mirror of
https://github.com/leporello-js/leporello-js
synced 2026-01-13 21:14:28 -08:00
29 lines
858 B
JavaScript
29 lines
858 B
JavaScript
import {ethers} from 'https://unpkg.com/ethers/dist/ethers.js'
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const URL = 'https://rpc.ankr.com/eth'
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const provider = await ethers.getDefaultProvider(URL)
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const latest = await provider.getBlock('latest')
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/*
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Find ethereum block by timestamp using binary search
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*/
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async function getBlockNumberByTimestamp(timestamp, low = 0, high = latest.number) {
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if(low + 1 == high) {
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return low
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} else {
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const mid = Math.floor((low + high) / 2)
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const midBlock = await provider.getBlock(mid)
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if(midBlock.timestamp > timestamp) {
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return getBlockNumberByTimestamp(timestamp, low, mid)
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} else {
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return getBlockNumberByTimestamp(timestamp, mid, high)
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}
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}
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}
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const timestamp = new Date('2019-06-01').getTime()/1000
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const blockNumber = await getBlockNumberByTimestamp(timestamp)
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const block = await provider.getBlock(blockNumber)
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