1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x87c9b74a5803d7b899af669d6d62ce8531f8787dbee42fa281ecb0c478a4dd7a. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb852e80-f5ae-4cd0-b24b-0b543626e545.json and https://artists.proofprofile.net/proofs/artist/fb852e80-f5ae-4cd0-b24b-0b543626e545.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Maîtrise de Reims chante sa cathédrale
Vesperae solennes de confessore, K. 339: Laudate Dominum
Sur la naissance de notre Seigneur Jésus Christ, H. 482 "Pastorale": Heureux bergers
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 → block OTSBitcoinBlock must exist at that height 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 0xc2163e8e8639dd2cdf9d83b48e5f19f41665d524c4498db617549f862ec81dec. 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/FRX211601003.
Magnificat de la paix (Pour Notre Dame de Reims)
Requiem, Op. 48: I. Introit - Kyrie - Organ, Choir and Soloists Version
Requiem, Op. 48: II. Offertoire - Organ, Choir and Soloists Version
Requiem, Op. 48: III. Sanctus - Organ, Choir and Soloists Version
Requiem, Op. 48: IV. Pie Jesu - Organ, Choir and Soloists Version
Requiem, Op. 48: V. Agnus Dei - Organ, Choir and Soloists Version
Requiem, Op. 48: VI. Libera me - Organ, Choir and Soloists Version
Requiem, Op. 48: VII. In paradisum - Organ, Choir and Soloists Version
Deus in adjutorium - Domine ad adiuvandum
Monteverdi: Il Vespro della Beata Vergine
Hodie virgo Maria - I. Magnificat anima mea