Code Examples

Install viem

npm install viem

Read $USC Balance

import { createPublicClient, http, parseAbi } from 'viem'
import { etc } from 'viem/chains'

const USC_ADDRESS = '0xDE093684c796204224BC081f937aa059D903c52a' // Replace with actual address

const client = createPublicClient({
  chain: etc,
  transport: http('https://etc.rivet.link'),
})

const erc20Abi = parseAbi([
  'function balanceOf(address owner) view returns (uint256)',
  'function decimals() view returns (uint8)',
  'function symbol() view returns (string)',
])

async function getUSCBalance(address: string) {
  const balance = await client.readContract({
    address: USC_ADDRESS,
    abi: erc20Abi,
    functionName: 'balanceOf',
    args: [address],
  })

  // USC has 6 decimals
  return Number(balance) / 1e6
}

// Usage
const balance = await getUSCBalance('0xYourAddress')
console.log(`Balance: ${balance} USC`)

Transfer $USC

import { createWalletClient, http, parseAbi, parseUnits } from 'viem'
import { privateKeyToAccount } from 'viem/accounts'
import { etc } from 'viem/chains'

const USC_ADDRESS = '0xDE093684c796204224BC081f937aa059D903c52a' // Replace with actual address

const account = privateKeyToAccount('0xYourPrivateKey')

const walletClient = createWalletClient({
  account,
  chain: etc,
  transport: http('https://etc.rivet.link'),
})

const erc20Abi = parseAbi([
  'function transfer(address to, uint256 amount) returns (bool)',
])

async function transferUSC(to: string, amount: number) {
  // Convert to 6 decimals
  const value = parseUnits(amount.toString(), 6)

  const hash = await walletClient.writeContract({
    address: USC_ADDRESS,
    abi: erc20Abi,
    functionName: 'transfer',
    args: [to, value],
  })

  return hash
}

// Usage: Transfer 100 USC
const txHash = await transferUSC('0xRecipient', 100)
console.log(`Transaction: ${txHash}`)

Read $USC Balance with ethers

import { ethers } from 'ethers'

const USC_ADDRESS = '0xDE093684c796204224BC081f937aa059D903c52a' // Replace with actual address
const RPC_URL = 'https://etc.rivet.link'

const provider = new ethers.JsonRpcProvider(RPC_URL)

const erc20Abi = [
  'function balanceOf(address owner) view returns (uint256)',
  'function decimals() view returns (uint8)',
]

const contract = new ethers.Contract(USC_ADDRESS, erc20Abi, provider)

async function getUSCBalance(address: string) {
  const balance = await contract.balanceOf(address)
  const decimals = await contract.decimals()
  return ethers.formatUnits(balance, decimals)
}

// Usage
const balance = await getUSCBalance('0xYourAddress')
console.log(`Balance: ${balance} USC`)