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// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it 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 go-ethereum library is distributed in the hope that it 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/>.
package params
import (
"encoding/binary"
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/common"
"golang.org/x/crypto/sha3"
)
// Genesis hashes to enforce below configs on.
var (
MainnetGenesisHash = common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3")
RopstenGenesisHash = common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d")
SepoliaGenesisHash = common.HexToHash("0x25a5cc106eea7138acab33231d7160d69cb777ee0c2c553fcddf5138993e6dd9")
RinkebyGenesisHash = common.HexToHash("0x6341fd3daf94b748c72ced5a5b26028f2474f5f00d824504e4fa37a75767e177")
GoerliGenesisHash = common.HexToHash("0xbf7e331f7f7c1dd2e05159666b3bf8bc7a8a3a9eb1d518969eab529dd9b88c1a")
KilnGenesisHash = common.HexToHash("0x51c7fe41be669f69c45c33a56982cbde405313342d9e2b00d7c91a7b284dd4f8")
)
// TrustedCheckpoints associates each known checkpoint with the genesis hash of
// the chain it belongs to.
var TrustedCheckpoints = map[common.Hash]*TrustedCheckpoint{
MainnetGenesisHash: MainnetTrustedCheckpoint,
RopstenGenesisHash: RopstenTrustedCheckpoint,
SepoliaGenesisHash: SepoliaTrustedCheckpoint,
RinkebyGenesisHash: RinkebyTrustedCheckpoint,
GoerliGenesisHash: GoerliTrustedCheckpoint,
}
// CheckpointOracles associates each known checkpoint oracles with the genesis hash of
// the chain it belongs to.
var CheckpointOracles = map[common.Hash]*CheckpointOracleConfig{
MainnetGenesisHash: MainnetCheckpointOracle,
RopstenGenesisHash: RopstenCheckpointOracle,
RinkebyGenesisHash: RinkebyCheckpointOracle,
GoerliGenesisHash: GoerliCheckpointOracle,
}
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),
EIP150Hash: common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"),
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, // 58_750_000_000_000_000_000_000
TerminalTotalDifficultyPassed: true,
Ethash: new(EthashConfig),
}
// MainnetTrustedCheckpoint contains the light client trusted checkpoint for the main network.
MainnetTrustedCheckpoint = &TrustedCheckpoint{
SectionIndex: 471,
SectionHead: common.HexToHash("0xa03d6354f5ca8d33203bb646ac26a964f240ee54728dcb7483faff0204ec4c9b"),
CHTRoot: common.HexToHash("0x29efeeea3540b7f499b4214d5262bd1fcd87253de10a878f92e6497d848b186f"),
BloomRoot: common.HexToHash("0x2ff6a93ff5e78e823bfc80c6ec856bfe9b20c4ffd0af3cef644a916eabcd3c84"),
}
// MainnetCheckpointOracle contains a set of configs for the main network oracle.
MainnetCheckpointOracle = &CheckpointOracleConfig{
Address: common.HexToAddress("0x9a9070028361F7AAbeB3f2F2Dc07F82C4a98A02a"),
Signers: []common.Address{
common.HexToAddress("0x1b2C260efc720BE89101890E4Db589b44E950527"), // Peter
common.HexToAddress("0x78d1aD571A1A09D60D9BBf25894b44e4C8859595"), // Martin
common.HexToAddress("0x286834935f4A8Cfb4FF4C77D5770C2775aE2b0E7"), // Zsolt
common.HexToAddress("0xb86e2B0Ab5A4B1373e40c51A7C712c70Ba2f9f8E"), // Gary
common.HexToAddress("0x0DF8fa387C602AE62559cC4aFa4972A7045d6707"), // Guillaume
},
Threshold: 2,
}
// RopstenChainConfig contains the chain parameters to run a node on the Ropsten test network.
