Þórhallur Sigurðsson (born 20 January 1947), best known as Laddi, is an Icelandic comedian, actor, voice actor and entertainer known for comedy music and comedy acting. Laddi has dubbed many character
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 0x35cf99d991f7a38188607cb609d06e7a245b62cabeba6bac7c9d93676ede0adb. 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/54510f97-e545-409f-a217-dd8f22e7b9de.json and https://artists.proofprofile.net/proofs/artist/54510f97-e545-409f-a217-dd8f22e7b9de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).