DEVELOPER DOCUMENTATION

Build with the BitPayPal API

Create invoices, capture immutable payment state, use fiat quote snapshots and receive signed webhooks without relying on browser redirects.

Create merchant invoices with idempotency keys and asset-aware smallest-unit amounts.

Read confirmations, transaction identifiers, reorg state and provider conflicts.

Verify HMAC signatures, timestamps and event IDs before fulfilling orders.

Connect public receiving material and keep private keys outside BitPayPal.

Integration rule

Your server should treat the verified invoice state and webhook event as authoritative. A customer returning from checkout is not proof of payment.