Mumbai EIP1559 22640000 - 22658574, 23799300 - 23800369

basefee.js

const { ethers } = require('ethers')
const fs = require('fs/promises')

const main = async () => {
  const provider = new ethers.providers.JsonRpcProvider('https://polygon-mumbai.infura.io/v3/...')
  const latestBlock = await provider.getBlock()
  let totalFees = 0
  let nextBaseFee = 9
  await fs.appendFile('/Users/qedk/dump2.csv', 'blockNumber,baseFee,fees\n')
  for (let i = 23799300; i <= latestBlock.number; i++) {
    const block = await provider.getBlock(i)
    const gasUsed = block.gasUsed.toNumber()
    const baseFee = block.baseFeePerGas.toNumber()
    const targetLimit = Math.floor(block.gasLimit.toNumber() / 2)
    const fees = gasUsed * baseFee
    console.assert(baseFee == nextBaseFee, 'Base fee does not match, block: ' + i)
    if (gasUsed > targetLimit) {
      gasDelta = gasUsed - targetLimit
      nextBaseFee = baseFee + Math.max(Math.floor(Math.floor((baseFee * gasDelta) / targetLimit) / 8), 1)
      console.log('📉 Adjust base fee, block:', i, 'baseFee:', baseFee, 'burnt:', fees)
    } else if (gasUsed < targetLimit) {
      gasDelta = targetLimit - gasUsed
      nextBaseFee = baseFee - Math.floor(Math.floor((baseFee * gasDelta) / targetLimit) / 8)
      console.log('📈 Adjust base fee, block:', i, 'baseFee:', baseFee, 'burnt:', fees)
    }
    totalFees += fees
    await fs.appendFile('/Users/qedk/dump2.csv', `${i},${baseFee},${fees}\n`)
  }
  console.log('Total MATIC burnt:', totalFees)
}

try {
  main()
} catch (err) {
  console.error(err)
  process.exit(1)
}

dump.csv

dump2.csv