thumb Helgi Hjörvar (born 9 June 1967 in Reykjavík) is an Icelandic politician. He served as President of the Nordic Council in 2010. References External links Non auto-biography of Helgi Hjörvar o
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ad55ed41e1180c4f7e14d3cc002941d2a55021346ab1eaa6161e129b6b36c3. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0c6dee4-1ada-4909-bfc2-d7a1a26f6a5b.json and https://artists.proofprofile.net/proofs/artist/e0c6dee4-1ada-4909-bfc2-d7a1a26f6a5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).