params

package
v1.13.14-0.1.0-rc.1 Latest Latest
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 Go to latest Published: Oct 29, 2024 License: GPL-3.0 Imports: 9 Imported by: 0

Documentation

Overview

Copyright 2024 the libevm authors.

The libevm additions to go-ethereum are free software: you can redistribute them and/or modify them under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

The libevm additions are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

Copyright 2024 the libevm authors.

The libevm additions to go-ethereum are free software: you can redistribute them and/or modify them under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

The libevm additions are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

Copyright 2024 the libevm authors.

The libevm additions to go-ethereum are free software: you can redistribute them and/or modify them under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

The libevm additions are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

Index

Examples

Constants

View Source 
const (
	Wei   = 1
	GWei  = 1e9
	Ether = 1e18
)

These are the multipliers for ether denominations. Example: To get the wei value of an amount in 'gwei', use 

new(big.Int).Mul(value, big.NewInt(params.GWei))
View Source 
const (
	// BloomBitsBlocks is the number of blocks a single bloom bit section vector
	// contains on the server side.
	BloomBitsBlocks uint64 = 4096

	// BloomBitsBlocksClient is the number of blocks a single bloom bit section vector
	// contains on the light client side
	BloomBitsBlocksClient uint64 = 32768

	// BloomConfirms is the number of confirmation blocks before a bloom section is
	// considered probably final and its rotated bits are calculated.
	BloomConfirms = 256

	// CHTFrequency is the block frequency for creating CHTs
	CHTFrequency = 32768

	// BloomTrieFrequency is the block frequency for creating BloomTrie on both
	// server/client sides.
	BloomTrieFrequency = 32768

	// HelperTrieConfirmations is the number of confirmations before a client is expected
	// to have the given HelperTrie available.
	HelperTrieConfirmations = 2048

	// HelperTrieProcessConfirmations is the number of confirmations before a HelperTrie
	// is generated
	HelperTrieProcessConfirmations = 256

	// CheckpointFrequency is the block frequency for creating checkpoint
	CheckpointFrequency = 32768

	// CheckpointProcessConfirmations is the number before a checkpoint is generated
	CheckpointProcessConfirmations = 256

	// FullImmutabilityThreshold is the number of blocks after which a chain segment is
	// considered immutable (i.e. soft finality). It is used by the downloader as a
	// hard limit against deep ancestors, by the blockchain against deep reorgs, by
	// the freezer as the cutoff threshold and by clique as the snapshot trust limit.
	FullImmutabilityThreshold = 90000

	// LightImmutabilityThreshold is the number of blocks after which a header chain
	// segment is considered immutable for light client(i.e. soft finality). It is used by
	// the downloader as a hard limit against deep ancestors, by the blockchain against deep
	// reorgs, by the light pruner as the pruning validity guarantee.
	LightImmutabilityThreshold = 30000
)
View Source 
const (
	GasLimitBoundDivisor uint64 = 1024               // The bound divisor of the gas limit, used in update calculations.
	MinGasLimit          uint64 = 5000               // Minimum the gas limit may ever be.
	MaxGasLimit          uint64 = 0x7fffffffffffffff // Maximum the gas limit (2^63-1).
	GenesisGasLimit      uint64 = 4712388            // Gas limit of the Genesis block.

	MaximumExtraDataSize  uint64 = 32    // Maximum size extra data may be after Genesis.
	ExpByteGas            uint64 = 10    // Times ceil(log256(exponent)) for the EXP instruction.
	SloadGas              uint64 = 50    // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added.
	CallValueTransferGas  uint64 = 9000  // Paid for CALL when the value transfer is non-zero.
	CallNewAccountGas     uint64 = 25000 // Paid for CALL when the destination address didn't exist prior.
	TxGas                 uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions.
	TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions.
	TxDataZeroGas         uint64 = 4     // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions.
	QuadCoeffDiv          uint64 = 512   // Divisor for the quadratic particle of the memory cost equation.
	LogDataGas            uint64 = 8     // Per byte in a LOG* operation's data.
	CallStipend           uint64 = 2300  // Free gas given at beginning of call.

	Keccak256Gas     uint64 = 30 // Once per KECCAK256 operation.
	Keccak256WordGas uint64 = 6  // Once per word of the KECCAK256 operation's data.
	InitCodeWordGas  uint64 = 2  // Once per word of the init code when creating a contract.

	SstoreSetGas    uint64 = 20000 // Once per SSTORE operation.
	SstoreResetGas  uint64 = 5000  // Once per SSTORE operation if the zeroness changes from zero.
	SstoreClearGas  uint64 = 5000  // Once per SSTORE operation if the zeroness doesn't change.
	SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero.

	NetSstoreNoopGas  uint64 = 200   // Once per SSTORE operation if the value doesn't change.
	NetSstoreInitGas  uint64 = 20000 // Once per SSTORE operation from clean zero.
	NetSstoreCleanGas uint64 = 5000  // Once per SSTORE operation from clean non-zero.
	NetSstoreDirtyGas uint64 = 200   // Once per SSTORE operation from dirty.

	NetSstoreClearRefund      uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot
	NetSstoreResetRefund      uint64 = 4800  // Once per SSTORE operation for resetting to the original non-zero value
	NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value

	SstoreSentryGasEIP2200            uint64 = 2300  // Minimum gas required to be present for an SSTORE call, not consumed
	SstoreSetGasEIP2200               uint64 = 20000 // Once per SSTORE operation from clean zero to non-zero
	SstoreResetGasEIP2200             uint64 = 5000  // Once per SSTORE operation from clean non-zero to something else
	SstoreClearsScheduleRefundEIP2200 uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot

	ColdAccountAccessCostEIP2929 = uint64(2600) // COLD_ACCOUNT_ACCESS_COST
	ColdSloadCostEIP2929         = uint64(2100) // COLD_SLOAD_COST
	WarmStorageReadCostEIP2929   = uint64(100)  // WARM_STORAGE_READ_COST

	// In EIP-2200: SstoreResetGas was 5000.
	// In EIP-2929: SstoreResetGas was changed to '5000 - COLD_SLOAD_COST'.
	// In EIP-3529: SSTORE_CLEARS_SCHEDULE is defined as SSTORE_RESET_GAS + ACCESS_LIST_STORAGE_KEY_COST
	// Which becomes: 5000 - 2100 + 1900 = 4800
	SstoreClearsScheduleRefundEIP3529 uint64 = SstoreResetGasEIP2200 - ColdSloadCostEIP2929 + TxAccessListStorageKeyGas

	JumpdestGas   uint64 = 1     // Once per JUMPDEST operation.
	EpochDuration uint64 = 30000 // Duration between proof-of-work epochs.

	CreateDataGas         uint64 = 200   //
	CallCreateDepth       uint64 = 1024  // Maximum depth of call/create stack.
	ExpGas                uint64 = 10    // Once per EXP instruction
	LogGas                uint64 = 375   // Per LOG* operation.
	CopyGas               uint64 = 3     //
	StackLimit            uint64 = 1024  // Maximum size of VM stack allowed.
	TierStepGas           uint64 = 0     // Once per operation, for a selection of them.
	LogTopicGas           uint64 = 375   // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas.
	CreateGas             uint64 = 32000 // Once per CREATE operation & contract-creation transaction.
	Create2Gas            uint64 = 32000 // Once per CREATE2 operation
	SelfdestructRefundGas uint64 = 24000 // Refunded following a selfdestruct operation.
	MemoryGas             uint64 = 3     // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL.

	TxDataNonZeroGasFrontier  uint64 = 68   // Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions.
	TxDataNonZeroGasEIP2028   uint64 = 16   // Per byte of non zero data attached to a transaction after EIP 2028 (part in Istanbul)
	TxAccessListAddressGas    uint64 = 2400 // Per address specified in EIP 2930 access list
	TxAccessListStorageKeyGas uint64 = 1900 // Per storage key specified in EIP 2930 access list

	// These have been changed during the course of the chain
	CallGasFrontier              uint64 = 40  // Once per CALL operation & message call transaction.
	CallGasEIP150                uint64 = 700 // Static portion of gas for CALL-derivates after EIP 150 (Tangerine)
	BalanceGasFrontier           uint64 = 20  // The cost of a BALANCE operation
	BalanceGasEIP150             uint64 = 400 // The cost of a BALANCE operation after Tangerine
	BalanceGasEIP1884            uint64 = 700 // The cost of a BALANCE operation after EIP 1884 (part of Istanbul)
	ExtcodeSizeGasFrontier       uint64 = 20  // Cost of EXTCODESIZE before EIP 150 (Tangerine)
	ExtcodeSizeGasEIP150         uint64 = 700 // Cost of EXTCODESIZE after EIP 150 (Tangerine)
	SloadGasFrontier             uint64 = 50
	SloadGasEIP150               uint64 = 200
	SloadGasEIP1884              uint64 = 800  // Cost of SLOAD after EIP 1884 (part of Istanbul)
	SloadGasEIP2200              uint64 = 800  // Cost of SLOAD after EIP 2200 (part of Istanbul)
	ExtcodeHashGasConstantinople uint64 = 400  // Cost of EXTCODEHASH (introduced in Constantinople)
	ExtcodeHashGasEIP1884        uint64 = 700  // Cost of EXTCODEHASH after EIP 1884 (part in Istanbul)
	SelfdestructGasEIP150        uint64 = 5000 // Cost of SELFDESTRUCT post EIP 150 (Tangerine)

