Initial release #1
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This PR transforms the simple C2PA storage service into a verifiable transparency log by implementing cryptographic proofs and an immutable append-only structure.
This is a continuation of the work started in atlas-cli#35 from the atlas-cli repository. Key additions include Merkle tree implementation for cryptographic verification, Ed25519 signatures for manifest authenticity, and support for JSON/CBOR/binary content formats.
New API endpoints provide inclusion proofs (/manifests/{id}/proof), Merkle root access (/merkle/root), and proof verification (/merkle/verify).
The service now ensures data integrity through append-only guarantees and enables third-party verification of manifest inclusion. Enhanced with Docker deployment, testing, and atlas-common integration for standardized cryptographic operations. This transforms basic CRUD operations into a transparency log with Certificate Transparency-style verification capabilities.