OriginProof API

Add cryptographic content provenance to any application in one API call. Ed25519 signed, RFC 3161 certified, Bitcoin-anchored.

Authentication

Get an API key from your dashboard. Pass it as a Bearer token in every request.

    Authorization: Bearer op_your_api_key_here
  

POST /api/v1/seal

Seal text content or a file. Returns a proof object with Ed25519 signature, TSA token, and a permanent public verification URL.

Seal text:

curl -X POST https://originproof.io/api/v1/seal \
  -H "Authorization: Bearer op_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"text": "content to seal", "filename": "my-doc.txt"}'

Seal a file:

curl -X POST https://originproof.io/api/v1/seal \
  -H "Authorization: Bearer op_your_api_key" \
  -F "file=@/path/to/document.pdf"

Response:

{
  "proof_id": "c7897507-62f1-42ec-ae3a-ca0d3b910597",
  "verification_url": "https://originproof.io/verify/c7897507...",
  "proof": {
    "content_hash": "e9bf48bdf3b1a837...",
    "sealed_at": "2026-05-30T18:04:48Z",
    "signature_algorithm": "Ed25519",
    "tsa_anchored": true,
    "bitcoin_anchored": false,
    "verified_by": "OriginProof | An NKA Technologies Corp. Product"
  }
}

GET /api/v1/verify/:proof_id

Public endpoint — no authentication required. Returns the full proof object including signature validity.

curl https://originproof.io/api/v1/verify/c7897507-62f1-42ec-ae3a-ca0d3b910597

GET /api/v1/webhooks/anchor/:proof_id

Poll for Bitcoin anchor completion. Bitcoin anchoring via OpenTimestamps typically completes within 1 hour.

curl https://originproof.io/api/v1/webhooks/anchor/c7897507-62f1-42ec-ae3a-ca0d3b910597

GitHub Action

Seal every commit to your main branch automatically. Add your API key as a repository secret named ORIGINPROOF_API_KEY, then create .github/workflows/originproof.yml:

name: Seal with OriginProof
on:
  push:
    branches: [main]
jobs:
  seal:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Seal commit to OriginProof
        run: |
          RESPONSE=$(curl -s -X POST https://originproof.io/api/v1/seal \
            -H "Authorization: Bearer ${{ secrets.ORIGINPROOF_API_KEY }}" \
            -H "Content-Type: application/json" \
            -d "{\"text\": \"${{ github.repository }}@${{ github.sha }}\", \"filename\": \"commit-${{ github.sha }}.txt\"}")
          echo "Proof: $(echo $RESPONSE | python3 -c 'import sys,json; d=json.load(sys.stdin); print(d[\"verification_url\"])')"

Rate limits

Plan	Monthly seals	Price
Free	50	$0
API Starter	5,000	$99/mo
API Growth	50,000	$299/mo
Enterprise	Unlimited	$999+/mo

Get your API key

Create a free account. API key is available from your dashboard immediately.

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