	// EXP has a dynamic portion depending on the size of the exponent
	ExpByteFrontier uint64 = 10 // was set to 10 in Frontier
	ExpByteEIP158   uint64 = 50 // was raised to 50 during Eip158 (Spurious Dragon)

	// Extcodecopy has a dynamic AND a static cost. This represents only the
	// static portion of the gas. It was changed during EIP 150 (Tangerine)
	ExtcodeCopyBaseFrontier uint64 = 20
	ExtcodeCopyBaseEIP150   uint64 = 700

	// CreateBySelfdestructGas is used when the refunded account is one that does
	// not exist. This logic is similar to call.
	// Introduced in Tangerine Whistle (Eip 150)
	CreateBySelfdestructGas uint64 = 25000

	DefaultBaseFeeChangeDenominator = 8          // Bounds the amount the base fee can change between blocks.
	DefaultElasticityMultiplier     = 2          // Bounds the maximum gas limit an EIP-1559 block may have.
	InitialBaseFee                  = 1000000000 // Initial base fee for EIP-1559 blocks.

	MaxCodeSize     = 24576           // Maximum bytecode to permit for a contract
	MaxInitCodeSize = 2 * MaxCodeSize // Maximum initcode to permit in a creation transaction and create instructions

	EcrecoverGas        uint64 = 3000 // Elliptic curve sender recovery gas price
	Sha256BaseGas       uint64 = 60   // Base price for a SHA256 operation
	Sha256PerWordGas    uint64 = 12   // Per-word price for a SHA256 operation
	Ripemd160BaseGas    uint64 = 600  // Base price for a RIPEMD160 operation
	Ripemd160PerWordGas uint64 = 120  // Per-word price for a RIPEMD160 operation
	IdentityBaseGas     uint64 = 15   // Base price for a data copy operation
	IdentityPerWordGas  uint64 = 3    // Per-work price for a data copy operation

	Bn256AddGasByzantium             uint64 = 500    // Byzantium gas needed for an elliptic curve addition
	Bn256AddGasIstanbul              uint64 = 150    // Gas needed for an elliptic curve addition
	Bn256ScalarMulGasByzantium       uint64 = 40000  // Byzantium gas needed for an elliptic curve scalar multiplication
	Bn256ScalarMulGasIstanbul        uint64 = 6000   // Gas needed for an elliptic curve scalar multiplication
	Bn256PairingBaseGasByzantium     uint64 = 100000 // Byzantium base price for an elliptic curve pairing check
	Bn256PairingBaseGasIstanbul      uint64 = 45000  // Base price for an elliptic curve pairing check
	Bn256PairingPerPointGasByzantium uint64 = 80000  // Byzantium per-point price for an elliptic curve pairing check
	Bn256PairingPerPointGasIstanbul  uint64 = 34000  // Per-point price for an elliptic curve pairing check

	Bls12381G1AddGas          uint64 = 600    // Price for BLS12-381 elliptic curve G1 point addition
	Bls12381G1MulGas          uint64 = 12000  // Price for BLS12-381 elliptic curve G1 point scalar multiplication
	Bls12381G2AddGas          uint64 = 4500   // Price for BLS12-381 elliptic curve G2 point addition
	Bls12381G2MulGas          uint64 = 55000  // Price for BLS12-381 elliptic curve G2 point scalar multiplication
	Bls12381PairingBaseGas    uint64 = 115000 // Base gas price for BLS12-381 elliptic curve pairing check
	Bls12381PairingPerPairGas uint64 = 23000  // Per-point pair gas price for BLS12-381 elliptic curve pairing check
	Bls12381MapG1Gas          uint64 = 5500   // Gas price for BLS12-381 mapping field element to G1 operation
	Bls12381MapG2Gas          uint64 = 110000 // Gas price for BLS12-381 mapping field element to G2 operation

	// The Refund Quotient is the cap on how much of the used gas can be refunded. Before EIP-3529,
	// up to half the consumed gas could be refunded. Redefined as 1/5th in EIP-3529
	RefundQuotient        uint64 = 2
	RefundQuotientEIP3529 uint64 = 5

	BlobTxBytesPerFieldElement         = 32      // Size in bytes of a field element
	BlobTxFieldElementsPerBlob         = 4096    // Number of field elements stored in a single data blob
	BlobTxBlobGasPerBlob               = 1 << 17 // Gas consumption of a single data blob (== blob byte size)
	BlobTxMinBlobGasprice              = 1       // Minimum gas price for data blobs
	BlobTxBlobGaspriceUpdateFraction   = 3338477 // Controls the maximum rate of change for blob gas price
	BlobTxPointEvaluationPrecompileGas = 50000   // Gas price for the point evaluation precompile.

	BlobTxTargetBlobGasPerBlock = 3 * BlobTxBlobGasPerBlob // Target consumable blob gas for data blobs per block (for 1559-like pricing)
	MaxBlobGasPerBlock          = 6 * BlobTxBlobGasPerBlob // Maximum consumable blob gas for data blobs per block
)
View Source 
const (
	VersionMajor = 1        // Major version component of the current release
	VersionMinor = 13       // Minor version component of the current release
	VersionPatch = 14       // Patch version component of the current release
	VersionMeta  = "stable" // Version metadata to append to the version string
)

Variables

View Source 
var (
	MainnetGenesisHash = common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3")
	HoleskyGenesisHash = common.HexToHash("0xb5f7f912443c940f21fd611f12828d75b534364ed9e95ca4e307729a4661bde4")
	SepoliaGenesisHash = common.HexToHash("0x25a5cc106eea7138acab33231d7160d69cb777ee0c2c553fcddf5138993e6dd9")
	GoerliGenesisHash  = common.HexToHash("0xbf7e331f7f7c1dd2e05159666b3bf8bc7a8a3a9eb1d518969eab529dd9b88c1a")
)

Genesis hashes to enforce below configs on.

View Source 
var (
	MainnetTerminalTotalDifficulty, _ = new(big.Int).SetString("58_750_000_000_000_000_000_000", 0)

