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 0x5278208da19122328ad87a6b28e72cb62fa3277fd0a770357bdcb4e87a2155e5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2649ad57-7430-41ed-baa4-ccdeed45a12b.json and https://artists.proofprofile.net/proofs/artist/2649ad57-7430-41ed-baa4-ccdeed45a12b.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 0xfe8617c496b8ce43697625d2e41d22e8f1a6ede64a6629ca530084341f9e0c68. 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/FR6V80626516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47f111434ba4a203d2b66de9a9f669a7aa9f4299afe3e4bfc3168a2eab5d1ef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V80626517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6735c92a9ede15f569b8cdb7897e6e2bd0ef234a1379f9d8f546dc8a4a7841. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6V80626518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057a57cc14f43168141091563998765484bd89df8fe7303ff015bdbd8585ea41. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR6V80626521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c99860e8ae9fb48dc9a973897e7bfe8111e451247c8c118758d092282d6ff36. 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/FR6V80626524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6974a956d9753b34f98670851d90a895334c7e3beb4504836fa25a75ba327328. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR6V80626525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01027ee2fd896420790553063991b9a0468aa6f481b268a4d85cdb27678dbf9. 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/FR6V80626526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905b9380b9cb3ea530a9fdead9396ea102456d0c42254669d05bd8e5bd3b4ac6. 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/FR6V80626527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38a68b9aa4e9ab2a395d8cad0e35047c4ffd20597179c72a21eb2c3cd14fed2. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR6V80626519.
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 0x2ad5760b98319e700399aca0a6000b8ba529481bd0f78ca07a8dafde63b66f43. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FR6V80626520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6902aa05d4c85520b22df8ef3f30a5ca17b2e2be0c3d0f0a60c8b44c044f0a1. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/FR6V80626522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa221e669a999ac68fafcdf094cf6f0ed5cd9f14b2944d0b994ea9849c5daa588. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR6V80626523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf716b85a70d72fc84b190562956fbcbfb0b182365fb8aacf42c1e6c39c2d842c. 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/FR6V80208278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335d336424a098d6c5a57ced64c9411a1e6c4a644e9be6b90ee493664ff097ea. 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/FR6V80208279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7150164ccb90d61f191d5b66a8872d21e7f1ccb264eda67805308bb7a59f2ff. 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/FR6V80208280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3caf89fc255be90b6e5502a45c91a04195cec545843521f999e3656bad7560. 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/FR6V80208281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37139e7e62c91df23f10e9e12e7b62f9ab928ad133acd987fd6b1e90c938da2a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6V80208282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c304b872e710c1971951fee945d869824fab462fd9a3307bc0540230871996b. 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/FR6V80208284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9983fb4d51aca7278b3832f85c327264c80da9a1cb35dfa65f8df2b471f4324. 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/FR6V80208285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa3bb8ea310828bd65cd5a88cfdac7086a1c96b6d4d2ae2beb11cf869068561. 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/FR6V80208287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b967db98162030eeb7e4792916b28f85fa5f889a7a8bea51254c3d4be31469. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/FR6V80208283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd4881a55590dab0f88f5629bd58e7b97c70f288a86720d840b7003885aa920. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FR6V80208286.
Putumayo Presents Bossa Nova Around The World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5140453f62cfffaefab4dd501df4b6a90af38791ae3f624af2b9d9e6cfbabe69. 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/FR6V80626515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffb20761cf708915ad685ab985bba8df75fa41066d3c332fc941ea783edd0df. 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/FR6V80208277.