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 0xbaf509f6bfbbec17146d3bf45bd235e9c4e009546b9f0b921a15734690d2ab9c. 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/21e87106-31c7-4dc3-8e9b-7cbdc819222f.json and https://artists.proofprofile.net/proofs/artist/21e87106-31c7-4dc3-8e9b-7cbdc819222f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonidos del Arpa Llanera, Vol. 2 (Instrumental)
Sonidos del Arpa Llanera, Vol. 1 (Instrumental)
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 0x784eddb1dd713a7acad9d5e4acf0a84a827337059602d4ce145d39f73510da41. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:38:13Z), 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/QMDA71592826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235f398180e975264181e334cbe21d5f3b45c0d9b0a3c1fa159a6f12228163e7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMDA71592831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921e6186f04b1da5448762947cfc8954d68946267428d753a75e6c60cb16c390. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QMDA71592822.
Muchacha de Ojazos Negros - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd004cf49c43b9467f8e1a26ab5fbb59b941032cdbf3282a227ae10c7e3466c81. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:04Z), 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/QMDA71592823.
Solitos Con las Estrellas - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141222d61f5d9ed3540a5c0f160abd3d2acdcd1ecca7fdcaf28e5cf924639507. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMDA71592824.