David Fenech (born 19 July 1969) is a French composer, guitarist and singer. His style has been described as 'a kind of punk musique concrète'. He uses the studio as an instrument, using a large panel
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 0xaec1276c320a2c9f0fc0bd98f4924e247541225b0192d5593f7c6a7e00b269c8. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2247534-ea6b-4440-bd18-980f0b9a6adc.json and https://artists.proofprofile.net/proofs/artist/e2247534-ea6b-4440-bd18-980f0b9a6adc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).