Björn Haugan (5 September 1942 – 8 January 2009) was a Swedish born, Norwegian operatic lyric tenor.Norwegian Opera Singer Björn Haugan Dies (ILGCN) Background Björn Haugan was born in Söderhamn M
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 0x83c0d3b26717b8daaa8c7b6514fbc292054b5e6bc01fe83ca6f79748cf7dda9f. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaf19050-bcee-4161-9928-8412de2a2d36.json and https://artists.proofprofile.net/proofs/artist/eaf19050-bcee-4161-9928-8412de2a2d36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).