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 0x41bf0430efb629e137f41e91cc1aede22c7a4b1beae452a3236f76584b77bd3b. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2785c35-e088-48d8-b8c7-c399eff795bc.json and https://artists.proofprofile.net/proofs/artist/a2785c35-e088-48d8-b8c7-c399eff795bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Télémaque & Calypso, Prologue: Ouverture (I)
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 0x95fda20785437291d6c0b634298e517fa060ed70c41d4275169b4cea8456b38b. 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/FXR522412801.
Télémaque & Calypso, Prologue Scene 1: Descendez, régnez sur la terre (Les vertus, les muses et les arts)
Les Chantres du Centre de Musique Baroque de Versailles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb713d99e8323f8ef4a5775b49d07c138f2ddd6e5984b52a4e43f194be647383. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FXR522412805.
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
Stabat Mater Pour Contre-ténor Et Orchestre en Fa Mineur, RV 621: Stabat Mater dolorosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd65ea35c2df2076850a055c096d97e40acac651be9030db6f194578ae2308a6. 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/FRU621427703.
Stabat Mater Pour Contre-ténor Et Orchestre en Fa Mineur, RV 621: Eja mater
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725340f6872941639d1a18062b5fb39d65343040bb6d93be5488f9f991635e7a. 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/FRU621427704.
Cantate "Ich Hatte Viel Bekümmernis" BWV 21: Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86f85ba31e87ca2ffef5c1d592b9cd7fe46a08b6cc3f25c37de40b9da768c92. 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/FRU621427705.
Sonata seconda en Sol Mineur, TWV 43:g1: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f2bf2af19f56e66c78058b4da81bc24702dd50d7cf0a0244888167a9387476. 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/FRU621427706.
Concerto pour clavecin en Fa mineur, BWV. 1056: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386c4fd1794405bd6e1846678a532a07f9420c1bc517abfe8ce72245079a56ce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRU621427708.
Leçons de ténèbres, Troisième Leçon à deux voix: VI. Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc69f61f795ba64d5fdb29595196c14dad7f64d531804990e30615ec5c48b8c4. 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/FRU621835817.
Leçons de ténèbres, Troisième Leçon à deux voix: I. Jod
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c793d726b5a9598c112c517b1aecea271021a8578fc3fa3c477cc4f9db72fc. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FRU621835812.
Les Nations, premier ordre "La Françoise": I. Sonade (Gravement - Gayement - Rondement - Gayement - Gravement - Vivement - ir, gracieusement - Gayement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f8eddbd249d157002f45f27fb52f946fd7a7efd424ce34466ba126e5bde85f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZDG1200830.
Couperin & Colin de Blamont: Concert chez la Reine
J.C. Bach: Quartet Op. 8 No. 2: II. Rondeau. Allegro Assai
La Folle Journée 2019: Carnets de voyage
Destouches: Télémaque & Calypso, Act I Scene 6: Deuxième air des démons et des magiciennes