RopstenChainConfig = &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(1_700_000),
ConstantinopleBlock: big.NewInt(4_230_000),
PetersburgBlock: big.NewInt(4_939_394),
IstanbulBlock: big.NewInt(6_485_846),
MuirGlacierBlock: big.NewInt(7_117_117),
BerlinBlock: big.NewInt(9_812_189),
LondonBlock: big.NewInt(10_499_401),
TerminalTotalDifficulty: new(big.Int).SetUint64(50_000_000_000_000_000),
TerminalTotalDifficultyPassed: true,
Ethash: new(EthashConfig),
}
// RopstenTrustedCheckpoint contains the light client trusted checkpoint for the Ropsten test network.
RopstenTrustedCheckpoint = &TrustedCheckpoint{
SectionIndex: 393,
SectionHead: common.HexToHash("0x04479087c89428c6ed0d4ff25642776f0c35747d8ecef90547fa3ce4ebec8606"),
CHTRoot: common.HexToHash("0xaa100968cebe48dba3a8f196f044db04113d5a938ff083838ce6f2c588d416ad"),
BloomRoot: common.HexToHash("0xb9108d510c4b50b60793feead27620781bc1c2164e072d8022201c4eb7c36ba0"),
}
// RopstenCheckpointOracle contains a set of configs for the Ropsten test network oracle.
RopstenCheckpointOracle = &CheckpointOracleConfig{
Address: common.HexToAddress("0xEF79475013f154E6A65b54cB2742867791bf0B84"),
Signers: []common.Address{
common.HexToAddress("0x32162F3581E88a5f62e8A61892B42C46E2c18f7b"), // Peter
common.HexToAddress("0x78d1aD571A1A09D60D9BBf25894b44e4C8859595"), // Martin
common.HexToAddress("0x286834935f4A8Cfb4FF4C77D5770C2775aE2b0E7"), // Zsolt
common.HexToAddress("0xb86e2B0Ab5A4B1373e40c51A7C712c70Ba2f9f8E"), // Gary
common.HexToAddress("0x0DF8fa387C602AE62559cC4aFa4972A7045d6707"), // Guillaume
},
Threshold: 2,
}
// 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),
TerminalTotalDifficulty: big.NewInt(17_000_000_000_000_000),
TerminalTotalDifficultyPassed: true,
MergeNetsplitBlock: big.NewInt(1735371),
Ethash: new(EthashConfig),
}
// SepoliaTrustedCheckpoint contains the light client trusted checkpoint for the Sepolia test network.
SepoliaTrustedCheckpoint = &TrustedCheckpoint{
SectionIndex: 55,
SectionHead: common.HexToHash("0xb70ea113ab4db9d6e015c5b55d486713f60c40bda666121914a71ce3aec53a75"),
CHTRoot: common.HexToHash("0x206456d8847b66aaf427ed551f55e24cff90241bdb0a02583c761bf8164f78e4"),
BloomRoot: common.HexToHash("0x4369228d59a8fe285fee874c636531091e659b3b1294bb978eb159860a1cede2"),
}
// 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(1_035_301),
ConstantinopleBlock: big.NewInt(3_660_663),
PetersburgBlock: big.NewInt(4_321_234),
IstanbulBlock: big.NewInt(5_435_345),
MuirGlacierBlock: nil,
BerlinBlock: big.NewInt(8_290_928),
LondonBlock: big.NewInt(8_897_988),
ArrowGlacierBlock: nil,
Clique: &CliqueConfig{
Period: 15,
Epoch: 30000,
},
}
// RinkebyTrustedCheckpoint contains the light client trusted checkpoint for the Rinkeby test network.
RinkebyTrustedCheckpoint = &TrustedCheckpoint{
SectionIndex: 344,
SectionHead: common.HexToHash("0x06bb973aecce633df8cda532ff75b9d0b38c16de2545f52eaf745f858d0fe616"),
CHTRoot: common.HexToHash("0xf1c80b9270ef9fb7907362bca006f8349f0c38d45b83167b57638f54211c6aca"),
BloomRoot: common.HexToHash("0xd72187253f49bce9d471f5e0ddf2b5008ba695d7a1be1192d52fb4d8b01970c6"),
}
// RinkebyCheckpointOracle contains a set of configs for the Rinkeby test network oracle.
