La Patère Rose was a Canadian francophone electro-pop group formed in 2003 in Sherbrooke, Quebec. The band was composed of keyboardist Roboto (Thomas Hébert), drummer Kilojules (Julien Harbec), and si
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 0xce07e889572414be6befef1cce84859fd2377ca5773e7df1329f803c4ef8fea9. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44ef2c1a-2b03-4b95-8b39-ec9cab861d3b.json and https://artists.proofprofile.net/proofs/artist/44ef2c1a-2b03-4b95-8b39-ec9cab861d3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).