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 0x5f6a81726873d79c6ecbcd632152b8df01137a165dc29d6703605bf7ba995f50. 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/20b5fdb0-5662-44d1-bc92-b6d6142aee2b.json and https://artists.proofprofile.net/proofs/artist/20b5fdb0-5662-44d1-bc92-b6d6142aee2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Favorito Discplay, Vol.1: El Fascinante (En Vivo)
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 0x80f5133be50cdf8134d81b497c3f6fa9d047b039fe34b40df96220620cf32396. 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/QZES92125088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907baaaae3a9db48bbbb7d9d4ffcf6c998520619fa502e8e213ae6abd7a41c3f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWY2105615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694178a40a465c1691595dbfd672a9cecc42a6e6f08e78a69e7c858cb449eea8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZN882322437.
Ella Quiere Que Le Den Pam Pam (Popozao Guarapo) (E)
Ella Quiere Que Le Den Pam Pam (Popozao Guarapo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075304510e4f52542b4c6a9a654df03476956a04f9bee0c19395d3c04a657cac. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZN882342418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30202caeab9b332bf1966253c8fd27e70b5777f11d5383f5d9bd0a950cf51fa5. 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/QZYFZ2345465.
Un Clavo Saca Otro Clavo (Yaper) Guarapo [En Vivo]
Un Clavo Saca Otro Clavo (Yaper) Guarapo (E) [En Vivo]
Un Clavo Saca Otro Clavo (Yaper) Guarapo (E) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3652a6dd152f137cb64b88185b531405335d2feffe64dc41cc27a265a1e690c5. 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/QZYFZ2348186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb611e8db332645d67981e45aeab7b26450692bc7f2c05fc59f88c2b3ef545f21. 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/QZZ662349990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef60c8e921c3ddf9dc936959cc2abf214e1df3bac547fee8b40f4f8ad7599680. 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/QZN882441130.