Häxmästaren in Swedish and Heksemesteren in Norwegian (The Warlock in English) is a series of books by Norwegian-Swedish author Margit Sandemo. This series is Sandemo's second, following the extremely
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 0xd149f6541fefbbc8c9dde818bc83c387a4036de7b67a3048b8f9418b6bad6757. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a08dc85-8fa2-4ae6-b2fb-2e7f6a4436ad.json and https://artists.proofprofile.net/proofs/artist/2a08dc85-8fa2-4ae6-b2fb-2e7f6a4436ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).