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 0x9f3bf992a1a229433b7b99c8dcf04f84e4f6f9cd1b26df78e2a8a5b47d4dd521. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/527ad9a7-7533-4dc4-a13f-3447c754f091.json and https://artists.proofprofile.net/proofs/artist/527ad9a7-7533-4dc4-a13f-3447c754f091.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I. Profecias y Evocaciones Antiguas (From Medea, Act II): Evocation 2: Terminus omnis motus et urbes
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 0x4a2d86f9f6a63310cb7283f42eb8461d17bb8519064a9e0bec0c06dc84040a62. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH4210600074.
I. Profecias y Evocaciones Antiguas (From Medea, Act II): Evocation 3: Venient annis saecula seris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc392b352c376158d1a86f0e20cb570eb711f1798967baa44f2c6289198ae320e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH4210600076.
I. Profecias y Evocaciones Antiguas, 1408 Reinado del Emir Nazarí Yusuf III: Himno sufi (improvisacion instrumental) (Hymne soufi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ffdd59f4723a4a84bd68a469898c3486570b067cb81c0674b8af909323f81a. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/CH4210600080.
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
I. Profecias y Evocaciones Antiguas, 1408 Reinado del Emir Nazarí Yusuf III: Instrumental Arabo-andaluz (Mowachah Billadi askara min aadbi Llama) [Improvisation Arabo andalou]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7081eaae0b1fdd4565944a84df03380a842aa9857aa20a7de2f946bc4a9e0c23. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CH4210600082.