	// MainnetChainConfig is the chain parameters to run a node on the main network.
	MainnetChainConfig = &ChainConfig{
		ChainID:                       big.NewInt(1),
		HomesteadBlock:                big.NewInt(1_150_000),
		DAOForkBlock:                  big.NewInt(1_920_000),
		DAOForkSupport:                true,
		EIP150Block:                   big.NewInt(2_463_000),
		EIP155Block:                   big.NewInt(2_675_000),
		EIP158Block:                   big.NewInt(2_675_000),
		ByzantiumBlock:                big.NewInt(4_370_000),
		ConstantinopleBlock:           big.NewInt(7_280_000),
		PetersburgBlock:               big.NewInt(7_280_000),
		IstanbulBlock:                 big.NewInt(9_069_000),
		MuirGlacierBlock:              big.NewInt(9_200_000),
		BerlinBlock:                   big.NewInt(12_244_000),
		LondonBlock:                   big.NewInt(12_965_000),
		ArrowGlacierBlock:             big.NewInt(13_773_000),
		GrayGlacierBlock:              big.NewInt(15_050_000),
		TerminalTotalDifficulty:       MainnetTerminalTotalDifficulty,
		TerminalTotalDifficultyPassed: true,
		ShanghaiTime:                  newUint64(1681338455),
		CancunTime:                    newUint64(1710338135),
		Ethash:                        new(EthashConfig),
	}
	// HoleskyChainConfig contains the chain parameters to run a node on the Holesky test network.
	HoleskyChainConfig = &ChainConfig{
		ChainID:                       big.NewInt(17000),
		HomesteadBlock:                big.NewInt(0),
		DAOForkBlock:                  nil,
		DAOForkSupport:                true,
		EIP150Block:                   big.NewInt(0),
		EIP155Block:                   big.NewInt(0),
		EIP158Block:                   big.NewInt(0),
		ByzantiumBlock:                big.NewInt(0),
		ConstantinopleBlock:           big.NewInt(0),
		PetersburgBlock:               big.NewInt(0),
		IstanbulBlock:                 big.NewInt(0),
		MuirGlacierBlock:              nil,
		BerlinBlock:                   big.NewInt(0),
		LondonBlock:                   big.NewInt(0),
		ArrowGlacierBlock:             nil,
		GrayGlacierBlock:              nil,
		TerminalTotalDifficulty:       big.NewInt(0),
		TerminalTotalDifficultyPassed: true,
		MergeNetsplitBlock:            nil,
		ShanghaiTime:                  newUint64(1696000704),
		CancunTime:                    newUint64(1707305664),
		Ethash:                        new(EthashConfig),
	}
	// SepoliaChainConfig contains the chain parameters to run a node on the Sepolia test network.
	SepoliaChainConfig = &ChainConfig{
		ChainID:                       big.NewInt(11155111),
		HomesteadBlock:                big.NewInt(0),
		DAOForkBlock:                  nil,
		DAOForkSupport:                true,
		EIP150Block:                   big.NewInt(0),
		EIP155Block:                   big.NewInt(0),
		EIP158Block:                   big.NewInt(0),
		ByzantiumBlock:                big.NewInt(0),
		ConstantinopleBlock:           big.NewInt(0),
		PetersburgBlock:               big.NewInt(0),
		IstanbulBlock:                 big.NewInt(0),
		MuirGlacierBlock:              big.NewInt(0),
		BerlinBlock:                   big.NewInt(0),
		LondonBlock:                   big.NewInt(0),
		ArrowGlacierBlock:             nil,
		GrayGlacierBlock:              nil,
		TerminalTotalDifficulty:       big.NewInt(17_000_000_000_000_000),
		TerminalTotalDifficultyPassed: true,
		MergeNetsplitBlock:            big.NewInt(1735371),
		ShanghaiTime:                  newUint64(1677557088),
		CancunTime:                    newUint64(1706655072),
		Ethash:                        new(EthashConfig),
	}
	// GoerliChainConfig contains the chain parameters to run a node on the Görli test network.
	GoerliChainConfig = &ChainConfig{
		ChainID:                       big.NewInt(5),
		HomesteadBlock:                big.NewInt(0),
		DAOForkBlock:                  nil,
		DAOForkSupport:                true,
		EIP150Block:                   big.NewInt(0),
		EIP155Block:                   big.NewInt(0),
		EIP158Block:                   big.NewInt(0),
		ByzantiumBlock:                big.NewInt(0),
		ConstantinopleBlock:           big.NewInt(0),
		PetersburgBlock:               big.NewInt(0),
		IstanbulBlock:                 big.NewInt(1_561_651),
		MuirGlacierBlock:              nil,
		BerlinBlock:                   big.NewInt(4_460_644),
		LondonBlock:                   big.NewInt(5_062_605),
		ArrowGlacierBlock:             nil,
		TerminalTotalDifficulty:       big.NewInt(10_790_000),
		TerminalTotalDifficultyPassed: true,
		ShanghaiTime:                  newUint64(1678832736),
		CancunTime:                    newUint64(1705473120),
		Clique: &CliqueConfig{
			Period: 15,
			Epoch:  30000,
		},
	}
	// AllEthashProtocolChanges contains every protocol change (EIPs) introduced
	// and accepted by the Ethereum core developers into the Ethash consensus.
	AllEthashProtocolChanges = &ChainConfig{
		ChainID:                       big.NewInt(1337),
		HomesteadBlock:                big.NewInt(0),
		DAOForkBlock:                  nil,
		DAOForkSupport:                false,
		EIP150Block:                   big.NewInt(0),
		EIP155Block:                   big.NewInt(0),
		EIP158Block:                   big.NewInt(0),
		ByzantiumBlock:                big.NewInt(0),
		ConstantinopleBlock:           big.NewInt(0),
		PetersburgBlock:               big.NewInt(0),
		IstanbulBlock:                 big.NewInt(0),
		MuirGlacierBlock:              big.NewInt(0),
		BerlinBlock:                   big.NewInt(0),
		LondonBlock:                   big.NewInt(0),
		ArrowGlacierBlock:             big.NewInt(0),
		GrayGlacierBlock:              big.NewInt(0),
		MergeNetsplitBlock:            nil,
		ShanghaiTime:                  nil,
		CancunTime:                    nil,
		PragueTime:                    nil,
		VerkleTime:                    nil,
		TerminalTotalDifficulty:       nil,
		TerminalTotalDifficultyPassed: true,
		Ethash:                        new(EthashConfig),
		Clique:                        nil,
	}

	AllDevChainProtocolChanges = &ChainConfig{
		ChainID:                       big.NewInt(1337),
		HomesteadBlock:                big.NewInt(0),
		EIP150Block:                   big.NewInt(0),
		EIP155Block:                   big.NewInt(0),
		EIP158Block:                   big.NewInt(0),
		ByzantiumBlock:                big.NewInt(0),
		ConstantinopleBlock:           big.NewInt(0),
		PetersburgBlock:               big.NewInt(0),
		IstanbulBlock:                 big.NewInt(0),
		MuirGlacierBlock:              big.NewInt(0),
		BerlinBlock:                   big.NewInt(0),
		LondonBlock:                   big.NewInt(0),
		ArrowGlacierBlock:             big.NewInt(0),
		GrayGlacierBlock:              big.NewInt(0),
		ShanghaiTime:                  newUint64(0),
		TerminalTotalDifficulty:       big.NewInt(0),
		TerminalTotalDifficultyPassed: true,
	}

	// AllCliqueProtocolChanges contains every protocol change (EIPs) introduced
	// and accepted by the Ethereum core developers into the Clique consensus.
	AllCliqueProtocolChanges = &ChainConfig{
		ChainID:                       big.NewInt(1337),
		HomesteadBlock:                big.NewInt(0),
		DAOForkBlock:                  nil,
		DAOForkSupport:                false,
		EIP150Block:                   big.NewInt(0),
		EIP155Block:                   big.NewInt(0),
		EIP158Block:                   big.NewInt(0),
		ByzantiumBlock:                big.NewInt(0),
		ConstantinopleBlock:           big.NewInt(0),
		PetersburgBlock:               big.NewInt(0),
		IstanbulBlock:                 big.NewInt(0),
		MuirGlacierBlock:              big.NewInt(0),
		BerlinBlock:                   big.NewInt(0),
		LondonBlock:                   big.NewInt(0),
		ArrowGlacierBlock:             nil,
		GrayGlacierBlock:              nil,
		MergeNetsplitBlock:            nil,
		ShanghaiTime:                  nil,
		CancunTime:                    nil,
		PragueTime:                    nil,
		VerkleTime:                    nil,
		TerminalTotalDifficulty:       nil,
		TerminalTotalDifficultyPassed: false,
		Ethash:                        nil,
		Clique:                        &CliqueConfig{Period: 0, Epoch: 30000},
	}

	// TestChainConfig contains every protocol change (EIPs) introduced
	// and accepted by the Ethereum core developers for testing purposes.
	TestChainConfig = &ChainConfig{
		ChainID:                       big.NewInt(1),
		HomesteadBlock:                big.NewInt(0),
		DAOForkBlock:                  nil,
		DAOForkSupport:                false,
		EIP150Block:                   big.NewInt(0),
		EIP155Block:                   big.NewInt(0),
		EIP158Block:                   big.NewInt(0),
		ByzantiumBlock:                big.NewInt(0),
		ConstantinopleBlock:           big.NewInt(0),
		PetersburgBlock:               big.NewInt(0),
		IstanbulBlock:                 big.NewInt(0),
		MuirGlacierBlock:              big.NewInt(0),
		BerlinBlock:                   big.NewInt(0),
		LondonBlock:                   big.NewInt(0),
		ArrowGlacierBlock:             big.NewInt(0),
		GrayGlacierBlock:              big.NewInt(0),
		MergeNetsplitBlock:            nil,
		ShanghaiTime:                  nil,
		CancunTime:                    nil,
		PragueTime:                    nil,
		VerkleTime:                    nil,
		TerminalTotalDifficulty:       nil,
		TerminalTotalDifficultyPassed: false,
		Ethash:                        new(EthashConfig),
		Clique:                        nil,
	}

	// MergedTestChainConfig contains every protocol change (EIPs) introduced
	// and accepted by the Ethereum core developers for testing purposes.
	MergedTestChainConfig = &ChainConfig{
		ChainID:                       big.NewInt(1),
		HomesteadBlock:                big.NewInt(0),
		DAOForkBlock:                  nil,
		DAOForkSupport:                false,
		EIP150Block:                   big.NewInt(0),
		EIP155Block:                   big.NewInt(0),
		EIP158Block:                   big.NewInt(0),
		ByzantiumBlock:                big.NewInt(0),
		ConstantinopleBlock:           big.NewInt(0),
		PetersburgBlock:               big.NewInt(0),
		IstanbulBlock:                 big.NewInt(0),
		MuirGlacierBlock:              big.NewInt(0),
		BerlinBlock:                   big.NewInt(0),
		LondonBlock:                   big.NewInt(0),
		ArrowGlacierBlock:             big.NewInt(0),
		GrayGlacierBlock:              big.NewInt(0),
		MergeNetsplitBlock:            big.NewInt(0),
		ShanghaiTime:                  newUint64(0),
		CancunTime:                    newUint64(0),
		PragueTime:                    nil,
		VerkleTime:                    nil,
		TerminalTotalDifficulty:       big.NewInt(0),
		TerminalTotalDifficultyPassed: true,
		Ethash:                        new(EthashConfig),
		Clique:                        nil,
	}

