Service Stack
Rust + Elixir + Go
Domain-oriented service design.
Platform control plane
A Financial Runtime Engineered To Stay Legible Under Pressure
Zentra combines ledger discipline, tenant-scoped control boundaries, and event-safe orchestration into one premium control plane for regulated money systems.
- 01Ledger-first core
- 02Tenant isolation
- 03Replay-safe event flows
Client apps
01API requests enter with tenant scope.
API edge
02Contracts, auth, and idempotency checked first.
Policy engine
03Limits, risk, and routing rules decide path.
Ledger core
04Minor-unit entries become the financial source.
Provider routes
05Rail selection and failover stay explicit.
Webhook runtime
06Signed events leave with retry history.
Runtime boundary
Tenant configattached
Rate policyattached
Auth scopeattached
Evidence trailattached
Control result
one map
Payments, cards, accounts, ledgers, and webhooks inherit one operating model.
Security Controls
mTLS/JWT
Zero-trust service and user auth model.
Coordination
NATS + Redis
Event and cache infrastructure layers.
Financial Source
Ledger Core
Correctness-first accounting foundation.
Core capabilities
Capability surfaces with explicit behavior under failure, growth, and audit review.
Explore each platform surface from API contracts to route selection, operator review, and replay-safe recovery.
Payments
Acceptance and settlement lifecycle with routing control and deterministic state changes.
Cards
Issuing infrastructure with policy controls and authorization event visibility.
Transfers
Idempotent movement, corridor routing, and support-visible settlement state.
Accounts
Ledger-centric account structures and reconciliation-friendly posting model.
Ledgers
Minor-unit entries, double-entry discipline, and audit-linked money state.
Reconciliation
Provider events, ledger state, settlement review, and exception evidence in one story.
Compliance
Embedded KYC/AML screening and auditable risk decision workflows.
Webhooks
Signature-verified event contracts built for replay-safe consumers.
01
Input
Experience edge
- Web App
- iOS App
- Partner Portal
02
Decision
Control plane
- Mobile API
- Service Mesh
- Policy Engine
03
Evidence
Money state
- Ledger Engine
- Transfers
- Cards
Deterministic money movement and tenant isolation enforced across every layer.
request > policy > ledger > evidence
- Define allowed transitions for every payment and transfer stage.
- Make retry outcomes deterministic and idempotent.
- Expose transition history for audit and support workflows.
Architecture Behaviors
Reliability comes from clear domain boundaries and explicit operational contracts.
Financial systems stay resilient when every critical action is deterministic, traceable, and scoped.