params

package
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Published: Feb 8, 2018 License: GPL-3.0 Imports: 4 Imported by: 0

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Index

Constants

View Source
const (
	// These are the multipliers for ether denominations.
	// Example: To get the wei value of an amount in 'douglas', use
	//
	//    new(big.Int).Mul(value, big.NewInt(params.Douglas))
	//
	Wei      = 1
	Ada      = 1e3
	Babbage  = 1e6
	Shannon  = 1e9
	Szabo    = 1e12
	Finney   = 1e15
	Ether    = 1e18
	Einstein = 1e21
	Douglas  = 1e42
)
View Source
const (
	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.
	SstoreSetGas          uint64 = 20000 // Once per SLOAD operation.
	LogDataGas            uint64 = 8     // Per byte in a LOG* operation's data.
	CallStipend           uint64 = 2300  // Free gas given at beginning of call.

	Sha3Gas          uint64 = 30    // Once per SHA3 operation.
	Sha3WordGas      uint64 = 6     // Once per word of the SHA3 operation's data.
	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.
	JumpdestGas      uint64 = 1     // Refunded gas, once per SSTORE operation if the zeroness changes to zero.
	EpochDuration    uint64 = 30000 // Duration between proof-of-work epochs.
	CallGas          uint64 = 40    // Once per CALL operation & message call transaction.
	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.
	SuicideRefundGas uint64 = 24000 // Refunded following a suicide 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.
	TxDataNonZeroGas 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.

	MaxCodeSize = 24576 // Maximum bytecode to permit for a contract

	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
	ModExpQuadCoeffDiv      uint64 = 20     // Divisor for the quadratic particle of the big int modular exponentiation
	Bn256AddGas             uint64 = 500    // Gas needed for an elliptic curve addition
	Bn256ScalarMulGas       uint64 = 40000  // Gas needed for an elliptic curve scalar multiplication
	Bn256PairingBaseGas     uint64 = 100000 // Base price for an elliptic curve pairing check
	Bn256PairingPerPointGas uint64 = 80000  // Per-point price for an elliptic curve pairing check

	QuorumMaximumExtraDataSize uint64 = 65 // Maximum size extra data may be after Genesis.
)
View Source
const (
	VersionMajor = 1        // Major version component of the current release
	VersionMinor = 7        // Minor version component of the current release
	VersionPatch = 2        // Patch version component of the current release
	VersionMeta  = "stable" // Version metadata to append to the version string

	QuorumVersionMajor = 2
	QuorumVersionMinor = 0
	QuorumVersionPatch = 0
)
View Source
const (
	// BloomBitsBlocks is the number of blocks a single bloom bit section vector
	// contains.
	BloomBitsBlocks uint64 = 4096
)

Variables

View Source
var (
	MainnetGenesisHash = common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3") // Mainnet genesis hash to enforce below configs on
	TestnetGenesisHash = common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d") // Testnet genesis hash to enforce below configs on
)
View Source
var (
	// MainnetChainConfig is the chain parameters to run a node on the main network.
	MainnetChainConfig = &ChainConfig{
		ChainId:        big.NewInt(1),
		HomesteadBlock: big.NewInt(1150000),
		DAOForkBlock:   big.NewInt(1920000),
		DAOForkSupport: true,
		EIP150Block:    big.NewInt(2463000),
		EIP150Hash:     common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"),
		EIP155Block:    big.NewInt(2675000),
		EIP158Block:    big.NewInt(2675000),
		ByzantiumBlock: big.NewInt(4370000),

		Ethash: new(EthashConfig),
	}

	// TestnetChainConfig contains the chain parameters to run a node on the Ropsten test network.
	TestnetChainConfig = &ChainConfig{
		ChainId:        big.NewInt(3),
		HomesteadBlock: big.NewInt(0),
		DAOForkBlock:   nil,
		DAOForkSupport: true,
		EIP150Block:    big.NewInt(0),
		EIP150Hash:     common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d"),
		EIP155Block:    big.NewInt(10),
		EIP158Block:    big.NewInt(10),
		ByzantiumBlock: big.NewInt(1700000),

