// 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 . 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, new(big.Int)) ) // 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 CancunBlock *big.Int `json:"cancunBlock,omitempty"` // Cancun switch block (nil = no fork, 0 = already on cancun) // Fork scheduling was switched from blocks to timestamps here ShanghaiTime *big.Int `json:"shanghaiTime,omitempty"` // Shanghai switch time (nil = no fork, 0 = already on shanghai) // 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 (block based):\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) } 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\n" } 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) if c.MergeNetsplitBlock != nil { banner += fmt.Sprintf(" - Merge netsplit block: #%-8v\n", c.MergeNetsplitBlock) } } banner += "\n" // Create a list of forks post-merge banner += "Post-Merge hard forks (timestamp based):\n" if c.ShanghaiTime != nil { banner += fmt.Sprintf(" - Shanghai: @%-10v (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/shanghai.md)\n", c.ShanghaiTime) } if c.CancunBlock != nil { banner += fmt.Sprintf(" - Cancun: @%-10v\n", c.CancunBlock) } return banner } // IsHomestead returns whether num is either equal to the homestead block or greater. func (c *ChainConfig) IsHomestead(num *big.Int) bool { return isBlockForked(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 isBlockForked(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 isBlockForked(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 isBlockForked(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 isBlockForked(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 isBlockForked(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 isBlockForked(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 isBlockForked(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 isBlockForked(c.PetersburgBlock, num) || c.PetersburgBlock == nil && isBlockForked(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 isBlockForked(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 isBlockForked(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 isBlockForked(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 isBlockForked(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 isBlockForked(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 } // IsCancun returns whether num is either equal to the Cancun fork block or greater. func (c *ChainConfig) IsCancun(num *big.Int) bool { return isBlockForked(c.CancunBlock, num) } // IsShanghai returns whether time is either equal to the Shanghai fork time or greater. func (c *ChainConfig) IsShanghai(time *big.Int) bool { return isTimestampForked(c.ShanghaiTime, time) } // CheckCompatible checks whether scheduled fork transitions have been imported // with a mismatching chain configuration. func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64, time uint64) *ConfigCompatError { var ( bhead = new(big.Int).SetUint64(height) btime = new(big.Int).SetUint64(time) ) // Iterate checkCompatible to find the lowest conflict. var lasterr *ConfigCompatError for { err := c.checkCompatible(newcfg, bhead, btime) if err == nil || (lasterr != nil && err.RewindToBlock == lasterr.RewindToBlock && err.RewindToTime == lasterr.RewindToTime) { break } lasterr = err if err.RewindToTime > 0 { btime.SetUint64(err.RewindToTime) } else { bhead.SetUint64(err.RewindToBlock) } } 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 // forks up to - and including the merge - were defined with block numbers timestamp *big.Int // forks after the merge are scheduled using timestamps 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: "cancunBlock", block: c.CancunBlock, optional: true}, {name: "shanghaiTime", timestamp: c.ShanghaiTime}, } { if lastFork.name != "" { switch { // Non-optional forks must all be present in the chain config up to the last defined fork case lastFork.block == nil && lastFork.timestamp == nil && (cur.block != nil || cur.timestamp != nil): if cur.block != nil { return fmt.Errorf("unsupported fork