├── Article.md ├── web ├── src │ ├── css │ │ └── index.css │ ├── assets │ │ ├── logo.png │ │ └── chainstack-white.svg │ ├── main.ts │ ├── env.d.ts │ ├── stores │ │ ├── wallet.ts │ │ └── global.ts │ ├── router │ │ └── index.ts │ ├── App.vue │ ├── components │ │ ├── Nav.vue │ │ ├── Footer.vue │ │ ├── WalletConnect.vue │ │ └── Navbar.vue │ └── views │ │ ├── Origin.vue │ │ └── Destination.vue ├── public │ └── favicon.ico ├── postcss.config.js ├── .gitignore ├── tailwind.config.js ├── vite.config.ts ├── index.html ├── tsconfig.json └── package.json ├── backend ├── .gitignore ├── package.json ├── contracts │ └── QChainstackDollars.sol ├── event-watcher.js ├── contract-methods.js ├── ChainstackDollars.json └── DChainstackDollars.json ├── .gitignore ├── solidity ├── .gitignore ├── test │ ├── sample-test.js │ ├── OriginToken.spec.js │ └── DestinationToken.spec.js ├── contracts │ ├── OriginToken.sol │ └── DestinationToken.sol ├── package.json ├── scripts │ ├── deployOrigin.js │ ├── deployDestination.js │ └── sample-script.js └── hardhat.config.js └── README.md /Article.md: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /web/src/css/index.css: -------------------------------------------------------------------------------- 1 | @tailwind base; 2 | @tailwind components; 3 | @tailwind utilities; 4 | -------------------------------------------------------------------------------- /web/public/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/alinkon0207/eth_bridge/HEAD/web/public/favicon.ico -------------------------------------------------------------------------------- /backend/.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | .DS_Store 3 | dist 4 | dist-ssr 5 | *.local 6 | .vscode 7 | .env 8 | -------------------------------------------------------------------------------- /web/src/assets/logo.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/alinkon0207/eth_bridge/HEAD/web/src/assets/logo.png -------------------------------------------------------------------------------- /web/postcss.config.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | plugins: { 3 | tailwindcss: {}, 4 | autoprefixer: {}, 5 | }, 6 | } 7 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | .DS_Store 3 | dist 4 | dist-ssr 5 | *.local 6 | .vscode 7 | .env 8 | *.env 9 | Notes.md 10 | -------------------------------------------------------------------------------- /web/.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | .DS_Store 3 | *.DS_Store 4 | dist 5 | dist-ssr 6 | *.local 7 | .vscode 8 | .env 9 | *.env 10 | -------------------------------------------------------------------------------- /solidity/.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | .env 3 | coverage 4 | coverage.json 5 | typechain 6 | 7 | #Hardhat files 8 | cache 9 | artifacts 10 | -------------------------------------------------------------------------------- /web/tailwind.config.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | content: ['./index.html', './src/**/*.{vue,js,ts,jsx,tsx}'], 3 | theme: { 4 | extend: {}, 5 | }, 6 | plugins: [require('@tailwindcss/forms')], 7 | } 8 | -------------------------------------------------------------------------------- /web/src/main.ts: -------------------------------------------------------------------------------- 1 | import { createApp } from 'vue' 2 | import App from './App.vue' 3 | 4 | import router from './router' 5 | 6 | import './css/index.css' 7 | 8 | import { createPinia } from 'pinia' 9 | 10 | createApp(App).use(router).use(createPinia()).mount('#app') 11 | -------------------------------------------------------------------------------- /web/src/env.d.ts: -------------------------------------------------------------------------------- 1 | /// 2 | 3 | declare module '*.vue' { 4 | import { DefineComponent } from 'vue' 5 | // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/ban-types 6 | const component: DefineComponent<{}, {}, any> 7 | export default component 8 | } 9 | -------------------------------------------------------------------------------- /web/vite.config.ts: -------------------------------------------------------------------------------- 1 | import { defineConfig } from 'vite' 2 | import vue from '@vitejs/plugin-vue' 3 | 4 | import path from 'path' 5 | 6 | // https://vitejs.dev/config/ 7 | export default defineConfig({ 8 | plugins: [vue()], 9 | resolve: { 10 | alias: { 11 | '@/': `${path.resolve(__dirname, 'src')}/`, 12 | }, 13 | }, 14 | }) 15 | -------------------------------------------------------------------------------- /backend/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "backend", 3 | "version": "1.0.0", 4 | "description": "", 5 | "main": "event-watcher.js", 6 | "scripts": { 7 | "start": "node event-watcher.js", 8 | "test": "echo \"Error: no test specified\" && exit 1" 9 | }, 10 | "author": "", 11 | "license": "ISC", 12 | "dependencies": { 13 | "dotenv": "^16.0.0", 14 | "web3": "^1.7.0" 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /web/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | Blockchain bridge 8 | 9 | 10 |
