ATL-Core

Pure cryptographic library for ATL Protocol v2.0.

Provides cryptographic primitives for verifying transparency log receipts. Contains no I/O operations — all functions are pure and deterministic.

What it provides

• Merkle tree operations per RFC 6962
• Checkpoint parsing and signature verification
• Receipt parsing and structure validation
• Anchor verification (RFC 3161 TSA, Bitcoin OTS)
• JCS canonicalization per RFC 8785
• Cross-receipt verification via Super-Tree proofs

What it does NOT provide

• Storage backends
• HTTP API
• Anchoring clients
• Receipt generation

See ATL-Server for these features.

Source code

• Repository: github.com/evidentum-io/atl-core 
• License: Apache-2.0