RinkebyCheckpointOracle = &CheckpointOracleConfig{
Address: common.HexToAddress("0xebe8eFA441B9302A0d7eaECc277c09d20D684540"),
Signers: []common.Address{
common.HexToAddress("0xd9c9cd5f6779558b6e0ed4e6acf6b1947e7fa1f3"), // Peter
common.HexToAddress("0x78d1aD571A1A09D60D9BBf25894b44e4C8859595"), // Martin
common.HexToAddress("0x286834935f4A8Cfb4FF4C77D5770C2775aE2b0E7"), // Zsolt
common.HexToAddress("0xb86e2B0Ab5A4B1373e40c51A7C712c70Ba2f9f8E"), // Gary
},
Threshold: 2,
}
// 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,
Clique: &CliqueConfig{
Period: 15,
Epoch: 30000,
},
}
// GoerliTrustedCheckpoint contains the light client trusted checkpoint for the Görli test network.
GoerliTrustedCheckpoint = &TrustedCheckpoint{
SectionIndex: 229,
SectionHead: common.HexToHash("0xc5a7b57cb4af7b3d4cc251ac5f29acaac94e7464365358e7ad26129083b7729a"),
CHTRoot: common.HexToHash("0x54c0d5c756d9c48eda26ea13c2a49c2e31f1cb7dfb01514ddc49f3d24272c77e"),
BloomRoot: common.HexToHash("0xd681970a496f6187d089f8c8665a3587b5a78212d79b6ceef97c0dabd0188e56"),
}
// GoerliCheckpointOracle contains a set of configs for the Goerli test network oracle.
GoerliCheckpointOracle = &CheckpointOracleConfig{
Address: common.HexToAddress("0x18CA0E045F0D772a851BC7e48357Bcaab0a0795D"),
Signers: []common.Address{
common.HexToAddress("0x4769bcaD07e3b938B7f43EB7D278Bc7Cb9efFb38"), // Peter
common.HexToAddress("0x78d1aD571A1A09D60D9BBf25894b44e4C8859595"), // Martin
common.HexToAddress("0x286834935f4A8Cfb4FF4C77D5770C2775aE2b0E7"), // Zsolt
common.HexToAddress("0xb86e2B0Ab5A4B1373e40c51A7C712c70Ba2f9f8E"), // Gary
common.HexToAddress("0x0DF8fa387C602AE62559cC4aFa4972A7045d6707"), // Guillaume
},
Threshold: 2,
}
// 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), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, nil, false, new(EthashConfig), nil}
// 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), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, nil, nil, nil, false, nil, &CliqueConfig{Period: 0, Epoch: 30000}}
TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, nil, false, new(EthashConfig), nil}
NonActivatedConfig = &ChainConfig{big.NewInt(1), nil, nil, false, nil, common.Hash{}, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, false, new(EthashConfig), nil}
TestRules = TestChainConfig.Rules(new(big.Int), false)
)
// NetworkNames are user friendly names to use in the chain spec banner.
var NetworkNames = map[string]string{
MainnetChainConfig.ChainID.String(): "mainnet",
RopstenChainConfig.ChainID.String(): "ropsten",
RinkebyChainConfig.ChainID.String(): "rinkeby",
GoerliChainConfig.ChainID.String(): "goerli",
SepoliaChainConfig.ChainID.String(): "sepolia",
}
// TrustedCheckpoint represents a set of post-processed trie roots (CHT and
// BloomTrie) associated with the appropriate section index and head hash. It is
// used to start light syncing from this checkpoint and avoid downloading the
// entire header chain while still being able to securely access old headers/logs.
type TrustedCheckpoint struct {
SectionIndex uint64 `json:"sectionIndex"`
SectionHead common.Hash `json:"sectionHead"`
CHTRoot common.Hash `json:"chtRoot"`
BloomRoot common.Hash `json:"bloomRoot"`
}
// HashEqual returns an indicator comparing the itself hash with given one.