		Ethash: new(EthashConfig),
	}

	// RinkebyChainConfig contains the chain parameters to run a node on the Rinkeby test network.
	RinkebyChainConfig = &ChainConfig{
		ChainId:        big.NewInt(4),
		HomesteadBlock: big.NewInt(1),
		DAOForkBlock:   nil,
		DAOForkSupport: true,
		EIP150Block:    big.NewInt(2),
		EIP150Hash:     common.HexToHash("0x9b095b36c15eaf13044373aef8ee0bd3a382a5abb92e402afa44b8249c3a90e9"),
		EIP155Block:    big.NewInt(3),
		EIP158Block:    big.NewInt(3),
		ByzantiumBlock: big.NewInt(1035301),

		Clique: &CliqueConfig{
			Period: 15,
			Epoch:  30000,
		},
	}

	// OttomanChainConfig contains the chain parameters to run a node on the Ottoman test network.
	OttomanChainConfig = &ChainConfig{
		ChainId:        big.NewInt(5),
		HomesteadBlock: big.NewInt(1),
		DAOForkBlock:   nil,
		DAOForkSupport: true,
		EIP150Block:    big.NewInt(2),
		EIP150Hash:     common.HexToHash("0x9b095b36c15eaf13044373aef8ee0bd3a382a5abb92e402afa44b8249c3a90e9"),
		EIP155Block:    big.NewInt(3),
		EIP158Block:    big.NewInt(3),
		ByzantiumBlock: big.NewInt(math.MaxInt64),

		Istanbul: &IstanbulConfig{
			Epoch:          30000,
			ProposerPolicy: 0,
		},
	}

	// AllEthashProtocolChanges contains every protocol change (EIPs) introduced
	// and accepted by the Ethereum core developers into the Ethash consensus.
	//
	// This configuration is intentionally not using keyed fields to force anyone
	// adding flags to the config to also have to set these fields.
	AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), new(EthashConfig), nil, nil, false}

	// AllCliqueProtocolChanges contains every protocol change (EIPs) introduced
	// and accepted by the Ethereum core developers into the Clique consensus.
	//
	// This configuration is intentionally not using keyed fields to force anyone
	// adding flags to the config to also have to set these fields.
	AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, &CliqueConfig{Period: 0, Epoch: 30000}, nil, false}

	TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), new(EthashConfig), nil, nil, false}
	TestRules       = TestChainConfig.Rules(new(big.Int))

	QuorumTestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, nil, common.Hash{}, nil, nil, nil, new(EthashConfig), nil, nil, true}
)
View Source
var (
	// GasTableHomestead contain the gas prices for
	// the homestead phase.
	GasTableHomestead = GasTable{
		ExtcodeSize: 20,
		ExtcodeCopy: 20,
		Balance:     20,
		SLoad:       50,
		Calls:       40,
		Suicide:     0,
		ExpByte:     10,
	}

	// GasTableHomestead contain the gas re-prices for
	// the homestead phase.
	GasTableEIP150 = GasTable{
		ExtcodeSize: 700,
		ExtcodeCopy: 700,
		Balance:     400,
		SLoad:       200,
		Calls:       700,
		Suicide:     5000,
		ExpByte:     10,

		CreateBySuicide: 25000,
	}

	GasTableEIP158 = GasTable{
		ExtcodeSize: 700,
		ExtcodeCopy: 700,
		Balance:     400,
		SLoad:       200,
		Calls:       700,
		Suicide:     5000,
		ExpByte:     50,

		CreateBySuicide: 25000,
	}
)
View Source
var (
	GasLimitBoundDivisor   = big.NewInt(1024)                  // The bound divisor of the gas limit, used in update calculations.
	MinGasLimit            = big.NewInt(5000)                  // Minimum the gas limit may ever be.
	GenesisGasLimit        = big.NewInt(4712388)               // Gas limit of the Genesis block.
	TargetGasLimit         = new(big.Int).Set(GenesisGasLimit) // The artificial target
	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.
)
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 DiscoveryV5Bootnodes = []string{
	"enode://0cc5f5ffb5d9098c8b8c62325f3797f56509bff942704687b6530992ac706e2cb946b90a34f1f19548cd3c7baccbcaea354531e5983c7d1bc0dee16ce4b6440b@40.118.3.223:30305",
	"enode://1c7a64d76c0334b0418c004af2f67c50e36a3be60b5e4790bdac0439d21603469a85fad36f2473c9a80eb043ae60936df905fa28f1ff614c3e5dc34f15dcd2dc@40.118.3.223:30308",
	"enode://85c85d7143ae8bb96924f2b54f1b3e70d8c4d367af305325d30a61385a432f247d2c75c45c6b4a60335060d072d7f5b35dd1d4c45f76941f62a4f83b6e75daaf@40.118.3.223:30309",
}

