CreatorLedger, prove who created what, when.
Local-first cryptographic provenance for digital assets. Ed25519 signatures, append-only event chains, self-contained proof bundles, and optional blockchain anchoring — no cloud required.
Install
dotnet tool install --global CreatorLedger
Verify
creatorledger verify proof.json --asset artwork.png
Inspect
creatorledger inspect proof.json
Why CreatorLedger?
Provenance that works offline and verifies anywhere.
Ed25519 Signatures
RFC 8032 compliant signatures tied to creator identity. Official test vectors included.
Append-Only Chain
Events form a hash-linked chain enforced by SQLite triggers. No updates, no deletes, no tampering.
Self-Contained Proofs
Export JSON proof bundles that verify offline without any database or infrastructure.
Derivation Tracking
Know when work is derived from other work. Full provenance chain from original to derivative.
Blockchain Anchoring
Optional timestamping for legal-grade evidence. Pluggable adapter pattern (Polygon planned).
Cross-Platform
Windows (DPAPI), Linux (libsecret), macOS (Keychain) — secure key storage on every platform.
Quick Start
Install & verify
# Install as .NET global tool
dotnet tool install --global CreatorLedger
# Verify a proof bundle
creatorledger verify proof.json
# Verify with asset file
creatorledger verify proof.json --asset artwork.png
# Machine-readable for CI
creatorledger verify proof.json --jsonBuild from source
git clone https://github.com/mcp-tool-shop-org/CreatorLedger.git
cd CreatorLedger
# Build
dotnet build
# Run 222 tests
dotnet test
# Self-contained CLI
dotnet publish CreatorLedger.Cli -c ReleaseTrust Levels
Every asset gets a verifiable trust classification.
CLI Exit Codes
Designed for scripts and CI pipelines.
Solution Layout
Clean architecture with five focused projects.