1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x306f03134416141a82aa3ad617877dfdac4c0947745ad3d34a691b2b3e0aa9d2. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/930ddb54-3bd4-4501-9eed-321cbec921b2.json and https://artists.proofprofile.net/proofs/artist/930ddb54-3bd4-4501-9eed-321cbec921b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Let It Snow! Let It Snow! Let It Snow!
O Come All Ye Faithful (feat. Darrell Grant)
Noir Medley: Touch of Evil / Laura / Vertigo / Chinatown / Taxi Driver / Blues in the Night
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 → block OTSBitcoinBlock must exist at that height 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 0xe2abbad71e2629fff81ec23122ed228bdf3552cd8b55371116085d4b26b06acd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US89K1600011.
Drinks and Dinner: The Jazz Set, Vol. 15
Home Surroundings: Jazz Cocktail Party Mix, Vol. 7
Kuumba Blues (feat. John Heller, Rob Scheps, Bill Douglas, Alan Jones)
Portico Sessions: Jazz (Body & Soul), Vol. 2
The Outlaw (feat. John Heller, Dave Ellis, Scott Amendola, Trevor Dunn)
Meritage Best of Jazz: The Tender Trap, Vol. 4
Meritage Best of Jazz: Moon River, Vol. 14
Portico Sessions: Jazz (Round Midnight), Vol. 1