Halldór Laxness
type: MusicGroup
description: Halldór Kiljan Laxness (; born Halldór Guðjónsson; 23 April 1902 – 8 February 1998) was an Icelandic writer and winner of the 1955 Nobel Prize in Literature. He wrote novels, poetry, newspaper article
popularity: 2
followers: 48
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa905af08fa45d5fdda08a4e98e98ab7c90856d167e2e2634a097e5f10cd0a732
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953877
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953877
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/08bef307-fa6f-4255-a179-4c6882d1d22b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/08bef307-fa6f-4255-a179-4c6882d1d22b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/08bef307-fa6f-4255-a179-4c6882d1d22b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:39:16Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa905af08fa45d5fdda08a4e98e98ab7c90856d167e2e2634a097e5f10cd0a732","name":"Halldór Laxness","registered_at":"2026-06-15T16:32:09Z","symbol":"NIM0766526","token_address":"0x158ea4bb320b8cf60affaa8653c92512c1493468","type":"artist","uuid":"08bef307-fa6f-4255-a179-4c6882d1d22b"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa905af08fa45d5fdda08a4e98e98ab7c90856d167e2e2634a097e5f10cd0a732. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08bef307-fa6f-4255-a179-4c6882d1d22b.json and https://artists.proofprofile.net/proofs/artist/08bef307-fa6f-4255-a179-4c6882d1d22b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0xa905af08fa45d5fdda08a4e98e98ab7c90856d167e2e2634a097e5f10cd0a732","name":"Halldór Laxness","registered_at":"2026-06-15T16:32:09Z","symbol":"NIM0766526","token_address":"0x158ea4bb320b8cf60affaa8653c92512c1493468","type":"artist","uuid":"08bef307-fa6f-4255-a179-4c6882d1d22b"}
album: Am Gletscher
  type: MusicAlbum
  date published: 2008