DiscoveryV5Bootnodes are the enode URLs of the P2P bootstrap nodes for the experimental RLPx v5 topic-discovery network.

View Source
var MainnetBootnodes = []string{

	"enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303",
	"enode://3f1d12044546b76342d59d4a05532c14b85aa669704bfe1f864fe079415aa2c02d743e03218e57a33fb94523adb54032871a6c51b2cc5514cb7c7e35b3ed0a99@13.93.211.84:30303",
	"enode://78de8a0916848093c73790ead81d1928bec737d565119932b98c6b100d944b7a95e94f847f689fc723399d2e31129d182f7ef3863f2b4c820abbf3ab2722344d@191.235.84.50:30303",
	"enode://158f8aab45f6d19c6cbf4a089c2670541a8da11978a2f90dbf6a502a4a3bab80d288afdbeb7ec0ef6d92de563767f3b1ea9e8e334ca711e9f8e2df5a0385e8e6@13.75.154.138:30303",
	"enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303",

	"enode://979b7fa28feeb35a4741660a16076f1943202cb72b6af70d327f053e248bab9ba81760f39d0701ef1d8f89cc1fbd2cacba0710a12cd5314d5e0c9021aa3637f9@5.1.83.226:30303",
}

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

View Source
var OttomanBootnodes = []string{
	"enode://851ceb576681cf1e0d46ee9f049d6c678f229d806d1b41afe5b6d3c99a43fbbb7271d60e4c43cc5535e125a61db4ea2424823a3ad2c5959e8125f546cd1a7969@13.76.136.158:30303",
	"enode://e3b5624752b86b60aa492edd65bdc906f9861a5e9113abd8f908443d1f64395c0e2bdd2e1825154837fd72da9d2e55e4f231411d5ca99ba9c90e14ba2f5612f6@52.163.118.231:30303",
	"enode://3a1c96fe1fe9da5d4ea3b1a65bfecb4571101b519595cab6deb2eb029209353cdbc91c8d3751d0c6c00e5440657b678508e99bd9e934d4a0c1ad553fc1cb9155@13.76.140.250:30303",
	"enode://aebe74e4ab7db8074d1cb9634dab3fd8c5745f8cc4868da2007ff754721085b189ffaf44b8041219de90b55df3ac515bbd0e1df7fde8d7684df0ecfb12534a73@52.187.45.126:30303",
}

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

View Source
var QuorumVersion = func() string {
	return fmt.Sprintf("%d.%d.%d", QuorumVersionMajor, QuorumVersionMinor, QuorumVersionPatch)
}()

Version holds the textual version string.

View Source
var RinkebyBootnodes = []string{
	"enode://a24ac7c5484ef4ed0c5eb2d36620ba4e4aa13b8c84684e1b4aab0cebea2ae45cb4d375b77eab56516d34bfbd3c1a833fc51296ff084b770b94fb9028c4d25ccf@52.169.42.101:30303",
	"enode://343149e4feefa15d882d9fe4ac7d88f885bd05ebb735e547f12e12080a9fa07c8014ca6fd7f373123488102fe5e34111f8509cf0b7de3f5b44339c9f25e87cb8@52.3.158.184:30303",
}

RinkebyBootnodes are the enode URLs of the P2P bootstrap nodes running on the Rinkeby test network.

