SINT Persistence — storage interfaces and adapters for ledger, tokens, and revocation
Append-only double-entry ledger primitives — account hierarchy, posting/transaction with sum-to-zero invariant, balance assertions, reverse-only edits, optional bailment-mode invariants
A zero-dependency, append-only ledger engine that derives every balance, status, P&L, and deposit figure as a deterministic fold over one immutable transaction log.
ledger based database
webycash server library — asset-gated ledger (webcash, RGB, voucher) with Redis/DynamoDB/FDB backends