token 송금

출처 ㅣ https://codeday.me/ko/qa/20190930/1507276.html

 

 

금요일 사용 했던 소스

const Web3 = require("web3"); const web3 = new Web3(new Web3.providers.HttpProvider("https://rinkeby.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537")); const toAddress = "0x7a0e3AB3c9626018850c06A099981F0B1f183D95"; const privateKey = "개인키"; web3.eth.accounts.signTransaction({       to: toAddress,       value: "300000000000000000",       chainId: 4,       gas: 210000   }, privateKey, function (err, result) {       if (err) {           console.error(err);           return;       }       console.log('rawTransaction ${result.rawTransaction}');       web3.eth.sendSignedTransaction(result.rawTransaction).on('receipt', console.log);   });

 

오늘 사용한 소스

var Web3 = require("web3") var web3 = new Web3("https://ropsten.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537") var privateKey = "개인키" const toAddress = "0x7a0e3AB3c9626018850c06A099981F0B1f183D95"; var tx = {  to: toAddress,  value: "300000000000000000",  chainId: 3,  gas: 21000 } const app = async () => {   try {    var signed = await web3.eth.accounts.signTransaction(tx, privateKey);    console.log('SIGN', web3.eth.sendSignedTransaction(signed.rawTransaction));   }catch (error) { console.log('Task Failure',error);  } }; app();

 

 

 

금요일까지 잘되던 소스가 안되어서 오후 내 종일 삽질했네

# chainId     0: Olympic, Ethereum public pre-release testnet     1: Frontier, Homestead, Metropolis, the Ethereum public main network     1: Classic, the (un)forked public Ethereum Classic main network, chain ID 61     1: Expanse, an alternative Ethereum implementation, chain ID 2     2: Morden, the public Ethereum testnet, now Ethereum Classic testnet     3: Ropsten, the public cross-client Ethereum testnet     4: Rinkeby, the public Geth PoA testnet     42: Kovan, the public Parity PoA testnet     77: Sokol, the public POA Network testnet     99: Core, the public POA Network main network     7762959: Musicoin, the music blockchain

 

바꿔서 실행해보고 안되면 또 삽질

 

 

 

 

 

어제 까지 잘 되었던 윗 소스가 오늘은 롭스톤에서 동작 안함

 

 

 

var Web3 = require("web3") var web3 = new Web3("https://rinkeby.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537") var privateKey = "0xA209084D071D63F598EB5C3A1B315CE8BDFED7906FF6D071CDADAB34244AAA69" const toAddress = "0x7a0e3AB3c9626018850c06A099981F0B1f183D95"; var tx = {  to: toAddress,  value: "300000000000000000",  chainId: 4,  gas: 21000,  gasLimit : 9000 } const app = async () => {   try {    var signed = await web3.eth.accounts.signTransaction(tx, privateKey);    console.log('SIGN', web3.eth.sendSignedTransaction(signed.rawTransaction));   }catch (error) { console.log('Task Failure',error);  } }; app();

 

린케비에서 개발 다하고 나중에 메인넷에 한번 붙어 볼까 함

생각 보다 POS 전환 테스트 이더리움이 테스트넷에서 진행하면 조금 불안하다는

생각이 듬

 

 

 

 

 

const Tx = require('ethereumjs-tx').Transaction var Web3 = require('web3') var web3 = new Web3(new Web3.providers.HttpProvider("https://rinkeby.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537")); // set token source, destination and amount var myAddress = "0x908C1B696B38B2647D93280d6b9deB951D61fA50" var toAddress = "0xFf0797D06e8F9897B1D5066C10D9497Ed7054A47" var amount = web3.utils.toHex(1e16) // get transaction count, later will used as nonce web3.eth.getTransactionCount(myAddress).then(function(v){console.log(v); count = v})  // set your private key here, we'll sign the transaction below var privateKey = new Buffer('개인키', 'hex')  // Get abi array here https://etherscan.io/address/0x86fa049857e0209aa7d9e616f7eb3b3b78ecfdb0#code var abiArray = [{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"}, {"constant":false,"inputs":[],"name":"stop","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"}, {"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"}, {"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"}, {"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"}, {"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}], "name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint128"}],"name":"push","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"name_","type":"bytes32"}],"name":"setName","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"mint","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"stopped","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"wad","type":"uint128"}],"name":"pull","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"burn","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"start","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"},{"name":"guy","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"symbol_","type":"bytes32"}],"payable":false,"type":"constructor"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}] // Here you may get the abicode from a string or a file, here is a string case // var abiArray = JSON.parse('[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"stop","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint128"}],"name":"push","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"name_","type":"bytes32"}],"name":"setName","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"mint","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"stopped","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"wad","type":"uint128"}],"name":"pull","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"burn","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"start","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"},{"name":"guy","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"symbol_","type":"bytes32"}],"payable":false,"type":"constructor"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]', 'utf-8') var contractAddress = '0xfcc242afa8d4f14c32d14798efc7110beadb1659' var contract = new web3.eth.Contract(abiArray, contractAddress, {from: myAddress})   web3.eth.getTransactionCount(myAddress, (err, txCount) => {     const app = async () => {     try {         var rawTransaction = {"from":myAddress,          "gasPrice":web3.utils.toHex(2 * 1e9),         "gasLimit":web3.utils.toHex(210000),         "to":contractAddress,"value":"0x0",         "data":contract.methods.transfer(toAddress, amount).encodeABI(),         "nonce":web3.utils.toHex(txCount)}         var transaction = new Tx(rawTransaction,{'chain':'rinkeby'})         transaction.sign(privateKey)         web3.eth.sendSignedTransaction('0x' + transaction.serialize().toString('hex'))         }catch (error) { console.log('Task Failure',error);         }     }     app(); }) // check the balance contract.methods.balanceOf(myAddress).call().then(function(balance){console.log(balance)})

