Domestic
PAYMENTS SIGNAL · REFERENCE CARDBrazil Pix — instant payment
Riya pays Arjun in seconds using only his Pix key. The DICT directory resolves the key to his account, and the SPI settles the payment individually in central bank money — final and irrevocable, around the clock, with no fees.
Actors
- Riya (payer)customer
- Bank Alfa (payer PSP)bank
- Pix / DICT directoryinfrastructure
- Nordbank (payee PSP)bank
- Arjun (payee)customer
- SPI (Banco Central do Brasil)infrastructure
Messages
No standard message — a book / internal transfer.
The sequence
| # | Step | Route | Kind |
|---|---|---|---|
| 1 | Pix key — Riya enters Arjun's Pix key | Riya → Bank Alfa | message |
| 2 | DICT lookup — The DICT directory resolves the Pix key | Bank Alfa → DICT | message |
| 3 | DR payer — Bank Alfa debits Riya | Bank Alfa | posting |
| 4 | SPI settlement — The SPI settles the payment in central bank money | Bank Alfa → Nordbank | settlement |
| 5 | CR payee — Nordbank credits Arjun | Nordbank | posting |
Exception rails
| Rail | Trigger | Where the money ends up | Next action |
|---|---|---|---|
| Pix key does not resolve | The Pix key Riya entered is not registered in DICT (a typo, or the key was never claimed), so the directory cannot return an account. | Untouched — Riya was never debited because addressing failed first. · No settlement occurred; the SPI was never asked to settle anything. | Riya — Riya re-checks Arjun's Pix key (or asks him for it again) and retries the payment. |