StableBonds Documentation

// StableBonds uses viem + wagmi — no custom SDK required
// Install dependencies
npm install viem wagmi @circle-fin/web3-services-sdk

// Configure a public client on Arc Testnet
import { createPublicClient, http } from 'viem';
import { arcTestnet } from 'viem/chains';

const client = createPublicClient({
  chain: arcTestnet,               // Chain ID: 5042002
  transport: http('https://rpc.testnet.arc.network')
});

// Verify connection
const block = await client.getBlockNumber();
console.log('Connected to Arc. Block:', block);

// Read your USDC balance on Arc Testnet
import { createPublicClient, http, formatUnits, parseAbi } from 'viem';
import { arcTestnet } from 'viem/chains';

const USDC_ADDRESS = '0x3600000000000000000000000000000000000000';

const client = createPublicClient({
  chain: arcTestnet,
  transport: http('https://rpc.testnet.arc.network')
});

const USDC_ABI = parseAbi([
  'function balanceOf(address account) view returns (uint256)'
]);

const rawBalance = await client.readContract({
  address: USDC_ADDRESS,
  abi: USDC_ABI,
  functionName: 'balanceOf',
  args: ['0xYourWalletAddress']
});

// USDC uses 6 decimals
const balance = formatUnits(rawBalance, 6);
console.log('USDC Balance:', balance);

// Schedule a payment bond via the StableBonds vault contract
// The vault is deployed at: 0x3522E90D3496D530F7bd2767bE818Cd2F6846b0A
import { createWalletClient, http, parseUnits } from 'viem';
import { arcTestnet } from 'viem/chains';
import { privateKeyToAccount } from 'viem/accounts';

const VAULT_ADDRESS = '0x3522E90D3496D530F7bd2767bE818Cd2F6846b0A';
const USDC_ADDRESS  = '0x3600000000000000000000000000000000000000';

const account = privateKeyToAccount('0xYourPrivateKey');
const walletClient = createWalletClient({
  account,
  chain: arcTestnet,
  transport: http('https://rpc.testnet.arc.network')
});

// Step 1 — Approve vault to spend USDC
const approveHash = await walletClient.writeContract({
  address: USDC_ADDRESS,
  abi: parseAbi(['function approve(address spender, uint256 amount) returns (bool)']),
  functionName: 'approve',
  args: [VAULT_ADDRESS, parseUnits('1000', 6)]   // 1,000 USDC
});

// Step 2 — Deposit into vault to start earning yield
const depositHash = await walletClient.writeContract({
  address: VAULT_ADDRESS,
  abi: parseAbi(['function deposit(uint256 amount, address recipient, uint256 maturityDays)']),
  functionName: 'deposit',
  args: [parseUnits('1000', 6), '0xVendorAddress', 90n]  // 90-day bond
});

console.log('Bond created. Tx:', depositHash);

// Sign in with Circle Smart Account (Passkey / WebAuthn)
// StableBonds uses Circle WaaS — no seed phrase required

import { W3SSdk } from '@circle-fin/web3-services-sdk';

const sdk = new W3SSdk({
  appId: process.env.NEXT_PUBLIC_CIRCLE_APP_ID
});

// Trigger passkey login (Touch ID / Face ID / Windows Hello)
await sdk.execute(userToken, encryptionKey, [
  { type: 'createWallet' }   // creates Circle Smart Account
]);

// Once logged in, the Smart Account address is available
// and all transactions are gasless on Arc (fees sponsored by Circle)