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 0xa21db5e3cfa7d1689589491c72c69696aaa06cf3541532826842d39c22cde91a. 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/8c4c133d-f2a3-4d07-bcb9-ab2326ad6e76.json and https://artists.proofprofile.net/proofs/artist/8c4c133d-f2a3-4d07-bcb9-ab2326ad6e76.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 0x1b38eeb54eaf56fe75c10a10bfb21eb21fc1a61b4343d0b578d0adcd5c1b7485. 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/DEE790919920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ffd9676d8ee3b503e96c56dc38f372ab18a4b0257a3b69ff3b5ea64b97fe48. 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/DEE790935680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03df0c3f4aeb5e07755ae00a4c7c9fbe786ac5b543f07f7f0a6332744bcf6148. 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/DEE791808520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71b3d991062bf3dd89dfd7944ee586a3a6b8e5f5a8b10f5ac3d491b61c3e9b7. 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/DEE791307010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ba0d892a02d8a4f9503b84daa43c825f55ed08a204c4d6a66b263805354c43. 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/DEE790923020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662f4a5e717d4c7682814f68d2015cf666e773aae7e2d1ad4a0e406c81d7db9a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEE790412830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1c6bfe54c6ce3147e40af614459cb85176a7ff4b33492f10abcca63b87b2ae. 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/DEE790051200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dbd2b84662a1821cf969ba7aad1931f73cbc4d2a897f2c710df95b5ed56aa3. 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/DEE790935690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8180b5594d8c5cd31e2d2d0db44cab0c3bba2b8831247988f6c57414665ec211. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEE799910310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac39ea8f452b43aa64f77cfa129afd9ffa8e4c229c28641387783f0319715f9. 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/DEE791808530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f73c4d5560e0968184802032c42fe0cfc13deaafcc427494db8c477d630e02c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEE791808540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128d639c7084d0d3a7af3fbb98ce9a9b359e6f6ce0cba8ce166c7e26a1501549. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEE790412710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe45dcfc62ff1855276136abc122d46e7ea1eb1076b6784accab32120f9d5f78. 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/DEE790935670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d8057ac70476da6111f6188f06aec55658265082354979ca6a9b0895ac5f9c. 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/DEE790922960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b52c96f02897f83987558aa1b283ea2a3d0c52c472590754e4ed31301ff69f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEE790919930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1d7bc414e93d0222968dd13dac5cb76373f037c2409f31ff6ea2d3f1271de8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEE790412500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17e7ed7e3679298161d9bf970c34360d5d34b78701f8f52c8ca9bb951b0d237. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEE791808510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c37f2effb3a2e320c6d27ebb6c3764c6dce2ab667196ab1dc78d6a64dc7c86. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEE799910400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2763f6efa64bfc63b34010706e1e3f0e31d313524feb8fb569d0e0219920b2. 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/DEE790412540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7522bcf4571d35ab42685ae7dadd700be29a57504f93fbdd7cb0e2fc635f15. 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/DEE790513200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8f0a84356b52c25bc9d00738da77f1ff0564c642a6216cf986359d7c70c172. 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/DEE790051130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f8de12239533495fde054c4a603a207d46e9b875c2506532879237af793055. 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/DEE799910340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae52653545f8741c51667bac67280c30e34ece5240d8fa7cb95c2aad6647955f. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEE790412700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f4557baa7b7b6ab5cefbf25711464187db5d1d0ccc83e1b0dcca2360cfb521. 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/DEE791211050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b61bd3c94a9deb9489e48690a9f9ef0d35e30c27647e8de0edb299cfa4242c5. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DEE790513260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4a43809b4b5e9645073c3d626bf516ee1c166e3f6bc2373c3be0edc1dc1622. 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/DEE790919950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bda0f2c968bb588335794ebcf337058c9e464f10313900ec8d60a29521937d7. 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/DEE790110640.
Gran Afro Cuban Orchestra de Generoso Jimenez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1163056a0f603f2c4145e5fa62dc5b64327e5d176bd7582c942f393d484de580. 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/DEE790010710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f2ca2a2d81f50c21ce0621d48bffc9449b774545e0a67abed59c4a7c097029. 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/DEE790919810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b47c1612ebdf6743c5fcacf59b8399dd6d5e264913cf487f187832e6cf37115. 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/DEE791903080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb92491ec8228178ad00265c837980f47b9dd5306543cb17c682df1c6e8db272. 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/DEE791903090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6f799b263c265ab294074e3a4461b67fe33ed50c04a010b7c3120b2392794f. 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/DEE791305030.