ordering: %v not enabled, but %v enabled at block %v", lastFork.name, cur.name, cur.block) } else { return fmt.Errorf("unsupported fork ordering: %v not enabled, but %v enabled at timestamp %v", lastFork.name, cur.name, cur.timestamp) } // Fork (whether defined by block or timestamp) must follow the fork definition sequence case (lastFork.block != nil && cur.block != nil) || (lastFork.timestamp != nil && cur.timestamp != nil): if lastFork.block != nil && lastFork.block.Cmp(cur.block) > 0 { return fmt.Errorf("unsupported fork ordering: %v enabled at block %v, but %v enabled at block %v", lastFork.name, lastFork.block, cur.name, cur.block) } else if lastFork.timestamp != nil && lastFork.timestamp.Cmp(cur.timestamp) > 0 { return fmt.Errorf("unsupported fork ordering: %v enabled at timestamp %v, but %v enabled at timestamp %v", lastFork.name, lastFork.timestamp, cur.name, cur.timestamp) } // Timestamp based forks can follow block based ones, but not the other way around if lastFork.timestamp != nil && cur.block != nil { return fmt.Errorf("unsupported fork ordering: %v used timestamp ordering, but %v reverted to block ordering", lastFork.name, cur.name) } } } // If it was optional and not set, then ignore it if !cur.optional || (cur.block != nil || cur.timestamp != nil) { lastFork = cur } } return nil } func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, headNumber *big.Int, headTimestamp *big.Int) *ConfigCompatError { if isForkBlockIncompatible(c.HomesteadBlock, newcfg.HomesteadBlock, headNumber) { return newBlockCompatError("Homestead fork block", c.HomesteadBlock, newcfg.HomesteadBlock) } if isForkBlockIncompatible(c.DAOForkBlock, newcfg.DAOForkBlock, headNumber) { return newBlockCompatError("DAO fork block", c.DAOForkBlock, newcfg.DAOForkBlock) } if c.IsDAOFork(headNumber) && c.DAOForkSupport != newcfg.DAOForkSupport { return newBlockCompatError("DAO fork support flag", c.DAOForkBlock, newcfg.DAOForkBlock) } if isForkBlockIncompatible(c.EIP150Block, newcfg.EIP150Block, headNumber) { return newBlockCompatError("EIP150 fork block", c.EIP150Block, newcfg.EIP150Block) } if isForkBlockIncompatible(c.EIP155Block, newcfg.EIP155Block, headNumber) { return newBlockCompatError("EIP155 fork block", c.EIP155Block, newcfg.EIP155Block) } if isForkBlockIncompatible(c.EIP158Block, newcfg.EIP158Block, headNumber) { return newBlockCompatError("EIP158 fork block", c.EIP158Block, newcfg.EIP158Block) } if c.IsEIP158(headNumber) && !configBlockEqual(c.ChainID, newcfg.ChainID) { return newBlockCompatError("EIP158 chain ID", c.EIP158Block, newcfg.EIP158Block) } if isForkBlockIncompatible(c.ByzantiumBlock, newcfg.ByzantiumBlock, headNumber) { return newBlockCompatError("Byzantium fork block", c.ByzantiumBlock, newcfg.ByzantiumBlock) } if isForkBlockIncompatible(c.ConstantinopleBlock, newcfg.ConstantinopleBlock, headNumber) { return newBlockCompatError("Constantinople fork block", c.ConstantinopleBlock, newcfg.ConstantinopleBlock) } if isForkBlockIncompatible(c.PetersburgBlock, newcfg.PetersburgBlock, headNumber) { // 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 isForkBlockIncompatible(c.ConstantinopleBlock, newcfg.PetersburgBlock, headNumber) { return newBlockCompatError("Petersburg fork block", c.PetersburgBlock, newcfg.PetersburgBlock) } } if isForkBlockIncompatible(c.IstanbulBlock, newcfg.IstanbulBlock, headNumber) { return newBlockCompatError("Istanbul fork block", c.IstanbulBlock, newcfg.IstanbulBlock) } if isForkBlockIncompatible(c.MuirGlacierBlock, newcfg.MuirGlacierBlock, headNumber) { return newBlockCompatError("Muir Glacier fork block", c.MuirGlacierBlock, newcfg.MuirGlacierBlock) } if isForkBlockIncompatible(c.BerlinBlock, newcfg.BerlinBlock, headNumber) { return newBlockCompatError("Berlin fork block", c.BerlinBlock, newcfg.BerlinBlock) } if isForkBlockIncompatible(c.LondonBlock, newcfg.LondonBlock, headNumber) { return newBlockCompatError("London fork block", c.LondonBlock, newcfg.LondonBlock) } if isForkBlockIncompatible(c.ArrowGlacierBlock, newcfg.ArrowGlacierBlock, headNumber) { return newBlockCompatError("Arrow Glacier fork