ePBS configuration constants

config/fieldparams/mainnet.go

@@ -14,6 +14,7 @@ const (
 	CurrentEpochAttestationsLength        = 4096          // MAX_ATTESTATIONS * SLOTS_PER_EPOCH
 	SlashingsLength                       = 8192          // EPOCHS_PER_SLASHINGS_VECTOR
 	SyncCommitteeLength                   = 512           // SYNC_COMMITTEE_SIZE
+	PTCSize                               = 512           // PTC_SIZE [New in ePBS]
 	RootLength                            = 32            // RootLength defines the byte length of a Merkle root.
 	BLSSignatureLength                    = 96            // BLSSignatureLength defines the byte length of a BLSSignature.
 	BLSPubkeyLength                       = 48            // BLSPubkeyLength defines the byte length of a BLSSignature.
@@ -28,6 +29,8 @@ const (
 	MaxWithdrawalsPerPayload              = 16            // MaxWithdrawalsPerPayloadLength defines the maximum number of withdrawals that can be included in a payload.
 	MaxBlobsPerBlock                      = 6             // MaxBlobsPerBlock defines the maximum number of blobs with respect to consensus rule can be included in a block.
 	MaxBlobCommitmentsPerBlock            = 4096          // MaxBlobCommitmentsPerBlock defines the theoretical limit of blobs can be included in a block.
+	MaxPayloadAttestationsPerBlock        = 4             // MAX_PAYLOAD_ATTESTATIONS [New in ePBS]
+	MaxTransactionsPerInclusionList       = 1024          // MAX_TRANSACTIONS_PER_INCLUSION_LIST	[New in ePBS]
 	LogMaxBlobCommitments                 = 12            // Log_2 of MaxBlobCommitmentsPerBlock
 	BlobLength                            = 131072        // BlobLength defines the byte length of a blob.
 	BlobSize                              = 131072        // defined to match blob.size in bazel ssz codegen

config/fieldparams/minimal.go

@@ -14,6 +14,7 @@ const (
 	CurrentEpochAttestationsLength        = 1024          // MAX_ATTESTATIONS * SLOTS_PER_EPOCH
 	SlashingsLength                       = 64            // EPOCHS_PER_SLASHINGS_VECTOR
 	SyncCommitteeLength                   = 32            // SYNC_COMMITTEE_SIZE
+	PTCSize                               = 32            // PTC_SIZE [New in ePBS]
 	RootLength                            = 32            // RootLength defines the byte length of a Merkle root.
 	BLSSignatureLength                    = 96            // BLSSignatureLength defines the byte length of a BLSSignature.
 	BLSPubkeyLength                       = 48            // BLSPubkeyLength defines the byte length of a BLSSignature.
@@ -28,6 +29,8 @@ const (
 	MaxWithdrawalsPerPayload              = 4             // MaxWithdrawalsPerPayloadLength defines the maximum number of withdrawals that can be included in a payload.
 	MaxBlobsPerBlock                      = 6             // MaxBlobsPerBlock defines the maximum number of blobs with respect to consensus rule can be included in a block.
 	MaxBlobCommitmentsPerBlock            = 16            // MaxBlobCommitmentsPerBlock defines the theoretical limit of blobs can be included in a block.
+	MaxPayloadAttestationsPerBlock        = 4             // MAX_PAYLOAD_ATTESTATIONS [New in ePBS]
+	MaxTransactionsPerInclusionList       = 16            // MAX_TRANSACTIONS_PER_INCLUSION_LIST	[New in ePBS]
 	LogMaxBlobCommitments                 = 4             // Log_2 of MaxBlobCommitmentsPerBlock
 	BlobLength                            = 131072        // BlobLength defines the byte length of a blob.
 	BlobSize                              = 131072        // defined to match blob.size in bazel ssz codegen

config/params/config.go

@@ -126,6 +126,8 @@ type BeaconChainConfig struct {
 	DomainApplicationBuilder          [4]byte `yaml:"DOMAIN_APPLICATION_BUILDER" spec:"true"`            // DomainApplicationBuilder defines the BLS signature domain for application builder.
 	DomainBLSToExecutionChange        [4]byte `yaml:"DOMAIN_BLS_TO_EXECUTION_CHANGE" spec:"true"`        // DomainBLSToExecutionChange defines the BLS signature domain to change withdrawal addresses to ETH1 prefix
 	DomainConsolidation               [4]byte `yaml:"DOMAIN_CONSOLIDATION" spec:"true"`
+	DomainBeaconBuilder               [4]byte `yaml:"DOMAIN_BEACON_BULDER" spec:"false"` // DomainBeaconBuilder defines the BLS signature domain used by builders [New in ePBS]
+	DomainPTCAttester                 [4]byte `yaml:"DOMAIN_PTC_ATTESTER" spec:"false"`  // DomainPTCAttester defines the BLS signature domain used by PTC members [New in ePBS]
 
