Sverre Kjelsberg (18 October 1946 – 18 June 2016) was a Norwegian singer, guitarist, bassist, composer, and lyricist. He was a member of the band The Pussycats from 1964. He and Mattis Hætta represen
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 0x69b67494394479464f0f7757e2fcfda1622b4414db7688f7180b07058927ccea. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1ed94db-0519-439e-a742-5ca13e468d3f.json and https://artists.proofprofile.net/proofs/artist/e1ed94db-0519-439e-a742-5ca13e468d3f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).