André Theophile Joseph Dran (15 June 1924, in Metz – 12 September 2014, in Pouancé) was a French tenor,L'Art Lyrique website, accessed 25 September 2015. whose career was mainly restricted to France a
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 0x46d71895070f03f8da950792d6a0ac26b75b4329d3e75e47f3fb491e16be503b. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9997f8a2-640a-40a0-b155-18e34285d5b5.json and https://artists.proofprofile.net/proofs/artist/9997f8a2-640a-40a0-b155-18e34285d5b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Offenbach: La Grande-Duchesse de Gerolstein
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 0xba844513450cf24a4e549a849a1fd1a3075635c28294d91f99f875532e35f557. 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/NLA505600136.
Offenbach: La Belle Hélène - Chabrier: L'Étoile
LEHAR: Le comte de Luxembourg / Frederique / Giuditta (excerpts) (ORTF, Sibert) (1966-1980)
Viens, viens (Orpheus in the Underworld)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8be59c232eff38ffcfe20ea3c6d20be36e7e20f647092e2ab2191fcc22d4f36. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ATP130202111.
Altesse? (La grande Duchesse de Gerolstein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8322ec7b3c61fb3ee1a1ae488e97c9283894bf86a92fb6e9af6e7d53fcd0411b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ATP130459115.
Offenbach: Orphée aux Enfers and 12 Arias
Offenbach: Orpheus in the Underground - La Belle Helene
Janine Linda / Orchestre Philharmonique de Paris / René Leibowitz play: Jacques Offenbach: La Belle Hélène - Opéra-bouffe en 3 actes
Offenbach: Orphée aux enfers, Highlights (1874 Version, Mono Version)
Offenbach: The Grand Duchess (Highlights)
Offenbach - La Belle Hélène, Vol. 1 (1952)
Offenbach: La Grande-Duchesse de Gérolstein
Offenbach: La Belle Hélène, Vol. 2 (1952)