Sophie-Véronique Colette Claude Cauchefer-Choplin (née Cauchefer, born 28 December 1959) is a French organist who has served as co-titular organist of the Church of Saint-Sulpice in Paris since 2023.O
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 0xedb2979d2f7a9be30cdcb9d01f488f52c0647964e86ff53a760db1fa3351b105. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dca0bc02-b41a-4384-aff3-9909f3cffa4d.json and https://artists.proofprofile.net/proofs/artist/dca0bc02-b41a-4384-aff3-9909f3cffa4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sophie-Véronique Cauchefer-Choplin au grand-orgue de Saint-Sulpice
Introduction and Passacaglia in D Minor: Introduction
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 0x5519f7060f2c7dace3f4f5c1100d0b6a2e2390597d3b9ae62aa10fcfbe8c9886. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/FRZ099200782.
Sophie-Véronique Cauchefer-Choplin: Orgue Saint-Sulpice, Paris
Sophie-Véronique Choplin aux Grandes Orgues de Saint-Sulpice, Paris