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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b051de74f02cd2f063442a90a7b7259aecf4c6d20240508127afc12627bff5. 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/8cf0de6c-76ba-4b11-9e26-00238bc9ceec.json and https://artists.proofprofile.net/proofs/artist/8cf0de6c-76ba-4b11-9e26-00238bc9ceec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tomorrow's Ours (As Featured In 'The Annual Marriott Commercial') - Single
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3d28897eb291a62338bcd05bb3d590d10d5a8cfea757e7502179aa1af1c826. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TW1779757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f648f132d29c8874e99449eecf9dd2718d06ed1d8f80910baf04e496701e663. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US3DF1548964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef6f93304841060422311e5e75f1b4eaf2e9de43cdd856b7b2511caea3f675b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US3DF1715271.
Slow Down (As Heard in the Television Show “Terrace House: Boys & Girls in the City”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407e4018b819b002c694d804e00392f44c02bce633c80c5630fd834f71a58da5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3DF1548978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb658940d2d077761046ed81da3a489a4f61ca8879657c4b0db9c25654be01865. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/US3DF1708856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29a6a3476880e7f8fd9193280da91a3e1fb45fb555db190c7e5893778115d80. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM3DF2294745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d9a2da1c9aa9dafea413453532367ae1704d545ffc1f2fb4ffebed786976dd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2423379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe040edce3d3970ecfdb5ea4b6bf19b335f9a1d50abb66700df985a40fbd6eaa2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3DF2505315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb999677c4b0e3a0039f028f50cbe731a6aa5ab30f0a5eaf8eae0550e94c328c9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/US3DF2527902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aca4e72627edd6b76c2ea64ce5ca65871bd120df98285167d943ec97cdad2c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2535241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407e4018b819b002c694d804e00392f44c02bce633c80c5630fd834f71a58da5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF1548978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa97110d72f419faa91288587473683bdcf4f9e83f1610a90476053a4d3fbcb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US3DF1548980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad98a2f8c829670b2d53b0e85ac4ac348992f3bfb6d3ccebc666e8a1d0bcc2a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US3DF1548983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0e687e12e817792299704a58f9904d71c72f71ef545a8e850a34ba0121b494. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3DF1548987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f648f132d29c8874e99449eecf9dd2718d06ed1d8f80910baf04e496701e663. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US3DF1548964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb475c8dbbb31e33087646943f9a7427e852ec850dc9b31febe108de50f3511b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US3DF1548970.