder.WriteString(fmt.Sprintf("%d", noBlock))
+
+		builder.WriteString("\nPer-slot result: ")
+		for i, inclusion := range c.inclusions {
+			switch inclusion {
+			case 0:
+				builder.WriteString("-")
+			case 1:
+				builder.WriteString("✓")
+			case 2:
+				builder.WriteString("✕")
+			}
+			if i%8 == 7 && i != len(c.inclusions)-1 {
+				builder.WriteString(" ")
+			}
+		}
+	}
+
+	return builder.String(), nil
+}

cmd/synccommittee/inclusion/process.go

@@ -0,0 +1,130 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"fmt"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec"
+	"github.com/attestantio/go-eth2-client/spec/altair"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	standardchaintime "github.com/wealdtech/ethdo/services/chaintime/standard"
+	"github.com/wealdtech/ethdo/util"
+)
+
+func (c *command) process(ctx context.Context) error {
+	// Obtain information we need to process.
+	if err := c.setup(ctx); err != nil {
+		return err
+	}
+
+	firstSlot, lastSlot := c.calculateSlots(ctx)
+
+	validatorIndex, err := util.ValidatorIndex(ctx, c.eth2Client, c.account, c.pubKey, c.index)
+	if err != nil {
+		return err
+	}
+
+	syncCommittee, err := c.eth2Client.(eth2client.SyncCommitteesProvider).SyncCommitteeAtEpoch(ctx, "head", phase0.Epoch(c.epoch))
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain sync committee information")
+	}
+
+	if syncCommittee == nil {
+		return errors.New("no sync committee returned")
+	}
+
+	for i := range syncCommittee.Validators {
+		if syncCommittee.Validators[i] == validatorIndex {
+			c.inCommittee = true
+			c.committeeIndex = uint64(i)
+			break
+		}
+	}
+
+	if c.inCommittee {
+		// This validator is in the sync committee.  Check blocks to see where it has been included.
+		c.inclusions = make([]int, 0)
+		if lastSlot > c.chainTime.CurrentSlot() {
+			lastSlot = c.chainTime.CurrentSlot()
+		}
+		for slot := firstSlot; slot < lastSlot; slot++ {
+			block, err := c.eth2Client.(eth2client.SignedBeaconBlockProvider).SignedBeaconBlock(ctx, fmt.Sprintf("%d", slot))
+			if err != nil {
+				return err
+			}
+			if block == nil {
+				c.inclusions = append(c.inclusions, 0)
+				continue
+			}
+			var aggregate *altair.SyncAggregate
+			switch block.Version {
+			case spec.DataVersionAltair:
+				aggregate = block.Altair.Message.Body.SyncAggregate
+				if aggregate.SyncCommitteeBits.BitAt(c.committeeIndex) {
+					c.inclusions = append(c.inclusions, 1)
+				} else {
+					c.inclusions = append(c.inclusions, 2)
+				}
+			case spec.DataVersionBellatrix:
+				aggregate = block.Bellatrix.Message.Body.SyncAggregate
+				if aggregate.SyncCommitteeBits.BitAt(c.committeeIndex) {
+					c.inclusions = append(c.inclusions, 1)
+				} else {
+					c.inclusions = append(c.inclusions, 2)
+				}
+			default:
+				return fmt.Errorf("unhandled block version %v", block.Version)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (c *command) setup(ctx context.Context) error {
+	var err error
+
+	// Connect to the client.
+	c.eth2Client, err = util.ConnectToBeaconNode(ctx, c.connection, c.timeout, c.allowInsecureConnections)
+	if err != nil {
+		return err
+	}
+
+	c.chainTime, err = standardchaintime.New(ctx,
+		standardchaintime.WithSpecProvider(c.eth2Client.(eth2client.SpecProvider)),
+		standardchaintime.WithForkScheduleProvider(c.eth2Client.(eth2client.ForkScheduleProvider)),
+		standardchaintime.WithGenesisTimeProvider(c.eth2Client.(eth2client.GenesisTimeProvider)),
+	)
+	if err != nil {
+		return errors.Wrap(err, "failed to set up chaintime service")
+	}
+
+	return nil
+}
+
+func (c *command) calculateSlots(ctx context.Context) (phase0.Slot, phase0.Slot) {
+	var firstSlot phase0.Slot
+	var lastSlot phase0.Slot
+	if c.epoch == -1 {
+		c.epoch = int64(c.chainTime.CurrentEpoch()) - 1
+	}
+	firstSlot = c.chainTime.FirstSlotOfEpoch(phase0.Epoch(c.epoch))
+	lastSlot = c.chainTime.FirstSlotOfEpoch(phase0.Epoch(c.epoch) + 1)
+
+	return firstSlot, lastSlot
+}

cmd/synccommittee/inclusion/process_internal_test.go

@@ -0,0 +1,72 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestProcess(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "InvalidConnection",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"index":      "1",
+				"connection": "invalid",
+			},
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
+		},
+		{
+			name: "Good",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"index":      "1",
+				"epoch":      "-1",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			cmd, err := newCommand(context.Background())
+			require.NoError(t, err)
+			err = cmd.process(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/synccommittee/inclusion/run.go

@@ -0,0 +1,50 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package inclusion
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+// Run runs the command.
+func Run(cmd *cobra.Command) (string, error) {
+	ctx := context.Background()
+
+	c, err := newCommand(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to set up command")
+	}
+
+	// Further errors do not need a usage report.
+	cmd.SilenceUsage = true
+
+	if err := c.process(ctx); err != nil {
+		return "", errors.Wrap(err, "failed to process")
+	}
+
+	if viper.GetBool("quiet") {
+		return "", nil
+	}
+
+	results, err := c.output(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain output")
+	}
+
+	return results, nil
+}

cmd/synccommittee/members/input.go

@@ -18,7 +18,6 @@ import (
 	"time"
 
 	eth2client "github.com/attestantio/go-eth2-client"
-	spec "github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 	"github.com/spf13/viper"
 	"github.com/wealdtech/ethdo/services/chaintime"
@@ -35,7 +34,8 @@ type dataIn struct {
 	// Operation.
 	eth2Client eth2client.Service
 	chainTime  chaintime.Service
-	epoch      spec.Epoch
+	epoch      int64
+	period     string
 }
 
 func input(ctx context.Context) (*dataIn, error) {
@@ -53,7 +53,7 @@ func input(ctx context.Context) (*dataIn, error) {
 	var err error
 	data.eth2Client, err = util.ConnectToBeaconNode(ctx, viper.GetString("connection"), viper.GetDuration("timeout"), viper.GetBool("allow-insecure-connections"))
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to connect to Ethereum 2 beacon node")
+		return nil, err
 	}
 
 	// Chain time.
@@ -67,12 +67,8 @@ func input(ctx context.Context) (*dataIn, error) {
 	}
 
 	// Epoch
-	epoch := viper.GetInt64("epoch")
-	if epoch == -1 {
-		data.epoch = data.chainTime.CurrentEpoch()
-	} else {
-		data.epoch = spec.Epoch(epoch)
-	}
+	data.epoch = viper.GetInt64("epoch")
+	data.period = viper.GetString("period")
 
 	return data, nil
 }

cmd/synccommittee/members/input_internal_test.go

@@ -65,7 +65,7 @@ func TestInput(t *testing.T) {
 			vars: map[string]interface{}{
 				"timeout": "5s",
 			},
-			err: "failed to connect to Ethereum 2 beacon node: failed to connect to beacon node: problem with parameters: no address specified",
+			err: "failed to connect to beacon node: failed to connect to Ethereum 2 client with any known method",
 		},
 	}
 

cmd/synccommittee/members/process.go

@@ -16,8 +16,10 @@ package members
 import (
 	"context"
 	"fmt"
+	"strings"
 
 	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 )
 
@@ -26,11 +28,12 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 		return nil, errors.New("no data")
 	}
 
-	if data.epoch < data.chainTime.AltairInitialEpoch() {
-		return nil, errors.New("not an Altair epoch")
+	epoch, err := calculateEpoch(ctx, data)
+	if err != nil {
+		return nil, err
 	}
 
