Emil of Lönneberga (from Swedish: Emil i Lönneberga) is a series of children's novels, written by Astrid Lindgren in 1963, 1966 and 1970 respectively, about the prankster Emil Svensson who lives on a
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 0x27d7bd26dbfd6a71f725e8eb45db7ec404909943f944492f0037f03d267bae23. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a526bb9d-5fd9-40f6-9b87-043459901e9c.json and https://artists.proofprofile.net/proofs/artist/a526bb9d-5fd9-40f6-9b87-043459901e9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).