Dame Imogen Cooper, (born 28 August 1949) is an English pianist. Biography Cooper was born in North London, daughter of the musicologist Martin du Pré Cooper and artist Mary Stewart. She grew up s
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 0xdae90129227eaee79996d9fcc432e1cc1d6958f1614592dd9b1019803b1a0796. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebfd9515-f8b2-4bc4-bfdc-09ec9f700085.json and https://artists.proofprofile.net/proofs/artist/ebfd9515-f8b2-4bc4-bfdc-09ec9f700085.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).