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 0x9217f701d97ba6656634ddc55714f4e8cc8217b466d504d88638565b647920a9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1197462-0676-4e1d-aa55-3c444af872d8.json and https://artists.proofprofile.net/proofs/artist/a1197462-0676-4e1d-aa55-3c444af872d8.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 0x67f299a8035310a0f959d0a9da7e46ab409a9a2e67203c3c9442d08c54cd555e. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/ES69B1400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a4d88d49d1d2ab9f1d57cc09321a4b20e0d63b4ea2db2c106dbf69321ca0c3. 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/ESAAI0230579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326c840fa02af5f3a9b16c52e1a5cd552f742215e6fba0484d8f44a34d04f0f1. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/ESAAI0230581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e22e4ea7e03c4c0c08da03bb59d52551a3f1390d605f1527183394056a4306f. 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/ESAAI0229981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8bc27cce73bda548a226971f081860863bed924d6edfcf779d85a6e12692c4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ESAAI0229982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac85ceb174870756250ba2a2608a3eb6ff0e174fb25fbe2e1d7adf397b5e6a79. 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/ESAAI0229989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289400411222dad2c96df36a5a31f6ab8818f0869b0896f31a30b8512a06c66d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ESAAI0229995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c8e1909934fd7e1362ca187d5bdd969778b1dea2adcd17ca54bd916313bb62. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:49Z), 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/QM4TW1936550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49b7766cf07af9935654819514a29bf3ab33d9de1b9830cd670ab5ea9ff69b2. 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/QM4TW1936551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32044d3c4f2517fa145af952ec8d515ae3b736ae59aef3102168467953f18ebd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES7421300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6591adce833d5fa6ae4183f9531dc1b3116494391580c9603090df537b6429. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/ES7421300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890d4baad6862f3a5c9733251e84eaa5f0e96c8435a0a343db4bc9849d3ba736. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES7421300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7992d495cba5764435de4603dea48b9c8edbd1c14acbeb0d4f4b20d7cbc0c5d0. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ES7421300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1d6968cff2ab07c6c8ac4cc2aacbbb185eb35bc64f564bb2185392286099ad. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES7421300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69396419bf30252ec61485fdb5fe439eb5bb31c026e6d0a45ff19ddc8e94fe8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:08:22Z), 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/QM4TX1860335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ba4576bbeceffc8956413838d061d6bfaf6214283f2b58c5c5b57b575e3a34. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM4TX1860339.
Grandes Éxitos de Los Berrones (En Directo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f94ab4ed684793bef64ffd38f8c94428bda3a39229122f2919ff434d0938ff. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFME2227881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4d52e365252817ea9d4a19c6e3e3ea0e1643ddf47e9bd5dfb17b8b2f3563d5. 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/USHM21136611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6b834b79c1224258fe65c4425364fe90fdf61239271aa0089b62cdb9fa7091. 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/QM4TW2544632.