	// NonActivatedConfig defines the chain configuration without activating
	// any protocol change (EIPs).
	NonActivatedConfig = &ChainConfig{
		ChainID:                       big.NewInt(1),
		HomesteadBlock:                nil,
		DAOForkBlock:                  nil,
		DAOForkSupport:                false,
		EIP150Block:                   nil,
		EIP155Block:                   nil,
		EIP158Block:                   nil,
		ByzantiumBlock:                nil,
		ConstantinopleBlock:           nil,
		PetersburgBlock:               nil,
		IstanbulBlock:                 nil,
		MuirGlacierBlock:              nil,
		BerlinBlock:                   nil,
		LondonBlock:                   nil,
		ArrowGlacierBlock:             nil,
		GrayGlacierBlock:              nil,
		MergeNetsplitBlock:            nil,
		ShanghaiTime:                  nil,
		CancunTime:                    nil,
		PragueTime:                    nil,
		VerkleTime:                    nil,
		TerminalTotalDifficulty:       nil,
		TerminalTotalDifficultyPassed: false,
		Ethash:                        new(EthashConfig),
		Clique:                        nil,
	}
	TestRules = TestChainConfig.Rules(new(big.Int), false, 0)
)
View Source 
var (
	DifficultyBoundDivisor = big.NewInt(2048)   // The bound divisor of the difficulty, used in the update calculations.
	GenesisDifficulty      = big.NewInt(131072) // Difficulty of the Genesis block.
	MinimumDifficulty      = big.NewInt(131072) // The minimum that the difficulty may ever be.
	DurationLimit          = big.NewInt(13)     // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not.

	// BeaconRootsStorageAddress is the address where historical beacon roots are stored as per EIP-4788
	BeaconRootsStorageAddress = common.HexToAddress("0x000F3df6D732807Ef1319fB7B8bB8522d0Beac02")
	// SystemAddress is where the system-transaction is sent from as per EIP-4788
	SystemAddress common.Address = common.HexToAddress("0xfffffffffffffffffffffffffffffffffffffffe")
)
View Source 
var Bls12381MultiExpDiscountTable = [128]uint64{} /* 128 elements not displayed */

Gas discount table for BLS12-381 G1 and G2 multi exponentiation operations

View Source 
var DAOForkBlockExtra = common.FromHex("0x64616f2d686172642d666f726b")

DAOForkBlockExtra is the block header extra-data field to set for the DAO fork point and a number of consecutive blocks to allow fast/light syncers to correctly pick the side they want ("dao-hard-fork").

View Source 
var DAOForkExtraRange = big.NewInt(10)

DAOForkExtraRange is the number of consecutive blocks from the DAO fork point to override the extra-data in to prevent no-fork attacks.

View Source 
var DAORefundContract = common.HexToAddress("0xbf4ed7b27f1d666546e30d74d50d173d20bca754")

DAORefundContract is the address of the refund contract to send DAO balances to.

View Source 
var GoerliBootnodes = []string{

	"enode://011f758e6552d105183b1761c5e2dea0111bc20fd5f6422bc7f91e0fabbec9a6595caf6239b37feb773dddd3f87240d99d859431891e4a642cf2a0a9e6cbb98a@51.141.78.53:30303",
	"enode://176b9417f511d05b6b2cf3e34b756cf0a7096b3094572a8f6ef4cdcb9d1f9d00683bf0f83347eebdf3b81c3521c2332086d9592802230bf528eaf606a1d9677b@13.93.54.137:30303",
	"enode://46add44b9f13965f7b9875ac6b85f016f341012d84f975377573800a863526f4da19ae2c620ec73d11591fa9510e992ecc03ad0751f53cc02f7c7ed6d55c7291@94.237.54.114:30313",
	"enode://b5948a2d3e9d486c4d75bf32713221c2bd6cf86463302339299bd227dc2e276cd5a1c7ca4f43a0e9122fe9af884efed563bd2a1fd28661f3b5f5ad7bf1de5949@18.218.250.66:30303",

	"enode://a61215641fb8714a373c80edbfa0ea8878243193f57c96eeb44d0bc019ef295abd4e044fd619bfc4c59731a73fb79afe84e9ab6da0c743ceb479cbb6d263fa91@3.11.147.67:30303",

	"enode://d4f764a48ec2a8ecf883735776fdefe0a3949eb0ca476bd7bc8d0954a9defe8fea15ae5da7d40b5d2d59ce9524a99daedadf6da6283fca492cc80b53689fb3b3@46.4.99.122:32109",
	"enode://d2b720352e8216c9efc470091aa91ddafc53e222b32780f505c817ceef69e01d5b0b0797b69db254c586f493872352f5a022b4d8479a00fc92ec55f9ad46a27e@88.99.70.182:30303",
}

GoerliBootnodes are the enode URLs of the P2P bootstrap nodes running on the Görli test network.

View Source 
var HoleskyBootnodes = []string{

	"enode://ac906289e4b7f12df423d654c5a962b6ebe5b3a74cc9e06292a85221f9a64a6f1cfdd6b714ed6dacef51578f92b34c60ee91e9ede9c7f8fadc4d347326d95e2b@146.190.13.128:30303",
	"enode://a3435a0155a3e837c02f5e7f5662a2f1fbc25b48e4dc232016e1c51b544cb5b4510ef633ea3278c0e970fa8ad8141e2d4d0f9f95456c537ff05fdf9b31c15072@178.128.136.233:30303",
}

HoleskyBootnodes are the enode URLs of the P2P bootstrap nodes running on the Holesky test network.

View Source 
var MainnetBootnodes = []string{

	"enode://d860a01f9722d78051619d1e2351aba3f43f943f6f00718d1b9baa4101932a1f5011f16bb2b1bb35db20d6fe28fa0bf09636d26a87d31de9ec6203eeedb1f666@18.138.108.67:30303",
	"enode://22a8232c3abc76a16ae9d6c3b164f98775fe226f0917b0ca871128a74a8e9630b458460865bab457221f1d448dd9791d24c4e5d88786180ac185df813a68d4de@3.209.45.79:30303",
	"enode://2b252ab6a1d0f971d9722cb839a42cb81db019ba44c08754628ab4a823487071b5695317c8ccd085219c3a03af063495b2f1da8d18218da2d6a82981b45e6ffc@65.108.70.101:30303",
	"enode://4aeb4ab6c14b23e2c4cfdce879c04b0748a20d8e9b59e25ded2a08143e265c6c25936e74cbc8e641e3312ca288673d91f2f93f8e277de3cfa444ecdaaf982052@157.90.35.166:30303",
}

MainnetBootnodes are the enode URLs of the P2P bootstrap nodes running on the main Ethereum network.

View Source 
var NetworkNames = map[string]string{
	MainnetChainConfig.ChainID.String(): "mainnet",
	GoerliChainConfig.ChainID.String():  "goerli",
	SepoliaChainConfig.ChainID.String(): "sepolia",
	HoleskyChainConfig.ChainID.String(): "holesky",
}

NetworkNames are user friendly names to use in the chain spec banner.

View Source 
var SepoliaBootnodes = []string{

	"enode://4e5e92199ee224a01932a377160aa432f31d0b351f84ab413a8e0a42f4f36476f8fb1cbe914af0d9aef0d51665c214cf653c651c4bbd9d5550a934f241f1682b@138.197.51.181:30303",
	"enode://143e11fb766781d22d92a2e33f8f104cddae4411a122295ed1fdb6638de96a6ce65f5b7c964ba3763bba27961738fef7d3ecc739268f3e5e771fb4c87b6234ba@146.190.1.103:30303",
	"enode://8b61dc2d06c3f96fddcbebb0efb29d60d3598650275dc469c22229d3e5620369b0d3dedafd929835fe7f489618f19f456fe7c0df572bf2d914a9f4e006f783a9@170.64.250.88:30303",
	"enode://10d62eff032205fcef19497f35ca8477bea0eadfff6d769a147e895d8b2b8f8ae6341630c645c30f5df6e67547c03494ced3d9c5764e8622a26587b083b028e8@139.59.49.206:30303",
	"enode://9e9492e2e8836114cc75f5b929784f4f46c324ad01daf87d956f98b3b6c5fcba95524d6e5cf9861dc96a2c8a171ea7105bb554a197455058de185fa870970c7c@138.68.123.152:30303",
}

SepoliaBootnodes are the enode URLs of the P2P bootstrap nodes running on the Sepolia test network.