-	syncCommittee, err := data.eth2Client.(eth2client.SyncCommitteesProvider).SyncCommittee(ctx, fmt.Sprintf("%d", data.chainTime.FirstSlotOfEpoch(data.epoch)))
+	syncCommittee, err := data.eth2Client.(eth2client.SyncCommitteesProvider).SyncCommitteeAtEpoch(ctx, "head", epoch)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to obtain sync committee information")
 	}
@@ -48,3 +51,27 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 
 	return results, nil
 }
+
+func calculateEpoch(ctx context.Context, data *dataIn) (phase0.Epoch, error) {
+	var epoch phase0.Epoch
+	if data.epoch != -1 {
+		epoch = phase0.Epoch(data.epoch)
+	} else {
+		switch strings.ToLower(data.period) {
+		case "", "current":
+			epoch = data.chainTime.CurrentEpoch()
+		case "next":
+			period := data.chainTime.SlotToSyncCommitteePeriod(data.chainTime.CurrentSlot())
+			nextPeriod := period + 1
+			epoch = data.chainTime.FirstEpochOfSyncPeriod(nextPeriod)
+		default:
+			return 0, fmt.Errorf("period %s not known", data.period)
+		}
+	}
+
+	if data.debug {
+		fmt.Printf("epoch is %d\n", epoch)
+	}
+
+	return epoch, nil
+}

cmd/synccommittee/members/process_internal_test.go

@@ -56,7 +56,7 @@ func TestProcess(t *testing.T) {
 			dataIn: &dataIn{
 				eth2Client: eth2Client,
 				chainTime:  chainTime,
-				epoch:      61650,
+				epoch:      -1,
 			},
 		},
 	}

cmd/synccommitteeinclusion.go

@@ -0,0 +1,67 @@
+// Copyright © 2022 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	synccommitteeinclusion "github.com/wealdtech/ethdo/cmd/synccommittee/inclusion"
+)
+
+var synccommitteeInclusionCmd = &cobra.Command{
+	Use:   "inclusion",
+	Short: "Obtain sync committee inclusion data for a validator",
+	Long: `Obtain sync committee inclusion data for a validator.  For example:
+
+    ethdo synccommittee inclusion --epoch=12345 --index=11111
+
+In quiet mode this will return 0 if the validator was in the sync committee, otherwise 1.
+
+epoch can be a specific epoch; If not supplied all slots for the current sync committee period will be provided`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		res, err := synccommitteeinclusion.Run(cmd)
+		if err != nil {
+			return err
+		}
+		if viper.GetBool("quiet") {
+			return nil
+		}
+		if res != "" {
+			fmt.Println(res)
+		}
+		return nil
+	},
+}
+
+func init() {
+	synccommitteeCmd.AddCommand(synccommitteeInclusionCmd)
+	synccommitteeFlags(synccommitteeInclusionCmd)
+	synccommitteeInclusionCmd.Flags().Int64("epoch", -1, "the epoch for which to fetch sync committee inclusion")
+	synccommitteeInclusionCmd.Flags().String("pubkey", "", "validator public key for sync committee")
+	synccommitteeInclusionCmd.Flags().String("index", "", "validator index for sync committee")
+}
+
+func synccommitteeInclusionBindings() {
+	if err := viper.BindPFlag("epoch", synccommitteeInclusionCmd.Flags().Lookup("epoch")); err != nil {
+		panic(err)
+	}
+	if err := viper.BindPFlag("pubkey", synccommitteeInclusionCmd.Flags().Lookup("pubkey")); err != nil {
+		panic(err)
+	}
+	if err := viper.BindPFlag("index", synccommitteeInclusionCmd.Flags().Lookup("index")); err != nil {
+		panic(err)
+	}
+}

cmd/synccommitteemembers.go

@@ -28,7 +28,9 @@ var synccommitteeMembersCmd = &cobra.Command{
 
     ethdo synccommittee members --epoch=12345
 
-In quiet mode this will return 0 if the synccommittee members are found, otherwise 1.`,
+In quiet mode this will return 0 if the synccommittee members are found, otherwise 1.
+
+epoch can be a specific epoch.  period can be 'current' for the current sync period or 'next' for the next sync period`,
 	RunE: func(cmd *cobra.Command, args []string) error {
 		res, err := synccommitteemembers.Run(cmd)
 		if err != nil {
@@ -48,10 +50,14 @@ func init() {
 	synccommitteeCmd.AddCommand(synccommitteeMembersCmd)
 	synccommitteeFlags(synccommitteeMembersCmd)
 	synccommitteeMembersCmd.Flags().Int64("epoch", -1, "the epoch for which to fetch sync committees")
+	synccommitteeMembersCmd.Flags().String("period", "", "the sync committee period for which to fetch sync committees ('current', 'next')")
 }
 
 func synccommitteeMembersBindings() {
 	if err := viper.BindPFlag("epoch", synccommitteeMembersCmd.Flags().Lookup("epoch")); err != nil {
 		panic(err)
 	}
+	if err := viper.BindPFlag("period", synccommitteeMembersCmd.Flags().Lookup("period")); err != nil {
+		panic(err)
+	}
 }

cmd/validator/depositdata/output.go

@@ -109,6 +109,7 @@ func validatorDepositDataOutputLaunchpad(datum *dataOut) (string, error) {
 	forkVersionMap := map[spec.Version]string{
 		[4]byte{0x00, 0x00, 0x00, 0x00}: "mainnet",
 		[4]byte{0x00, 0x00, 0x20, 0x09}: "pyrmont",
+		[4]byte{0x00, 0x00, 0x10, 0x20}: "prater",
 	}
 
 	if datum.validatorPubKey == nil {

cmd/validator/depositdata/output_internal_test.go

@@ -253,10 +253,15 @@ func TestOutputLaunchpad(t *testing.T) {
 		tmp := testutil.HexToSignature("0xb7a757a4c506ac6ac5f2d23e065de7d00dc9f5a6a3f9610a8b60b65f166379139ae382c91ecbbf5c9fabc34b1cd2cf8f0211488d50d8754716d8e72e17c1a00b5d9b37cc73767946790ebe66cf9669abfc5c25c67e1e2d1c2e11429d149c25a2")
 		signature = &tmp
 	}
-	var forkVersion *spec.Version
+	var forkVersionPyrmont *spec.Version
 	{
 		tmp := testutil.HexToVersion("0x00002009")
-		forkVersion = &tmp
+		forkVersionPyrmont = &tmp
+	}
+	var forkVersionPrater *spec.Version
+	{
+		tmp := testutil.HexToVersion("0x00001020")
+		forkVersionPrater = &tmp
 	}
 	var depositDataRoot *spec.Root
 	{
@@ -316,7 +321,7 @@ func TestOutputLaunchpad(t *testing.T) {
 					withdrawalCredentials: testutil.HexToBytes("0x00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b"),
 					amount:                32000000000,
 					signature:             signature,
-					forkVersion:           forkVersion,
+					forkVersion:           forkVersionPyrmont,
 					depositDataRoot:       depositDataRoot,
 					depositMessageRoot:    depositMessageRoot,
 				},
@@ -332,7 +337,7 @@ func TestOutputLaunchpad(t *testing.T) {
 					validatorPubKey:    validatorPubKey,
 					amount:             32000000000,
 					signature:          signature,
-					forkVersion:        forkVersion,
+					forkVersion:        forkVersionPyrmont,
 					depositDataRoot:    depositDataRoot,
 					depositMessageRoot: depositMessageRoot,
 				},
@@ -348,7 +353,7 @@ func TestOutputLaunchpad(t *testing.T) {
 					validatorPubKey:       validatorPubKey,
 					withdrawalCredentials: testutil.HexToBytes("0x00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b"),
 					amount:                32000000000,
-					forkVersion:           forkVersion,
+					forkVersion:           forkVersionPyrmont,
 					depositDataRoot:       depositDataRoot,
 					depositMessageRoot:    depositMessageRoot,
 				},
@@ -364,7 +369,7 @@ func TestOutputLaunchpad(t *testing.T) {
 					validatorPubKey:       validatorPubKey,
 					withdrawalCredentials: testutil.HexToBytes("0x00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b"),
 					signature:             signature,
-					forkVersion:           forkVersion,
+					forkVersion:           forkVersionPyrmont,
 					depositDataRoot:       depositDataRoot,
 					depositMessageRoot:    depositMessageRoot,
 				},
@@ -381,7 +386,7 @@ func TestOutputLaunchpad(t *testing.T) {
 					withdrawalCredentials: testutil.HexToBytes("0x00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b"),
 					amount:                32000000000,
 					signature:             signature,
-					forkVersion:           forkVersion,
+					forkVersion:           forkVersionPyrmont,
 					depositMessageRoot:    depositMessageRoot,
 				},
 			},
@@ -397,14 +402,14 @@ func TestOutputLaunchpad(t *testing.T) {
 					withdrawalCredentials: testutil.HexToBytes("0x00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b"),
 					amount:                32000000000,
 					signature:             signature,
-					forkVersion:           forkVersion,
+					forkVersion:           forkVersionPyrmont,
 					depositDataRoot:       depositDataRoot,
 				},
 			},
 			err: "deposit message root required",
 		},
 		{
-			name: "Single",
+			name: "SinglePyrmont",
 			dataOut: []*dataOut{
 				{
 					format:                "launchpad",
@@ -413,13 +418,30 @@ func TestOutputLaunchpad(t *testing.T) {
 					withdrawalCredentials: testutil.HexToBytes("0x00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b"),
 					amount:                32000000000,
 					signature:             signature,
-					forkVersion:           forkVersion,
+					forkVersion:           forkVersionPyrmont,
 					depositDataRoot:       depositDataRoot,
 					depositMessageRoot:    depositMessageRoot,
 				},
 			},
 			res: `[{"pubkey":"a99a76ed7796f7be22d5b7e85deeb7c5677e88e511e0b337618f8c4eb61349b4bf2d153f649f7b53359fe8b94a38e44c","withdrawal_credentials":"00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b","amount":32000000000,"signature":"b7a757a4c506ac6ac5f2d23e065de7d00dc9f5a6a3f9610a8b60b65f166379139ae382c91ecbbf5c9fabc34b1cd2cf8f0211488d50d8754716d8e72e17c1a00b5d9b37cc73767946790ebe66cf9669abfc5c25c67e1e2d1c2e11429d149c25a2","deposit_message_root":"139b510ea7f2788ab82da1f427d6cbe1db147c15a053db738ad5500cd83754a6","deposit_data_root":"9e51b386f4271c18149dd0f73297a26a4a8c15c3622c44af79c92446f44a3554","fork_version":"00002009","eth2_network_name":"pyrmont","deposit_cli_version":"1.1.0"}]`,
 		},
+		{
+			name: "SinglePrater",
+			dataOut: []*dataOut{
+				{
+					format:                "launchpad",
+					account:               "interop/00000",
+					validatorPubKey:       validatorPubKey,
+					withdrawalCredentials: testutil.HexToBytes("0x00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b"),
+					amount:                32000000000,
+					signature:             signature,
+					forkVersion:           forkVersionPrater,
+					depositDataRoot:       depositDataRoot,
+					depositMessageRoot:    depositMessageRoot,
+				},
+			},
+			res: `[{"pubkey":"a99a76ed7796f7be22d5b7e85deeb7c5677e88e511e0b337618f8c4eb61349b4bf2d153f649f7b53359fe8b94a38e44c","withdrawal_credentials":"00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b","amount":32000000000,"signature":"b7a757a4c506ac6ac5f2d23e065de7d00dc9f5a6a3f9610a8b60b65f166379139ae382c91ecbbf5c9fabc34b1cd2cf8f0211488d50d8754716d8e72e17c1a00b5d9b37cc73767946790ebe66cf9669abfc5c25c67e1e2d1c2e11429d149c25a2","deposit_message_root":"139b510ea7f2788ab82da1f427d6cbe1db147c15a053db738ad5500cd83754a6","deposit_data_root":"9e51b386f4271c18149dd0f73297a26a4a8c15c3622c44af79c92446f44a3554","fork_version":"00001020","eth2_network_name":"prater","deposit_cli_version":"1.1.0"}]`,
+		},
 		{
 			name: "Double",
 			dataOut: []*dataOut{
@@ -430,7 +452,7 @@ func TestOutputLaunchpad(t *testing.T) {
 					withdrawalCredentials: testutil.HexToBytes("0x00fad2a6bfb0e7f1f0f45460944fbd8dfa7f37da06a4d13b3983cc90bb46963b"),
 					amount:                32000000000,
 					signature:             signature,
-					forkVersion:           forkVersion,
+					forkVersion:           forkVersionPyrmont,
 					depositDataRoot:       depositDataRoot,
 					depositMessageRoot:    depositMessageRoot,
 				},
@@ -441,7 +463,7 @@ func TestOutputLaunchpad(t *testing.T) {
 					withdrawalCredentials: testutil.HexToBytes("0x00ec7ef7780c9d151597924036262dd28dc60e1228f4da6fecf9d402cb3f3594"),
 					amount:                32000000000,
 					signature:             signature2,
-					forkVersion:           forkVersion,
+					forkVersion:           forkVersionPyrmont,
 					depositDataRoot:       depositDataRoot2,
 					depositMessageRoot:    depositMessageRoot2,
 				},

