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Phase F · Step 6 · Open provenance format

ContentDNA Provenance Specification

An open record format for binding a registered publisher resource to reproducible fingerprints, source metadata, a Rights Passport, and an Ed25519 provenance proof—without publishing ContentDividend's proprietary matching intelligence.

Download open kit 1.0.0SpecificationJSON Schema
Portable fingerprint

SHA-256 + open canonical-text profile

The portable digest uses a documented Unicode/whitespace normalization profile so independent implementations can reproduce the fingerprint when they have the same submitted text.

Signed provenance

Ed25519 proof

Public provenance records are signed with ContentDividend's existing signing identity. Verification proves record integrity and provenance of the attestation—not legal ownership or permission.

Standards coexistence

C2PA and W3C PROV aware

ContentDNA Provenance is designed for external linking and maps basic entity/agent/activity concepts, but F6 does not claim C2PA certification, C2PA conformance, or W3C endorsement.

Private intelligence protected

Format open, matching engine private

Similarity algorithms, ranking, private corpus comparisons, crawler intelligence, and commercial evidence analytics are not part of the open specification.

Public endpoints

GET /.well-known/contentdividend-contentdna-provenance.json GET /v1/public/sites/{site_id}/contentdna-provenance GET /v1/public/contentdna-provenance/{entry_id} POST /v1/public/contentdna-provenance/verify

Example record

{ "schema_version": "contentdividend.contentdna-provenance.v1", "publisher_id": "...", "site_id": "...", "entry_id": "...", "canonical_url": "https://publisher.example/article", "fingerprints": { "portable": { "algorithm": "sha-256", "profile": "contentdividend.canonical-text.v1", "digest": "..." } }, "proof": { "cryptosuite": "eddsa-ed25519-contentdividend-2026", "signature_b64u": "..." } }
Rights boundary: provenance records and fingerprints do not create a license, prove AI training, prove infringement, or replace the publisher's live rights state.

Open helpers

Python helperJavaScript helperMIT License