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 0x65b8600742050d304b4b77a04cfcadb1509689d995f5f2686f5c34cdfe1ab743. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfba8973-d480-46db-99a6-e6d64b7afe6f.json and https://artists.proofprofile.net/proofs/artist/cfba8973-d480-46db-99a6-e6d64b7afe6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Suite for Flute and Jazz Piano Trio: Baroque and Blue
Flûte Passion : Claude Bolling – Suite for Flute and Jazz Piano Trio
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 0x761836b90d9ec9fda316980816d4095ce457c86d7d85a279c3eee1763f6d83b6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CAQCO2400001.
Suite for Flute and Jazz Piano Trio: Sentimentale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38739b3c1dfbe59a3721879b8fca5d50ab2ce19d7bc837e8e2424e6d312265e. 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/CAQCO2400002.
Suite for Flute and Jazz Piano Trio: Javanaise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370ba8cc5e116dab2140c7445cfa1d4b32a6bc0f4cc5720d94909963eef2ad63. 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/CAQCO2400003.
Suite for Flute and Jazz Piano Trio: Fugace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525528145430be4efb1587ab7a1d6ee9d2fc00f70af1094e53215ddb38826408. 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/CAQCO2400004.
Suite for Flute and Jazz Piano Trio: Irlandaise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54914294b0ced45c8cf003f997e81c0a080f6b97b806795a7d00db710167bf79. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CAQCO2400005.
Suite for Flute and Jazz Piano Trio: Versatile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d63257d779370025213aff18bed214a2241177e72913b1e54f5b7ca136041c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CAQCO2400006.
Suite for Flute and Jazz Piano Trio: Véloce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0819a25921c4f34b60edea47c234927fe0febe776d9f59fea61bb0efe9a79e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CAQCO2400007.