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 0x642794fe7e5938a591fa07d651f5b4d9f816a61d46504cf4ca4b628cf39407f3. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/595c6128-c762-44fd-95fd-afc8aab36472.json and https://artists.proofprofile.net/proofs/artist/595c6128-c762-44fd-95fd-afc8aab36472.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x0eb29655b3a78427953f7a8cd5a87105fef1e951b040586cd938ac3355d93fd8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES5079400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470eaaf7a0f2f02069bece16d80af8d6b95e05bcfddbc804d0b282040c0caf76. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:13Z), 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/ES5079400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b1f787ac90b94db5aa00056ea407a4a4c0b2f5a4c18fdf1cd0d1f1d485dd37. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:40:38Z), 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/ES5079400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f04abc5b28660165b824b545bd833cdbbfd18621f24951bb917e28c2b4d88e. 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/ES5079400073.
Jota del perro del hortelano / Jota de la Virgen del Pilar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1b5837fec28e83c1e3370d7872621f840640521c328908077fbb31c7d7065d. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ES5079400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd778f504672e195985d8839f60685eafd648a65a37cb64bd68878e4508d82445. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:58Z), 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/ES5079400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a0b3b55ba7ee6b0d3578b17bc368dfb5cd54800ec04fd8ea556750fccb4a37. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES5079400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466585700eef26ba5570e6ecea5ec7f7b563a0f7cd95f05aecad07c96de76582. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES5079400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fa2f507b62a3dc962b74e0bd3e59605fcc99a962bfd0e350bf67ebd94f785d. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/ES5079400084.