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 0xce377dec3d622efcd6f53e01da25eb1af92e46de70234d822577cc2a393c4df1. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ec1ae99-323b-46f0-8631-323601380966.json and https://artists.proofprofile.net/proofs/artist/4ec1ae99-323b-46f0-8631-323601380966.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Misa Criolla: II. Gloria (Version for Solo Violin, Vocal Quartet, Percussion, Charango, Guitar and String Orchestra)
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 0x2164444ce0fd20c3a799e85653ec4a21819e69a9a673aa715fcb55bc14486adc. 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/DEN962031002.
Misa Criolla: V. Agnus Dei (Version for Solo Violin, Vocal Quartet, Percussion and String Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0646647736cae34269388894f3afcdfb5de5864f3de5a6f1a92f201b19c6f01e. 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/DEN962031005.
Misa Criolla: I. Kyrie (Version for Solo Violin, Vocal Quartet, Percussion and String Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eecd4e119cc1ec2180a3a3af0572cfebb82202725f7cf7bbc2aa465c9ca3f8. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEN962031001.
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
Misa Criolla: III. Credo (Version for Solo Violin, Vocal Quartet, Percussion, Charango, Guitar and String Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481dc88cc57768afe909d94f30d0d4c547d7ffb74e19b3fad71ce0750701c197. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEN962031003.
Misa Criolla: IV. Sanctus (Version for Solo Violin, Vocal Quartet, Percussion, Charango, Guitar and String Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ca22f3d580be14ad6446d901819725e32646e4ece8207b0a6ba11fccd8f415. 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/DEN962031004.