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 0xa74a7d718978fcd443a0ba09587ee53dbc6cd9e6c27704d9442122f449e8c90c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0cd059f-4d18-49da-90b9-58768c745cf6.json and https://artists.proofprofile.net/proofs/artist/e0cd059f-4d18-49da-90b9-58768c745cf6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Offenbach: La vie parisienne, Extracts (1873 Version, Mono Version)
15 Duos d'opérettes célèbres (Mono Version)
Les trois valses - Aimer, boire et chanter - La Magie de l'Opérette en 38 volumes - Vol. 33/38
Anthologie André Messager (1853-1929) [24 succès]
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 0x09607bc6be03a3ee478cf300e4970f2b965e0c39739b22649f9090a9f30bf561. 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/FR6V80785022.
Lehár: La veuve joyeuse, Extracts & Le comte de Luxembourg, Extracts (Stereo Version)
Wal-Berg: Casanova, extraits (Mono Version)
Au Soleil du Mexique, Yvain & Willemetz , Orchestre lyrique et Choeurs de la RTF - Jules Gressier (dir)
Lehár: La veuve joyeuse & Le comte de Luxembourg, versions françaises abrégées (Stereo Version)
Galop infernal (French Cancan) - Orphée aux enfers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c5bf36e89c3669c11af68e071150fdfd6ed2c0ce322fa5d6c4ec64133249bc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80878203.
La vie parisienne : 'Rondo du Brésilien' - La vie Parisienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4047e3bccdf6ebca9bf7435d26f42d6abbb0ab448fbe9ddc9031429452773694. 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/FR6V80878209.
Aimer, boire et chanter (Collection "Opérette")
Le Petit Duc - La Magie de l'Opérette en 38 volumes - Vol. 20/38
Lecocq: Le petit duc (Short Version, Mono Version)
Offenbach: La vie parisienne, version abrégée (Mono Version)
Offenbach: La belle Hélène, enregistrement abrégé (Mono Version)
La belle Hélène, Act I: Marche. "Voici les rois de la Grèce !" - Couplets des rois. "Ces rois remplis de vaillance" (Chœur, Ajax I, Ajax II, Calchas, Oreste, Achille, Ménélas, Agamemnon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe991d6db9ce52e0e809d551ac15a512292328f75ea0bb327cd315dc6ba77f30f. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS181521957.
Hahn: Ciboulette, extraits (Mono Version)
La vie parisienne, Offenbach, Orchestre radio lyrique et Choeurs de la RTF - J. Gressier (dir)
Act I: N° 5 Final du Premier acte: « Je suis brésilien et j’ai de l’or »
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e5408231c962984264bb17cbe501161e84f11779e8887a8b110d705589b600. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FRT155414015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd164752edf144c7bf02a49e66911d2b391264c811f3b0b9e614ffd331a2450. 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/FRX192807206.
Orphée aux enfers: Chœur du sommeil (Chœur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66cf521fdbc71eebdc854c32a43e44b8d2c1bd49aba3ffa3189b0847ffead84. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FRS181244414.
Lopez: La belle de Cadix, Extracts (Mono Version)
Trésors de la poésie lyrique française: Grands romantiques (Mono version)
Noël essentiel Vol. 6 (Anthologie des plus belles chansons de Noël)