Yvon Repérant is a French harpsichordist and organist, singing leader and musicologist.Le jeune choeur de Paris - bio (French) Yvon Repérant studied at the Schola Cantorum Basiliensis and the Conser
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 0x10d4674089f047c358e0d5ee65df99da097646f6a58db042a27668a2771b408a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55f25475-27a3-46ba-9810-60ad3134bda6.json and https://artists.proofprofile.net/proofs/artist/55f25475-27a3-46ba-9810-60ad3134bda6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hercules, HWV 60 / Act 1: Recit: "Princess! be comforted, and hope the best"
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 0x12502395efd5d51e0084dd4382622b050fb2e6be3f9b02f924e780a969d0b0c3. 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/DEN960032007.
Hercules, HWV 60 / Act 1: Recit.: "He said, the sacred fury left his breast"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4550be9da4c22c3c758e3e3d6c5071f881d41e782886901bb5ddf3f86d4417e0. 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/DEN960032009.