func (c *TrustedCheckpoint) HashEqual(hash common.Hash) bool {
if c.Empty() {
return hash == common.Hash{}
}
return c.Hash() == hash
}
// Hash returns the hash of checkpoint's four key fields(index, sectionHead, chtRoot and bloomTrieRoot).
func (c *TrustedCheckpoint) Hash() common.Hash {
var sectionIndex [8]byte
binary.BigEndian.PutUint64(sectionIndex[:], c.SectionIndex)
w := sha3.NewLegacyKeccak256()
w.Write(sectionIndex[:])
w.Write(c.SectionHead[:])
w.Write(c.CHTRoot[:])
w.Write(c.BloomRoot[:])
var h common.Hash
w.Sum(h[:0])
return h
}
// Empty returns an indicator whether the checkpoint is regarded as empty.
func (c *TrustedCheckpoint) Empty() bool {
return c.SectionHead == (common.Hash{}) || c.CHTRoot == (common.Hash{}) || c.BloomRoot == (common.Hash{})
}
// CheckpointOracleConfig represents a set of checkpoint contract(which acts as an oracle)
// config which used for light client checkpoint syncing.
type CheckpointOracleConfig struct {
Address common.Address `json:"address"`
Signers []common.Address `json:"signers"`
Threshold uint64 `json:"threshold"`
}
// 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.
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)
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)
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
ShanghaiBlock *big.Int `json:"shanghaiBlock,omitempty"` // Shanghai switch block (nil = no fork, 0 = already on shanghai)
CancunBlock *big.Int `json:"cancunBlock,omitempty"` // Cancun switch block (nil = no fork, 0 = already on cancun)
// 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"`
}
// EthashConfig is the consensus engine configs for proof-of-work based sealing.
type EthashConfig struct{}
// String implements the stringer interface, returning the consensus engine details.
func (c *EthashConfig) String() string {
return "ethash"
}
// CliqueConfig is the consensus engine configs for proof-of-authority based sealing.
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
}
// String implements the stringer interface, returning the consensus engine details.
func (c *CliqueConfig) String() string {
return "clique"
}
// Description returns a human-readable description of ChainConfig.
func (c *ChainConfig) Description() string {
var banner string
// Create some basinc network config output
network := NetworkNames[c.ChainID.String()]
if network == "" {
network = "unknown"
}
banner += fmt.Sprintf("Chain ID: %v (%s)\n", c.ChainID, network)
switch {
case c.Ethash != nil:
if c.TerminalTotalDifficulty == nil {
banner += "Consensus: Ethash (proof-of-work)\n"
} else if !c.TerminalTotalDifficultyPassed {
banner += "Consensus: Beacon (proof-of-stake), merging from Ethash (proof-of-work)\n"
} else {
banner += "Consensus: Beacon (proof-of-stake), merged from Ethash (proof-of-work)\n"
}
case c.Clique != nil:
if c.TerminalTotalDifficulty == nil {
banner += "Consensus: Clique (proof-of-authority)\n"
} else if !c.TerminalTotalDifficultyPassed {
banner += "Consensus: Beacon (proof-of-stake), merging from Clique (proof-of-authority)\n"
} else {
banner += "Consensus: Beacon (proof-of-stake), merged from Clique (proof-of-authority)\n"
}
default:
banner += "Consensus: unknown\n"
}
banner += "\n"
// Create a list of forks with a short description of them. Forks that only
// makes sense for mainnet should be optional at printing to avoid bloating
// the output for testnets and private networks.
