Unhoped
type: MusicGroup
genre: groove metal
genre: speed metal
genre: thrash metal
popularity: 2
followers: 729
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa812aaab5f2897faf7f8364c023944fc013423fbf07fa68e661adec43f95c92e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954124
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b5c67d6-3942-43bf-ab89-8d722cde9850.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b5c67d6-3942-43bf-ab89-8d722cde9850.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7b5c67d6-3942-43bf-ab89-8d722cde9850
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T18:22:18Z
additional property: OTSCanonicalRecord
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 0xa812aaab5f2897faf7f8364c023944fc013423fbf07fa68e661adec43f95c92e. Chain 2 (Bitcoin): anchored in block 954124 (2026-06-17T18:22:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b5c67d6-3942-43bf-ab89-8d722cde9850.json and https://artists.proofprofile.net/proofs/artist/7b5c67d6-3942-43bf-ab89-8d722cde9850.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T18:22:18Z
album: Die Harder
  type: MusicAlbum
  date published: 2011-07-08
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  type: MusicAlbum
  date published: 2013-05-24
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  type: MusicAlbum
  date published: 2013-05-24
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  type: MusicAlbum
  date published: 2016
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  date published: 2016-01-14
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  type: MusicAlbum
  date published: 2020-03-20
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  type: MusicAlbum
  date published: 2020-03-20
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  type: MusicAlbum
  date published: 2024-06-28
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  type: MusicAlbum
  date published: 2024-08-08
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  type: MusicAlbum
  date published: 2024-10-30