Open-source, real-time transaction validation engine for fraud prevention — CEL-based rules, spending limits, and audit trails with sub-100ms decisions. Built in Go with hexagonal architecture.

Financial transaction validator with fraud detection, AML/KYC compliance checks, and business rule enforcement

NomLedger is a storage-agnostic Go validation engine that enforces zero-sum accounting, period closure, currency consistency, and exchange-rate tolerance on in-memory financial transactions before persistence.

Rule-based evaluator for validating fund load attempts using velocity limits and regulatory constraints.