Þórarinn Hugleikur Dagsson (), nicknamed Hulli, born 5 October 1977 is an Icelandic artist. He received a B.A. degree from the Iceland Academy of the Arts in 2002.Hugleikur Dagsson from HarperCollins
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 0x6ae0d369bd0570e94e938378f1d1a52aafce6654e9598401c61cd4871ed1150b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c981e72-2cf9-4147-a56e-64250f7e7c87.json and https://artists.proofprofile.net/proofs/artist/3c981e72-2cf9-4147-a56e-64250f7e7c87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).