Kjerstin is the given name of: Kjerstin Andersen (born 1958), Norwegian former team handball goalkeeper Kjerstin Askholt (born 1962), Norwegian civil servant, former governor of Svalbar Kjerstin B
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 0x974e23d70c8428a231e981043c97b919c60d85b122679943c5653d6439209069. 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/95fbbdce-f2bb-40df-b807-6581f9be5302.json and https://artists.proofprofile.net/proofs/artist/95fbbdce-f2bb-40df-b807-6581f9be5302.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).