banner += "Pre-Merge hard forks:\n"
banner += fmt.Sprintf(" - Homestead: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/homestead.md)\n", c.HomesteadBlock)
if c.DAOForkBlock != nil {
banner += fmt.Sprintf(" - DAO Fork: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/dao-fork.md)\n", c.DAOForkBlock)
}
banner += fmt.Sprintf(" - Tangerine Whistle (EIP 150): %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/tangerine-whistle.md)\n", c.EIP150Block)
banner += fmt.Sprintf(" - Spurious Dragon/1 (EIP 155): %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/spurious-dragon.md)\n", c.EIP155Block)
banner += fmt.Sprintf(" - Spurious Dragon/2 (EIP 158): %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/spurious-dragon.md)\n", c.EIP155Block)
banner += fmt.Sprintf(" - Byzantium: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/byzantium.md)\n", c.ByzantiumBlock)
banner += fmt.Sprintf(" - Constantinople: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/constantinople.md)\n", c.ConstantinopleBlock)
banner += fmt.Sprintf(" - Petersburg: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/petersburg.md)\n", c.PetersburgBlock)
banner += fmt.Sprintf(" - Istanbul: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/istanbul.md)\n", c.IstanbulBlock)
if c.MuirGlacierBlock != nil {
banner += fmt.Sprintf(" - Muir Glacier: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/muir-glacier.md)\n", c.MuirGlacierBlock)
}
banner += fmt.Sprintf(" - Berlin: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/berlin.md)\n", c.BerlinBlock)
banner += fmt.Sprintf(" - London: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/london.md)\n", c.LondonBlock)
if c.ArrowGlacierBlock != nil {
banner += fmt.Sprintf(" - Arrow Glacier: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/arrow-glacier.md)\n", c.ArrowGlacierBlock)
}
if c.GrayGlacierBlock != nil {
banner += fmt.Sprintf(" - Gray Glacier: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/gray-glacier.md)\n", c.GrayGlacierBlock)
}
if c.ShanghaiBlock != nil {
banner += fmt.Sprintf(" - Shanghai: %-8v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/shanghai.md)\n", c.ShanghaiBlock)
}
if c.CancunBlock != nil {
banner += fmt.Sprintf(" - Cancun: %-8v\n", c.CancunBlock)
}
banner += "\n"
// Add a special section for the merge as it's non-obvious
if c.TerminalTotalDifficulty == nil {
banner += "The Merge is not yet available for this network!\n"
banner += " - Hard-fork specification: https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/paris.md"
} else {
banner += "Merge configured:\n"
banner += " - Hard-fork specification: https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/paris.md\n"
banner += fmt.Sprintf(" - Network known to be merged: %v\n", c.TerminalTotalDifficultyPassed)
banner += fmt.Sprintf(" - Total terminal difficulty: %v\n", c.TerminalTotalDifficulty)
banner += fmt.Sprintf(" - Merge netsplit block: %-8v", c.MergeNetsplitBlock)
}
return banner
}
// IsHomestead returns whether num is either equal to the homestead block or greater.
func (c *ChainConfig) IsHomestead(num *big.Int) bool {
return isForked(c.HomesteadBlock, num)
}
// IsDAOFork returns whether num is either equal to the DAO fork block or greater.
func (c *ChainConfig) IsDAOFork(num *big.Int) bool {
return isForked(c.DAOForkBlock, num)
}
// IsEIP150 returns whether num is either equal to the EIP150 fork block or greater.
func (c *ChainConfig) IsEIP150(num *big.Int) bool {
return isForked(c.EIP150Block, num)
}
// IsEIP155 returns whether num is either equal to the EIP155 fork block or greater.
func (c *ChainConfig) IsEIP155(num *big.Int) bool {
return isForked(c.EIP155Block, num)
}
// IsEIP158 returns whether num is either equal to the EIP158 fork block or greater.
func (c *ChainConfig) IsEIP158(num *big.Int) bool {
return isForked(c.EIP158Block, num)
}
// IsByzantium returns whether num is either equal to the Byzantium fork block or greater.
func (c *ChainConfig) IsByzantium(num *big.Int) bool {
return isForked(c.ByzantiumBlock, num)
}
// IsConstantinople returns whether num is either equal to the Constantinople fork block or greater.
func (c *ChainConfig) IsConstantinople(num *big.Int) bool {
return isForked(c.ConstantinopleBlock, num)
}
// IsMuirGlacier returns whether num is either equal to the Muir Glacier (EIP-2384) fork block or greater.
