# 冷兔复盘

**Published by:** [tp](https://paragraph.com/@tpwallet/)
**Published on:** 2022-01-19
**URL:** https://paragraph.com/@tpwallet/Goese3S0oTy50I49RHLw

## Content

转自 https://yixinrock.notion.site/XRC-Public-Sale-c1a4d178fabb43dcb0535448ae0134df 复盘 管理员在 14020984 14020997 区块操作两次 setStatus 管理员在 14020984 区块设置开始抢购、14020997 设置抢购结束 管理员的 setStatus 请求，被科学家打包进 bundle 执行 十个请求在 14020987 14020986 中成功执行 管理员请求在区块 index 位置，区块 456 笔请求，必须在同一个区块中才能抢到 以下账号抢到很多 https://etherscan.io/address/0x0bf8422f0a124e664f4ac2ec42cfe50afe8b8906 请求数 14020984: 456; 14020985: 900; 14020986: 130; 14020987: 418 参考 https://etherscan.io/block/14020997 https://etherscan.io/address/0x6f8139116b64b7fa056F141d0a3F3002eeb359Bc https://flashbots-explorer.marto.lol/?block=14020984 总结 区块排名前 12 的，科学家从 mempool 池将 setStatus 请求和自己的请求打包成 bundle 给 flashbot 后面的这位科学家，使用的可能是鸟枪法（开始之后、不断的发请求，如果抢购结束就取消） 步骤 批量给自己的地址转 ETH，如果不调整代码中的 gas price & gas limit，给个地址 0.2E 就够了 自己去 blocknative 注册一个账号，免费账号延迟比较高（2S） https://docs.blocknative.com/webhook-api/rate-limits 步骤 1 中的私钥填入 xrc.js 70 行，格式 [’1’, ‘2’, ‘3’] 步骤 2 中的私钥填入 xrc.js 43 行，务必替换掉，我用的免费账号，限额很小，别卷我！ process.env.PROVIDER_WSS_URL 也替换成自己的 rpc 运行代码 ☕️ 如何运行 yarn add ethers underscore bnc-sdk ws // 提前三分钟运行 node xrc.js 代码 // mainnet // https://etherscan.io/address/0x534d37c630b7e4d2a6c1e064f3a2632739e9ee04 // ownership // https://etherscan.io/address/0x6f8139116b64b7fa056F141d0a3F3002eeb359Bc - mempool 监听这个地址 // rinkeby // https://rinkeby.etherscan.io/address/0xe4f85223c4c81856988508d210fc62480de5352b#code /** 监听合约的 setStatus 操作，批量下单 */ /* TODO: 10 个地址每个转 0.2 source ~/.env_main 结束后统计成功率 删除私钥 */ import { ethers } from 'ethers' import _ from 'underscore' import BlocknativeSdk from 'bnc-sdk'; import WebSocket from 'ws'; import { abi } from './abi.js'; if (process.env.PROVIDER_WSS_URL === undefined) { console.error("Please provide PROVIDER_WSS_URL env") process.exit(1) } const contractAddress = '0x534d37c630b7e4d2a6c1e064f3a2632739e9ee04' const xrc_abi = [ 'function mint() payable', 'function balanceOf(address owner) view returns (uint256)' ] // rinkeby // replace networkId to 1 // replace admin_address to 0x6f8139116b64b7fa056F141d0a3F3002eeb359Bc const ADMIN_ADDRESS = "0x6f8139116b64b7fa056F141d0a3F3002eeb359Bc" const options = { dappId: 'fe96be23-dee0-4b98-b2a0-b6450886588b', networkId: 1, system: 'ethereum', ws: WebSocket, transactionHandlers: [async (event) => await go(event.transaction)], onerror: (error) => {console.error('error!!! ', error)} } // replace mint to setStatus const main = async () => { const sdk = new BlocknativeSdk(options) console.log('listening until error msg is seen...') await sdk.configuration({ scope: contractAddress, abi: abi, filters: [ { from: ADMIN_ADDRESS }, { "contractCall.methodName": "setStatus" }, { status: "confirmed" } // { status: "pending" } ], watchAddress: true }) } const go = async (txData) => { const arr = [ ] await Promise.all(arr.map(async v => await mintByPvKey(v))) } const mintByPvKey = async (privateKey) => { const provider = new ethers.providers.WebSocketProvider(process.env.PROVIDER_WSS_URL) const wallet = new ethers.Wallet(privateKey, provider) const account = wallet.connect(provider) const address = wallet.address console.log(now processssssing account ${address}...) const spacex = new ethers.Contract( contractAddress, xrc_abi, account ) const balance = async (address) => { const out = await spacex.balanceOf(address) console.log(debug: address ${address} has ${out} cnt of xrc) return out } const mint = async () => { const gasPrice = ethers.utils.parseUnits("900", "gwei") const address = wallet.address const gasLimit = 150000 const value = ethers.utils.parseEther("0.0502") const cost = ethers.utils.formatEther(gasPrice.mul(gasLimit).add(value)) console.log(`!!!!!!! address: ${address} will spent ${cost} ETH, and gasPrice is: ${gasPrice}`) try { const ba = await balance(address) if (ba > 0) { console.log(`address ${address} already got one!!!`) return } const tx = await spacex.mint({ gasPrice, gasLimit, value, }) const res = await tx.wait() if (res.status) { console.log(`Transaction receipt : https://www.etherscan.io/tx/${res.logs[1].transactionHash}\n`); } } catch (e) { console.log(e.message) } return } await mint() } await main() // process.exit(0) export const abi = [{"inputs":[{"internalType":"string","name":"initBaseURI","type":"string"},{"internalType":"address","name":"signer","type":"address"},{"internalType":"uint256","name":"_maxBatchSize","type":"uint256"},{"internalType":"uint256","name":"_collectionSize","type":"uint256"},{"internalType":"uint256","name":"_reserveAmount","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"newBaseURI","type":"string"}],"name":"BaseURIChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"minter","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Minted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"minter","type":"address"},{"indexed":false,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"ReservedToken","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"signer","type":"address"}],"name":"SignerChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"enum XRC.Status","name":"status","type":"uint8"}],"name":"StatusChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"balanceWithdrawn","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getOwnershipData","outputs":[{"components":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"uint64","name":"startTimestamp","type":"uint64"}],"internalType":"struct ERC721A.TokenOwnership","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxMint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextOwnerToExplicitlySet","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"numberMinted","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"string","name":"salt","type":"string"},{"internalType":"bytes","name":"token","type":"bytes"}],"name":"presaleMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"publicMinted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"reserve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"reserveAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"newBaseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"quantity","type":"uint256"}],"name":"setOwnersExplicit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"signer","type":"address"}],"name":"setSigner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum XRC.Status","name":"_status","type":"uint8"}],"name":"setStatus","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"status","outputs":[{"internalType":"enum XRC.Status","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokensReserved","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

## Publication Information

- [tp](https://paragraph.com/@tpwallet/): Publication homepage
- [All Posts](https://paragraph.com/@tpwallet/): More posts from this publication
- [RSS Feed](https://api.paragraph.com/blogs/rss/@tpwallet): Subscribe to updates
- [Twitter](https://twitter.com/xianyujiushiwo): Follow on Twitter