This field guide is being reviewed and revised for accuracy. Some content may change before the target freeze on 30 July 2026.
Achala Arunalu Achala Arunalu Fintech Stablecoin IC Stablecoin banking | Cards | Crypto payments | Fraud/AML | Treasury ops LinkedIn

Fiat rails section

Fiat & Local Rails

Separate fiat and local payment rails from crypto custody: route local collections and payouts through local rail providers, partner banks, and country rails such as PIX, SPEI, ACH, SEPA, and Faster Payments.

4 rail flows Rail is not currency Recon proves local settlement

Interactive flow lab

Route local money without muddying the ledger

Switch between rail selection, local collection, fiat payout, and reconciliation.

High-level sequence

Fiat deposit and payout through a bank partner

Screened, ledgered, and reconciled — with returns handled safely.

Customer Fiat rails service Risk · AML Bank partner Ledger · Treasury
  1. 1
    CustomerFiat rails servicerequest

    Request a payout to a local bank account.

  2. 2
    Fiat rails serviceRisk · AMLrequest

    Screen the beneficiary and amount.

  3. 3
    Risk · AMLFiat rails serviceresponse

    Clear — or hold for review.

  4. 4
    Fiat rails serviceLedger · Treasuryrequest

    Debit the balance and reserve the payout.

  5. 5
    Fiat rails serviceBank partneroff-platform

    Submit the payout instruction (ACH / SEPA / local).

  6. 6
    Bank partnerFiat rails serviceevent

    Accepted — later settled or returned.

  7. 7
    Fiat rails serviceLedger · Treasuryrequest

    Post settlement — or reverse on a return.

  8. 8
    Fiat rails serviceCustomerevent

    Payout status updates.

Endpoint map

Find the fiat rail boundary

Filter capability, routing, collection, payout, provider webhook, reconciliation, and event endpoints.

Concept notes

The fiat rails ideas worth remembering

Questions

Check your understanding

Pick an answer and the page will explain the reasoning.

Reference snapshot

Rails, currencies, lifecycles, and recon inputs