View Source 
var V5Bootnodes = []string{

	"enr:-KG4QMOEswP62yzDjSwWS4YEjtTZ5PO6r65CPqYBkgTTkrpaedQ8uEUo1uMALtJIvb2w_WWEVmg5yt1UAuK1ftxUU7QDhGV0aDKQu6TalgMAAAD__________4JpZIJ2NIJpcIQEnfA2iXNlY3AyNTZrMaEDfol8oLr6XJ7FsdAYE7lpJhKMls4G_v6qQOGKJUWGb_uDdGNwgiMog3VkcIIjKA",
	"enr:-KG4QF4B5WrlFcRhUU6dZETwY5ZzAXnA0vGC__L1Kdw602nDZwXSTs5RFXFIFUnbQJmhNGVU6OIX7KVrCSTODsz1tK4DhGV0aDKQu6TalgMAAAD__________4JpZIJ2NIJpcIQExNYEiXNlY3AyNTZrMaECQmM9vp7KhaXhI-nqL_R0ovULLCFSFTa9CPPSdb1zPX6DdGNwgiMog3VkcIIjKA",

	"enr:-Ku4QImhMc1z8yCiNJ1TyUxdcfNucje3BGwEHzodEZUan8PherEo4sF7pPHPSIB1NNuSg5fZy7qFsjmUKs2ea1Whi0EBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpD1pf1CAAAAAP__________gmlkgnY0gmlwhBLf22SJc2VjcDI1NmsxoQOVphkDqal4QzPMksc5wnpuC3gvSC8AfbFOnZY_On34wIN1ZHCCIyg",
	"enr:-Ku4QP2xDnEtUXIjzJ_DhlCRN9SN99RYQPJL92TMlSv7U5C1YnYLjwOQHgZIUXw6c-BvRg2Yc2QsZxxoS_pPRVe0yK8Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpD1pf1CAAAAAP__________gmlkgnY0gmlwhBLf22SJc2VjcDI1NmsxoQMeFF5GrS7UZpAH2Ly84aLK-TyvH-dRo0JM1i8yygH50YN1ZHCCJxA",
	"enr:-Ku4QPp9z1W4tAO8Ber_NQierYaOStqhDqQdOPY3bB3jDgkjcbk6YrEnVYIiCBbTxuar3CzS528d2iE7TdJsrL-dEKoBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpD1pf1CAAAAAP__________gmlkgnY0gmlwhBLf22SJc2VjcDI1NmsxoQMw5fqqkw2hHC4F5HZZDPsNmPdB1Gi8JPQK7pRc9XHh-oN1ZHCCKvg",

	"enr:-Le4QPUXJS2BTORXxyx2Ia-9ae4YqA_JWX3ssj4E_J-3z1A-HmFGrU8BpvpqhNabayXeOZ2Nq_sbeDgtzMJpLLnXFgAChGV0aDKQtTA_KgEAAAAAIgEAAAAAAIJpZIJ2NIJpcISsaa0Zg2lwNpAkAIkHAAAAAPA8kv_-awoTiXNlY3AyNTZrMaEDHAD2JKYevx89W0CcFJFiskdcEzkH_Wdv9iW42qLK79ODdWRwgiMohHVkcDaCI4I",
	"enr:-Le4QLHZDSvkLfqgEo8IWGG96h6mxwe_PsggC20CL3neLBjfXLGAQFOPSltZ7oP6ol54OvaNqO02Rnvb8YmDR274uq8ChGV0aDKQtTA_KgEAAAAAIgEAAAAAAIJpZIJ2NIJpcISLosQxg2lwNpAqAX4AAAAAAPA8kv_-ax65iXNlY3AyNTZrMaEDBJj7_dLFACaxBfaI8KZTh_SSJUjhyAyfshimvSqo22WDdWRwgiMohHVkcDaCI4I",
	"enr:-Le4QH6LQrusDbAHPjU_HcKOuMeXfdEB5NJyXgHWFadfHgiySqeDyusQMvfphdYWOzuSZO9Uq2AMRJR5O4ip7OvVma8BhGV0aDKQtTA_KgEAAAAAIgEAAAAAAIJpZIJ2NIJpcISLY9ncg2lwNpAkAh8AgQIBAAAAAAAAAAmXiXNlY3AyNTZrMaECDYCZTZEksF-kmgPholqgVt8IXr-8L7Nu7YrZ7HUpgxmDdWRwgiMohHVkcDaCI4I",
	"enr:-Le4QIqLuWybHNONr933Lk0dcMmAB5WgvGKRyDihy1wHDIVlNuuztX62W51voT4I8qD34GcTEOTmag1bcdZ_8aaT4NUBhGV0aDKQtTA_KgEAAAAAIgEAAAAAAIJpZIJ2NIJpcISLY04ng2lwNpAkAh8AgAIBAAAAAAAAAA-fiXNlY3AyNTZrMaEDscnRV6n1m-D9ID5UsURk0jsoKNXt1TIrj8uKOGW6iluDdWRwgiMohHVkcDaCI4I",

	"enr:-Ku4QHqVeJ8PPICcWk1vSn_XcSkjOkNiTg6Fmii5j6vUQgvzMc9L1goFnLKgXqBJspJjIsB91LTOleFmyWWrFVATGngBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhAMRHkWJc2VjcDI1NmsxoQKLVXFOhp2uX6jeT0DvvDpPcU8FWMjQdR4wMuORMhpX24N1ZHCCIyg",
	"enr:-Ku4QG-2_Md3sZIAUebGYT6g0SMskIml77l6yR-M_JXc-UdNHCmHQeOiMLbylPejyJsdAPsTHJyjJB2sYGDLe0dn8uYBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhBLY-NyJc2VjcDI1NmsxoQORcM6e19T1T9gi7jxEZjk_sjVLGFscUNqAY9obgZaxbIN1ZHCCIyg",
	"enr:-Ku4QPn5eVhcoF1opaFEvg1b6JNFD2rqVkHQ8HApOKK61OIcIXD127bKWgAtbwI7pnxx6cDyk_nI88TrZKQaGMZj0q0Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhDayLMaJc2VjcDI1NmsxoQK2sBOLGcUb4AwuYzFuAVCaNHA-dy24UuEKkeFNgCVCsIN1ZHCCIyg",
	"enr:-Ku4QEWzdnVtXc2Q0ZVigfCGggOVB2Vc1ZCPEc6j21NIFLODSJbvNaef1g4PxhPwl_3kax86YPheFUSLXPRs98vvYsoBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhDZBrP2Jc2VjcDI1NmsxoQM6jr8Rb1ktLEsVcKAPa08wCsKUmvoQ8khiOl_SLozf9IN1ZHCCIyg",

	"enr:-LK4QA8FfhaAjlb_BXsXxSfiysR7R52Nhi9JBt4F8SPssu8hdE1BXQQEtVDC3qStCW60LSO7hEsVHv5zm8_6Vnjhcn0Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhAN4aBKJc2VjcDI1NmsxoQJerDhsJ-KxZ8sHySMOCmTO6sHM3iCFQ6VMvLTe948MyYN0Y3CCI4yDdWRwgiOM",
	"enr:-LK4QKWrXTpV9T78hNG6s8AM6IO4XH9kFT91uZtFg1GcsJ6dKovDOr1jtAAFPnS2lvNltkOGA9k29BUN7lFh_sjuc9QBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhANAdd-Jc2VjcDI1NmsxoQLQa6ai7y9PMN5hpLe5HmiJSlYzMuzP7ZhwRiwHvqNXdoN0Y3CCI4yDdWRwgiOM",
}
View Source 
var Version = func() string {
	return fmt.Sprintf("%d.%d.%d", VersionMajor, VersionMinor, VersionPatch)
}()

Version holds the textual version string.

View Source 
var VersionWithMeta = func() string {
	v := Version
	if VersionMeta != "" {
		v += "-" + VersionMeta
	}
	return v
}()

VersionWithMeta holds the textual version string including the metadata.

Functions

func ArchiveVersion 

func ArchiveVersion(gitCommit string) string

ArchiveVersion holds the textual version string used for Geth archives. e.g. "1.8.11-dea1ce05" for stable releases, or "1.8.13-unstable-21c059b6" for unstable releases.

func DAODrainList 

func DAODrainList() []common.Address

DAODrainList is the list of accounts whose full balances will be moved into a refund contract at the beginning of the dao-fork block.

func KnownDNSNetwork 

func KnownDNSNetwork(genesis common.Hash, protocol string) string

KnownDNSNetwork returns the address of a public DNS-based node list for the given genesis hash and protocol. See https://github.com/ethereum/discv4-dns-lists for more information.

func TestOnlyClearRegisteredExtras 

func TestOnlyClearRegisteredExtras()

TestOnlyClearRegisteredExtras clears the Extras previously passed to RegisterExtras. It panics if called from a non-testing call stack.

