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Mark Odayan markodayan

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🅱️lonkchains and distributed systems. Writing code once in a blue moon

markodayan / 15_122_367.json

Last active December 3, 2023 07:30

1559 Block

	{
	"baseFeePerGas":"0x2be5fed13e",
	"difficulty":"0x281030ebe089b5",
	"extraData":"0x6575726f70652d63656e7472616c322d676e7637",
	"gasLimit":"0x1c9c380",
	"gasUsed":"0x695d2c",
	"hash":"0x01176f73081379cfd9d8bcee1c7e822b66f4d71160900d7f963619c42716cd83",
	"logsBloom":"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",
	"miner":"0xea674fdde714fd979de3edf0f56aa9716b898ec8",
	"mixHash":"0x151624c46d33ac76f36d3e365487ab78f0a9847f6b16b0775e36a9c9dbb3f520",

markodayan / tuple.ts

Created August 22, 2022 03:50

Prepare Block Tuple

	function prepareBlockTuple(block: IRawBlock): ILegacyBlockTuple \| IPost1559Tuple {
	const blockNumber = parseInt(block.number, 16);

	const tuple = [
	block.parentHash,
	block.sha3Uncles,
	block.miner,
	block.stateRoot,
	block.transactionsRoot,
	block.receiptsRoot,

markodayan / block-tuples.ts

Created August 22, 2022 04:02

Tuples Generated

	// Legacy Block (Block Number = 12 964 874)
	[
	'0x4b0a0331740041e0a110fb20295878a56e3ff9c52b4fabddb3f9ebb56ed664e0',
	'0x0eab1b145a087ad364aed20c2a313347afb5eb69ddaef3503f4d5b2c1be7c6c7',
	'0xea674fdde714fd979de3edf0f56aa9716b898ec8',
	'0xb51018a3b2723021f90de0c0461ea172c4d0477ccdf333d0bc0dad11b689e34c',
	'0x9b66b32f7d4cf7f5a80614e27ae874879c04136e0a9400c1b59e0cff13f71bec',
	'0x2922269aa89c5df859a38e168dbdce0e07a7ccb651f9ffcb6c6b1e74eaf7e069',
	'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',
	'0x1b315bd824e5e8',

markodayan / calc-block-header.ts

Created August 22, 2022 04:06

Calculate Ethereum block header

	import createKeccakHash from 'keccak';

	function calculateBlockHeader(block: IRawBlock): string {
	const tuple = prepareBlockTuple(block);
	const encoded = Buffer.from(encode(tuple));
	const calculated = createKeccakHash('keccak256').update(encoded).digest('hex');
	return '0x' + calculated;
	}

markodayan / verify-bh.ts

Created August 22, 2022 04:15

Verify block header

	function verifyBlockHeader(block: IRawBlock): boolean {
	const expected = block.hash;
	const calculated = calculateBlockHeader(block);

	return expected === calculated;
	}

markodayan / L2OutputOracle.sol

Created February 28, 2023 07:34

L2 Output Oracle (replaces the State Commitment Chain. Will be used to receive fault proof data)

	//SPDX-License-Identifier: MIT
	// https://community.optimism.io/docs/developers/bedrock/differences/#l1-contracts
	pragma solidity 0.8.10;

	import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";

	/**
	* @title L2OutputOracle
	* @notice The L2 state is committed to in this contract
	* The payable keyword is used on appendL2Output to save gas on the msg.value check.

markodayan / actions.yaml

Created September 9, 2023 12:34

Bun GitHub Actions