1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cc3acfb3ed462691fd345db4acb3305176a0ee4418328d5f8f0c20066f1b94. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f09d3d0-67ad-4606-bb05-5c132f6f3070.json and https://artists.proofprofile.net/proofs/artist/2f09d3d0-67ad-4606-bb05-5c132f6f3070.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Miroirs No. 3 (Original Motion Picture Soundtrack)
Miroirs, M. 43: No. 3 Une Barque Sur L'océan
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b1b2e5860089443f0e294a390707afe52812ffda5ac22675306e5bc5e2fe47. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62507631.
24 Preludes, Op. 28: No. 4 In E Minor. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72c49a7caf17746f06d0c6c6e98a96c1983c00c8028bc482c854b97076984a7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62505296.
Trois Morceaux pour piano: I. D’un vieux jardin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef154fadc3bb9098673393ca17196b70c02f4271262722249e6a677e321bebe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DET902486701.