func (c *ChainConfig) IsMuirGlacier(num *big.Int) bool {
return isForked(c.MuirGlacierBlock, num)
}
// IsPetersburg returns whether num is either
// - equal to or greater than the PetersburgBlock fork block,
// - OR is nil, and Constantinople is active
func (c *ChainConfig) IsPetersburg(num *big.Int) bool {
return isForked(c.PetersburgBlock, num) || c.PetersburgBlock == nil && isForked(c.ConstantinopleBlock, num)
}
// IsIstanbul returns whether num is either equal to the Istanbul fork block or greater.
func (c *ChainConfig) IsIstanbul(num *big.Int) bool {
return isForked(c.IstanbulBlock, num)
}
// IsBerlin returns whether num is either equal to the Berlin fork block or greater.
func (c *ChainConfig) IsBerlin(num *big.Int) bool {
return isForked(c.BerlinBlock, num)
}
// IsLondon returns whether num is either equal to the London fork block or greater.
func (c *ChainConfig) IsLondon(num *big.Int) bool {
return isForked(c.LondonBlock, num)
}
// IsArrowGlacier returns whether num is either equal to the Arrow Glacier (EIP-4345) fork block or greater.
func (c *ChainConfig) IsArrowGlacier(num *big.Int) bool {
return isForked(c.ArrowGlacierBlock, num)
}
// IsGrayGlacier returns whether num is either equal to the Gray Glacier (EIP-5133) fork block or greater.
func (c *ChainConfig) IsGrayGlacier(num *big.Int) bool {
return isForked(c.GrayGlacierBlock, num)
}
// IsTerminalPoWBlock returns whether the given block is the last block of PoW stage.
func (c *ChainConfig) IsTerminalPoWBlock(parentTotalDiff *big.Int, totalDiff *big.Int) bool {
if c.TerminalTotalDifficulty == nil {
return false
}
return parentTotalDiff.Cmp(c.TerminalTotalDifficulty) < 0 && totalDiff.Cmp(c.TerminalTotalDifficulty) >= 0
}
// IsShanghai returns whether num is either equal to the Shanghai fork block or greater.
func (c *ChainConfig) IsShanghai(num *big.Int) bool {
return isForked(c.ShanghaiBlock, num)
}
// IsCancun returns whether num is either equal to the Cancun fork block or greater.
func (c *ChainConfig) IsCancun(num *big.Int) bool {
return isForked(c.CancunBlock, num)
}
// CheckCompatible checks whether scheduled fork transitions have been imported
// with a mismatching chain configuration.
func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64) *ConfigCompatError {
bhead := new(big.Int).SetUint64(height)
// Iterate checkCompatible to find the lowest conflict.
var lasterr *ConfigCompatError
for {
err := c.checkCompatible(newcfg, bhead)
if err == nil || (lasterr != nil && err.RewindTo == lasterr.RewindTo) {
break
}
lasterr = err
bhead.SetUint64(err.RewindTo)
}
return lasterr
}
// 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 (c *ChainConfig) CheckConfigForkOrder() error {
type fork struct {
name string
block *big.Int
optional bool // if true, the fork may be nil and next fork is still allowed
}
var lastFork fork
for _, cur := range []fork{
{name: "homesteadBlock", block: c.HomesteadBlock},
{name: "daoForkBlock", block: c.DAOForkBlock, optional: true},
{name: "eip150Block", block: c.EIP150Block},
{name: "eip155Block", block: c.EIP155Block},
{name: "eip158Block", block: c.EIP158Block},
{name: "byzantiumBlock", block: c.ByzantiumBlock},
{name: "constantinopleBlock", block: c.ConstantinopleBlock},
{name: "petersburgBlock", block: c.PetersburgBlock},
{name: "istanbulBlock", block: c.IstanbulBlock},
