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 0x22236aa984b7b30493db9538493ace0532545b62daa5443896e08099188e4037. 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/ba758c21-a6de-4d0d-89bf-0a59b9bfeb38.json and https://artists.proofprofile.net/proofs/artist/ba758c21-a6de-4d0d-89bf-0a59b9bfeb38.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 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 0xcb642fd73876831a1d8e6c1568eb57936d05a3ff92754b58f4da340775de1d54. 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/TCADW1840838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607d613a505afd841d1701382ed01afda585212192884c46a08e8304ca6314ed. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCADW1840842.
A Streetcar Named Desire (Original Score)
The Windermere Children (Original Film Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec45d161e7923ec0c376873ff259941b3a4d4390236ca615bd50703f342b668. 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/GBARL1901453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692307bc6b2906efdfcaa1a6332c582377ff4516857d5cbb90dff66d8cfd25c3. 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/GBARL1901461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946575b60cdeb750bd18c7c31482f6f469bbf56637f1986a0c04441a49225b5a. 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/GBARL1901467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc5809cd15df6177b918eddbf30148b16a51dd1c02e0fabc2c29a9176c8b4c0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCAEY2009907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c1908ff9c188bb9bec0981bffa98d84fa327328144c5b8db1077d6572b194a. 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/TCAEY2009909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094ee2f3e4cd70f728b55e3d3da3f681d35cd9f3efaabf0d7deebaa761c27802. 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/TCAEY2009910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c42ddcc3034a5a0d49d22d03ce6375b8d002b9ecc4b2b0cb6ccae8cbcf10993. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAEY2009914.
True Things (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc530428c8d080a80cb6e5742ed03549ea8c5172fd14f039322364a555c880bef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CALC42200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53057a680f5cdd7e8967f9de6f970444974cf48443b24a4a7a7e7d4a80d7f10. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/CALC42200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1370ae7e2429454adc70859f01b65b387e0f2609a6691e8625b8875930500b0a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CALC42200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5929db9bb640fed07bb4d3707d9e1f5da5b1c1032aee05323e3088dc58b6d94. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/GBCMQ2300002.
Rain Dogs (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdc591bd939c8510e48502c8c0f099b0c1bad6473c3d62c48cc147b540ead3c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBBC2301502.
Locked In (Soundtrack from the Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef40bc589061bf486e692e68809b5b08f6cdc0871b3aa717bd469728f8191d4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ8BZ2306595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec39428ca331647bb6067c548fa40edb2db2b0133d37cc4217438ce886a8c16. 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/QZ8BZ2306594.
Midas Man (Original Motion Picture Soundtrack)
Introduction / Basem (From "The Teacher")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ff813d608e7996d72f804b6af0a54b83cbec3fe8507471a7d05d18ae3907c7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBCMQ2500002.
The Teacher (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ff813d608e7996d72f804b6af0a54b83cbec3fe8507471a7d05d18ae3907c7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBCMQ2500002.
Brides (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b63ba6fe440ce1de765ac4ef7b5830a90ccf966b575de315c7b89386c48470. 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/SEYTP1505004.
The Kitchen (Score from the Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61ebd2d7e0c68b41198e0ce0bddf387df8beb4fbbd25feea74bf7db10cddbe9. 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/QZ8BZ2408610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda537f712ef8e4038fa4e5252a3eabc3840831ea8ddc93da2adc9fa7ea3a3047. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ8BZ2408612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b28ab656cdbfc322735c3304ab5bd89ab1c1f1857c44fd2fc51fffaad2ffd16. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ8BZ2408613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2d42a1357b91be9fd3c431c72a71526934a6b5b3340b1f47149bef22aac624. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ8BZ2408615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f90216a4f49e65e84e4d54a7ce0500348c7a837a86b470e5b7683d3b6e9f4b. 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/QZ8BZ2408616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38d3c53e3a039b60821b000785beeacfd50d28218f26f60b3fcdb623f0f3127. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ8BZ2408617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c8229df844f6529e78cdd2264d9a37f0c0b3da3e8925fd2c32babd72cb1348. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ8BZ2408619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c3e506c0b1b6cc94d486700ebc935c267df5d185519739f68022a127b532df. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ8BZ2408621.
Spheres - Einaudi, Glass, Nyman, Pärt, Richter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82352b183175a7738fa519b4c9652c2b0ba2ead924cbb730c4cd3b488df64878. 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/DEN961201800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7175742557300cdb5e9069a76844aae073658263ead02efe93a485ce1054e6f4. 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/DEN961201830.