block", c.ArrowGlacierBlock, newcfg.ArrowGlacierBlock) } if isForkBlockIncompatible(c.GrayGlacierBlock, newcfg.GrayGlacierBlock, headNumber) { return newBlockCompatError("Gray Glacier fork block", c.GrayGlacierBlock, newcfg.GrayGlacierBlock) } if isForkBlockIncompatible(c.MergeNetsplitBlock, newcfg.MergeNetsplitBlock, headNumber) { return newBlockCompatError("Merge netsplit fork block", c.MergeNetsplitBlock, newcfg.MergeNetsplitBlock) } if isForkBlockIncompatible(c.CancunBlock, newcfg.CancunBlock, headNumber) { return newBlockCompatError("Cancun fork block", c.CancunBlock, newcfg.CancunBlock) } if isForkTimestampIncompatible(c.ShanghaiTime, newcfg.ShanghaiTime, headTimestamp) { return newTimestampCompatError("Shanghai fork timestamp", c.ShanghaiTime, newcfg.ShanghaiTime) } return nil } // BaseFeeChangeDenominator bounds the amount the base fee can change between blocks. func (c *ChainConfig) BaseFeeChangeDenominator() uint64 { return DefaultBaseFeeChangeDenominator } // ElasticityMultiplier bounds the maximum gas limit an EIP-1559 block may have. func (c *ChainConfig) ElasticityMultiplier() uint64 { return DefaultElasticityMultiplier } // isForkBlockIncompatible returns true if a fork scheduled at block s1 cannot be // rescheduled to block s2 because head is already past the fork. func isForkBlockIncompatible(s1, s2, head *big.Int) bool { return (isBlockForked(s1, head) || isBlockForked(s2, head)) && !configBlockEqual(s1, s2) } // isBlockForked returns whether a fork scheduled at block s is active at the // given head block. Whilst this method is the same as isTimestampForked, they // are explicitly separate for clearer reading. func isBlockForked(s, head *big.Int) bool { if s == nil || head == nil { return false } return s.Cmp(head) <= 0 } func configBlockEqual(x, y *big.Int) bool { if x == nil { return y == nil } if y == nil { return x == nil } return x.Cmp(y) == 0 } // isForkTimestampIncompatible returns true if a fork scheduled at timestamp s1 // cannot be rescheduled to timestamp s2 because head is already past the fork. func isForkTimestampIncompatible(s1, s2, head *big.Int) bool { return (isTimestampForked(s1, head) || isTimestampForked(s2, head)) && !configTimestampEqual(s1, s2) } // isTimestampForked returns whether a fork scheduled at timestamp s is active // at the given head timestamp. Whilst this method is the same as isBlockForked, // they are explicitly separate for clearer reading. func isTimestampForked(s, head *big.Int) bool { if s == nil || head == nil { return false } return s.Cmp(head) <= 0 } func configTimestampEqual(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 if block based forking StoredBlock, NewBlock *big.Int // timestamps of the stored and new configurations if time based forking StoredTime, NewTime *big.Int // 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 } func newBlockCompatError(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: what, StoredBlock: storedblock, NewBlock: newblock, RewindToBlock: 0, } if rew != nil && rew.Sign() > 0 { err.RewindToBlock = rew.Uint64() - 1 } return err } func newTimestampCompatError(what string, storedtime, newtime *big.Int) *ConfigCompatError { var rew *big.Int switch { case storedtime == nil: rew = newtime case newtime == nil || storedtime.Cmp(newtime) < 0: rew = storedtime default: rew = newtime } err := &ConfigCompatError{ What: what, StoredTime: storedtime, NewTime: newtime, RewindToTime: 0, } if rew != nil && rew.Sign() > 0 { err.RewindToTime = rew.Uint64() - 1 } return err } func (err *ConfigCompatError) Error() string { if err.StoredBlock != nil { return fmt.Sprintf("mismatching %s in database (have block %d, want block %d, rewindto block %d)", err.What, err.StoredBlock, err.NewBlock, err.RewindToBlock) } return fmt.Sprintf("mismatching %s in database (have timestamp %d, want timestamp %d, rewindto timestamp %d)", err.What, err.StoredTime, err.NewTime, err.RewindToTime) } // 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, timestamp *big.Int) 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(timestamp), isCancun: c.IsCancun(num), } }