# Payments

> Phantom Secrets™ for payment infrastructure. No stored credentials, policy-bound transaction execution, and cryptographic auditability for every payment event.

## Where It Fits

- Card-present and card-not-present transaction signing
- Inter-bank settlement and instant-payment scheme participation
- Stablecoin and tokenised-payment issuance and redemption
- Merchant acquiring and PSP key management

## What Changes

Stored merchant keys, terminal keys, and scheme keys are replaced by ephemeral keys reconstructed only at the moment of authorisation, only inside certified hardware, only when policy is satisfied. The credential becomes uncopyable because it does not persist.

## Related

- Phantom Secrets™: /api/md/products/phantom-secrets
- PhantomGate™: /api/md/products/phantom-gate
- Banking and Finance: /api/md/solutions/banking-finance