Kerrie Agnes Biddell (8 February 19475 September 2014) was an Australian jazz and session singer, as well as a vocal teacher. Life and career Born in Kings Cross, New South Wales, the only child of I
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 0x20f7889fe9dc2ece4e6dc82ef73c8f7ad55f9837c551028919dfa00dba50b558. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccfa0aa0-ab36-473a-bd46-f32982580a91.json and https://artists.proofprofile.net/proofs/artist/ccfa0aa0-ab36-473a-bd46-f32982580a91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).