Paul Émile Ladmirault (8 December 1877 – 30 October 1944) was a French composer and music critic whose music expressed his devotion to Brittany. Claude Debussy wrote that his work possessed a "fine dr
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 0xb1d1d7dd62ab45aed37bf17ccab0dba2fe8302e6be1f44b3674e0ca59ec177d2. 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/67283b16-e5e7-4f6e-b5fe-e1af933da5e1.json and https://artists.proofprofile.net/proofs/artist/67283b16-e5e7-4f6e-b5fe-e1af933da5e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ladmirault: Chansons Ecossaises & Chœurs profanes
10 Chansons ecossaises: No. 9. Le Batelier
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 0x963ec2c4ea3c8fe13a3a4dd535acf39cf327bb45fbdbbf26551bbfae5ef0653b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:05Z), 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/FRX740708409.