Irvine Arditti (born 8 February 1953) is a British violinist, as well as the leader and founder of the Arditti Quartet. Biography Arditti attended the Central Foundation Boys' School in London before
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 0x6976972d7de5206576208a4e62665fba4ce4c19c4fb67fb97ceaba7336d712b4. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/979bb145-4101-46eb-9b77-972472a7e575.json and https://artists.proofprofile.net/proofs/artist/979bb145-4101-46eb-9b77-972472a7e575.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).