Camille Poul (born 1982) is a French operatic soprano. Education Poul is a graduate of the Conservatoire de Région of Paris for the Baroque repertoire and of the Conservatoire de Région of Caen. Sh
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 0xf2ed0b4c43bc72ab0282133e2f28fb5b799d2095536dce1f2236b6ee77f2471c. 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/5dbe8220-9ce4-434f-9787-0d75908b6b09.json and https://artists.proofprofile.net/proofs/artist/5dbe8220-9ce4-434f-9787-0d75908b6b09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boismortier: Don Quichotte chez la Duchesse