thumb|Kjell Bækkelund in 1966 Kjell Bækkelund (6 May 1930 – 13 May 2004) was a Norwegian classical pianist. Biography Bækkelund was born in Oslo, Norway. He was the son of Martin Bækkelund (1903–66)
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 0xcaabd316b7b47abc739dbe4f6a6997a36c742c279dedcb5255f8ba310ace3265. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5cd09bb-1c4b-49f6-a14d-40a951dc0d43.json and https://artists.proofprofile.net/proofs/artist/f5cd09bb-1c4b-49f6-a14d-40a951dc0d43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kjell Bækkelund plays Brahms, Mozart & Schumann