Greybeard
type: MusicGroup
genre: doom metal
genre: melodic death metal
description: Greybeard is a science fiction novel by British author Brian Aldiss, published in 1964. Plot summary Set decades after the Earth's population has been sterilised as a result of nuclear bomb tests con
popularity: 3
followers: 7867
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x11115f65b1679234d4fd2bb569b45f941dd6c21385b7c4988a32dc66d0556880
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b88f7b4a-ec29-43d9-b03f-4daf02acdb3d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b88f7b4a-ec29-43d9-b03f-4daf02acdb3d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b88f7b4a-ec29-43d9-b03f-4daf02acdb3d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
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 0x11115f65b1679234d4fd2bb569b45f941dd6c21385b7c4988a32dc66d0556880. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b88f7b4a-ec29-43d9-b03f-4daf02acdb3d.json and https://artists.proofprofile.net/proofs/artist/b88f7b4a-ec29-43d9-b03f-4daf02acdb3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:15:05Z
album: Session 1 - Gaze Into the Empty
  type: MusicAlbum
  date published: 2016-10-04
album: Session 2 - Built to Destroy
  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2020-07-01
album: Oracle
  type: MusicAlbum
  date published: 2020-11-06
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  type: MusicAlbum
  date published: 2020-11-06
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  type: MusicAlbum
  date published: 2022-05-14
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2023-05-23