Accept USDC (ERC-20)
on Base with an API.

Take USDC payments from customers and pay out in USDC on Base: a deposit address for every customer, deposits credited once they're final, and payouts your own team approves. The keys stay in hardware enclaves you can verify.

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USDC on Base

The details.

NetworkBase · ERC-20 token
Contract0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 View on explorer
Only this contract is accepted as USDC on Base: look-alike tokens sent to your customers' addresses are ignored.
Decimals6 (amounts in the API are whole numbers of the smallest unit)
DepositsA deposit counts once it is 30 blocks deep and its block is still part of the chain. If a reorganization removes it, it's never credited.
Minimum withdrawal10 USDC
Network feesNetwork fees are paid in ETH. Your gas wallet can top up the ETH that token payouts and sweeps need, within a daily cap you set.
AddressesEvery wallet has one EVM address (0x…), the same on Ethereum, BNB Chain, Base, Polygon and Lisk. A customer can send any supported coin on any of those networks to it.
Asset id in the APIUSDC-BASE

For developers

Deposit addresses and payouts in a few lines.

import { Valtu, depositAddress } from "@valtu/wallet-kit";
const valtu = Valtu.fromEnv();

// A deposit address for one of your customers (idempotent).
const wallet = await valtu.wallets.forCustomer("cus_42");
const address = depositAddress(wallet, "base");

// A payout of 25.50 USDC: retries never send twice.
const amount = await valtu.assets.toBaseUnits("USDC-BASE", "25.50");
await valtu.transfers.create({ walletId: payoutWalletId, asset: "USDC-BASE", amount, to, externalId: "payout_981" });

Python: pip install valtu, same calls (valtu.wallets.for_customer, valtu.transfers.create). Full guide: integration.

Related

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