View Source
var RinkebyV5Bootnodes = []string{
	"enode://a24ac7c5484ef4ed0c5eb2d36620ba4e4aa13b8c84684e1b4aab0cebea2ae45cb4d375b77eab56516d34bfbd3c1a833fc51296ff084b770b94fb9028c4d25ccf@52.169.42.101:30303?discport=30304",
	"enode://343149e4feefa15d882d9fe4ac7d88f885bd05ebb735e547f12e12080a9fa07c8014ca6fd7f373123488102fe5e34111f8509cf0b7de3f5b44339c9f25e87cb8@52.3.158.184:30303?discport=30304",
}

RinkebyV5Bootnodes are the enode URLs of the P2P bootstrap nodes running on the Rinkeby test network for the experimental RLPx v5 topic-discovery network.

View Source
var TestnetBootnodes = []string{
	"enode://6ce05930c72abc632c58e2e4324f7c7ea478cec0ed4fa2528982cf34483094e9cbc9216e7aa349691242576d552a2a56aaeae426c5303ded677ce455ba1acd9d@13.84.180.240:30303",
	"enode://20c9ad97c081d63397d7b685a412227a40e23c8bdc6688c6f37e97cfbc22d2b4d1db1510d8f61e6a8866ad7f0e17c02b14182d37ea7c3c8b9c2683aeb6b733a1@52.169.14.227:30303",
}

TestnetBootnodes are the enode URLs of the P2P bootstrap nodes running on the Ropsten test network.

View Source
var Version = func() string {
	v := fmt.Sprintf("%d.%d.%d", VersionMajor, VersionMinor, VersionPatch)
	if VersionMeta != "" {
		v += "-" + VersionMeta
	}

	return v
}()

Version holds the textual version string.

Functions

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 GetMaximumExtraDataSize

func GetMaximumExtraDataSize(isQuorum bool) uint64

func VersionWithCommit

func VersionWithCommit(gitCommit string) string

Types

type ChainConfig

type ChainConfig struct {
	ChainId *big.Int `json:"chainId"` // Chain id 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)
	EIP150Hash  common.Hash `json:"eip150Hash,omitempty"`  // EIP150 HF hash (needed for header only clients as only gas pricing changed)

	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)

	// Various consensus engines
	Ethash   *EthashConfig   `json:"ethash,omitempty"`
	Clique   *CliqueConfig   `json:"clique,omitempty"`
	Istanbul *IstanbulConfig `json:"istanbul,omitempty"`

	IsQuorum bool `json:"isQuorum"`
}

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) CheckCompatible

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

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

func (*ChainConfig) GasTable

func (c *ChainConfig) GasTable(num *big.Int) GasTable

GasTable returns the gas table corresponding to the current phase (homestead or homestead reprice).

The returned GasTable's fields shouldn't, under any circumstances, be changed.

func (*ChainConfig) IsByzantium

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

func (*ChainConfig) IsDAOFork

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

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

func (*ChainConfig) IsEIP150

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

func (*ChainConfig) IsEIP155

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

func (*ChainConfig) IsEIP158

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

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) Rules

func (c *ChainConfig) Rules(num *big.Int) Rules

func (*ChainConfig) String

func (c *ChainConfig) String() string

String implements the fmt.Stringer interface.

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
	StoredConfig, NewConfig *big.Int
	// the block number to which the local chain must be rewound to correct the error
	RewindTo 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 GasTable

type GasTable struct {
	ExtcodeSize uint64
	ExtcodeCopy uint64
	Balance     uint64
	SLoad       uint64
	Calls       uint64
	Suicide     uint64

	ExpByte uint64

	// CreateBySuicide occurs when the
	// refunded account is one that does
	// not exist. This logic is similar
	// to call. May be left nil. Nil means
	// not charged.
	CreateBySuicide uint64
}

type IstanbulConfig

type IstanbulConfig struct {
	Epoch          uint64 `json:"epoch"`  // Epoch length to reset votes and checkpoint
	ProposerPolicy uint64 `json:"policy"` // The policy for proposer selection
}

IstanbulConfig is the consensus engine configs for Istanbul based sealing.

func (*IstanbulConfig) String

func (c *IstanbulConfig) String() string

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

type Rules

type Rules struct {
	ChainId                                   *big.Int
	IsHomestead, IsEIP150, IsEIP155, IsEIP158 bool
	IsByzantium                               bool
}

Rules wraps ChainConfig and is merely syntatic 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.

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