Chess Theory
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description: thumb|220px|right|Chess initial position The game of chess is commonly divided into three phases: the opening, middlegame, and endgame.John Watson, Secrets of Modern Chess Strategy: Advances Since Ni
popularity: 21
followers: 72
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additional property: OTSVerifyInstructions
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  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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album: The End (The Beginning)
  type: MusicAlbum
  date published: 2022-06-09
album: Broken Mirror
  type: MusicAlbum
  date published: 2022-07-28