11 | 12 | 13 | 14 | -------------------------------------------------------------------------------- /web/tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | "target": "esnext", 4 | "useDefineForClassFields": true, 5 | "module": "esnext", 6 | "moduleResolution": "node", 7 | "strict": true, 8 | "jsx": "preserve", 9 | "sourceMap": true, 10 | "resolveJsonModule": true, 11 | "esModuleInterop": true, 12 | "lib": ["esnext", "dom"] 13 | }, 14 | "include": ["src/**/*.ts", "src/**/*.d.ts", "src/**/*.tsx", "src/**/*.vue"] 15 | } 16 | -------------------------------------------------------------------------------- /web/src/stores/wallet.ts: -------------------------------------------------------------------------------- 1 | import { defineStore } from 'pinia' 2 | 3 | interface WalletData { 4 | address: string 5 | network: string 6 | } 7 | 8 | export const useWalletStore = defineStore('wallet', { 9 | state: () => { 10 | return { 11 | address: '', 12 | provider: null, 13 | acc_short: '', 14 | } 15 | }, 16 | 17 | actions: { 18 | //@ts-ignore 19 | saveWalletData(payload: WalletData) { 20 | this.address = payload.address 21 | this.network = payload.network 22 | this.acc_short = `${payload.address.slice( 23 | 0, 24 | 2 25 | )}...${payload.address.slice(-4)}` 26 | }, 27 | }, 28 | }) 29 | -------------------------------------------------------------------------------- /web/src/stores/global.ts: -------------------------------------------------------------------------------- 1 | import { defineStore } from 'pinia' 2 | 3 | export const useGlobalStore = defineStore('global', { 4 | state: () => { 5 | return { 6 | ethTokenAddress: '', 7 | qTokenAddress: '', 8 | provider: {}, 9 | ethTokenContract: null, 10 | } 11 | }, 12 | 13 | actions: { 14 | //@ts-ignore 15 | // saveWalletData(payload: WalletData) { 16 | // this.address = payload.address 17 | // this.acc_short = `${payload.address.slice( 18 | // 0, 19 | // 2 20 | // )}...${payload.address.slice(-4)}` 21 | // }, 22 | //TODO: save contract provider and contract itself to use it in all views 23 | }, 24 | }) 25 | -------------------------------------------------------------------------------- /web/src/router/index.ts: -------------------------------------------------------------------------------- 1 | import { createRouter, createWebHistory, RouteRecordRaw } from 'vue-router' 2 | import Home from '@/views/Origin.vue' 3 | 4 | const routes: Array = [ 5 | { 6 | path: '/', 7 | name: 'Home', 8 | component: Home, 9 | }, 10 | 11 | { 12 | path: '/bridge-back', 13 | name: 'Destination', 14 | 15 | component: () => import('../views/Destination.vue'), 16 | }, 17 | 18 | // TODO: for 404 errors 19 | // { 20 | // path: '/:catchAll(.*)', 21 | // component: NotFoundComponent, 22 | // name: 'NotFound', 23 | // }, 24 | ] 25 | 26 | const router = createRouter({ 27 | history: createWebHistory(), 28 | 29 | routes, 30 | }) 31 | 32 | export default router 33 | -------------------------------------------------------------------------------- /solidity/test/sample-test.js: -------------------------------------------------------------------------------- 1 | // const { expect } = require("chai"); 2 | // const { ethers } = require("hardhat"); 3 | 4 | // describe("Greeter", function () { 5 | // it("Should return the new greeting once it's changed", async function () { 6 | // const Greeter = await ethers.getContractFactory("Greeter"); 7 | // const greeter = await Greeter.deploy("Hello, world!"); 8 | // await greeter.deployed(); 9 | 10 | // expect(await greeter.greet()).to.equal("Hello, world!"); 11 | 12 | // const setGreetingTx = await greeter.setGreeting("Hola, mundo!"); 13 | 14 | // // wait until the transaction is mined 15 | // await setGreetingTx.wait(); 16 | 17 | // expect(await greeter.greet()).to.equal("Hola, mundo!"); 18 | // }); 19 | // }); 20 | -------------------------------------------------------------------------------- /web/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "blockchain-bridge", 3 | "version": "0.0.0", 4 | "scripts": { 5 | "dev": "vite", 6 | "build": "vite build", 7 | "preview": "vite preview" 8 | }, 9 | "dependencies": { 10 | "@tailwindcss/forms": "^0.4.0", 11 | "ethers": "^5.5.4", 12 | "pinia": "^2.0.6", 13 | "vue": "^3.2.25", 14 | "vue-router": "^4.0.0-0" 15 | }, 16 | "devDependencies": { 17 | "@types/node": "^17.0.1", 18 | "@vitejs/plugin-vue": "^2.0.0", 19 | "autoprefixer": "^10.4.0", 20 | "postcss": "^8.4.5", 21 | "tailwindcss": "^3.0.7", 22 | "typescript": "^4.4.4", 23 | "vite": "^2.7.2", 24 | "vue-tsc": "^0.29.8" 25 | } 26 | } -------------------------------------------------------------------------------- /solidity/contracts/OriginToken.sol: -------------------------------------------------------------------------------- 1 | // SPDX-License-Identifier: MIT 2 | pragma solidity ^0.8.4; 3 | 4 | import "hardhat/console.sol"; 5 | 6 | // Import ERC20 7 | import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; 8 | 9 | contract ChainstackDollars is ERC20 { 10 | // create the token passing the name and symbol 11 | constructor( 12 | string memory _name, 13 | string memory _symbol, 14 | uint256 _initialSupply 15 | ) ERC20(_name, _symbol) { 16 | // mint all tokens and send them to the deployer's wallet 17 | _mint(msg.sender, _initialSupply * (10**uint256(18))); 18 | console.log("Tokens minted %s", _initialSupply); 19 | console.log("Deployed! Tokens sent to %s", msg.sender); 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /solidity/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "hardhat-project", 3 | "devDependencies": { 4 | "@nomiclabs/hardhat-ethers": "^2.0.5", 5 | "@nomiclabs/hardhat-waffle": "^2.0.2", 6 | "chai": "^4.3.6", 7 | "ethereum-waffle": "^3.4.0", 8 | "ethers": "^5.5.4", 9 | "hardhat": "^2.8.4" 10 | }, 11 | "dependencies": { 12 | "@openzeppelin/contracts": "^4.5.0", 13 | "@openzeppelin/test-helpers": "^0.5.15", 14 | "dotenv": "^16.0.0" 15 | }, 16 | "scripts": { 17 | "deploy": "npx hardhat run ./scripts/deploy.js --network localhost", 18 | "deploy:ori": "npx hardhat run ./scripts/deployOrigin.js --network origin", 19 | "deploy:dest": "npx hardhat run ./scripts/deployDestination.js --network destination", 20 | "test": "npx hardhat test", 21 | "dev": "cd web && npm run dev" 22 | } 23 | } 24 | -------------------------------------------------------------------------------- /solidity/scripts/deployOrigin.js: -------------------------------------------------------------------------------- 1 | const main = async () => { 2 | const [deployer] = await hre.ethers.getSigners() 3 | const accountBalance = await deployer.getBalance() 4 | 5 | console.log('Deploying contracts with account: ', deployer.address) 6 | console.log('Account balance: ', accountBalance.toString()) 7 | 8 | let contractFactory = await hre.ethers.getContractFactory('ChainstackDollars') 9 | let contract = await contractFactory.deploy( 10 | 'ChainstackDollars', 11 | 'CHSD', 12 | 1000000 13 | ) 14 | 15 | await contract.deployed() 16 | 17 | console.log( 18 | 'contract ChainstackDollars deployed to address: ', 19 | contract.address 20 | ) 21 | } 22 | 23 | const runMain = async () => { 24 | try { 25 | await main() 26 | process.exit(0) 27 | } catch (error) { 28 | console.error(error) 29 | process.exit(1) 30 | } 31 | } 32 | 33 | runMain() 34 | -------------------------------------------------------------------------------- /solidity/scripts/deployDestination.js: -------------------------------------------------------------------------------- 1 | //load env file 2 | require('dotenv').config() 3 | 4 | const main = async () => { 5 | const [deployer] = await hre.ethers.getSigners() 6 | const accountBalance = await deployer.getBalance() 7 | 8 | console.log('Deploying contracts with account: ', deployer.address) 9 | console.log('Account balance: ', accountBalance.toString()) 10 | 11 | let contractFactory = await hre.ethers.getContractFactory( 12 | 'DChainstackDollars' 13 | ) 14 | let contract = await contractFactory.deploy(process.env.BRIDGE_WALLET) 15 | 16 | await contract.deployed() 17 | 18 | console.log( 19 | 'contract DChainstackDollars deployed to address: ', 20 | contract.address 21 | ) 22 | } 23 | 24 | const runMain = async () => { 25 | try { 26 | await main() 27 | process.exit(0) 28 | } catch (error) { 29 | console.error(error) 30 | process.exit(1) 31 | } 32 | } 33 | 34 | runMain() 35 | -------------------------------------------------------------------------------- /web/src/App.vue: -------------------------------------------------------------------------------- 1 | 17 | 18 | 26 | 27 | 35 | -------------------------------------------------------------------------------- /web/src/components/Nav.vue: -------------------------------------------------------------------------------- 1 | 30 | -------------------------------------------------------------------------------- /solidity/scripts/sample-script.js: -------------------------------------------------------------------------------- 1 | // We require the Hardhat Runtime Environment explicitly here. This is optional 2 | // but useful for running the script in a standalone fashion through `node 157 | -------------------------------------------------------------------------------- /backend/event-watcher.js: -------------------------------------------------------------------------------- 1 | const Web3 = require('web3') 2 | 3 | //load