cmd/validator/duties/process.go

@@ -1,4 +1,4 @@
-// Copyright © 2019, 2020 Weald Technology Trading
+// Copyright © 2019 - 2022 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -15,10 +15,6 @@ package validatorduties
 
 import (
 	"context"
-	"encoding/hex"
-	"fmt"
-	"strconv"
-	"strings"
 	"time"
 
 	eth2client "github.com/attestantio/go-eth2-client"
@@ -26,7 +22,6 @@ import (
 	spec "github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/pkg/errors"
 	"github.com/wealdtech/ethdo/util"
-	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
 )
 
 func process(ctx context.Context, data *dataIn) (*dataOut, error) {
@@ -46,7 +41,7 @@ func process(ctx context.Context, data *dataIn) (*dataOut, error) {
 		verbose: data.verbose,
 	}
 
-	validatorIndex, err := validatorIndex(ctx, eth2Client, data)
+	validatorIndex, err := util.ValidatorIndex(ctx, eth2Client, data.account, data.pubKey, data.index)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to obtain validator index")
 	}
@@ -132,54 +127,3 @@ func currentEpoch(ctx context.Context, eth2Client eth2client.Service) (spec.Epoc
 	}
 	return spec.Epoch(uint64(time.Since(genesis.GenesisTime).Seconds()) / (uint64(slotDuration.Seconds()) * slotsPerEpoch)), nil
 }
-
-// validatorIndex obtains the index of a validator
-func validatorIndex(ctx context.Context, eth2Client eth2client.Service, data *dataIn) (spec.ValidatorIndex, error) {
-	switch {
-	case data.account != "":
-		ctx, cancel := context.WithTimeout(context.Background(), data.timeout)
-		defer cancel()
-		_, account, err := util.WalletAndAccountFromPath(ctx, data.account)
-		if err != nil {
-			return 0, errors.Wrap(err, "failed to obtain account")
-		}
-		return accountToIndex(ctx, account, eth2Client)
-	case data.pubKey != "":
-		pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(data.pubKey, "0x"))
-		if err != nil {
-			return 0, errors.Wrap(err, fmt.Sprintf("failed to decode public key %s", data.pubKey))
-		}
-		account, err := util.NewScratchAccount(nil, pubKeyBytes)
-		if err != nil {
-			return 0, errors.Wrap(err, fmt.Sprintf("invalid public key %s", data.pubKey))
-		}
-		return accountToIndex(ctx, account, eth2Client)
-	case data.index != "":
-		val, err := strconv.ParseUint(data.index, 10, 64)
-		if err != nil {
-			return 0, err
-		}
-		return spec.ValidatorIndex(val), nil
-	default:
-		return 0, errors.New("no validator")
-	}
-}
-
-func accountToIndex(ctx context.Context, account e2wtypes.Account, eth2Client eth2client.Service) (spec.ValidatorIndex, error) {
-	pubKey, err := util.BestPublicKey(account)
-	if err != nil {
-		return 0, err
-	}
-
-	pubKeys := make([]spec.BLSPubKey, 1)
-	copy(pubKeys[0][:], pubKey.Marshal())
-	validators, err := eth2Client.(eth2client.ValidatorsProvider).ValidatorsByPubKey(ctx, "head", pubKeys)
-	if err != nil {
-		return 0, err
-	}
-
-	for index := range validators {
-		return index, nil
-	}
-	return 0, errors.New("validator not found")
-}

cmd/validator/expectation/command.go

@@ -0,0 +1,73 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validatorexpectation
+
+import (
+	"context"
+	"time"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/pkg/errors"
+	"github.com/spf13/viper"
+)
+
+type command struct {
+	quiet   bool
+	verbose bool
+	debug   bool
+
+	// Beacon node connection.
+	timeout                  time.Duration
+	connection               string
+	allowInsecureConnections bool
+
+	// Input.
+	validators int64
+
+	// Data access.
+	eth2Client         eth2client.Service
+	validatorsProvider eth2client.ValidatorsProvider
+	activeValidators   int
+
+	// Output.
+	timeBetweenProposals      time.Duration
+	timeBetweenSyncCommittees time.Duration
+}
+
+func newCommand(ctx context.Context) (*command, error) {
+	c := &command{
+		quiet:   viper.GetBool("quiet"),
+		verbose: viper.GetBool("verbose"),
+		debug:   viper.GetBool("debug"),
+	}
+
+	// Timeout.
+	if viper.GetDuration("timeout") == 0 {
+		return nil, errors.New("timeout is required")
+	}
+	c.timeout = viper.GetDuration("timeout")
+
+	if viper.GetString("connection") == "" {
+		return nil, errors.New("connection is required")
+	}
+	c.connection = viper.GetString("connection")
+	c.allowInsecureConnections = viper.GetBool("allow-insecure-connections")
+
+	c.validators = viper.GetInt64("validators")
+	if c.validators < 1 {
+		return nil, errors.New("validators must be at least 1")
+	}
+
+	return c, nil
+}

cmd/validator/expectation/command_internal_test.go

@@ -0,0 +1,82 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validatorexpectation
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInput(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "TimeoutMissing",
+			vars: map[string]interface{}{},
+			err:  "timeout is required",
+		},
+		{
+			name: "ConnectionMissing",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+			},
+			err: "connection is required",
+		},
+		{
+			name: "ValidatorsZero",
+			vars: map[string]interface{}{
+				"timeout":    "5s",
+				"validators": "0",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+			err: "validators must be at least 1",
+		},
+		{
+			name: "Good",
+			vars: map[string]interface{}{
+				"validators": "1",
+				"timeout":    "5s",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			_, err := newCommand(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/validator/expectation/output.go

