Häxmästaren
type: MusicGroup
genre: doom metal
genre: stoner rock
description: 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
popularity: 2
followers: 453
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
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  description: 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).
  date published: 2026-06-16T22:46:20Z
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album: Haexprocess
  type: MusicAlbum
  date published: 2018-03-02
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  date published: 2018-06-12
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