env file 4 | require('dotenv').config() 5 | 6 | const { 7 | mintTokens, 8 | approveForBurn, 9 | burnTokens, 10 | transferToEthWallet, 11 | } = require('./contract-methods.js') 12 | 13 | const ORIGIN_TOKEN_CONTRACT_ADDRESS = process.env.ORIGIN_TOKEN_CONTRACT_ADDRESS 14 | const DESTINATION_TOKEN_CONTRACT_ADDRESS = 15 | process.env.DESTINATION_TOKEN_CONTRACT_ADDRESS 16 | const BRIDGE_WALLET = process.env.BRIDGE_WALLET 17 | 18 | const BRIDGE_WALLET_KEY = process.env.BRIDGE_PRIV_KEY 19 | 20 | const CHSD_ABIJSON = require('./ChainstackDollars.json') 21 | const QCHSD_ABIJSON = require('./DChainstackDollars.json') 22 | 23 | const handleEthEvent = async (event, provider, contract) => { 24 | console.log('handleEthEvent') 25 | const { from, to, value } = event.returnValues 26 | console.log('to :>> ', to) 27 | console.log('from :>> ', from) 28 | console.log('value :>> ', value) 29 | console.log('============================') 30 | 31 | if (from == BRIDGE_WALLET) { 32 | console.log('Transfer is a bridge back') 33 | return 34 | } 35 | if (to == BRIDGE_WALLET && to != from) { 36 | console.log('Tokens received on bridge from ETH chain! Time to bridge!') 37 | 38 | try { 39 | const tokensMinted = await mintTokens(provider, contract, value, from) 40 | if (!tokensMinted) return 41 | console.log('🌈🌈🌈🌈🌈 Bridge to destination completed') 42 | } catch (err) { 43 | console.error('Error processing transaction', err) 44 | // TODO: return funds 45 | } 46 | } else { 47 | console.log('Another transfer') 48 | } 49 | } 50 | 51 | const handleDestinationEvent = async ( 52 | event, 53 | provider, 54 | contract, 55 | providerDest, 56 | contractDest 57 | ) => { 58 | const { from, to, value } = event.returnValues 59 | console.log('handleDestinationEvent') 60 | console.log('to :>> ', to) 61 | console.log('from :>> ', from) 62 | console.log('value :>> ', value) 63 | console.log('============================') 64 | 65 | if (from == process.env.WALLET_ZERO) { 66 | console.log('Tokens minted') 67 | return 68 | } 69 | 70 | if (to == BRIDGE_WALLET && to != from) { 71 | console.log( 72 | 'Tokens received on bridge from destination chain! Time to bridge back!' 73 | ) 74 | 75 | try { 76 | // we need to approve burn, then burn 77 | const tokenBurnApproved = await approveForBurn( 78 | providerDest, 79 | contractDest, 80 | value 81 | ) 82 | if (!tokenBurnApproved) return 83 | console.log('Tokens approved to be burnt') 84 | const tokensBurnt = await burnTokens(providerDest, contractDest, value) 85 | 86 | if (!tokensBurnt) return 87 | console.log( 88 | 'Tokens burnt on destination, time to transfer tokens in ETH side' 89 | ) 90 | const transferBack = await transferToEthWallet( 91 | provider, 92 | contract, 93 | value, 94 | from 95 | ) 96 | if (!transferBack) return 97 | 98 | console.log('Tokens transfered to ETH wallet') 99 | console.log('🌈🌈🌈🌈🌈 Bridge back operation completed') 100 | } catch (err) { 101 | console.error('Error processing transaction', err) 102 | // TODO: return funds 103 | } 104 | } else { 105 | console.log('Something else triggered Transfer event') 106 | } 107 | } 108 | 109 | const main = async () => { 110 | const originWebSockerProvider = new Web3(process.env.ORIGIN_WSS_ENDPOINT) 111 | const destinationWebSockerProvider = new Web3( 112 | process.env.DESTINATION_WSS_ENDPOINT 113 | ) 114 | // adds account to sign transactions 115 | originWebSockerProvider.eth.accounts.wallet.add(BRIDGE_WALLET_KEY) 116 | destinationWebSockerProvider.eth.accounts.wallet.add(BRIDGE_WALLET_KEY) 117 | 118 | const oriNetworkId = await originWebSockerProvider.eth.net.getId() 119 | const destNetworkId = await destinationWebSockerProvider.eth.net.getId() 120 | 121 | console.log('oriNetworkId :>> ', oriNetworkId) 122 | console.log('destNetworkId :>> ', destNetworkId) 123 | 124 | const originTokenContract = new originWebSockerProvider.eth.Contract( 125 | CHSD_ABIJSON.abi, 126 | ORIGIN_TOKEN_CONTRACT_ADDRESS 127 | ) 128 | 129 | const destinationTokenContract = 130 | new destinationWebSockerProvider.eth.Contract( 131 | QCHSD_ABIJSON.abi, 132 | DESTINATION_TOKEN_CONTRACT_ADDRESS 133 | ) 134 | 135 | let options = { 136 | // filter: { 137 | // value: ['1000', '1337'], //Only get events where transfer value was 1000 or 1337 138 | // }, 139 | // fromBlock: 0, //Number || "earliest" || "pending" || "latest" 140 | // toBlock: 'latest', 141 | } 142 | 143 | originTokenContract.events 144 | .Transfer(options) 145 | .on('data', async (event) => { 146 | await handleEthEvent( 147 | event, 148 | destinationWebSockerProvider, 149 | destinationTokenContract 150 | ) 151 | }) 152 | .on('error', (err) => { 153 | console.error('Error: ', err) 154 | }) 155 | console.log(`Waiting for Transfer events on ${ORIGIN_TOKEN_CONTRACT_ADDRESS}`) 156 | 157 | destinationTokenContract.events 158 | .Transfer(options) 159 | .on('data', async (event) => { 160 | await handleDestinationEvent( 161 | event, 162 | originWebSockerProvider, 163 | originTokenContract, 164 | destinationWebSockerProvider, 165 | destinationTokenContract 166 | ) 167 | }) 168 | .on('error', (err) => { 169 | console.error('Error: ', err) 170 | }) 171 | 172 | console.log( 173 | `Waiting for Transfer events on ${DESTINATION_TOKEN_CONTRACT_ADDRESS}` 174 | ) 175 | } 176 | 177 | main() 178 | -------------------------------------------------------------------------------- /web/src/views/Origin.vue: -------------------------------------------------------------------------------- 1 | 80 | 81 | 182 | -------------------------------------------------------------------------------- /backend/contract-methods.js: -------------------------------------------------------------------------------- 1 | const BRIDGE_WALLET = process.env.BRIDGE_WALLET 2 | const ORIGIN_TOKEN_CONTRACT_ADDRESS = process.env.ORIGIN_TOKEN_CONTRACT_ADDRESS 3 | const DESTINATION_TOKEN_CONTRACT_ADDRESS = 4 | process.env.DESTINATION_TOKEN_CONTRACT_ADDRESS 5 | 6 | const mintTokens = async (provider, contract, amount, address) => { 7 | try { 8 | const trx = contract.methods.mint(address, amount) 9 | 10 | const gas = await trx.estimateGas({ from: BRIDGE_WALLET }) 11 | console.log('gas :>> ', gas) 12 | const gasPrice = await provider.eth.getGasPrice() 13 | console.log('gasPrice :>> ', gasPrice) 14 | const data = trx.encodeABI() 15 | console.log('data :>> ', data) 16 | const nonce = await provider.eth.getTransactionCount(BRIDGE_WALLET) 17 | 18 | console.log('nonce :>> ', nonce) 19 | 20 | const trxData = { 21 | // trx is sent from the bridge wallet 22 | from: BRIDGE_WALLET, 23 | // destination of the transaction is the ERC20 token address 24 | to: DESTINATION_TOKEN_CONTRACT_ADDRESS, 25 | 26 | data, 27 | gas, 28 | gasPrice, 29 | nonce, 30 | } 31 | 32 | console.log('Transaction ready to be sent') 33 | 34 | const receipt = await provider.eth.sendTransaction(trxData) 35 | console.log(`Transaction sent, hash is ${receipt.transactionHash}`) 36 | console.log( 37 | `mintTokens > You can see this transaction in ${process.env.DESTINATION_EXPLORER}${receipt.transactionHash}` 38 | ) 39 | } catch (error) { 40 | console.error('Error in mintTokens >', error) 41 | return false 42 | } 43 | } 44 | 45 | const transferToEthWallet = async (provider, contract, amount, address) => { 46 | try { 47 | console.log('Transfering tokens to ETH wallet 💸💸💸💸💸') 48 | console.log('address :>> ', address) 49 | console.log('amount :>> ', amount) 50 | const trx = contract.methods.transfer(address, amount) 51 | 52 | const gas = await trx.estimateGas({ from: BRIDGE_WALLET }) 53 | console.log('gas :>> ', gas) 54 | const gasPrice = await provider.eth.getGasPrice() 55 | console.log('gasPrice :>> ', gasPrice) 56 | const data = trx.encodeABI() 57 | console.log('data :>> ', data) 58 | const nonce = await provider.eth.getTransactionCount(BRIDGE_WALLET) 59 | 60 | console.log('nonce :>> ', nonce) 61 | 62 | const trxData = { 63 | // trx is sent from the bridge wallet 64 | from: BRIDGE_WALLET, 65 | // destination of the transaction is the ERC20 token address 66 | to: ORIGIN_TOKEN_CONTRACT_ADDRESS, 67 | // data contains the amount an receiver params for transfer 68 | data, 69 | // TO TEST!!! 70 | gas: gas * 1.2, 71 | gasPrice, 72 | nonce, 73 | } 74 | 75 | // console.log('signedTrx :>> ', signedTrx.rawTransaction) 76 | 77 | console.log('Transaction ready to be sent') 78 | 79 | const receipt = await provider.eth.sendTransaction(trxData) 80 | console.log(`Transaction sent, hash is ${receipt.transactionHash}`) 81 | console.log( 82 | `transferToEthWallet > You can see this transaction in ${process.env.ORIGIN_EXPLORER}${receipt.transactionHash}` 83 | ) 84 | return true 85 | } catch (error) { 86 | console.error('Error in transferToEthWallet >', error) 87 | return false 88 | } 89 | } 90 | const approveForBurn = async (provider, contract, amount) => { 91 | try { 92 | console.log('Approving token burn 🔥🔥🔥🔥🔥') 93 | console.log('amount :>> ', amount) 94 | console.log('contract.options.address :>> ', contract.options.address) 95 | const trx = contract.methods.approve(BRIDGE_WALLET, amount) 96 | 97 | const gas = await trx.estimateGas({ from: BRIDGE_WALLET }) 98 | console.log('gas :>> ', gas) 99 | const gasPrice = await provider.eth.getGasPrice() 100 | console.log('gasPrice :>> ', gasPrice) 101 | const data = trx.encodeABI() 102 | console.log('data :>> ', data) 103 | const nonce = await provider.eth.getTransactionCount(BRIDGE_WALLET) 104 | 105 | console.log('nonce :>> ', nonce) 106 | 107 | const trxData = { 108 | // trx is sent from the bridge wallet 109 | from: BRIDGE_WALLET, 110 | // destination of the transaction is the ERC20 token address 111 | to: contract.options.address, 112 | data, 