Kristian Olof Erik Gidlund (21 September 1983 – 17 September 2013) was a Swedish musician and author. He played drums in the rock band Sugarplum Fairy.DT.se: Kristian Gidlund har avlidit He hosted So
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 0x1ac5d07d7db193a6cfa08adf8ba43d0377b43a4ce8a5063bbb19d3205b380c7e. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af2a8ee7-c9ff-4f65-b926-b28132f06aa1.json and https://artists.proofprofile.net/proofs/artist/af2a8ee7-c9ff-4f65-b926-b28132f06aa1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).