@@ -0,0 +1,39 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validatorexpectation
+
+import (
+	"context"
+	"strings"
+
+	"github.com/hako/durafmt"
+)
+
+func (c *command) output(ctx context.Context) (string, error) {
+	if c.quiet {
+		return "", nil
+	}
+
+	builder := strings.Builder{}
+
+	builder.WriteString("Expected time between block proposals: ")
+	builder.WriteString(durafmt.Parse(c.timeBetweenProposals).LimitFirstN(2).String())
+	builder.WriteString("\n")
+
+	builder.WriteString("Expected time between sync committees: ")
+	builder.WriteString(durafmt.Parse(c.timeBetweenSyncCommittees).LimitFirstN(2).String())
+	builder.WriteString("\n")
+
+	return builder.String(), nil
+}

cmd/validator/expectation/process.go

@@ -0,0 +1,161 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validatorexpectation
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	eth2client "github.com/attestantio/go-eth2-client"
+	"github.com/pkg/errors"
+	standardchaintime "github.com/wealdtech/ethdo/services/chaintime/standard"
+	"github.com/wealdtech/ethdo/util"
+)
+
+func (c *command) process(ctx context.Context) error {
+	// Obtain information we need to process.
+	if err := c.setup(ctx); err != nil {
+		return err
+	}
+
+	if c.debug {
+		fmt.Printf("Active validators: %d\n", c.activeValidators)
+	}
+
+	if err := c.calculateProposalChance(ctx); err != nil {
+		return err
+	}
+
+	return c.calculateSyncCommitteeChance(ctx)
+}
+
+func (c *command) calculateProposalChance(ctx context.Context) error {
+	// Chance of proposing a block is 1/activeValidators.
+	// Expectation of number of slots before proposing a block is 1/p, == activeValidators slots.
+
+	spec, err := c.eth2Client.(eth2client.SpecProvider).Spec(ctx)
+	if err != nil {
+		return err
+	}
+
+	tmp, exists := spec["SECONDS_PER_SLOT"]
+	if !exists {
+		return errors.New("spec missing SECONDS_PER_SLOT")
+	}
+	slotDuration, isType := tmp.(time.Duration)
+	if !isType {
+		return errors.New("SECONDS_PER_SLOT of incorrect type")
+	}
+
+	c.timeBetweenProposals = slotDuration * time.Duration(c.activeValidators) / time.Duration(c.validators)
+
+	return nil
+}
+
+func (c *command) calculateSyncCommitteeChance(ctx context.Context) error {
+	// Chance of being in a sync committee is SYNC_COMMITTEE_SIZE/activeValidators.
+	// Expectation of number of periods before being in a sync committee is 1/p, activeValidators/SYNC_COMMITTEE_SIZE periods.
+
+	spec, err := c.eth2Client.(eth2client.SpecProvider).Spec(ctx)
+	if err != nil {
+		return err
+	}
+
+	tmp, exists := spec["SECONDS_PER_SLOT"]
+	if !exists {
+		return errors.New("spec missing SECONDS_PER_SLOT")
+	}
+	slotDuration, isType := tmp.(time.Duration)
+	if !isType {
+		return errors.New("SECONDS_PER_SLOT of incorrect type")
+	}
+
+	tmp, exists = spec["SYNC_COMMITTEE_SIZE"]
+	if !exists {
+		return errors.New("spec missing SYNC_COMMITTEE_SIZE")
+	}
+	syncCommitteeSize, isType := tmp.(uint64)
+	if !isType {
+		return errors.New("SYNC_COMMITTEE_SIZE of incorrect type")
+	}
+
+	tmp, exists = spec["SLOTS_PER_EPOCH"]
+	if !exists {
+		return errors.New("spec missing SLOTS_PER_EPOCH")
+	}
+	slotsPerEpoch, isType := tmp.(uint64)
+	if !isType {
+		return errors.New("SLOTS_PER_EPOCH of incorrect type")
+	}
+
+	tmp, exists = spec["EPOCHS_PER_SYNC_COMMITTEE_PERIOD"]
+	if !exists {
+		return errors.New("spec missing EPOCHS_PER_SYNC_COMMITTEE_PERIOD")
+	}
+	epochsPerPeriod, isType := tmp.(uint64)
+	if !isType {
+		return errors.New("EPOCHS_PER_SYNC_COMMITTEE_PERIOD of incorrect type")
+	}
+
+	periodsBetweenSyncCommittees := uint64(c.activeValidators) / syncCommitteeSize
+	if c.debug {
+		fmt.Printf("Sync committee periods between inclusion: %d\n", periodsBetweenSyncCommittees)
+	}
+
+	c.timeBetweenSyncCommittees = slotDuration * time.Duration(slotsPerEpoch*epochsPerPeriod) * time.Duration(periodsBetweenSyncCommittees) / time.Duration(c.validators)
+
+	return nil
+}
+
+func (c *command) setup(ctx context.Context) error {
+	var err error
+
+	// Connect to the client.
+	c.eth2Client, err = util.ConnectToBeaconNode(ctx, c.connection, c.timeout, c.allowInsecureConnections)
+	if err != nil {
+		return errors.Wrap(err, "failed to connect to beacon node")
+	}
+
+	chainTime, err := standardchaintime.New(ctx,
+		standardchaintime.WithSpecProvider(c.eth2Client.(eth2client.SpecProvider)),
+		standardchaintime.WithForkScheduleProvider(c.eth2Client.(eth2client.ForkScheduleProvider)),
+		standardchaintime.WithGenesisTimeProvider(c.eth2Client.(eth2client.GenesisTimeProvider)),
+	)
+	if err != nil {
+		return errors.Wrap(err, "failed to set up chaintime service")
+	}
+
+	// Obtain the number of active validators.
+	var isProvider bool
+	c.validatorsProvider, isProvider = c.eth2Client.(eth2client.ValidatorsProvider)
+	if !isProvider {
+		return errors.New("connection does not provide validator information")
+	}
+
+	validators, err := c.validatorsProvider.Validators(ctx, "head", nil)
+	if err != nil {
+		return errors.Wrap(err, "failed to obtain validators")
+	}
+
+	currentEpoch := chainTime.CurrentEpoch()
+	for _, validator := range validators {
+		if validator.Validator.ActivationEpoch <= currentEpoch &&
+			validator.Validator.ExitEpoch > currentEpoch {
+			c.activeValidators++
+		}
+	}
+
+	return nil
+}

cmd/validator/expectation/process_internal_test.go

@@ -0,0 +1,63 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validatorexpectation
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestProcess(t *testing.T) {
+	if os.Getenv("ETHDO_TEST_CONNECTION") == "" {
+		t.Skip("ETHDO_TEST_CONNECTION not configured; cannot run tests")
+	}
+
+	tests := []struct {
+		name string
+		vars map[string]interface{}
+		err  string
+	}{
+		{
+			name: "InvalidData",
+			vars: map[string]interface{}{
+				"timeout":    "60s",
+				"validators": "1",
+				"data":       "[[",
+				"connection": os.Getenv("ETHDO_TEST_CONNECTION"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			viper.Reset()
+
+			for k, v := range test.vars {
+				viper.Set(k, v)
+			}
+			cmd, err := newCommand(context.Background())
+			require.NoError(t, err)
+			err = cmd.process(context.Background())
+			if test.err != "" {
+				require.EqualError(t, err, test.err)
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}

cmd/validator/expectation/run.go

@@ -0,0 +1,50 @@
+// Copyright © 2021 Weald Technology Trading.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validatorexpectation
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+// Run runs the command.
+func Run(cmd *cobra.Command) (string, error) {
+	ctx := context.Background()
+
+	c, err := newCommand(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to set up command")
+	}
+
+	// Further errors do not need a usage report.
+	cmd.SilenceUsage = true
+
+	if err := c.process(ctx); err != nil {
+		return "", errors.Wrap(err, "failed to process")
+	}
+
+	if viper.GetBool("quiet") {
+		return "", nil
+	}
+
+	results, err := c.output(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain output")
+	}
+
+	return results, nil
+}

cmd/validatorexpectation.go

@@ -0,0 +1,55 @@
+// Copyright © 2021 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	validatorexpectation "github.com/wealdtech/ethdo/cmd/validator/expectation"
+)
+
+var validatorExpectationCmd = &cobra.Command{
+	Use:   "expectation",
+	Short: "Calculate expectation for individual validators",
+	Long: `Calculate expectation for individual validators.  For example:
+
+    ethdo validator expectation`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		res, err := validatorexpectation.Run(cmd)
+		if err != nil {
+			return err
+		}
+		if viper.GetBool("quiet") {
+			return nil
+		}
+		res = strings.TrimRight(res, "\n")
+		fmt.Println(res)
+		return nil
+	},
+}
+
+func init() {
+	validatorCmd.AddCommand(validatorExpectationCmd)
+	validatorFlags(validatorExpectationCmd)
+	validatorExpectationCmd.Flags().Int64("validators", 1, "Number of validators")
+}
+
+func validatorExpectationBindings() {
+	if err := viper.BindPFlag("validators", validatorExpectationCmd.Flags().Lookup("validators")); err != nil {
+		panic(err)
+	}
+}

cmd/validatorinfo.go

@@ -1,4 +1,4 @@
-// Copyright © 2020 Weald Technology Trading
+// Copyright © 2020, 2021 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -54,7 +54,7 @@ In quiet mode this will return 0 if the validator information can be obtained, o
 		)
 		errCheck(err, "Failed to connect to Ethereum 2 beacon node")
 
