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What is Double Spend Protection?

Double Spend Protection explained for crypto payment merchants using Zateway.

Double Spend Protection 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 Double Spend Protection matters

Teams evaluating Double Spend Protection usually care about fee drag, settlement speed, and custody risk. Zateway removes intermediary holds so double spend protection workflows settle on-chain.

Using Double Spend Protection with Zateway

Create a payment session or payment link, let customers pay in USDT/USDC, verify HMAC webhooks, then fulfill. This operationalizes Double Spend Protection 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 Double Spend Protection-related flows.

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