Vanguard Sandbox — settlement rail receiver

This service records what a payment rail reports back after money has moved, as new tamper-evident evidence. It is an API surface; there is nothing to click.

Computed-net ≠ executed-settlement. The ledger computes what is owed. The rail moves the money. What the rail says becomes a new attested record — never a correction of the one that came before it.

Health: /health · Receipts: /api/receipts · Rail callback: POST /webhooks/revolut