-		account, err := validatorInfoAccount()
+		account, err := validatorInfoAccount(ctx, eth2Client)
 		errCheck(err, "Failed to obtain validator account")
 
 		pubKeys := make([]spec.BLSPubKey, 1)
@@ -99,6 +99,12 @@ In quiet mode this will return 0 if the validator information can be obtained, o
 			fmt.Printf("Public key: %#x\n", validator.Validator.PublicKey)
 		}
 		fmt.Printf("Status: %v\n", validator.Status)
+		switch validator.Status {
+		case api.ValidatorStateActiveExiting, api.ValidatorStateActiveSlashed:
+			fmt.Printf("Exit epoch: %d\n", validator.Validator.ExitEpoch)
+		case api.ValidatorStateExitedUnslashed, api.ValidatorStateExitedSlashed:
+			fmt.Printf("Withdrawable epoch: %d\n", validator.Validator.WithdrawableEpoch)
+		}
 		fmt.Printf("Balance: %s\n", string2eth.GWeiToString(uint64(validator.Balance), true))
 		if validator.Status.IsActive() {
 			fmt.Printf("Effective balance: %s\n", string2eth.GWeiToString(uint64(validator.Validator.EffectiveBalance), true))
@@ -107,31 +113,12 @@ In quiet mode this will return 0 if the validator information can be obtained, o
 			fmt.Printf("Withdrawal credentials: %#x\n", validator.Validator.WithdrawalCredentials)
 		}
 
-		//		transition := time.Unix(int64(validatorInfo.TransitionTimestamp), 0)
-		//		transitionPassed := int64(validatorInfo.TransitionTimestamp) <= time.Now().Unix()
-		//		switch validatorInfo.Status {
-		//		case ethpb.ValidatorStatus_DEPOSITED:
-		//			if validatorInfo.TransitionTimestamp != 0 {
-		//				fmt.Printf("Inclusion in chain: %s\n", transition)
-		//			}
-		//		case ethpb.ValidatorStatus_PENDING:
-		//			fmt.Printf("Activation: %s\n", transition)
-		//		case ethpb.ValidatorStatus_EXITING, ethpb.ValidatorStatus_SLASHING:
-		//			fmt.Printf("Attesting finishes: %s\n", transition)
-		//		case ethpb.ValidatorStatus_EXITED:
-		//			if transitionPassed {
-		//				fmt.Printf("Funds withdrawable: Now\n")
-		//			} else {
-		//				fmt.Printf("Funds withdrawable: %s\n", transition)
-		//			}
-		//		}
-
 		os.Exit(_exitSuccess)
 	},
 }
 
 // validatorInfoAccount obtains the account for the validator info command.
-func validatorInfoAccount() (e2wtypes.Account, error) {
+func validatorInfoAccount(ctx context.Context, eth2Client eth2client.Service) (e2wtypes.Account, error) {
 	var account e2wtypes.Account
 	var err error
 	switch {
@@ -151,6 +138,27 @@ func validatorInfoAccount() (e2wtypes.Account, error) {
 		if err != nil {
 			return nil, errors.Wrap(err, fmt.Sprintf("invalid public key %s", viper.GetString("pubkey")))
 		}
+	case viper.GetInt64("index") != -1:
+		validatorsProvider, isValidatorsProvider := eth2Client.(eth2client.ValidatorsProvider)
+		if !isValidatorsProvider {
+			return nil, errors.New("client does not provide validator information")
+		}
+		index := spec.ValidatorIndex(viper.GetInt64("index"))
+		validators, err := validatorsProvider.Validators(ctx, "head", []spec.ValidatorIndex{
+			index,
+		})
+		if err != nil {
+			return nil, errors.Wrap(err, "failed to obtain validator information.")
+		}
+		if len(validators) == 0 {
+			return nil, errors.New("unknown validator index")
+		}
+		pubKeyBytes := make([]byte, 48)
+		copy(pubKeyBytes, validators[index].Validator.PublicKey[:])
+		account, err = util.NewScratchAccount(nil, pubKeyBytes)
+		if err != nil {
+			return nil, errors.Wrap(err, fmt.Sprintf("invalid public key %s", viper.GetString("pubkey")))
+		}
 	default:
 		return nil, errors.New("neither account nor public key supplied")
 	}
@@ -212,6 +220,7 @@ func graphData(network string, validatorPubKey []byte) (uint64, spec.Gwei, error
 func init() {
 	validatorCmd.AddCommand(validatorInfoCmd)
 	validatorInfoCmd.Flags().String("pubkey", "", "Public key for which to obtain status")
+	validatorInfoCmd.Flags().Int64("index", -1, "Index for which to obtain status")
 	validatorFlags(validatorInfoCmd)
 }
 
@@ -219,4 +228,7 @@ func validatorInfoBindings() {
 	if err := viper.BindPFlag("pubkey", validatorInfoCmd.Flags().Lookup("pubkey")); err != nil {
 		panic(err)
 	}
+	if err := viper.BindPFlag("index", validatorInfoCmd.Flags().Lookup("index")); err != nil {
+		panic(err)
+	}
 }

cmd/version.go

@@ -1,4 +1,4 @@
-// Copyright © 2019 - 2021 Weald Technology Trading
+// Copyright © 2019 - 2022 Weald Technology Trading.
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -24,7 +24,7 @@ import (
 
 // ReleaseVersion is the release version of the codebase.
 // Usually overridden by tag names when building binaries.
-var ReleaseVersion = "local build (latest release 1.12.3)"
+var ReleaseVersion = "local build (latest release 1.18.0)"
 
 // versionCmd represents the version command
 var versionCmd = &cobra.Command{

docs/usage.md

@@ -266,13 +266,35 @@ $ ethdo version
 ### `block` commands
 
 Block commands focus on providing information about Ethereum 2 blocks.
+#### `analyze`
+`ethdo block info` obtains information about a block in Ethereum 2.  Options include:
+  - `blockid`: the ID (slot, root, 'head') of the block to obtain
+
+```sh
+$ ethdo block analyze --blockid=80
+Value for block 80: 488.531
+```
+
+Additional information is supplied when using `--verbose`
+
+```
+$ ethdo block analyze --blockid=80 --verbose
+Attestation 0: distance 1, 119/119/132 new/total/possible votes, score 0.844, value 100.406
+Attestation 1: distance 1, 116/116/131 new/total/possible votes, score 0.844, value 97.875
+Attestation 2: distance 1, 115/115/131 new/total/possible votes, score 0.844, value 97.031
+Attestation 3: distance 1, 114/114/132 new/total/possible votes, score 0.844, value 96.188
+Attestation 4: distance 1, 113/113/132 new/total/possible votes, score 0.844, value 95.344
+Attestation 5: distance 1, 2/22/132 new/total/possible votes, score 0.844, value 1.688
+Value for block 80: 488.531
+```
+
 #### `info`
 
 `ethdo block info` obtains information about a block in Ethereum 2.  Options include:
-  - `slot`: the slot at which to attempt to fetch the block
+  - `blockid`: the ID (slot, root, 'head') of the block to obtain
 
 ```sh
-$ ethdo block info --slot=80 
+$ ethdo block info --blockid=80
 Attestations: 1
 Attester slashings: 0
 Deposits: 0
@@ -451,6 +473,40 @@ $ ethdo slot time --slot=5
 2020-12-01 12:01:23 +0000 GMT
 ```
 
+### `synccommittee` commands
+
+Sync committee commands focus on information about sync committees.
+
+#### `inclusion`
+
+`ethdo synccommittee inclusion` provides information about the inclusion, or not, of a validator's sync committee messages.  Options include:
+  - `account` the account of the validator for which to print sync committee contributions
+  - `index` the index of the validator for which to print sync committee contributions
+  - `pubkey` the public key of the validator for which to print sync committee contributions
+  - `epoch` the specific epoch for which to print sync committee contributions.  Defaults to the last complete epoch
+
+
+```sh
+$ ethdo synccommittee inclusion --index=274946 --epoch=91592
+Epoch: 91593
+Expected: 32
+Included: 30
+Missed: 1
+No block: 1
+Per-slot result: ✓✓✓✓✓✓✓✓ ✓✓✕✓✓✓✓✓ ✓✓✓✓-✓✓✓ ✓✓✓✓✓✓✓✓
+```
+
+#### `members`
+
+`ethdo synccommittee members` provides information about the members of a sync committee.  Options include:
+  - `epoch` the specific epoch for which to provide sync committee members.
+  - `period` the period for which to provide sync committee members.  Can be 'current' or 'next'; dfeaults to 'current'
+
+```sh
+$ ethdo synccommittee members
+138334,116317,231736,65706,60046,148162,274946,34724,18051,122841,269578,121110,89733,154887,202118,243459,267543,82793,59504,238929,55360,272874,93917,83116,264342,244312,264907,79193,15443,27997,127175,140965,64416,66399,173906,268885,67779,48139,215005,191435,107954,225228,148630,169357,61091,223319,40668,184307,95903,81179,237461,41723,119710,243333,248243,42757,228686,252749,17546,231625,132030,15934,108465,104302,93026,191946,63738,80996,90679,227542,75463,64581,242030,5429,61623,157314,145363,224733,232492,45357,80674,198583,221422,48665,154803,128608,172512,261074,102835,129935,255726,40846,218932,139874,194575,17346,171565,76413,237859,103170,95661,83018,73902,246680,35795,257792,23836,136624,45745,190990,124229,37281,23818,233435,253903,37502,8669,31151,267179,27954,181019,145719,112270,1899,184844,175014,121769,41717,218760,44813,255860,64865,31985,231664,134296,88114,185542,27557,1698,62470,79182,184325,80380,8865,218456,178979,243886,9466,221389,131476,160857,62916,195389,160182,99293,100263,242371,144594,227527,275978,65714,74350,60121,46642,219334,157142,99379,203508,84367,251808,276456,92563,199831,215312,193875,129690,104234,44290,227725,194780,163061,162328,176517,278620,137355,212826,131615,125734,151873,18977,147927,272759,160537,210675,180411,24203,37266,247527,128678,270287,90352,23043,169645,5304,183412,237387,79751,37635,275139,95857,185990,235565,49425,255836,254314,77582,104172,168556,143653,64173,64504,130363,216602,218107,181130,191845,56454,2040,270365,161952,222409,45097,51611,219190,154903,162311,257460,106337,110775,42928,275709,202352,54724,272295,274470,35220,19694,10347,169585,104938,35121,212982,190582,77999,110201,141519,239881,81263,84314,148883,254649,256309,270013,254179,134009,149660,177127,201926,30533,164789,154343,57437,28958,135169,186415,218514,171355,165247,213526,100044,184264,93278,269329,159634,4092,224671,217236,123946,80703,85444,247742,17959,146473,128231,167559,133899,181532,33378,79060,119785,249443,180469,43692,169679,154421,114047,87877,28337,59072,19807,204598,220293,99461,55272,227923,4503,12580,27044,68955,157373,61321,265034,106833,31534,69137,264783,129588,70433,88338,113528,226211,123003,118982,131549,60350,78896,165715,119736,52639,93274,164295,278837,186453,69910,36768,249533,106205,184057,253232,88155,121377,242589,148236,250065,191526,277249,157463,226527,93000,64784,176880,176380,144301,52061,169803,134291,96648,211716,223000,157911,256737,100938,50434,41075,114894,259888,116872,218201,83617,76348,256832,17113,50270,96468,128448,36987,127511,42397,10154,49234,193346,126352,57719,17029,213127,157942,187829,2353,62462,73637,29053,120324,108515,254684,35982,188131,217092,256206,85802,105907,21204,147562,188961,154541,131147,16000,225112,58362,170375,42239,188309,60280,125472,220119,268946,65736,274053,223569,60454,239552,4401,139357,279634,162711,112016,90295,170641,239770,212067,213770,78311,49057,256295,28666,167207,166783,213148,30689,72118,55912,197733,205116,106169,40570,225057,122079,126423,217781,212897,147499,201774,10616,157826,155954,258431,212151,255318,97138,151907,181491,40236,272993,104430,178068,56089,10067,185066,93669,124108,12785,230215,67995,196282,248285,215370,167715,186183,238147,164161,15068,127990,166146,244578,195912,199812,248435,135597,143024,225304,27045,238140,87008,272550,165234,218128,160038,17697,25332,23446,265921,201045,241106
+```
+
 ### `validator` commands
 
