A tamper-evident, append-only cryptographic ledger with quantum-resistant signatures — built to run in isolated, air-gapped environments for governments, defense, and enterprise.
Every entry is signed with ML-DSA (CRYSTALS-Dilithium, FIPS 204), so the chain stays verifiable after classical signatures fall.
An immutable, tamper-evident ledger — each entry is cryptographically linked to the last, with built-in checkpointing and crash recovery.
Designed for isolated networks. No external dependencies, no internet, no chain-indexing service required to operate or audit.
Connect multiple nodes for redundancy and resilience across facilities, while preserving a single tamper-evident history.
Access is gated by PQ-signed license validation, with an issuer public key bound into the binary — controlled distribution for sensitive deployments.
A simple REST API plus built-in chain-verification tooling, packaged in Docker for repeatable, auditable deployment.
A REST surface over a hardened ledger engine and append-only storage — deployable on a single isolated host.
REST API POST /entry | GET /health | GET /chain/*
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Ledger Engine entry validation -> hash computation -> PQ signature verification
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Append-only Store file-based persistence -> checkpointing -> crash recovery
Tamper-evident records and audit trails for public institutions with strict data-sovereignty requirements.
Quantum-resistant integrity for classified or controlled environments where systems are air-gapped by mandate.
Immutable, independently verifiable history for compliance, provenance, and long-horizon record retention.
NotaryChain is a licensed, commercial product. Contact SmartLedger to discuss deployment, licensing, and air-gapped delivery.