Accept crypto payments on Optimism

Accept USDC and USDT on Optimism with hosted checkout and signed webhooks, settling directly to your own wallet.

Create an invoice, set Optimism as your settlement chain, and send the buyer to a hosted checkout. The moment USDC and USDT lands you get a signed webhook. Funds settle straight to your own wallet; Shieldz is non-custodial and only watches the chain.

curl https://shieldz.cash/api/v1/invoices \
  -H "Authorization: Bearer sk_live_…" \
  -d '{ "amount_usd_cents": 5000, "settlement": { "chain": "OPTIMISM", "asset": "USDC" } }'

See all supported coins and chains, the API docs, and the SDKs.

Explore Shieldz

Accept a coin: Bitcoin, USDC, USDT, Zcash.

Compare: vs Coinbase Commerce, vs BTCPay Server, vs CryptAPI, vs NOWPayments.

Use cases: For freelancers, For creators, For open-source projects, For online stores.

Build: SDKs, API reference, quickstart. Learn: overview, blog, how it works, supported coins, pricing, is it safe, verify it yourself.