 Validator commands focus on interaction with Ethereum 2 validators.
@@ -527,6 +583,16 @@ $ ethdo validator keycheck --withdrawal-credentials=0x007e28dcf9029e8d92ca4b5d01
 Withdrawal credentials confirmed at path m/12381/3600/10/0
 ```
 
+#### `expectation`
+
+`ethdo validator expectation` calculates the times between expected actions.
+
+```sh
+$ ethdo validator expectation
+Expected time between block proposals: 4 weeks 6 days
+Expected time between sync committees: 1 year 27 weeks
+```
+
 ### `attester` commands
 
 Attester commands focus on Ethereum 2 validators' actions as attesters.

go.mod

@@ -4,43 +4,48 @@ go 1.16
 
 require (
 	github.com/OneOfOne/xxhash v1.2.5 // indirect
-	github.com/attestantio/dirk v1.0.4
-	github.com/attestantio/go-eth2-client v0.7.2
-	github.com/ferranbt/fastssz v0.0.0-20210905181407-59cf6761a7d5
-	github.com/gofrs/uuid v4.0.0+incompatible
+	github.com/attestantio/dirk v1.1.0
+	github.com/attestantio/go-eth2-client v0.11.0
+	github.com/aws/aws-sdk-go v1.42.44 // indirect
+	github.com/ferranbt/fastssz v0.0.0-20220103083642-bc5fefefa28b
+	github.com/gofrs/uuid v4.2.0+incompatible
 	github.com/google/uuid v1.3.0
+	github.com/hako/durafmt v0.0.0-20210608085754-5c1018a4e16b
 	github.com/hashicorp/hcl v1.0.1-vault-3 // indirect
-	github.com/herumi/bls-eth-go-binary v0.0.0-20210902234237-7763804ee078
+	github.com/herumi/bls-eth-go-binary v0.0.0-20220103074059-01b0ca9e9ef7
+	github.com/jackc/puddle v1.2.1 // indirect
 	github.com/minio/highwayhash v1.0.2 // indirect
 	github.com/mitchellh/go-homedir v1.1.0
-	github.com/mitchellh/mapstructure v1.4.2 // indirect
 	github.com/nbutton23/zxcvbn-go v0.0.0-20210217022336-fa2cb2858354
 	github.com/pkg/errors v0.9.1
 	github.com/protolambda/zssz v0.1.5 // indirect
-	github.com/prysmaticlabs/ethereumapis v0.0.0-20210201130911-92b2a467c108 // indirect
 	github.com/prysmaticlabs/go-bitfield v0.0.0-20210809151128-385d8c5e3fb7
 	github.com/prysmaticlabs/go-ssz v0.0.0-20210121151755-f6208871c388
-	github.com/rs/zerolog v1.23.0
-	github.com/spf13/cobra v1.2.1
+	github.com/rs/zerolog v1.26.1
+	github.com/spf13/afero v1.8.0 // indirect
+	github.com/spf13/cobra v1.3.0
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.8.1
+	github.com/spf13/viper v1.10.1
 	github.com/stretchr/testify v1.7.0
 	github.com/tyler-smith/go-bip39 v1.1.0
 	github.com/wealdtech/go-bytesutil v1.1.1
 	github.com/wealdtech/go-ecodec v1.1.2
-	github.com/wealdtech/go-eth2-types/v2 v2.5.6
-	github.com/wealdtech/go-eth2-util v1.6.5
-	github.com/wealdtech/go-eth2-wallet v1.14.6
-	github.com/wealdtech/go-eth2-wallet-dirk v1.1.8
+	github.com/wealdtech/go-eth2-types/v2 v2.6.0
+	github.com/wealdtech/go-eth2-util v1.7.0
+	github.com/wealdtech/go-eth2-wallet v1.15.0
+	github.com/wealdtech/go-eth2-wallet-dirk v1.2.0
 	github.com/wealdtech/go-eth2-wallet-distributed v1.1.4
-	github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4 v1.1.6
-	github.com/wealdtech/go-eth2-wallet-hd/v2 v2.5.5
-	github.com/wealdtech/go-eth2-wallet-nd/v2 v2.3.4
-	github.com/wealdtech/go-eth2-wallet-store-filesystem v1.16.15
-	github.com/wealdtech/go-eth2-wallet-store-s3 v1.9.5
-	github.com/wealdtech/go-eth2-wallet-store-scratch v1.6.3
-	github.com/wealdtech/go-eth2-wallet-types/v2 v2.8.5
+	github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4 v1.2.0
+	github.com/wealdtech/go-eth2-wallet-hd/v2 v2.6.0
+	github.com/wealdtech/go-eth2-wallet-nd/v2 v2.4.0
+	github.com/wealdtech/go-eth2-wallet-store-filesystem v1.17.0
+	github.com/wealdtech/go-eth2-wallet-store-s3 v1.10.0
+	github.com/wealdtech/go-eth2-wallet-store-scratch v1.7.0
+	github.com/wealdtech/go-eth2-wallet-types/v2 v2.9.0
 	github.com/wealdtech/go-string2eth v1.1.0
+	golang.org/x/crypto v0.0.0-20220128200615-198e4374d7ed // indirect
 	golang.org/x/text v0.3.7
-	google.golang.org/grpc v1.40.0
+	google.golang.org/genproto v0.0.0-20220126215142-9970aeb2e350 // indirect
+	google.golang.org/grpc v1.44.0
+	gopkg.in/ini.v1 v1.66.3 // indirect
 )

go.sum

@@ -3,6 +3,7 @@ cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
 cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
 cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.44.3/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
 cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
 cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
 cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
@@ -15,6 +16,7 @@ cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOY
 cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
 cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
 cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
+cloud.google.com/go v0.75.0/go.mod h1:VGuuCn7PG0dwsd5XPVm2Mm3wlh3EL55/79EKB6hlPTY=
 cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
 cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
 cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
@@ -22,8 +24,11 @@ cloud.google.com/go v0.83.0/go.mod h1:Z7MJUsANfY0pYPdw0lbnivPx4/vhy/e2FEkSkF7vAV
 cloud.google.com/go v0.84.0/go.mod h1:RazrYuxIK6Kb7YrzzhPoLmCVzl7Sup4NrbKPg8KHSUM=
 cloud.google.com/go v0.87.0/go.mod h1:TpDYlFy7vuLzZMMZ+B6iRiELaY7z/gJPaqbMx6mlWcY=
 cloud.google.com/go v0.90.0/go.mod h1:kRX0mNRHe0e2rC6oNakvwQqzyDmg57xJ+SZU1eT2aDQ=
-cloud.google.com/go v0.92.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
 cloud.google.com/go v0.93.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
+cloud.google.com/go v0.94.1/go.mod h1:qAlAugsXlC+JWO+Bke5vCtc9ONxjQT3drlTTnAplMW4=
+cloud.google.com/go v0.97.0/go.mod h1:GF7l59pYBVlXQIBLx3a761cZ41F9bBH3JUlihCt2Udc=
+cloud.google.com/go v0.98.0/go.mod h1:ua6Ush4NALrHk5QXDWnjvZHN93OuF0HfuEPq9I1X0cM=
+cloud.google.com/go v0.99.0/go.mod h1:w0Xx2nLzqWJPuozYQX+hFfCSI8WioryfRDzkoI/Y2ZA=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
@@ -32,20 +37,23 @@ cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4g
 cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
-cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
+cloud.google.com/go/firestore v1.6.0/go.mod h1:afJwI0vaXwAG54kI7A//lP/lSPDkQORQuMkv56TxEPU=
+cloud.google.com/go/firestore v1.6.1/go.mod h1:asNXNOzBdyVQmEU+ggO8UPodTkEVFW5Qx+rwHnAz+EY=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
 cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
 cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
-cloud.google.com/go/secretmanager v0.1.0/go.mod h1:3nGKHvnzDUVit7U0S9KAKJ4aOsO1xtwRG+7ey5LK1bM=
+cloud.google.com/go/secretmanager v1.0.0/go.mod h1:+Qkm5qxIJ5mk74xxIXA+87fseaY1JLYBcFPQoc/GQxg=
 cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
 cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
+cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/HdrHistogram/hdrhistogram-go v1.1.1/go.mod h1:yDgFjdqOqDEKOvasDdhWNXYg9BVp4O+o5f6V/ehm6Oo=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/OneOfOne/xxhash v1.2.5 h1:zl/OfRA6nftbBK9qTohYBJ5xvw6C/oNKizR7cZGl3cI=
@@ -61,21 +69,28 @@ github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kd
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
+github.com/armon/go-metrics v0.3.10/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4QAOwNTFc=
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
-github.com/attestantio/dirk v1.0.4 h1:e5WFS3RxTvtk3BgLjUACItCcjwer07QiYWXP0pjnbZM=
-github.com/attestantio/dirk v1.0.4/go.mod h1:w9QSIVDKMqD7tjK4e5wrTUCyCNlXaDT8U3SfJ+JOsx4=
-github.com/attestantio/go-eth2-client v0.7.2 h1:qxqUX6y8rpyHBk1SGXRAmCLwRSgL28OumP4ic7vKjLM=
-github.com/attestantio/go-eth2-client v0.7.2/go.mod h1:kEK9iAAOBoADO5wEkd84FEOzjT1zXgVWveQsqn+uBGg=
+github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/attestantio/dirk v1.1.0 h1:hwMTYZkwj/Y0um3OD0LQxg2xSl4/5xqVWV2MRePE4ec=
+github.com/attestantio/dirk v1.1.0/go.mod h1:2jkOw/XHjvIDdhDcmj+Z3kuVPpxMcQ6zxzzjSSv71PY=
+github.com/attestantio/go-eth2-client v0.8.1/go.mod h1:kEK9iAAOBoADO5wEkd84FEOzjT1zXgVWveQsqn+uBGg=
+github.com/attestantio/go-eth2-client v0.10.0 h1:nmOmzErfz4I2gEkucHKOaFwkbwD4i6JbIX38Z8Dm4Tc=
