payinOPERATIONS MANUAL

THE WORKING LIBRARY / 01—06

Beyond checkout. Into operations.

Six questions, six complete guides. Start with the job you need to do today.

  1. 01

    Hosted or self-hosted: decide who owns the midnight incident

    A responsibility-first checklist for choosing stablecoin payment infrastructure without confusing custody, hosting and settlement.

    Design the collection flow
  2. 02

    Order payments or deposit addresses? Model the business event first

    Choose between paying an invoice and funding an account, then define late payments, reuse and ledger ownership.

    Design the collection flow
  3. 03

    Visible onchain is not the same as ready to fulfill

    A merchant checklist for network selection, token identity and the gap between detection and confirmation.

    Operate reliably
  4. 04

    Two webhook deliveries must not become two fulfillments

    A practical design review for verified events, durable intake, deduplication and recovery after a missed notification.

    Operate reliably
  5. 05

    Write the stablecoin refund policy before the first sale

    Separate commercial approval from payment execution, and record the asset, destination, amount and completion evidence.

    Close the loop
  6. 06

    Reconcile the order, the transfer and the business result

    A practical exception-led workflow for matching stablecoin payment evidence to fulfillment and the merchant ledger.

    Close the loop

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Based on public documentation, not claims of vendor testing, legal review or measured search demand. Read our method →