right|thumb|Jory Vinikour Jory Vinikour (born May 12, 1963 in Chicago) is an American born harpsichordist. He has been living in Paris since 1990, where he studied on a scholarship from the Fulbright
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 0x2a13e9faa228cfd8ddfd726add1823454bf99bed63b65823216634ce4734f11f. 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/c1777ecc-dcaf-4b8d-8fdf-8cef371cbfe7.json and https://artists.proofprofile.net/proofs/artist/c1777ecc-dcaf-4b8d-8fdf-8cef371cbfe7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Harpsichord Recital: Vinikour, Jory - Handel, G.F. / Bach, J.S. / Rameau, J.P. / Scarlatti, D. / Couperin, L. / Couperin, F.
Pieces de clavecin: Suite in D Minor - major: VIII. Les cyclopes
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 0x193ccbbc1dcc6538d2bfab813d6a6b68b312a372249d14027c8a37680921f591. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0835417 — a six-check JSON result.
Toccatas: Modern American Music for Harpsichord
Flute Sonata in E-Flat Major, BWV 1031: II. Siciliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc33a1913e5ab164362e0ca8cfe472c1e84acd7ecfea5613fa4a479c74229283. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0940208 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: N. 12. Arietta: “Voi che sapete che cosa è amor”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40ff8a2b1031fa8143ff8025a1f0837b9dcd079d710e93d71b2b189fb3f728b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961531225 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013a3e041d8da4f44e10e8120b956d4a92f22ee0f7802c20ec80c0d4b00ba8da. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961831124 — a six-check JSON result.
Flute Sonata in B Minor, BWV 1030: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728abfa03642c4dcf97ce823ef57e22079f08f8a068fcd0fbc24ace80821fa65. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0940201 — a six-check JSON result.
Flute Sonata in G Minor, BWV 1020 (attrib. to C.P.E. Bach, H. 542.5): I. [Allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fb4761b6220507b455635dc4116857acbf772a622cb6b9ef58fea723c736a4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0940204 — a six-check JSON result.
Flute Sonata in E-Flat Major, BWV 1031: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f08305472b982a26daa98e78070543f833bd16600101a92770eb85ef36aa7a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0940209 — a six-check JSON result.