Is a Valid Payment Webhook Signature Enough to Fulfill an Order?
Check payment webhook signatures, order binding and current refund state before fulfillment, with a small exercise and a merchant acceptance worksheet.
Web3
Wallets, application integration and clear user journeys.
Wallet Login Nonces and Account Switching
A wallet can change while the application session still refers to the old address. Follow nonce consumption, server verification and account-switch handling.
Linking Wallets to Existing User Accounts
Plan wallet linking with fresh account proof, verified wallet control, conflict handling and recovery rules. Includes an editable relationship review worksheet.
Hosted vs Custom Stablecoin Checkout
Compare hosted and custom checkout by order references, confirmation, refund flow and data ownership. A responsibility worksheet without availability promises.
Mapping Payment Provider Events to Order States
Preserve raw provider events and map them to explicit order decisions. Includes a worksheet for duplicates, unknown statuses, refunds and reconciliation.
Validate Stablecoin Checkout Amounts on the Server
Review server-owned stablecoin prices, raw integer amounts, asset identity and order expiry using the current StableIn local merchant example.