What is Proof Of Payment?
Proof Of Payment explained for crypto payment merchants using Zateway.
Proof Of Payment is an important payments concept. Zateway helps merchants apply it with non-custodial USDT/USDC checkout on Polygon, Solana, Base, BSC, Arbitrum, Optimism, 1% flat fees, and direct-to-wallet settlement.
Why Proof Of Payment matters
Teams evaluating Proof Of Payment usually care about fee drag, settlement speed, and custody risk. Zateway removes intermediary holds so proof of payment workflows settle on-chain.
Using Proof Of Payment with Zateway
Create a payment session or payment link, let customers pay in USDT/USDC, verify HMAC webhooks, then fulfill. This operationalizes Proof Of Payment without taking custody of merchant funds.
Implementation checklist
Use sandbox keys first, pick low-fee chains (Polygon/Solana/Base), store tx hashes for audit, and monitor confirmed vs settled states for Proof Of Payment-related flows.