Elizabeth Bainbridge (28 March 1930 – 8 December 2024) was an English and British opera singer. Her career in singing spanned several decades. She achieved most of her successes while a member of the
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 0x1cbbe40bb1ba8a8bfe612d93046f9ee004f6066bfb8c613d1301a3fda4e9b0a1. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c32122c-2d24-409a-a3c7-a09bd6d28059.json and https://artists.proofprofile.net/proofs/artist/7c32122c-2d24-409a-a3c7-a09bd6d28059.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).