Stablecoins for banking integration
Rust and Java building blocks to help banks integrate stablecoins and settlement flows — initial focus on Morocco, with room to grow across MENA.
Rust, Java, Stablecoins, Banking, Morocco
A pragmatic rails layer that lets banks and licensed payment partners issue and settle stablecoin-denominated payouts (USDC, EURC) without rewriting their core. Rust handles the on-chain edge and signing; Java services on the bank side own the ledger, outbox, and reconciliation. First country in scope is Morocco, then MENA.
What I’ll build
- USDC / EURC settlement adapter with deterministic intents.
- Idempotent payout API with KYT / sanctions screening pre-chain.
- Bank-ledger debit + outbox pattern; eventual on-chain settlement.
- Fiat on/off-ramp connectors aligned with Moroccan partners.
- HSM/KMS-backed signing — never raw private keys in services.
- Append-only signed audit log per settlement intent.
- Reconciliation worker comparing chain receipts to ledger entries.
Architecture
A Rust service (axum + sqlx) sits on the chain edge, screens transfers, signs intents via HSM, and persists state in Postgres. Java (Spring Boot) owns the bank’s ledger, drains an outbox, and calls the Rust service with an idempotency key.
Stack: Rust · axum · sqlx · Java 21 · Spring Boot · Postgres · HSM/KMS · Kafka or PG outbox
Roadmap
- Sandbox: USDC on a testnet + mock bank ledger end-to-end.
- Pilot with one Moroccan partner — corridor + KYT integration.
- Production payout API, signed audit log, and reconciliation worker.
- EURC corridor and payment-initiation flow.
- SDKs for partner banks (Java + Kotlin first, then Node).
Interested? Banks, fintechs, regulators, or builders looking to pilot — email contact@imaddhin.com.