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 0x74d0a35a2e7d9ddff887e3d473ac20487bbdcbc880994a1b3bd5d2dafa684b21. 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/fc100756-dd9a-4c92-977f-45bb5519875d.json and https://artists.proofprofile.net/proofs/artist/fc100756-dd9a-4c92-977f-45bb5519875d.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 0x64ce48272f580254e880df8772ef724e075e35c76bfb4335ce7b26905484e80b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA561057784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aad7c3a7cd9710a5f172b1716ad2817b5479df14ad4e75eb57fa1ddf69eab5e. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/USA561057788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb328189b1bdd7cbc7eec8e5b355f728b8b8992ff8c3f6141eef4b72001e4ef65. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/USA561057791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22da30143d90954f67ca739432eff07b1d9218672b273491ee6af83527cebe90. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USA561057793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da88bf28402b5cc2a46163e9312b4551e83cc73b693739219b2789dab4a5ad4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USA371100240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac4cea39a945a076e124155bbabd385c8fa8274e6e392299cfaaa438377b7b3. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USA371100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a955c2ec035991266d4d786f21f8f03410c36b33f66b579f8fe70943354d1c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA371100245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938007c7ac4f65142a54466c0541a0a522caf6824517666e90c0b1410ece7f92. 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/USA371100248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b46c6f1540f354268d0d84ff1620f068817ce9eed1b435835e218b70af26ad5. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USA371100229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef19bf481869574e380fa3254419ed462a80839d9e9b74996a198f128a35665. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USA371100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0b646b37430e22e4154e4c7231d10d09afddd3a9bfa580e557868838c58aec. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USA371100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c687aee85fdf4f804c30c7b80af76db38c9f00c45fedc0eabd4019a28e60b7f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA371100236.
He Aprendido A Volar (Gipsy Rumba version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015b44f99d3ced01419e470bfb6c057ef68a35e2f71b4c981f094d0258bc27c8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USA371100233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f49db64a0eeb2b9ea2e1399c09aaf0439010f81fb53984049529a4a95c258b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USA371100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d5825d3f6b43ebe53cd89374a2cf8a947d023f7811d7a687755e39eb522ae1. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USA371100588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94934448015795fea343e024f92ebd02d77d4e0e5625865605cb4644e233df48. 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/USA371100579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c269f7a0552f1e85466c5e60e5746a43ab74f4b4c6c02cbc2604646eaf7b251. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USA371100577.