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 0x15449eea8f7e4a921b311bc3b491b5e5fcbfdd2adb36c61589150556d880c6ed. Chain 2 (Bitcoin): anchored in block 954141 (2026-06-17T21:14:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fc80279-c270-4d9f-9d6d-39f069ad4491.json and https://artists.proofprofile.net/proofs/artist/7fc80279-c270-4d9f-9d6d-39f069ad4491.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sólo Compás. Alegrías y Cantiñas II (Volumen 1)
Sólo Compás. Siguiriyas y Martinetes II (Volumen 1)
Solea Por Bulerias, Tempo 120 - Solo Compas
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 0xdcb5da9366a31ec2b6dd0655c671f47e0ccac44075b747604db90374cc9edc92. 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/ES5300819959.
Solea Por Bulerias, Tempo 132 - Solo Compas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebeee89f292de6f86af97c50b46a75aab06763009b193f2ecb5cb60a186196c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES5300819960.
Solea Por Bulerias, Tempo 152 - Solo Compas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f5dc952b422d98699653dd7449e08c2920e91b3d61d6897673588cc94a4101. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ES5300819962.
Solea Por Bulerias Con Guitarra, Tempo 144 - Solo Compas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8aebd7adea4a7920b18f22acdecc1c40dd33f6f04554311fea8e1e8f095449. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ES5300819966.