Jean Giraudeau (1 July 19167 February 1995) was a French tenor,Obituary: Jean Giraudeau. Opera, June 1995, Vol.46, No.6, p671. and later theatre director, particularly associated with the Opéra-Comiqu
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 0x053f7aef764d90c4190d0eb08975741d538eb2d175b49dce111fdf6035e6910d. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba8f4262-9d8f-452a-b56f-79a9a7352c2f.json and https://artists.proofprofile.net/proofs/artist/ba8f4262-9d8f-452a-b56f-79a9a7352c2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ravel: L'heure espagnole, M. 52: "C'est fait ! L'horloge est à sa place" (Ramiro, Concepción, Gonzalve)
Orchestre Du Theatre National De L'Opera Comique
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 0xcad488c02e1bc05a802fed1535d0d2e6ac586a419dbcdac89085d3225196b91b. 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/FRZ115206850.
Ravel: L'heure espagnole, M. 52: "Voilà ! Et maintenant à l'autre !" (Ramiro, Íñigo, Concepción)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1441b8aa98aea3ea4fc87d3f7e3160d412b9033fd604b2590e212b894b68087. 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/FRZ115206854.
Ravel: L'heure espagnole, M. 52: "Maintenant, pas de temps à perdre !" (Concepción, Gonzalve)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0901d74c860ac4606eb87f496d2ab48904331cf928ef4277c8b1b92d59f21aad. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRZ115206851.
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