In tests it SHOULD be called before every call to RegisterExtras and then defer-called afterwards, either directly or via testing.TB.Cleanup(). This is a workaround for the single-call limitation on RegisterExtras.

func VersionWithCommit 

func VersionWithCommit(gitCommit, gitDate string) string

Types

type ChainConfig 

type ChainConfig struct {
	ChainID *big.Int `json:"chainId"` // chainId identifies the current chain and is used for replay protection

	HomesteadBlock *big.Int `json:"homesteadBlock,omitempty"` // Homestead switch block (nil = no fork, 0 = already homestead)

	DAOForkBlock   *big.Int `json:"daoForkBlock,omitempty"`   // TheDAO hard-fork switch block (nil = no fork)
	DAOForkSupport bool     `json:"daoForkSupport,omitempty"` // Whether the nodes supports or opposes the DAO hard-fork

	// EIP150 implements the Gas price changes (https://github.com/ethereum/EIPs/issues/150)
	EIP150Block *big.Int `json:"eip150Block,omitempty"` // EIP150 HF block (nil = no fork)
	EIP155Block *big.Int `json:"eip155Block,omitempty"` // EIP155 HF block
	EIP158Block *big.Int `json:"eip158Block,omitempty"` // EIP158 HF block

	ByzantiumBlock      *big.Int `json:"byzantiumBlock,omitempty"`      // Byzantium switch block (nil = no fork, 0 = already on byzantium)
	ConstantinopleBlock *big.Int `json:"constantinopleBlock,omitempty"` // Constantinople switch block (nil = no fork, 0 = already activated)
	PetersburgBlock     *big.Int `json:"petersburgBlock,omitempty"`     // Petersburg switch block (nil = same as Constantinople)
	IstanbulBlock       *big.Int `json:"istanbulBlock,omitempty"`       // Istanbul switch block (nil = no fork, 0 = already on istanbul)
	MuirGlacierBlock    *big.Int `json:"muirGlacierBlock,omitempty"`    // Eip-2384 (bomb delay) switch block (nil = no fork, 0 = already activated)
	BerlinBlock         *big.Int `json:"berlinBlock,omitempty"`         // Berlin switch block (nil = no fork, 0 = already on berlin)
	LondonBlock         *big.Int `json:"londonBlock,omitempty"`         // London switch block (nil = no fork, 0 = already on london)
	ArrowGlacierBlock   *big.Int `json:"arrowGlacierBlock,omitempty"`   // Eip-4345 (bomb delay) switch block (nil = no fork, 0 = already activated)
	GrayGlacierBlock    *big.Int `json:"grayGlacierBlock,omitempty"`    // Eip-5133 (bomb delay) switch block (nil = no fork, 0 = already activated)
	MergeNetsplitBlock  *big.Int `json:"mergeNetsplitBlock,omitempty"`  // Virtual fork after The Merge to use as a network splitter

	ShanghaiTime *uint64 `json:"shanghaiTime,omitempty"` // Shanghai switch time (nil = no fork, 0 = already on shanghai)
	CancunTime   *uint64 `json:"cancunTime,omitempty"`   // Cancun switch time (nil = no fork, 0 = already on cancun)
	PragueTime   *uint64 `json:"pragueTime,omitempty"`   // Prague switch time (nil = no fork, 0 = already on prague)
	VerkleTime   *uint64 `json:"verkleTime,omitempty"`   // Verkle switch time (nil = no fork, 0 = already on verkle)

	// TerminalTotalDifficulty is the amount of total difficulty reached by
	// the network that triggers the consensus upgrade.
	TerminalTotalDifficulty *big.Int `json:"terminalTotalDifficulty,omitempty"`

	// TerminalTotalDifficultyPassed is a flag specifying that the network already
	// passed the terminal total difficulty. Its purpose is to disable legacy sync
	// even without having seen the TTD locally (safer long term).
	TerminalTotalDifficultyPassed bool `json:"terminalTotalDifficultyPassed,omitempty"`

	// Various consensus engines
	Ethash *EthashConfig `json:"ethash,omitempty"`
	Clique *CliqueConfig `json:"clique,omitempty"`
	// contains filtered or unexported fields
}

ChainConfig is the core config which determines the blockchain settings.

ChainConfig is stored in the database on a per block basis. This means that any network, identified by its genesis block, can have its own set of configuration options.

func (*ChainConfig) BaseFeeChangeDenominator 

func (c *ChainConfig) BaseFeeChangeDenominator() uint64

BaseFeeChangeDenominator bounds the amount the base fee can change between blocks.

func (*ChainConfig) CheckCompatible 

func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64, time uint64) *ConfigCompatError

CheckCompatible checks whether scheduled fork transitions have been imported with a mismatching chain configuration.

func (*ChainConfig) CheckConfigForkOrder 

func (c *ChainConfig) CheckConfigForkOrder() error

CheckConfigForkOrder checks that we don't "skip" any forks, geth isn't pluggable enough to guarantee that forks can be implemented in a different order than on official networks

func (*ChainConfig) Description 

func (c *ChainConfig) Description() string

Description returns a human-readable description of ChainConfig.

func (*ChainConfig) ElasticityMultiplier 

func (c *ChainConfig) ElasticityMultiplier() uint64

ElasticityMultiplier bounds the maximum gas limit an EIP-1559 block may have.

func (*ChainConfig) Hooks 

func (c *ChainConfig) Hooks() ChainConfigHooks

Hooks returns the hooks registered with RegisterExtras, or NOOPHooks if none were registered.

func (*ChainConfig) IsArrowGlacier 

func (c *ChainConfig) IsArrowGlacier(num *big.Int) bool

IsArrowGlacier returns whether num is either equal to the Arrow Glacier (EIP-4345) fork block or greater.

func (*ChainConfig) IsBerlin 

func (c *ChainConfig) IsBerlin(num *big.Int) bool

IsBerlin returns whether num is either equal to the Berlin fork block or greater.

func (*ChainConfig) IsByzantium 

func (c *ChainConfig) IsByzantium(num *big.Int) bool

IsByzantium returns whether num is either equal to the Byzantium fork block or greater.

func (*ChainConfig) IsCancun 

func (c *ChainConfig) IsCancun(num *big.Int, time uint64) bool

IsCancun returns whether num is either equal to the Cancun fork time or greater.

func (*ChainConfig) IsConstantinople 

func (c *ChainConfig) IsConstantinople(num *big.Int) bool

IsConstantinople returns whether num is either equal to the Constantinople fork block or greater.

func (*ChainConfig) IsDAOFork 

func (c *ChainConfig) IsDAOFork(num *big.Int) bool

IsDAOFork returns whether num is either equal to the DAO fork block or greater.

func (*ChainConfig) IsEIP150 

func (c *ChainConfig) IsEIP150(num *big.Int) bool

IsEIP150 returns whether num is either equal to the EIP150 fork block or greater.

func (*ChainConfig) IsEIP155 

func (c *ChainConfig) IsEIP155(num *big.Int) bool

IsEIP155 returns whether num is either equal to the EIP155 fork block or greater.

func (*ChainConfig) IsEIP158 

func (c *ChainConfig) IsEIP158(num *big.Int) bool

IsEIP158 returns whether num is either equal to the EIP158 fork block or greater.

func (*ChainConfig) IsGrayGlacier 

func (c *ChainConfig) IsGrayGlacier(num *big.Int) bool

IsGrayGlacier returns whether num is either equal to the Gray Glacier (EIP-5133) fork block or greater.

func (*ChainConfig) IsHomestead 

func (c *ChainConfig) IsHomestead(num *big.Int) bool

IsHomestead returns whether num is either equal to the homestead block or greater.

func (*ChainConfig) IsIstanbul 

func (c *ChainConfig) IsIstanbul(num *big.Int) bool

IsIstanbul returns whether num is either equal to the Istanbul fork block or greater.

func (*ChainConfig) IsLondon 

func (c *ChainConfig) IsLondon(num *big.Int) bool

IsLondon returns whether num is either equal to the London fork block or greater.

func (*ChainConfig) IsMuirGlacier 

func (c *ChainConfig) IsMuirGlacier(num *big.Int) bool

IsMuirGlacier returns whether num is either equal to the Muir Glacier (EIP-2384) fork block or greater.

func (*ChainConfig) IsPetersburg 

func (c *ChainConfig) IsPetersburg(num *big.Int) bool

IsPetersburg returns whether num is either - equal to or greater than the PetersburgBlock fork block, - OR is nil, and Constantinople is active

func (*ChainConfig) IsPrague 

func (c *ChainConfig) IsPrague(num *big.Int, time uint64) bool

IsPrague returns whether num is either equal to the Prague fork time or greater.

