xinfin: bounties integration

[thelostone-mc]

Description

This PR integrated the xinfin blockchain onto Gitcoin Bounties.
Funtionallity added:

• Funder to create a bounty using XDC tokens (permission/permisionless, contest/coop/traditional)
• Bounty Hunters to apply on bounty -> start work -> submit work
• Funder to review work and payout the bounty

---

• Adds Xinfin in hackathon/bounty form
• Backend logic to check with blockexplorer API (needs API KEY)
• Frontend + Backend Wiring

---

• Chain ID: 50
• Token: XDC
• Decimals: 18
• Coingecko: xdce-crowd-sale

Testing

https://share.vidyard.com/watch/F2qDBEijVCBVVbAn13PbTy?

[thelostone-mc]

// SET PROVIDER
const xinfinHost = "https://rpc.xinfin.network";
const xinfinClient = new Web3();
xinfinClient.setProvider(
new xinfinClient.providers.HttpProvider(xinfinHost)
);

================

// GET DEFAULT ADDRESS
console.log(ethereum.selectedAddress) // is null
console.log(xinfinClient.eth.defaultAccount) // is null

================

// GET BALANCE OF ADDRESS

// from xinpay -> if public address is xdc306eb661a29a19d269adcfa73b5afd98b80f47fd
balanceInWei = await xinfinClient.eth.getBalance("xdc306eb661a29a19d269adcfa73b5afd98b80f47fd");
// this fails with msg : Uncaught Error: Provided address "xdc306eb661a29a19d269adcfa73b5afd98b80f47fd" is invalid, the capitalization checksum test failed, or its an indrect IBAN address which can't be converted.

balanceInWei = await xinfinClient.eth.getBalance("306eb661a29a19d269adcfa73b5afd98b80f47fd"); // THIS WORKS

================
  
// SEND TRANSACTION

let txArgs = {
      to: "0x306eb661a29a19d269adcfa73b5afd98b80f47fd",
      from: "0xe4114df461966189d2765b8bf0919a96f02ff8ca",
      value: xinfinClient.utils.toWei(String(amount)),
      // gasPrice: xinfinClient.utils.toHex(await xinfinClient.eth.getGasPrice()),
      // gas: xinfinClient.utils.toHex(318730),
      // gasLimit: xinfinClient.utils.toHex(318730)
 };

xinfinClient.eth.sendTransaction(
    txArgs,
    (error, result) => console.log(error, result)
 );

If I attempt to do sendTransaction, I get error unknown account

PS: if I add the prefix XDC on sendTransaction -> it fails with
The Uncaught Error: Provided address "xdc306eb661a29a19d269adcfa73b5afd98b80f47fd" is invalid, the capitalization checksum test failed, or its an indrect IBAN address which can't be converted. happens when i attempt to invoke transfer function as well. I assume there is a function I would need to convert the address from xinpay to a suitable format

[rudreshsolanki97]

Hello,

Inorder to interact with XinFin blockchain we'll have to use XinFin's fork of web3 library xdc3 ( Link ).
Being a fork of web3, it has identical interface.

[chibie]

nice job man! lgtm!

did you also test the backend sync function? it wasn't captured in the vid

[thelostone-mc]

@chibie oh yup ! it did work 🙌
the txn got confirmed pretty quick, so I didn't have to run the sync command