NFTMintChainbreaker.js

import Web3 from 'web3'

// contract abi

import * as Ring from './abi/ring.json'
import * as Item from './abi/item.json'
import * as Unit from './abi/Unit.json'

const addresses = [
  '0x972e633f5f6f62d1f2a13977f113941fcb3b606b',
  '0x5c4eab549a528bf15c47a01e174500010997235c',
  '0xf0fc268473a4ffaf2a652c3a8510bf79b787a68f',
]

const API_KEY = ``
const PRIV_KEY = ``

let main = async function() {
  // mainnet provider
  let web3 = new Web3(`https://mainnet.infura.io/v3/${API_KEY}`)

  // matic provider
  let web3Child = new Web3('https://testnet2.matic.network')

  // mainnet contract
  let CBU = new web3.eth.Contract(
    Unit.abi,
    '0x23766996636058b41a041d441ce1217c694f5aa9'
  )
  // matic contract
  let CBUChild = new web3Child.eth.Contract(
    Unit.abi,
    '0x20Cf76B0C99B3a3EF14c813d016D46d9F9eB599A'
  )

  for (let i = 0; i < addresses.length; i++) {
    let key = addresses[i]
    let N = await CBU.methods.balanceOf(key).call()
    for (let j = 0; j < N; j++) {
      const tokenId = await CBU.methods.tokenOfOwnerByIndex(key, j).call()
      const _classId = await CBU.methods.getUnitById(tokenId).call()
      const txObj = CBUChild.methods.mintUnitFromServer(_classId.dataId, key)
      const encodedABI = txObj.encodeABI()

      console.log('mintUnitFromServer', _classId.dataId, key)

      const tx = {
        from: '0xB0AcBFdb874d04E91B8087C2BcDa147b96d63c01',
        to: '0x20Cf76B0C99B3a3EF14c813d016D46d9F9eB599A',
        gas: 8000000,
        data: encodedABI,
      }

      const signedTx = await web3Child.eth.accounts.signTransaction(
        tx,
        PRIV_KEY
      )
      const receipt = await web3Child.eth.sendSignedTransaction(
        signedTx.rawTransaction
      )
      console.log(receipt.transactionHash)
    }
  }
}

main()