anchoring-examples

Every artifact in this repository is anchored to Bitcoin.

Verify any .proof file at verify-anchoring.org.

---

What is a .proof file?

A .proof file is a self-contained evidence bundle that proves a specific file existed at a specific moment in time — anchored in the Bitcoin blockchain.

release.tar.gz          ← the artifact
release.tar.gz.proof    ← the proof (certificate + OTS)

The proof is independently verifiable. No account, no vendor, no trust required.

Examples

CI/CD build artifact

examples/ci/
├── build-output.tar.gz
└── build-output.tar.gz.proof

Anchored automatically via GitHub Action:

- uses: AnchoringTrust/anchor-action@v1
  with:
    file: build-output.tar.gz
  env:
    UMARISE_API_KEY: ${{ secrets.UMARISE_API_KEY }}

AI model checkpoint

examples/ai/
├── model-v2.1.pt
└── model-v2.1.pt.proof

Proves this exact model existed at this exact time. Useful for:

• Training provenance
• Audit trails
• Regulatory compliance

Dataset snapshot

examples/data/
├── training-data-2026-03.parquet
└── training-data-2026-03.parquet.proof

Proves the dataset was not modified after anchoring.

Open-source release

examples/release/
├── myapp-v1.0.0.tar.gz
├── myapp-v1.0.0.tar.gz.proof
└── SHA256SUMS

.proof sits alongside SHA256 and GPG signatures as standard release artifacts.

How to verify

Option 1: Online (no install)

Drop any .proof file at verify-anchoring.org.

100% client-side. Nothing is uploaded.

Option 2: CLI

npx @umarise/cli verify build-output.tar.gz.proof
# Hash Match ✓ | Bitcoin Block #881234 | 2026-03-05 | VALID

Option 3: Raw OpenTimestamps

unzip build-output.tar.gz.proof
sha256sum build-output.tar.gz    # compare with certificate.json
ots verify proof.ots             # verify against Bitcoin

How to anchor your own files

CLI (one command)

npx @umarise/cli anchor myfile.pdf
# → myfile.pdf.proof

GitHub Action (one line)

- uses: AnchoringTrust/anchor-action@v1
  with:
    file: myfile.pdf
  env:
    UMARISE_API_KEY: ${{ secrets.UMARISE_API_KEY }}

SDK

Node.js:

npm install @umarise/anchor

Python:

pip install umarise-core-sdk

Get an API key at umarise.com/developers.

Links

• Umarise — Anchoring Infrastructure
• API Reference
• Independent Verifier
• Anchoring Specification (IEC)
• GitHub Action

License

Unlicense (Public Domain)