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 0xbf6f72958e4d77fadf537208f37842f0b937fb2039d7c6cfa362e43949a6c898. Chain 2 (Bitcoin): anchored in block 954004 (2026-06-16T21:01:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32d515bb-28dc-4ef3-8964-03f4de99374c.json and https://artists.proofprofile.net/proofs/artist/32d515bb-28dc-4ef3-8964-03f4de99374c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Balinda (feat. Vinnie Colaiuta, Chris Colangelo, Rick Margitza, Bill Cunliffe, Jake Langley & Alex Acuña)
Le Coq Records Presents: The Jazz All Stars Vol. 2
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 0xcd52ab39a2ccba9a224183a19014348bbc3fdcd5bc805de509d0d92e711cfc86. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLD91735815.
Papa Loves Mambo (feat. Lolly Allen, Chris Colangelo, Marvin "Smitty" Smith, Alex Acuna, Michael Dease, Rick Margitza & Terell Stafford)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a615c1b2c75ee9af1fd59559be557cc66e673c23420579afa3264a5e7f8e6f0. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZBMN2000109.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Sweet Andy (feat. Rick Margitza, Terell Stafford, Michael Dease, Bill Cunliffe, Chris Colangelo & Marvin Smitty Smith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf207ccad2d17bbf75ec8a7a28ed573a950e5208dd09c78c633e58b1b909797d3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USLD91721917.
Doodlin' (feat. Andy James, Marvin “Smitty” Smith, Chris Colangelo & Bill Cunliffe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa865d9c1b5fde221c66cd439611b5b505c47d6770705e5cc36becf2528cd35ca. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USLD91735814.