{name: "muirGlacierBlock", block: c.MuirGlacierBlock, optional: true},
{name: "berlinBlock", block: c.BerlinBlock},
{name: "londonBlock", block: c.LondonBlock},
{name: "arrowGlacierBlock", block: c.ArrowGlacierBlock, optional: true},
{name: "grayGlacierBlock", block: c.GrayGlacierBlock, optional: true},
{name: "mergeNetsplitBlock", block: c.MergeNetsplitBlock, optional: true},
{name: "shanghaiBlock", block: c.ShanghaiBlock, optional: true},
{name: "cancunBlock", block: c.CancunBlock, optional: true},
} {
if lastFork.name != "" {
// Next one must be higher number
if lastFork.block == nil && cur.block != nil {
return fmt.Errorf("unsupported fork ordering: %v not enabled, but %v enabled at %v",
lastFork.name, cur.name, cur.block)
}
if lastFork.block != nil && cur.block != nil {
if lastFork.block.Cmp(cur.block) > 0 {
return fmt.Errorf("unsupported fork ordering: %v enabled at %v, but %v enabled at %v",
lastFork.name, lastFork.block, cur.name, cur.block)
}
}
}
// If it was optional and not set, then ignore it
if !cur.optional || cur.block != nil {
lastFork = cur
}
}
return nil
}
func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *ConfigCompatError {
if isForkIncompatible(c.HomesteadBlock, newcfg.HomesteadBlock, head) {
return newCompatError("Homestead fork block", c.HomesteadBlock, newcfg.HomesteadBlock)
}
if isForkIncompatible(c.DAOForkBlock, newcfg.DAOForkBlock, head) {
return newCompatError("DAO fork block", c.DAOForkBlock, newcfg.DAOForkBlock)
}
if c.IsDAOFork(head) && c.DAOForkSupport != newcfg.DAOForkSupport {
return newCompatError("DAO fork support flag", c.DAOForkBlock, newcfg.DAOForkBlock)
}
if isForkIncompatible(c.EIP150Block, newcfg.EIP150Block, head) {
return newCompatError("EIP150 fork block", c.EIP150Block, newcfg.EIP150Block)
}
if isForkIncompatible(c.EIP155Block, newcfg.EIP155Block, head) {
return newCompatError("EIP155 fork block", c.EIP155Block, newcfg.EIP155Block)
}
if isForkIncompatible(c.EIP158Block, newcfg.EIP158Block, head) {
return newCompatError("EIP158 fork block", c.EIP158Block, newcfg.EIP158Block)
}
if c.IsEIP158(head) && !configNumEqual(c.ChainID, newcfg.ChainID) {
return newCompatError("EIP158 chain ID", c.EIP158Block, newcfg.EIP158Block)
}
if isForkIncompatible(c.ByzantiumBlock, newcfg.ByzantiumBlock, head) {
return newCompatError("Byzantium fork block", c.ByzantiumBlock, newcfg.ByzantiumBlock)
}
if isForkIncompatible(c.ConstantinopleBlock, newcfg.ConstantinopleBlock, head) {
return newCompatError("Constantinople fork block", c.ConstantinopleBlock, newcfg.ConstantinopleBlock)
}
if isForkIncompatible(c.PetersburgBlock, newcfg.PetersburgBlock, head) {
// the only case where we allow Petersburg to be set in the past is if it is equal to Constantinople
// mainly to satisfy fork ordering requirements which state that Petersburg fork be set if Constantinople fork is set
if isForkIncompatible(c.ConstantinopleBlock, newcfg.PetersburgBlock, head) {
return newCompatError("Petersburg fork block", c.PetersburgBlock, newcfg.PetersburgBlock)
}
}
if isForkIncompatible(c.IstanbulBlock, newcfg.IstanbulBlock, head) {
return newCompatError("Istanbul fork block", c.IstanbulBlock, newcfg.IstanbulBlock)
}
if isForkIncompatible(c.MuirGlacierBlock, newcfg.MuirGlacierBlock, head) {
return newCompatError("Muir Glacier fork block", c.MuirGlacierBlock, newcfg.MuirGlacierBlock)
}
if isForkIncompatible(c.BerlinBlock, newcfg.BerlinBlock, head) {