113 | // hardcoded gasPrice as estimation is not correct 114 | gas: 60000, 115 | gasPrice, 116 | nonce, 117 | } 118 | 119 | console.log('Transaction ready to be sent') 120 | 121 | const receipt = await provider.eth.sendTransaction(trxData) 122 | console.log(`Transaction sent, hash is ${receipt.transactionHash}`) 123 | console.log( 124 | `approveForBurn > You can see this transaction in ${process.env.DESTINATION_EXPLORER}${receipt.transactionHash}` 125 | ) 126 | return true 127 | } catch (err) { 128 | console.error('Error in approveForBurn > ', err) 129 | return false 130 | } 131 | } 132 | 133 | const burnTokens = async (provider, contract, amount) => { 134 | try { 135 | console.log('Burning tokens from wallet 🔥🔥🔥🔥🔥') 136 | console.log('amount :>> ', amount) 137 | console.log('contract.options.address :>> ', contract.options.address) 138 | const trx = contract.methods.burnFrom(BRIDGE_WALLET, amount) 139 | 140 | const gas = await trx.estimateGas({ from: BRIDGE_WALLET }) 141 | console.log('gas :>> ', gas) 142 | const gasPrice = await provider.eth.getGasPrice() 143 | console.log('gasPrice :>> ', gasPrice) 144 | const data = trx.encodeABI() 145 | console.log('data :>> ', data) 146 | const nonce = await provider.eth.getTransactionCount(BRIDGE_WALLET) 147 | 148 | console.log('nonce :>> ', nonce) 149 | 150 | const trxData = { 151 | // trx is sent from the bridge wallet 152 | from: BRIDGE_WALLET, 153 | // destination of the transaction is the ERC20 token address 154 | to: contract.options.address, 155 | data, 156 | // hardcoded gasPrice as estimation is not correct 157 | gas, 158 | gasPrice, 159 | nonce, 160 | } 161 | 162 | console.log('Transaction ready to be sent') 163 | 164 | const receipt = await provider.eth.sendTransaction(trxData) 165 | console.log(`Transaction sent, hash is ${receipt.transactionHash}`) 166 | console.log( 167 | `burnTokens > You can see this transaction in ${process.env.DESTINATION_EXPLORER}${receipt.transactionHash}` 168 | ) 169 | return true 170 | } catch (err) { 171 | console.error('Error in burnTokens > ', err) 172 | return false 173 | } 174 | } 175 | 176 | module.exports = { 177 | mintTokens, 178 | approveForBurn, 179 | burnTokens, 180 | transferToEthWallet, 181 | } 182 | -------------------------------------------------------------------------------- /web/src/views/Destination.vue: -------------------------------------------------------------------------------- 1 | 73 | 74 | 200 | -------------------------------------------------------------------------------- /web/src/components/Navbar.vue: -------------------------------------------------------------------------------- 1 | 75 | 76 | 110 | -------------------------------------------------------------------------------- /backend/ChainstackDollars.json: -------------------------------------------------------------------------------- 1 | { 2 | "_format": "hh-sol-artifact-1", 3 | "contractName": "ChainstackDollars", 4 | "sourceName": "contracts/OriginToken.sol", 5 | "abi": [ 6 | { 7 | "inputs": [ 8 | { 9 | "internalType": "string", 10 | "name": "_name", 11 | "type": "string" 12 | }, 13 | { 14 | "internalType": "string", 15 | "name": "_symbol", 16 | "type": "string" 17 | }, 18 | { 19 | "internalType": "uint256", 20 | "name": "_initialSupply", 21 | "type": "uint256" 22 | } 23 | ], 24 | "stateMutability": "nonpayable", 25 | "type": "constructor" 26 | }, 27 | { 28 | "anonymous": false, 29 | "inputs": [ 30 | { 31 | "indexed": true, 32 | "internalType": "address", 33 | "name": "owner", 34 | "type": "address" 35 | }, 36 | { 37 | "indexed": true, 38 | "internalType": "address", 39 | "name": "spender", 40 | "type": "address" 41 | }, 42 | { 43 | "indexed": false, 44 | "internalType": "uint256", 45 | "name": "value", 46 | "type": "uint256" 47 | } 48 | ], 49 | "name": "Approval", 50 | "type": "event" 51 | }, 52 | { 53 | "anonymous": false, 54 | "inputs": [ 55 | { 56 | "indexed": true, 57 | "internalType": "address", 58 | "name": "from", 59 | "type": "address" 60 | }, 61 | { 62 | "indexed": true, 63 | "internalType": "address", 64 | "name": "to", 65 | "type": "address" 66 | }, 67 | { 68 | "indexed": false, 69 | "internalType": "uint256", 70 | "name": "value", 71 | "type": "uint256" 72 | } 73 | ], 74 | "name": "Transfer", 75 | "type": "event" 76 | }, 77 | { 78 | "inputs": [ 79 | { 80 | "internalType": "address", 81 | "name": "owner", 82 | "type": "address" 83 | }, 84 | { 85 | "internalType": "address", 86 | "name": "spender", 87 | "type": "address" 88 | } 89 | ], 90 | "name": "allowance", 91 | "outputs": [ 92 | { 93 | "internalType": "uint256", 94 | "name": "", 95 | "type": "uint256" 96 | } 97 | ], 98 | "stateMutability": "view", 99 | "type": "function" 100 | }, 101 | { 102 | "inputs": [ 103 | { 104 | "internalType": "address", 105 | "name": "spender", 106 | "type": "address" 107 | }, 108 | { 109 | "internalType": "uint256", 110 | "name": "amount", 111 | "type": "uint256" 112 | } 113 | ], 114 | "name": "approve", 115 | "outputs": [ 116 | { 117 | "internalType": "bool", 118 | "name": "", 119 | "type": "bool" 120 | } 121 | ], 122 | "stateMutability": "nonpayable", 123 | "type": "function" 124 | }, 125 | { 126 | "inputs": [ 127 | { 128 | "internalType": "address", 129 | "name": "account", 130 | "type": "address" 131 | } 132 | ], 133 | "name": "balanceOf", 134 | "outputs": [ 135 | { 136 | "internalType": "uint256", 137 | "name": "", 138 | "type": "uint256" 139 | } 140 | ], 141 | "stateMutability": "view", 142 | "type": "function" 143 | }, 144 | { 145 | "inputs": [], 146 | "name": "decimals", 147 | "outputs": [ 148 | { 149 | "internalType": "uint8", 150 | "name": "", 151 | "type": "uint8" 152 | } 153 | ], 154 | "stateMutability": "view", 155 | "type": "function" 156 | }, 157 | { 158 | "inputs": [ 159 | { 160 | "internalType": "address", 161 | "name": "spender", 162 | "type": "address" 163 | }, 164 | { 165 | "internalType": "uint256", 166 | "name": "subtractedValue", 167 | "type": "uint256" 168 | } 169 | ], 170 | "name": "decreaseAllowance", 171 | "outputs": [ 172 | { 173 | "internalType": "bool", 174 | "name": "", 175 | "type": "bool" 176 | } 177 | ], 178 | "stateMutability": "nonpayable", 179 | "type": "function" 180 | }, 181 | { 182 | "inputs": [ 183 | { 184 | "internalType": "address", 185 | "name": "spender", 186 | "type": "address" 187 | }, 188 | { 189 | "internalType": "uint256", 190 | "name": "addedValue", 191 | "type": "uint256" 192 | } 193 | ], 194 | "name": "increaseAllowance", 195 | "outputs": [ 196 | { 197 | "internalType": "bool", 198 | "name": "", 199 | "type": "bool" 200 | } 201 | ], 202 | "stateMutability": "nonpayable", 203 | "type": "function" 204 | }, 205 | { 206 | "inputs": [], 207 | "name": "name", 208 | "outputs": [ 209 | { 210 | "internalType": "string", 211 | "name": "", 212 | "type": "string" 213 | } 214 | ], 215 | "stateMutability": "view", 216 | "type": "function" 217 | }, 218 | { 219 | "inputs": [], 220 | "name": "symbol", 221 | "outputs": [ 222 | { 223 | "internalType": "string", 224 | "name": "", 225 | "type": "string" 226 | } 227 | ], 228 | "stateMutability": "view", 229 | "type": "function" 230 | }, 231 | { 232 | "inputs": [], 233 | "name": "totalSupply", 234 | "outputs": [ 235 | { 236 | "internalType": "uint256", 237 | "name": "", 238 | "type": "uint256" 239 | } 240 | ], 241 | "stateMutability": "view", 242 | "type": "function" 243 | }, 244 | { 245 | "inputs": [ 246 | { 247 | "internalType": "address", 248 | "name": "to", 249 | "type": "address" 250 | }, 251 | { 252 | "internalType": "uint256", 253 | "name": "amount", 254 | "type": "uint256" 255 | } 256 | ], 257 | "name": "transfer", 258 | "outputs": [ 259 | { 260 | "internalType": "bool", 261 | "name": "", 262 | "type": "bool" 263 | } 264 | ], 265 | "stateMutability": "nonpayable", 266 | "type": "function" 267 | }, 268 | { 269 | "inputs": [ 270 | { 271 | "internalType": "address", 272 | "name": "from", 273 | "type": "address" 274 | }, 275 | { 276 | "internalType": "address", 277 | "name": "to", 278 | "type": "address" 279 | }, 280 | { 281 | "internalType": "uint256", 282 | "name": "amount", 283 | "type": "uint256" 284 | } 285 | ], 286 | "name": "transferFrom", 287 | "outputs": [ 288 | { 289 | "internalType": "bool", 290 | "name": "", 291 | "type": "bool" 292 | } 293 | ], 294 | "stateMutability": "nonpayable", 295 | "type": "function" 296 | } 297 | ], 298 | "bytecode": 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300 | "linkReferences": {}, 301 | "deployedLinkReferences": {} 302 | } 303 | -------------------------------------------------------------------------------- /backend/DChainstackDollars.json: -------------------------------------------------------------------------------- 1 | { 2 | "_format": "hh-sol-artifact-1", 3 | "contractName": "DChainstackDollars", 4 | "sourceName": "contracts/DestinationToken.sol", 5 | "abi": [ 6 | { 7 | "inputs": [ 8 | { 9 | "internalType": "address", 10 | "name": "_bridge", 11 | "type": "address" 12 | } 13 | ], 14 | "stateMutability": "nonpayable", 15 | "type": "constructor" 16 | }, 17 | { 18 | "anonymous": false, 19 | "inputs": [ 20 | { 21 | "indexed": true, 22 | "internalType": "address", 23 | "name": "owner", 24 | "type": "address" 25 | }, 26 | { 27 | "indexed": true, 28 | "internalType": "address", 29 | "name": "spender", 30 | "type": "address" 31 | }, 32 | { 33 | "indexed": false, 34 | "internalType": "uint256", 35 | "name": "value", 36 | "type": "uint256" 37 | } 38 | ], 39 | "name": "Approval", 40 | "type": "event" 41 | }, 42 | { 43 | "anonymous": false, 44 | "inputs": [ 45 | { 46 | "indexed": false, 47 | "internalType": "address", 48 | "name": "from", 49 | "type": "address" 50 | }, 51 | { 52 | "indexed": false, 53 | "internalType": "uint256", 54 | "name": "amount", 55 | "type": "uint256" 56 | } 57 | ], 58 | "name": "TokensMinted", 59 | "type": "event" 60 | }, 61 | { 62 | "anonymous": false, 63 | "inputs": [ 64 | { 65 | "indexed": true, 66 | "internalType": "address", 67 | "name": "from", 68 | "type": "address" 69 | }, 70 | { 71 | "indexed": true, 72 | "internalType": "address", 73 | "name": "to", 74 | "type": "address" 75 | }, 76 | { 77 | "indexed": false, 78 | "internalType": "uint256", 79 | "name": "value", 80 | "type": "uint256" 81 | } 82 | ], 83 | "name": "Transfer", 84 | "type": "event" 85 | }, 86 | { 87 | "inputs": [ 88 | { 89 | "internalType": "address", 90 | "name": "owner", 91 | "type": "address" 92 | }, 93 | { 94 | "internalType": "address", 95 | "name": "spender", 96 | "type": "address" 97 | } 98 | ], 99 | "name": "allowance", 100 | "outputs": [ 101 | { 102 | "internalType": "uint256", 103 | "name": "", 104 | "type": "uint256" 105 | } 106 | ], 107 | "stateMutability": "view", 108 | "type": "function" 109 | }, 110 | { 111 | "inputs": [ 112 | { 113 | "internalType": "address", 114 | "name": "spender", 115 | "type": "address" 116 | }, 117 | { 118 | "internalType": "uint256", 119 | "name": "amount", 120 | "type": "uint256" 121 | } 122 | ], 123 | "name": "approve", 124 | "outputs": [ 125 | { 126 | "internalType": "bool", 127 | "name": "", 128 | "type": "bool" 129 | } 130 | ], 131 | "stateMutability": "nonpayable", 132 | "type": "function" 133 | }, 134 | { 135 | "inputs": [ 136 | { 137 | "internalType": "address", 138 | "name": "account", 139 | "type": "address" 140 | } 141 | ], 142 | "name": "balanceOf", 143 | "outputs": [ 144 | { 145 | "internalType": "uint256", 146 | "name": "", 147 | "type": "uint256" 148 | } 149 | ], 150 | "stateMutability": "view", 151 | "type": "function" 152 | }, 153 | { 154 | "inputs": [ 155 | { 156 | "internalType": "uint256", 157 | "name": "amount", 158 | "type": "uint256" 159 | } 160 | ], 161 | "name": "burn", 162 | "outputs": [], 163 | "stateMutability": "nonpayable", 164 | "type": "function" 165 | }, 166 | { 167 | "inputs": [ 168 | { 169 | "internalType": "address", 170 | "name": "_account", 171 | "type": "address" 172 | }, 173 | { 174 | "internalType": "uint256", 175 | "name": "_amount", 176 | "type": "uint256" 177 | } 178 | ], 179 | "name": "burnFrom", 180 | "outputs": [], 181 | "stateMutability": "nonpayable", 182 | "type": "function" 183 | }, 184 | { 185 | "inputs": [], 186 | "name": "decimals", 187 | "outputs": [ 188 | { 189 | "internalType": "uint8", 190 | "name": "", 191 | "type": "uint8" 192 | } 193 | ], 194 | "stateMutability": "view", 195 | "type": "function" 196 | }, 197 | { 198 | "inputs": [ 199 | { 200 | "internalType": "address", 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"internalType": "uint256", 254 | "name": "_amount", 255 | "type": "uint256" 256 | } 257 | ], 258 | "name": "mint", 259 | "outputs": [], 260 | "stateMutability": "nonpayable", 261 | "type": "function" 262 | }, 263 | { 264 | "inputs": [], 265 | "name": "name", 266 | "outputs": [ 267 | { 268 | "internalType": "string", 269 | "name": "", 270 | "type": "string" 271 | } 272 | ], 273 | "stateMutability": "view", 274 | "type": "function" 275 | }, 276 | { 277 | "inputs": [], 278 | "name": "symbol", 279 | "outputs": [ 280 | { 281 | "internalType": "string", 282 | "name": "", 283 | "type": "string" 284 | } 285 | ], 286 | "stateMutability": "view", 287 | "type": "function" 288 | }, 289 | { 290 | "inputs": [], 291 | "name": "totalSupply", 292 | "outputs": [ 293 | { 294 | "internalType": "uint256", 295 | "name": "", 296 | "type": "uint256" 297 | } 298 | ], 299 | "stateMutability": "view", 300 | "type": "function" 301 | }, 302 | { 303 | "inputs": [ 304 | { 305 | "internalType": "address", 306 | "name": "to", 307 | "type": "address" 308 | }, 309 | { 310 | "internalType": "uint256", 311 | "name": "amount", 312 | "type": "uint256" 313 | } 314 | ], 315 | "name": "transfer", 316 | "outputs": [ 317 | { 318 | "internalType": "bool", 319 | "name": "", 320 | "type": "bool" 321 | } 322 | ], 323 | "stateMutability": "nonpayable", 324 | "type": "function" 325 | }, 326 | { 327 | "inputs": [ 328 | { 329 | "internalType": "address", 330 | "name": "from", 331 | "type": "address" 332 | }, 333 | { 334 | "internalType": "address", 335 | "name": "to", 336 | "type": "address" 337 | }, 338 | { 339 | "internalType": "uint256", 340 | "name": "amount", 341 | "type": "uint256" 342 | } 343 | ], 344 | "name": "transferFrom", 345 | "outputs": [ 346 | { 347 | "internalType": "bool", 348 | "name": "", 349 | "type": "bool" 350 | } 351 | ], 352 | "stateMutability": "nonpayable", 353 | "type": "function" 354 | } 355 | ], 356 | "bytecode": 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