 

- const Tx = require('ethereumjs-tx').Transaction

- var transaction = new Tx(rawTransaction,{'chain':'rinkeby'})

promise 뜨는 부분 함수로 바꾸었다.

예전 소스 안되어서 다시 구글링해서 만들었다.

 

 

 

 

 

https://rinkeby.etherscan.io/address/0xfcc242afa8d4f14c32d14798efc7110beadb1659

 

 

 

송금 전

 

 

 

 

송금 후

 

 

 

자바스크립트가 큰수를 처리 못해

amount 양이 적은경우가 있는데

아래 메세지가 나오는 경우

 

Task Failure { Error: invalid number value (arg="wad", coderType="uint256", value="19e16")

 

var tokens = 3
var amount = web3.utils.toWei(tokens.toString(), 'ether')

변경 가능 10^18까지 스트링으로 처리해서 위에 메타마스크 모습 처럼 송금 완료.

 

 

 

const Tx = require('ethereumjs-tx').Transaction var Web3 = require('web3') var web3 = new Web3(new Web3.providers.HttpProvider("https://rinkeby.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537")); // set token source, destination and amount var myAddress = "0x908C1B696B38B2647D93280d6b9deB951D61fA50" var toAddress = "0xFf0797D06e8F9897B1D5066C10D9497Ed7054A47" //var amount = web3.utils.toWei(1, 'ether'); var tokens = 3 var amount = web3.utils.toWei(tokens.toString(), 'ether')   // get transaction count, later will used as nonce web3.eth.getTransactionCount(myAddress).then(function(v){console.log(v); count = v})  // set your private key here, we'll sign the transaction below var privateKey = new Buffer('개윈퀴', 'hex')  // Get abi array here https://etherscan.io/address/0x86fa049857e0209aa7d9e616f7eb3b3b78ecfdb0#code var abiArray = [{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"}, {"constant":false,"inputs":[],"name":"stop","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"}, {"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"}, {"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"}, {"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"}, {"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}], "name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint128"}],"name":"push","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"name_","type":"bytes32"}],"name":"setName","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"mint","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"stopped","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"wad","type":"uint128"}],"name":"pull","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"burn","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"start","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"},{"name":"guy","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"symbol_","type":"bytes32"}],"payable":false,"type":"constructor"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}] // Here you may get the abicode from a string or a file, here is a string case // var abiArray = JSON.parse('[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"stop","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint128"}],"name":"push","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"name_","type":"bytes32"}],"name":"setName","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"mint","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"stopped","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"wad","type":"uint128"}],"name":"pull","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"burn","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"start","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"},{"name":"guy","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"symbol_","type":"bytes32"}],"payable":false,"type":"constructor"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]', 'utf-8') var contractAddress = '0xfcc242afa8d4f14c32d14798efc7110beadb1659' var contract = new web3.eth.Contract(abiArray, contractAddress, {from: myAddress})   web3.eth.getTransactionCount(myAddress, (err, txCount) => {     const app = async () => {     try {         var rawTransaction = {"from":myAddress,          "gasPrice":web3.utils.toHex(2 * 1e9),         "gasLimit":web3.utils.toHex(210000),         "to":contractAddress,"value":"0x0",         "data":contract.methods.transfer(toAddress, amount).encodeABI(),         "nonce":web3.utils.toHex(txCount)}         var transaction = new Tx(rawTransaction,{'chain':'rinkeby'})         transaction.sign(privateKey)         web3.eth.sendSignedTransaction('0x' + transaction.serialize().toString('hex'))         }catch (error) { console.log('Task Failure',error);         }     }     app(); }) // check the balance contract.methods.balanceOf(myAddress).call().then(function(balance){console.log(balance)})