 	// Prysm constants.
 	GweiPerEth                     uint64          // GweiPerEth is the amount of gwei corresponding to 1 eth.
@@ -166,6 +168,8 @@ type BeaconChainConfig struct {
 	DenebForkEpoch       primitives.Epoch `yaml:"DENEB_FORK_EPOCH" spec:"true"`       // DenebForkEpoch is used to represent the assigned fork epoch for deneb.
 	ElectraForkVersion   []byte           `yaml:"ELECTRA_FORK_VERSION" spec:"true"`   // ElectraForkVersion is used to represent the fork version for deneb.
 	ElectraForkEpoch     primitives.Epoch `yaml:"ELECTRA_FORK_EPOCH" spec:"true"`     // ElectraForkEpoch is used to represent the assigned fork epoch for deneb.
+	EPBSForkVersion      []byte           // EPBSForkVersion is used to represent the fork version for ePBS.
+	EPBSForkEpoch        primitives.Epoch // EPBSForkEpoch is used to represent the assigned fork epoch for ePBS.
 
 	ForkVersionSchedule map[[fieldparams.VersionLength]byte]primitives.Epoch // Schedule of fork epochs by version.
 	ForkVersionNames    map[[fieldparams.VersionLength]byte]string           // Human-readable names of fork versions.
@@ -314,6 +318,7 @@ func ConfigForkVersions(b *BeaconChainConfig) map[[fieldparams.VersionLength]byt
 		bytesutil.ToBytes4(b.CapellaForkVersion):   version.Capella,
 		bytesutil.ToBytes4(b.DenebForkVersion):     version.Deneb,
 		bytesutil.ToBytes4(b.ElectraForkVersion):   version.Electra,
+		bytesutil.ToBytes4(b.EPBSForkVersion):      version.EPBS,
 	}
 }
 

config/params/mainnet_config.go

@@ -29,6 +29,8 @@ const (
 	mainnetDenebForkEpoch = 269568 // March 13, 2024, 13:55:35 UTC
 	// Electra Fork Epoch for mainnet config
 	mainnetElectraForkEpoch = math.MaxUint64 // Far future / to be defined
+	// ePBS Fork Epoch for mainnet config.
+	mainnetEPBSForkEpoch = math.MaxUint64
 )
 
 var mainnetNetworkConfig = &NetworkConfig{
@@ -216,6 +218,8 @@ var mainnetBeaconConfig = &BeaconChainConfig{
 	DenebForkEpoch:       mainnetDenebForkEpoch,
 	ElectraForkVersion:   []byte{5, 0, 0, 0},
 	ElectraForkEpoch:     mainnetElectraForkEpoch,
+	EPBSForkVersion:      []byte{6, 0, 0, 0},
+	EPBSForkEpoch:        mainnetEPBSForkEpoch,
 
 	// New values introduced in Altair hard fork 1.
 	// Participation flag indices.
@@ -335,6 +339,7 @@ func FillTestVersions(c *BeaconChainConfig, b byte) {
 	c.CapellaForkVersion = make([]byte, fieldparams.VersionLength)
 	c.DenebForkVersion = make([]byte, fieldparams.VersionLength)
 	c.ElectraForkVersion = make([]byte, fieldparams.VersionLength)
+	c.EPBSForkVersion = make([]byte, fieldparams.VersionLength)
 
 	c.GenesisForkVersion[fieldparams.VersionLength-1] = b
 	c.AltairForkVersion[fieldparams.VersionLength-1] = b
@@ -342,6 +347,7 @@ func FillTestVersions(c *BeaconChainConfig, b byte) {
 	c.CapellaForkVersion[fieldparams.VersionLength-1] = b
 	c.DenebForkVersion[fieldparams.VersionLength-1] = b
 	c.ElectraForkVersion[fieldparams.VersionLength-1] = b
+	c.EPBSForkVersion[fieldparams.VersionLength-1] = b
 
 	c.GenesisForkVersion[0] = 0
 	c.AltairForkVersion[0] = 1
@@ -349,4 +355,5 @@ func FillTestVersions(c *BeaconChainConfig, b byte) {
 	c.CapellaForkVersion[0] = 3
 	c.DenebForkVersion[0] = 4
 	c.ElectraForkVersion[0] = 5
+	c.EPBSForkVersion[0] = 6
 }

runtime/version/fork.go

@@ -9,6 +9,7 @@ const (
 	Capella
 	Deneb
 	Electra
+	EPBS
 )
 
 var versionToString = map[int]string{
@@ -18,6 +19,7 @@ var versionToString = map[int]string{
 	Capella:   "capella",
 	Deneb:     "deneb",
 	Electra:   "electra",
+	EPBS:      "epbs",
 }
 
 // stringToVersion and allVersions are populated in init()