Jan Dukes De Grey
type: MusicGroup
genre: baroque pop
genre: folk rock
genre: progressive rock
description: Jan Dukes de Grey was a short-lived English psychedelic/progressive folk and progressive rock band that was primarily active in the early 1970s. Despite a relatively limited output and a lukewarm cont
popularity: 5
followers: 1752
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSTimestamp
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9582d56bcd709f33c7e162539e31c1411d9c2c38fbaec2cf70cc5a96abf5df88. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfbb8315-7976-4d0f-b6d8-2b1988d603c8.json and https://artists.proofprofile.net/proofs/artist/bfbb8315-7976-4d0f-b6d8-2b1988d603c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
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album: Sorcerers
  type: MusicAlbum
  date published: 1970
  track: Dragons
    type: MusicRecording
    duration: PT0M55S
    duration ms: 55106
    explicit: false
    by artist: Jan Dukes De Grey
    in album: Sorcerers
      type: MusicAlbum
      date published: 1970
    genre: baroque pop
    genre: folk rock
    genre: progressive rock
    isrc code: GBBBA6975810
    additional property: CopyrightID
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T10:09:37Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3cc5fb61e7acf6f4bb16ce476c0e050a1645e4f8c09324abdc5856d71e413a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:09:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA6975810.
      date published: 2026-07-20T10:09:37Z
    audio: Dragons
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 74.661
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.342
      additional property: Energy
        type: PropertyValue
        value: 0.163
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.665
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.946
      additional property: Liveness
        type: PropertyValue
        value: 0.098
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.456
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.932
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sorcerers
  type: MusicAlbum
  date published: 2007
album: Strange Terrain
  type: MusicAlbum
  date published: 2010
album: Strange Terrain
  type: MusicAlbum
  date published: 2010