+github.com/attestantio/go-eth2-client v0.10.0/go.mod h1:ijuXoXJCBFMexUYaBOl8PXfZKwYUFJy7cV03TMdw8Bo=
+github.com/attestantio/go-eth2-client v0.11.0 h1:8/Jn5AAfd+4tOggLi+FvOv9/ORaObECv42ab7vK2FJc=
+github.com/attestantio/go-eth2-client v0.11.0/go.mod h1:zXL/BxC0cBBhxj+tP7QG7t9Ufoa8GwQLdlbvZRd9+dM=
 github.com/aws/aws-sdk-go v1.33.17/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
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@@ -467,13 +537,14 @@ github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5Cc
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@@ -481,33 +552,38 @@ github.com/wealdtech/go-ecodec v1.1.1/go.mod h1:PSdBFEB6cltdT7V4E1jbboufMZTZXcQO
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@@ -519,9 +595,13 @@ github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
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@@ -544,11 +624,17 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
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@@ -588,11 +674,11 @@ golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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@@ -604,6 +690,7 @@ golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191002035440-2ec189313ef0/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191116160921-f9c825593386/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -617,7 +704,6 @@ golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5/go.mod h1:qpuaurCH72eLCgpAm/
 golang.org/x/net v0.0.0-20200506145744-7e3656a0809f/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200513185701-a91f0712d120/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200520182314-0ba52f642ac2/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/net v0.0.0-20200528225125-3c3fba18258b/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
@@ -625,6 +711,7 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20201031054903-ff519b6c9102/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201209123823-ac852fbbde11/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4/go.mod h1:RBQZq4jEuRlivfhVLdyRGr576XBO4/greRjx4P4O3yc=
@@ -634,8 +721,15 @@ golang.org/x/net v0.0.0-20210503060351-7fd8e65b6420/go.mod h1:9nx3DQGgdP8bBQD5qx
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20210908191846-a5e095526f91 h1:E8wdt+zBjoxD3MA65wEc3pl25BsTi7tbkpwc4ANThjc=
-golang.org/x/net v0.0.0-20210908191846-a5e095526f91/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
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 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -647,11 +741,12 @@ golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5/go.mod h1:KelEdhl1UZF7XfJ
 golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210220000619-9bb904979d93/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210313182246-cd4f82c27b84/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
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 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210628180205-a41e5a781914/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210805134026-6f1e6394065a/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210819190943-2bc19b11175f/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20211005180243-6b3c2da341f1/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
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 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -662,6 +757,7 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -671,6 +767,7 @@ golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190130150945-aca44879d564/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -680,14 +777,18 @@ golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -709,12 +810,15 @@ golang.org/x/sys v0.0.0-20210104204734-6f8348627aad/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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@@ -723,9 +827,28 @@ golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBc
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 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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@@ -748,7 +871,6 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
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 golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190506145303-2d16b83fe98c/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
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@@ -757,9 +879,9 @@ golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgw
 golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
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@@ -792,12 +914,14 @@ golang.org/x/tools v0.0.0-20201201161351-ac6f37ff4c2a/go.mod h1:emZCQorbCU4vsT4f
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@@ -828,12 +952,19 @@ google.golang.org/api v0.36.0/go.mod h1:+z5ficQTmoYpPn8LCUNVpK5I7hwkpjbcgqA7I34q
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-google.golang.org/api v0.44.0/go.mod h1:EBOGZqzyhtvMDoxwS97ctnh0zUmYY6CxqXsc1AvkYD8=
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@@ -880,7 +1011,9 @@ google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6D
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@@ -896,8 +1029,26 @@ google.golang.org/genproto v0.0.0-20210716133855-ce7ef5c701ea/go.mod h1:AxrInvYm
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@@ -923,8 +1074,13 @@ google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQ
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 google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
 google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
-google.golang.org/grpc v1.40.0 h1:AGJ0Ih4mHjSeibYkFGh1dD9KJ/eOtZ93I6hoHhukQ5Q=
 google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
+google.golang.org/grpc v1.40.1/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
+google.golang.org/grpc v1.41.0/go.mod h1:U3l9uK9J0sini8mHphKoXyaqDA/8VyGnDee1zzIUK6k=
+google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
+google.golang.org/grpc v1.43.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
+google.golang.org/grpc v1.44.0 h1:weqSxi/TMs1SqFRMHCtBgXRs8k3X39QIDEZ0pRcttUg=
+google.golang.org/grpc v1.44.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
@@ -949,8 +1105,10 @@ gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
-gopkg.in/ini.v1 v1.62.0 h1:duBzk771uxoUuOlyRLkHsygud9+5lrlGjdFBb4mSKDU=
-gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/ini.v1 v1.63.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/ini.v1 v1.66.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/ini.v1 v1.66.3 h1:jRskFVxYaMGAMUbN0UZ7niA9gzL9B49DOqE78vg0k3w=
+gopkg.in/ini.v1 v1.66.3/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/jcmturner/gokrb5.v7 v7.5.0/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuvyavf11/WM=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

services/chaintime/standard/service.go

@@ -32,6 +32,7 @@ type Service struct {
 	slotsPerEpoch                uint64
 	epochsPerSyncCommitteePeriod uint64
 	altairForkEpoch              phase0.Epoch
+	bellatrixForkEpoch           phase0.Epoch
 }
 
 // module-wide log.
@@ -92,12 +93,20 @@ func New(ctx context.Context, params ...Parameter) (*Service, error) {
 	}
 	log.Trace().Uint64("epoch", uint64(altairForkEpoch)).Msg("Obtained Altair fork epoch")
 
+	bellatrixForkEpoch, err := fetchBellatrixForkEpoch(ctx, parameters.forkScheduleProvider)
+	if err != nil {
+		// Set to far future epoch.
+		bellatrixForkEpoch = 0xffffffffffffffff
+	}
+	log.Trace().Uint64("epoch", uint64(bellatrixForkEpoch)).Msg("Obtained Bellatrix fork epoch")
+
 	s := &Service{
 		genesisTime:                  genesisTime,
 		slotDuration:                 slotDuration,
 		slotsPerEpoch:                slotsPerEpoch,
 		epochsPerSyncCommitteePeriod: epochsPerSyncCommitteePeriod,
 		altairForkEpoch:              altairForkEpoch,
+		bellatrixForkEpoch:           bellatrixForkEpoch,
 	}
 
 	return s, nil
@@ -213,3 +222,28 @@ func fetchAltairForkEpoch(ctx context.Context, provider eth2client.ForkScheduleP