return newCompatError("Berlin fork block", c.BerlinBlock, newcfg.BerlinBlock)
}
if isForkIncompatible(c.LondonBlock, newcfg.LondonBlock, head) {
return newCompatError("London fork block", c.LondonBlock, newcfg.LondonBlock)
}
if isForkIncompatible(c.ArrowGlacierBlock, newcfg.ArrowGlacierBlock, head) {
return newCompatError("Arrow Glacier fork block", c.ArrowGlacierBlock, newcfg.ArrowGlacierBlock)
}
if isForkIncompatible(c.GrayGlacierBlock, newcfg.GrayGlacierBlock, head) {
return newCompatError("Gray Glacier fork block", c.GrayGlacierBlock, newcfg.GrayGlacierBlock)
}
if isForkIncompatible(c.MergeNetsplitBlock, newcfg.MergeNetsplitBlock, head) {
return newCompatError("Merge netsplit fork block", c.MergeNetsplitBlock, newcfg.MergeNetsplitBlock)
}
if isForkIncompatible(c.ShanghaiBlock, newcfg.ShanghaiBlock, head) {
return newCompatError("Shanghai fork block", c.ShanghaiBlock, newcfg.ShanghaiBlock)
}
if isForkIncompatible(c.CancunBlock, newcfg.CancunBlock, head) {
return newCompatError("Cancun fork block", c.CancunBlock, newcfg.CancunBlock)
}
return nil
}
// isForkIncompatible returns true if a fork scheduled at s1 cannot be rescheduled to
// block s2 because head is already past the fork.
func isForkIncompatible(s1, s2, head *big.Int) bool {
return (isForked(s1, head) || isForked(s2, head)) && !configNumEqual(s1, s2)
}
// isForked returns whether a fork scheduled at block s is active at the given head block.
func isForked(s, head *big.Int) bool {
if s == nil || head == nil {
return false
}
return s.Cmp(head) <= 0
}
func configNumEqual(x, y *big.Int) bool {
if x == nil {
return y == nil
}
if y == nil {
return x == nil
}
return x.Cmp(y) == 0
}
// ConfigCompatError is raised if the locally-stored blockchain is initialised with a
// ChainConfig that would alter the past.
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
}
func newCompatError(what string, storedblock, newblock *big.Int) *ConfigCompatError {
var rew *big.Int
switch {
case storedblock == nil:
rew = newblock
case newblock == nil || storedblock.Cmp(newblock) < 0:
rew = storedblock
default:
rew = newblock
}
err := &ConfigCompatError{what, storedblock, newblock, 0}
if rew != nil && rew.Sign() > 0 {
err.RewindTo = rew.Uint64() - 1
}
return err
}
func (err *ConfigCompatError) Error() string {
return fmt.Sprintf("mismatching %s in database (have %d, want %d, rewindto %d)", err.What, err.StoredConfig, err.NewConfig, err.RewindTo)
}
// 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.
type Rules struct {
ChainID *big.Int
IsHomestead, IsEIP150, IsEIP155, IsEIP158 bool
IsByzantium, IsConstantinople, IsPetersburg, IsIstanbul bool
IsBerlin, IsLondon bool
IsMerge, IsShanghai, isCancun bool
}
// Rules ensures c's ChainID is not nil.
func (c *ChainConfig) Rules(num *big.Int, isMerge bool) Rules {
chainID := c.ChainID
if chainID == nil {
chainID = new(big.Int)
}
return Rules{
ChainID: new(big.Int).Set(chainID),
IsHomestead: c.IsHomestead(num),
IsEIP150: c.IsEIP150(num),
IsEIP155: c.IsEIP155(num),
IsEIP158: c.IsEIP158(num),
IsByzantium: c.IsByzantium(num),
IsConstantinople: c.IsConstantinople(num),
IsPetersburg: c.IsPetersburg(num),
IsIstanbul: c.IsIstanbul(num),
IsBerlin: c.IsBerlin(num),
IsLondon: c.IsLondon(num),
IsMerge: isMerge,
IsShanghai: c.IsShanghai(num),
isCancun: c.IsCancun(num),
}
}
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