func (*ChainConfig) IsShanghai 

func (c *ChainConfig) IsShanghai(num *big.Int, time uint64) bool

IsShanghai returns whether time is either equal to the Shanghai fork time or greater.

func (*ChainConfig) IsTerminalPoWBlock 

func (c *ChainConfig) IsTerminalPoWBlock(parentTotalDiff *big.Int, totalDiff *big.Int) bool

IsTerminalPoWBlock returns whether the given block is the last block of PoW stage.

func (*ChainConfig) IsVerkle 

func (c *ChainConfig) IsVerkle(num *big.Int, time uint64) bool

IsVerkle returns whether num is either equal to the Verkle fork time or greater.

func (*ChainConfig) LatestFork 

func (c *ChainConfig) LatestFork(time uint64) forks.Fork

LatestFork returns the latest time-based fork that would be active for the given time.

func (*ChainConfig) MarshalJSON 

func (c *ChainConfig) MarshalJSON() ([]byte, error)

MarshalJSON implements the json.Marshaler interface.

func (*ChainConfig) Rules 

func (c *ChainConfig) Rules(num *big.Int, isMerge bool, timestamp uint64) Rules

Rules ensures c's ChainID is not nil.

func (*ChainConfig) UnmarshalJSON 

func (c *ChainConfig) UnmarshalJSON(data []byte) error

UnmarshalJSON implements the json.Unmarshaler interface.

type ChainConfigHooks 

type ChainConfigHooks interface {
	CheckConfigForkOrder() error
	CheckConfigCompatible(newcfg *ChainConfig, headNumber *big.Int, headTimestamp uint64) *ConfigCompatError
	Description() string
}

ChainConfigHooks are required for all types registered as Extras for ChainConfig payloads.

type CliqueConfig 

type CliqueConfig struct {
	Period uint64 `json:"period"` // Number of seconds between blocks to enforce
	Epoch  uint64 `json:"epoch"`  // Epoch length to reset votes and checkpoint
}

CliqueConfig is the consensus engine configs for proof-of-authority based sealing.

func (*CliqueConfig) String 

func (c *CliqueConfig) String() string

String implements the stringer interface, returning the consensus engine details.

type ConfigCompatError 

type ConfigCompatError struct {
	What string

	// block numbers of the stored and new configurations if block based forking
	StoredBlock, NewBlock *big.Int

	// timestamps of the stored and new configurations if time based forking
	StoredTime, NewTime *uint64

	// the block number to which the local chain must be rewound to correct the error
	RewindToBlock uint64

	// the timestamp to which the local chain must be rewound to correct the error
	RewindToTime uint64
}

ConfigCompatError is raised if the locally-stored blockchain is initialised with a ChainConfig that would alter the past.

func (*ConfigCompatError) Error 

func (err *ConfigCompatError) Error() string

type EthashConfig 

type EthashConfig struct{}

EthashConfig is the consensus engine configs for proof-of-work based sealing.

func (*EthashConfig) String 

func (c *EthashConfig) String() string

String implements the stringer interface, returning the consensus engine details.

type ExtraPayloads 

type ExtraPayloads[C ChainConfigHooks, R RulesHooks] struct {
	// contains filtered or unexported fields
}

ExtraPayloads provides strongly typed access to the extra payloads carried by ChainConfig and Rules structs. The only valid way to construct an instance is by a call to RegisterExtras.

Example

This example demonstrates how the rest of this file would be used from a *different* package. 

// In practice, everything in this file except for the Example() function SHOULD
// be a standalone package, typically called `extraparams`. As long as this new
// package is imported anywhere, its init() function will register the "extra"
// types, which can be accessed via [extraparams.FromChainConfig] and/or
// [extraparams.FromRules]. In all other respects, the [params.ChainConfig] and
// [params.Rules] types will act as expected.
//
// The Example() function demonstrates how the `extraparams` package might be
// used from elsewhere.
package main

import (
	"encoding/json"
	"errors"
	"fmt"
	"log"
	"math/big"
	"time"

	"github.com/ava-labs/libevm/common"
	"github.com/ava-labs/libevm/core/vm"
	"github.com/ava-labs/libevm/libevm"
	"github.com/ava-labs/libevm/params"
)

// In practice this would be a regular init() function but nuances around the
// testing of this package require it to be called in the Example().
func initFn() {
	params.TestOnlyClearRegisteredExtras() // not necessary outside of the example
	// This registration makes *all* [params.ChainConfig] and [params.Rules]
	// instances respect the payload types. They do not need to be modified to
	// know about `extraparams`.
	payloads = params.RegisterExtras(params.Extras[ChainConfigExtra, RulesExtra]{
		NewRules: constructRulesExtra,
	})
}

var payloads params.ExtraPayloads[ChainConfigExtra, RulesExtra]

// constructRulesExtra acts as an adjunct to the [params.ChainConfig.Rules]
// method. Its primary purpose is to construct the extra payload for the
// [params.Rules] but it MAY also modify the [params.Rules].
func constructRulesExtra(c *params.ChainConfig, r *params.Rules, cEx ChainConfigExtra, blockNum *big.Int, isMerge bool, timestamp uint64) RulesExtra {
	return RulesExtra{
		IsMyFork:  cEx.MyForkTime != nil && *cEx.MyForkTime <= timestamp,
		timestamp: timestamp,
	}
}

// ChainConfigExtra can be any struct. Here it just mirrors a common pattern in
// the standard [params.ChainConfig] struct.
type ChainConfigExtra struct {
	MyForkTime *uint64 `json:"myForkTime"`

	// (Optional) If not all hooks are desirable then embedding a [NOOPHooks]
	// allows the type to satisfy the [ChainConfigHooks] interface, resulting in
	// default Ethereum behaviour.
	params.NOOPHooks
}

// RulesExtra can be any struct. It too mirrors a common pattern in
// [params.Rules].
type RulesExtra struct {
	IsMyFork  bool
	timestamp uint64

	params.NOOPHooks
}

// FromChainConfig returns the extra payload carried by the ChainConfig.
func FromChainConfig(c *params.ChainConfig) ChainConfigExtra {
	return payloads.FromChainConfig(c)
}

// FromRules returns the extra payload carried by the Rules.
func FromRules(r *params.Rules) RulesExtra {
	return payloads.FromRules(r)
}

// myForkPrecompiledContracts is analogous to the vm.PrecompiledContracts<Fork>
// maps. Note [RulesExtra.PrecompileOverride] treatment of nil values here.
var myForkPrecompiledContracts = map[common.Address]vm.PrecompiledContract{
	//...
	common.BytesToAddress([]byte{0x2}): nil, // i.e disabled
	//...
}

// PrecompileOverride implements the required [params.RuleHooks] method.
func (r RulesExtra) PrecompileOverride(addr common.Address) (_ libevm.PrecompiledContract, override bool) {
	if !r.IsMyFork {
		return nil, false
	}
	p, ok := myForkPrecompiledContracts[addr]
	// The returned boolean indicates whether or not [vm.EVMInterpreter] MUST
	// override the address, not what it returns as its own `isPrecompile`
	// boolean.
	//
	// Therefore returning `nil, true` here indicates that the precompile will
	// be disabled. Returning `false` here indicates that the default precompile
	// behaviour will be exhibited.
	//
	// The same pattern can alternatively be implemented with an explicit
	// `disabledPrecompiles` set to make the behaviour clearer.
	return p, ok
}

// CanCreateContract implements the required [params.RuleHooks] method. Access
// to state allows it to be configured on-chain however this is an optional
// implementation detail.
func (r RulesExtra) CanCreateContract(_ *libevm.AddressContext, gas uint64, _ libevm.StateReader) (uint64, error) {
	if time.Unix(int64(r.timestamp), 0).UTC().Day() != int(time.Tuesday) { //nolint:gosec // G115 timestamp won't overflow int64 for millions of years so this is someone else's problem
		// Consumes all remaining gas.
		return 0, errors.New("uh oh")
	}
	return gas, nil
}

// This example demonstrates how the rest of this file would be used from a
// *different* package.
func main() {
	initFn() // Outside of an example this is unnecessary as the function will be a regular init().

	const forkTime = 530003640
	jsonData := fmt.Sprintf(`{
		"chainId": 1234,
		"extra": {
			"myForkTime": %d
		}
	}`, forkTime)

	// Because [params.RegisterExtras] has been called, unmarshalling a JSON
	// field of "extra" into a [params.ChainConfig] will populate a new value of
	// the registered type. This can be accessed with the [FromChainConfig]
	// function.
	config := new(params.ChainConfig)
	if err := json.Unmarshal([]byte(jsonData), config); err != nil {
		log.Fatal(err)
	}

	fmt.Println("Chain ID", config.ChainID) // original geth fields work as expected

	ccExtra := FromChainConfig(config) // extraparams.FromChainConfig() in practice
	if ccExtra.MyForkTime != nil {
		fmt.Println("Fork time", *ccExtra.MyForkTime)
	}

	for _, time := range []uint64{forkTime - 1, forkTime, forkTime + 1} {
		rules := config.Rules(nil, false, time)
		rExtra := FromRules(&rules) // extraparams.FromRules() in practice
		fmt.Printf("IsMyFork at %v: %t\n", rExtra.timestamp, rExtra.IsMyFork)
	}

}

Output:

Chain ID 1234
Fork time 530003640
IsMyFork at 530003639: false
IsMyFork at 530003640: true
IsMyFork at 530003641: true

func RegisterExtras 

func RegisterExtras[C ChainConfigHooks, R RulesHooks](e Extras[C, R]) ExtraPayloads[C, R]

RegisterExtras registers the types `C` and `R` such that they are carried as extra payloads in ChainConfig and Rules structs, respectively. It is expected to be called in an `init()` function and MUST NOT be called more than once. Both `C` and `R` MUST be structs or pointers to structs.

