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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| { | ||
| "config": { | ||
| "chainId": 1, | ||
| "homesteadBlock": 0, | ||
| "eip150Block": 0, | ||
| "eip155Block": 0, | ||
| "eip158Block": 0, | ||
| "byzantiumBlock": 0, | ||
| "constantinopleBlock": 0, | ||
| "petersburgBlock": 0, | ||
| "istanbulBlock": 0, | ||
| "muirGlacierBlock": 0, | ||
| "berlinBlock": 0, | ||
| "londonBlock": 0, | ||
| "clique": { | ||
| "period": 5, | ||
| "epoch": 30000 | ||
| }, | ||
| "terminalTotalDifficulty": 0 | ||
| }, | ||
| "nonce": "0x42", | ||
| "timestamp": "0x0", | ||
| "extraData": "0x0000000000000000000000000000000000000000000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", | ||
| "gasLimit": "0x1C9C380", | ||
| "difficulty": "0x400000000", | ||
| "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000", | ||
| "coinbase": "0x0000000000000000000000000000000000000000", | ||
| "alloc": { | ||
| "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b": { "balance": "0x6d6172697573766477000000" } | ||
| }, | ||
| "number": "0x0", | ||
| "gasUsed": "0x0", | ||
| "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000", | ||
| "baseFeePerGas": "0x7" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| import { Blockchain } from '@ethereumjs/blockchain' | ||
| import { Common, parseGethGenesis } from '@ethereumjs/common' | ||
| import { bytesToHex, parseGethGenesisState } from '@ethereumjs/util' | ||
| import gethGenesisJson from './genesisData/post-merge.json' | ||
|
|
||
| const main = async () => { | ||
| // Load geth genesis json file into lets say `gethGenesisJson` | ||
| const common = Common.fromGethGenesis(gethGenesisJson, { chain: 'customChain' }) | ||
| const genesisState = parseGethGenesisState(gethGenesisJson) | ||
| const blockchain = await Blockchain.create({ | ||
| genesisState, | ||
| common, | ||
| }) | ||
| const genesisBlockHash = blockchain.genesisBlock.hash() | ||
| common.setForkHashes(genesisBlockHash) | ||
| console.log( | ||
| `Genesis hash from geth genesis parameters - ${bytesToHex(blockchain.genesisBlock.hash())}` | ||
| ) | ||
| } | ||
|
|
||
| main() |
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| import { Block } from '@ethereumjs/block' | ||
| import { Blockchain } from '@ethereumjs/blockchain' | ||
| import { Common, Hardfork } from '@ethereumjs/common' | ||
| import { bytesToHex } from '@ethereumjs/util' | ||
|
|
||
| const main = async () => { | ||
| const common = new Common({ chain: 'mainnet', hardfork: Hardfork.London }) | ||
| // Use the safe static constructor which awaits the init method | ||
| const blockchain = await Blockchain.create({ | ||
| validateBlocks: false, // Skipping validation so we can make a simple chain without having to provide complete blocks | ||
| validateConsensus: false, | ||
| common, | ||
| }) | ||
|
|
||
| // We use minimal data to provide a sequence of blocks (increasing number, difficulty, and then setting parent hash to previous block) | ||
| const block = Block.fromBlockData( | ||
| { | ||
| header: { | ||
| number: 1n, | ||
| parentHash: blockchain.genesisBlock.hash(), | ||
| difficulty: blockchain.genesisBlock.header.difficulty + 1n, | ||
| }, | ||
| }, | ||
| { common, setHardfork: true } | ||
| ) | ||
| const block2 = Block.fromBlockData( | ||
| { | ||
| header: { | ||
| number: 2n, | ||
| parentHash: block.header.hash(), | ||
| difficulty: block.header.difficulty + 1n, | ||
| }, | ||
| }, | ||
| { common, setHardfork: true } | ||
| ) | ||
| // See @ethereumjs/block for more details on how to create a block | ||
| await blockchain.putBlock(block) | ||
| await blockchain.putBlock(block2) | ||
|
|
||
| // We iterate over the blocks in the chain to the current head (block 2) | ||
| await blockchain.iterator('i', (block) => { | ||
| const blockNumber = block.header.number.toString() | ||
| const blockHash = bytesToHex(block.hash()) | ||
| console.log(`Block ${blockNumber}: ${blockHash}`) | ||
| }) | ||
|
|
||
| // Block 1: 0xa1a061528d74ba81f560e1ebc4f29d6b58171fc13b72b876cdffe6e43b01bdc5 | ||
| // Block 2: 0x5583be91cf9fb14f5dbeb03ad56e8cef19d1728f267c35a25ba5a355a528f602 | ||
| } | ||
| main() |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| import { Chain, Common, Hardfork } from '@ethereumjs/common' | ||
|
|
||
| // With enums: | ||
| const commonWithEnums = new Common({ chain: Chain.Mainnet, hardfork: Hardfork.London }) | ||
|
|
||
| // (also possible with directly passing in strings:) | ||
| const commonWithStrings = new Common({ chain: 'mainnet', hardfork: 'london' }) | ||
|
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||
| // Instantiate with the chain (and the default hardfork) | ||
| let c = new Common({ chain: Chain.Mainnet }) | ||
| console.log(`The gas price for ecAdd is ${c.param('gasPrices', 'ecAddGas')}`) // 500 | ||
|
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| // Chain and hardfork provided | ||
| c = new Common({ chain: Chain.Mainnet, hardfork: Hardfork.Byzantium }) | ||
| console.log(`The miner reward under PoW on Byzantium us ${c.param('pow', 'minerReward')}`) // 3000000000000000000 | ||
|
|
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| // Get bootstrap nodes for chain/network | ||
| console.log('Below are the known bootstrap nodes') | ||
| console.log(c.bootstrapNodes()) // Array with current nodes | ||
|
|
||
| // Instantiate with an EIP activated | ||
| c = new Common({ chain: Chain.Mainnet, eips: [4844] }) | ||
| console.log(`EIP 4844 is active -- ${c.isActivatedEIP(4844)}`) | ||
|
|
||
| // Instantiate common with custom chainID | ||
| const commonWithCustomChainId = Common.custom({ chainId: 1234 }) | ||
| console.log(`The current chain ID is ${commonWithCustomChainId.chainId}`) |
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