Jóhannes Haukur Jóhannesson
type: MusicGroup
description: Jóhannes Haukur Jóhannesson (born 26 February 1980) is an Icelandic actor known for his roles in the TV series Game of Thrones (2016), Vikings: Valhalla (2022) and Succession (2023), and in the films
popularity: 2
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77887038d2ff2d696d286820109319fce6539b00334234d9680c271d7009dfe4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953991
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953991
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2edeba90-63a2-4de3-a373-38478761dfde.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2edeba90-63a2-4de3-a373-38478761dfde.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2edeba90-63a2-4de3-a373-38478761dfde
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T18:47:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x77887038d2ff2d696d286820109319fce6539b00334234d9680c271d7009dfe4","name":"Jóhannes Haukur Jóhannesson","registered_at":"2026-06-16T05:52:49Z","symbol":"NIM0957652","token_address":"0xfe9793cb4a83e7f086b2f5d21d1c60bd89a42407","type":"artist","uuid":"2edeba90-63a2-4de3-a373-38478761dfde"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77887038d2ff2d696d286820109319fce6539b00334234d9680c271d7009dfe4. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2edeba90-63a2-4de3-a373-38478761dfde.json and https://artists.proofprofile.net/proofs/artist/2edeba90-63a2-4de3-a373-38478761dfde.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x77887038d2ff2d696d286820109319fce6539b00334234d9680c271d7009dfe4","name":"Jóhannes Haukur Jóhannesson","registered_at":"2026-06-16T05:52:49Z","symbol":"NIM0957652","token_address":"0xfe9793cb4a83e7f086b2f5d21d1c60bd89a42407","type":"artist","uuid":"2edeba90-63a2-4de3-a373-38478761dfde"}