After registration, JSON unmarshalling of a ChainConfig will create a new `C` and unmarshal the JSON key "extra" into it. Conversely, JSON marshalling will populate the "extra" key with the contents of the `C`. Both the json.Marshaler and json.Unmarshaler interfaces are honoured if implemented by `C` and/or `R.`

Calls to ChainConfig.Rules will call the `NewRules` function of the registered Extras to create a new `R`.

The payloads can be accessed via the ExtraPayloads.FromChainConfig and ExtraPayloads.FromRules methods of the accessor returned by RegisterExtras. Where stated in the interface definitions, they will also be used as hooks to alter Ethereum behaviour; if this isn't desired then they can embed NOOPHooks to satisfy either interface.

func (ExtraPayloads[C, R]) FromChainConfig 

func (ExtraPayloads[C, R]) FromChainConfig(c *ChainConfig) C

FromChainConfig returns the ChainConfig's extra payload.

func (ExtraPayloads[C, R]) FromRules 

func (ExtraPayloads[C, R]) FromRules(r *Rules) R

FromRules returns the Rules' extra payload.

func (ExtraPayloads[C, R]) PointerFromChainConfig 

func (ExtraPayloads[C, R]) PointerFromChainConfig(c *ChainConfig) *C

PointerFromChainConfig returns a pointer to the ChainConfig's extra payload. This is guaranteed to be non-nil.

Note that copying a ChainConfig by dereferencing a pointer will result in a shallow copy and that the *C returned here will therefore be shared by all copies. If this is not the desired behaviour, use ExtraPayloads.SetOnChainConfig.

func (ExtraPayloads[C, R]) PointerFromRules 

func (ExtraPayloads[C, R]) PointerFromRules(r *Rules) *R

PointerFromRules returns a pointer to the Rules's extra payload. This is guaranteed to be non-nil.

Note that copying a Rules by dereferencing a pointer will result in a shallow copy and that the *R returned here will therefore be shared by all copies. If this is not the desired behaviour, use ExtraPayloads.SetOnRules.

func (ExtraPayloads[C, R]) SetOnChainConfig 

func (e ExtraPayloads[C, R]) SetOnChainConfig(cc *ChainConfig, val C)

SetOnChainConfig sets the ChainConfig's extra payload.

func (ExtraPayloads[C, R]) SetOnRules 

func (e ExtraPayloads[C, R]) SetOnRules(r *Rules, val R)

SetOnRules sets the Rules' extra payload.

type Extras 

type Extras[C ChainConfigHooks, R RulesHooks] struct {
	// ReuseJSONRoot, if true, signals that JSON unmarshalling of a
	// [ChainConfig] MUST reuse the root JSON input when unmarshalling the extra
	// payload. If false, it is assumed that the extra JSON payload is nested in
	// the "extra" key.
	//
	// *NOTE* this requires multiple passes for both marshalling and
	// unmarshalling of JSON so is inefficient and should be used as a last
	// resort.
	ReuseJSONRoot bool
	// NewRules, if non-nil is called at the end of [ChainConfig.Rules] with the
	// newly created [Rules] and other context from the method call. Its
	// returned value will be the extra payload of the [Rules]. If NewRules is
	// nil then so too will the [Rules] extra payload be a zero-value `R`.
	//
	// NewRules MAY modify the [Rules] but MUST NOT modify the [ChainConfig].
	// TODO(arr4n): add the [Rules] to the return signature to make it clearer
	// that the caller can modify the generated Rules.
	NewRules func(_ *ChainConfig, _ *Rules, _ C, blockNum *big.Int, isMerge bool, timestamp uint64) R
}

Extras are arbitrary payloads to be added as extra fields in ChainConfig and Rules structs. See RegisterExtras.

type NOOPHooks 

type NOOPHooks struct{}

NOOPHooks implements both ChainConfigHooks and RulesHooks such that every hook is a no-op. This allows it to be returned instead of a nil interface, which would otherwise require every usage site to perform a nil check. It can also be embedded in structs that only wish to implement a sub-set of hooks. Use of a NOOPHooks is equivalent to default Ethereum behaviour.

func (NOOPHooks) ActivePrecompiles 

func (NOOPHooks) ActivePrecompiles(active []common.Address) []common.Address

ActivePrecompiles echoes the active addresses unchanged.

func (NOOPHooks) CanCreateContract 

func (NOOPHooks) CanCreateContract(_ *libevm.AddressContext, gas uint64, _ libevm.StateReader) (uint64, error)

CanCreateContract allows all (otherwise valid) contract deployment, not consuming any more gas.

func (NOOPHooks) CanExecuteTransaction 

func (NOOPHooks) CanExecuteTransaction(_ common.Address, _ *common.Address, _ libevm.StateReader) error

CanExecuteTransaction allows all (otherwise valid) transactions.

func (NOOPHooks) CheckConfigCompatible 

func (NOOPHooks) CheckConfigCompatible(*ChainConfig, *big.Int, uint64) *ConfigCompatError

CheckConfigCompatible verifies all (otherwise valid) new configs.

func (NOOPHooks) CheckConfigForkOrder 

func (NOOPHooks) CheckConfigForkOrder() error

CheckConfigForkOrder verifies all (otherwise valid) fork orders.

func (NOOPHooks) Description 

func (NOOPHooks) Description() string

Description returns the empty string.

func (NOOPHooks) PrecompileOverride 

func (NOOPHooks) PrecompileOverride(common.Address) (libevm.PrecompiledContract, bool)

PrecompileOverride instructs the EVM interpreter to use the default precompile behaviour.

type Rules 

type Rules struct {
	ChainID                                                 *big.Int
	IsHomestead, IsEIP150, IsEIP155, IsEIP158               bool
	IsByzantium, IsConstantinople, IsPetersburg, IsIstanbul bool
	IsBerlin, IsLondon                                      bool
	IsMerge, IsShanghai, IsCancun, IsPrague                 bool
	IsVerkle                                                bool
	// contains filtered or unexported fields
}

Rules wraps ChainConfig and is merely syntactic sugar or can be used for functions that do not have or require information about the block.

Rules is a one time interface meaning that it shouldn't be used in between transition phases.

func (*Rules) Hooks 

func (r *Rules) Hooks() RulesHooks

Hooks returns the hooks registered with RegisterExtras, or NOOPHooks if none were registered.

type RulesAllowlistHooks 

type RulesAllowlistHooks interface {
	// CanCreateContract is called after the deployer's nonce is incremented but
	// before all other state-modifying actions.
	CanCreateContract(_ *libevm.AddressContext, gas uint64, _ libevm.StateReader) (gasRemaining uint64, _ error)
	CanExecuteTransaction(from common.Address, to *common.Address, _ libevm.StateReader) error
}

RulesAllowlistHooks are a subset of RulesHooks that gate actions, signalled by returning a nil (allowed) or non-nil (blocked) error.

type RulesHooks 

type RulesHooks interface {
	RulesAllowlistHooks
	// PrecompileOverride signals whether or not the EVM interpreter MUST
	// override its treatment of the address when deciding if it is a
	// precompiled contract. If PrecompileOverride returns `true` then the
	// interpreter will treat the address as a precompile i.f.f the
	// [PrecompiledContract] is non-nil. If it returns `false` then the default
	// precompile behaviour is honoured.
	PrecompileOverride(common.Address) (_ libevm.PrecompiledContract, override bool)
	// ActivePrecompiles receives the addresses that would usually be returned
	// by a call to [vm.ActivePrecompiles] and MUST return the value to be
	// returned by said function, which will be propagated. It MAY alter the
	// received slice. The value it returns MUST be consistent with the
	// behaviour of the PrecompileOverride hook.
	ActivePrecompiles([]common.Address) []common.Address
}

RulesHooks are required for all types registered as Extras for Rules payloads.

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