 	}
 	return 0, errors.New("no altair fork obtained")
 }
+
+// BellatrixInitialEpoch provides the epoch at which the Bellatrix hard fork takes place.
+func (s *Service) BellatrixInitialEpoch() phase0.Epoch {
+	return s.bellatrixForkEpoch
+}
+
+func fetchBellatrixForkEpoch(ctx context.Context, provider eth2client.ForkScheduleProvider) (phase0.Epoch, error) {
+	forkSchedule, err := provider.ForkSchedule(ctx)
+	if err != nil {
+		return 0, err
+	}
+	count := 0
+	for i := range forkSchedule {
+		count++
+		if bytes.Equal(forkSchedule[i].CurrentVersion[:], forkSchedule[i].PreviousVersion[:]) {
+			// This is the genesis fork; ignore it.
+			continue
+		}
+		if count == 1 {
+			return forkSchedule[i].Epoch, nil
+		}
+		count++
+	}
+	return 0, errors.New("no bellatrix fork obtained")
+}

util/beaconnode.go

@@ -17,6 +17,7 @@ import (
 	"context"
 	"fmt"
 	"net/url"
+	"strings"
 	"time"
 
 	eth2client "github.com/attestantio/go-eth2-client"
@@ -31,6 +32,9 @@ func ConnectToBeaconNode(ctx context.Context, address string, timeout time.Durat
 		return nil, errors.New("no timeout specified")
 	}
 
+	if !strings.HasPrefix(address, "http") {
+		address = fmt.Sprintf("http://%s", address)
+	}
 	if !allowInsecure {
 		// Ensure the connection is either secure or local.
 		connectionURL, err := url.Parse(address)
@@ -39,7 +43,9 @@ func ConnectToBeaconNode(ctx context.Context, address string, timeout time.Durat
 		}
 		if connectionURL.Scheme == "http" &&
 			connectionURL.Host != "localhost" &&
-			connectionURL.Host != "127.0.0.1" {
+			!strings.HasPrefix(connectionURL.Host, "localhost:") &&
+			connectionURL.Host != "127.0.0.1" &&
+			!strings.HasPrefix(connectionURL.Host, "127.0.0.1:") {
 			fmt.Println("Connections to remote beacon nodes should be secure.  This warning can be silenced with --allow-insecure-connections")
 		}
 	}

util/networks.go

@@ -26,35 +26,32 @@ var networks = map[string]string{
 	"00000000219ab540356cbb839cbe05303d7705fa": "Mainnet",
 	"07b39f4fde4a38bace212b546dac87c58dfe3fdc": "Medalla",
 	"8c5fecdc472e27bc447696f431e425d02dd46a8c": "Pyrmont",
+	"ff50ed3d0ec03ac01d4c79aad74928bff48a7b2b": "Prater",
 }
 
 // Network returns the name of the network., calculated from the deposit contract information.
 // If not known, returns "Unknown".
 func Network(ctx context.Context, eth2Client eth2client.Service) (string, error) {
 	var address []byte
-	var err error
 
 	if eth2Client == nil {
 		return "", errors.New("no Ethereum 2 client supplied")
 	}
 
-	if provider, isProvider := eth2Client.(eth2client.DepositContractProvider); isProvider {
-		address, err = provider.DepositContractAddress(ctx)
-		if err != nil {
-			return "", errors.Wrap(err, "failed to obtain deposit contract address")
-		}
-	} else if provider, isProvider := eth2Client.(eth2client.SpecProvider); isProvider {
-		config, err := provider.Spec(ctx)
-		if err != nil {
-			return "", errors.Wrap(err, "failed to obtain chain specification")
-		}
-		if config == nil {
-			return "", errors.New("failed to return chain specification")
-		}
-		depositContractAddress, exists := config["DEPOSIT_CONTRACT_ADDRESS"]
-		if exists {
-			address = depositContractAddress.([]byte)
-		}
+	provider, isProvider := eth2Client.(eth2client.SpecProvider)
+	if !isProvider {
+		return "", errors.New("client does not provide deposit contract address")
+	}
+	config, err := provider.Spec(ctx)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to obtain chain specification")
+	}
+	if config == nil {
+		return "", errors.New("failed to return chain specification")
+	}
+	depositContractAddress, exists := config["DEPOSIT_CONTRACT_ADDRESS"]
+	if exists {
+		address = depositContractAddress.([]byte)
 	}
 
 	return network(address), nil

util/networks_test.go

@@ -1,4 +1,4 @@
-// Copyright © 2020 Weald Technology Trading
+// Copyright © 2020, 2021 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -23,38 +23,6 @@ import (
 	"github.com/wealdtech/ethdo/util"
 )
 
-// A mock Ethereum 2 client service that returns supplied deposit information.
-type depositETH2Client struct {
-	address   []byte
-	chainID   uint64
-	networkID uint64
-}
-
-// Name returns the name of the client implementation.
-func (c *depositETH2Client) Name() string {
-	return "deposit mock"
-}
-
-// Address returns the address of the client.
-func (c *depositETH2Client) Address() string {
-	return "mock"
-}
-
-// DepositContractAddress provides the Ethereum 1 address of the deposit contract.
-func (c *depositETH2Client) DepositContractAddress(ctx context.Context) ([]byte, error) {
-	return c.address, nil
-}
-
-// DepositContractChainID provides the Ethereum 1 chain ID of the deposit contract.
-func (c *depositETH2Client) DepositContractChainID(ctx context.Context) (uint64, error) {
-	return c.chainID, nil
-}
-
-// DepositContractNetworkID provides the Ethereum 1 network ID of the deposit contract.
-func (c *depositETH2Client) DepositContractNetworkID(ctx context.Context) (uint64, error) {
-	return c.networkID, nil
-}
-
 // A mock Ethereum 2 client service that returns spec information.
 type specETH2Client struct {
 	address []byte
@@ -88,15 +56,6 @@ func TestNetworks(t *testing.T) {
 			name: "Nil",
 			err:  "no Ethereum 2 client supplied",
 		},
-		{
-			name: "MainnetDeposit",
-			service: &depositETH2Client{
-				address:   testutil.HexToBytes("0x00000000219ab540356cbb839cbe05303d7705fa"),
-				chainID:   0,
-				networkID: 0,
-			},
-			network: "Mainnet",
-		},
 		{
 			name: "MainnetSpec",
 			service: &specETH2Client{
@@ -104,15 +63,6 @@ func TestNetworks(t *testing.T) {
 			},
 			network: "Mainnet",
 		},
-		{
-			name: "UnknownDeposit",
-			service: &depositETH2Client{
-				address:   testutil.HexToBytes("0x1111111111111111111111111111111111111111"),
-				chainID:   0,
-				networkID: 0,
-			},
-			network: "Unknown",
-		},
 		{
 			name: "UnknownSpec",
 			service: &specETH2Client{

util/validator.go

@@ -0,0 +1,79 @@
+// Copyright © 2022 Weald Technology Trading
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"context"
+	"encoding/hex"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	consensusclient "github.com/attestantio/go-eth2-client"
+	"github.com/attestantio/go-eth2-client/spec/phase0"
+	"github.com/pkg/errors"
+	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
+)
+
+// ValidatorIndex obtains the index of a validator.
+func ValidatorIndex(ctx context.Context, client consensusclient.Service, account string, pubKey string, index string) (phase0.ValidatorIndex, error) {
+	switch {
+	case account != "":
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		_, account, err := WalletAndAccountFromPath(ctx, account)
+		if err != nil {
+			return 0, errors.Wrap(err, "failed to obtain account")
+		}
+		return accountToIndex(ctx, account, client)
+	case pubKey != "":
+		pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(pubKey, "0x"))
+		if err != nil {
+			return 0, errors.Wrap(err, fmt.Sprintf("failed to decode public key %s", pubKey))
+		}
+		account, err := NewScratchAccount(nil, pubKeyBytes)
+		if err != nil {
+			return 0, errors.Wrap(err, fmt.Sprintf("invalid public key %s", pubKey))
+		}
+		return accountToIndex(ctx, account, client)
+	case index != "":
+		val, err := strconv.ParseUint(index, 10, 64)
+		if err != nil {
+			return 0, err
+		}
+		return phase0.ValidatorIndex(val), nil
+	default:
+		return 0, errors.New("no validator")
+	}
+}
+
+func accountToIndex(ctx context.Context, account e2wtypes.Account, client consensusclient.Service) (phase0.ValidatorIndex, error) {
+	pubKey, err := BestPublicKey(account)
+	if err != nil {
+		return 0, err
+	}
+
+	pubKeys := make([]phase0.BLSPubKey, 1)
+	copy(pubKeys[0][:], pubKey.Marshal())
+	validators, err := client.(consensusclient.ValidatorsProvider).ValidatorsByPubKey(ctx, "head", pubKeys)
+	if err != nil {
+		return 0, err
+	}
+
+	for index := range validators {
+		return index, nil
+	}
+	return 0, errors.New("validator not found")
+}