John Karayiannis
type: MusicGroup
popularity: 14
followers: 815
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae465212765dd3d46aee8b7f43b54298094c65f9932944a9cb9c7a697eed51e6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953762
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953762
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8873c03-54ba-47dc-b45d-984222661f5f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8873c03-54ba-47dc-b45d-984222661f5f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b8873c03-54ba-47dc-b45d-984222661f5f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T08:21:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xae465212765dd3d46aee8b7f43b54298094c65f9932944a9cb9c7a697eed51e6","name":"John Karayiannis","registered_at":"2026-06-14T23:55:26Z","symbol":"NIM0616881","token_address":"0xc98051a90a3fe972e8543b7c1ce215a08a4cafae","type":"artist","uuid":"b8873c03-54ba-47dc-b45d-984222661f5f"}
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 0xae465212765dd3d46aee8b7f43b54298094c65f9932944a9cb9c7a697eed51e6. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8873c03-54ba-47dc-b45d-984222661f5f.json and https://artists.proofprofile.net/proofs/artist/b8873c03-54ba-47dc-b45d-984222661f5f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T08:21:23Z
  text: {"copyright_id":"0xae465212765dd3d46aee8b7f43b54298094c65f9932944a9cb9c7a697eed51e6","name":"John Karayiannis","registered_at":"2026-06-14T23:55:26Z","symbol":"NIM0616881","token_address":"0xc98051a90a3fe972e8543b7c1ce215a08a4cafae","type":"artist","uuid":"b8873c03-54ba-47dc-b45d-984222661f5f"}
album: One Thing I Should Have Done
  type: MusicAlbum
  date published: 2015-03-20
  track: One Thing I Should Have Done - Promo Mix
    type: MusicRecording
    duration: PT3M0S
    duration ms: 180531
    explicit: false
    by artist: John Karayiannis
    in album: One Thing I Should Have Done
      type: MusicAlbum
      date published: 2015-03-20
    isrc code: GBKPL1511905
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T22:47:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x891ad4450db3dcf8fafbb4f97392ae93913702ed6a5a2301ad3f72d727e86949
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957771
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957771
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKPL1511905
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T23:27:28Z
    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 0x891ad4450db3dcf8fafbb4f97392ae93913702ed6a5a2301ad3f72d727e86949. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBKPL1511905.
      date published: 2026-07-12T23:27:28Z
    audio: One Thing I Should Have Done - Promo Mix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 180.362
      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: 0.334
      additional property: Energy
        type: PropertyValue
        value: 0.382
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.546
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.37
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.457
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.067
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: One Thing I Should Have Done
  type: MusicAlbum
  date published: 2015-03-20
album: One Thing I Should Have Done (Eurovision 2015 - Cyprus)
  type: MusicAlbum
  date published: 2015-03-26
album: One Thing I Sould Have Done
  type: MusicAlbum
  date published: 2015-03-31
album: One Thing I Should Have Done (Euroclub Mix)
  type: MusicAlbum
  date published: 2015-04-01
album: One Thing I Should Have Done (Euroclub Mix)
  type: MusicAlbum
  date published: 2015-04-01
album: Diggiloo Diggiley
  type: MusicAlbum
  date published: 2015-05-05
album: Diggiloo Diggiley
  type: MusicAlbum
  date published: 2015-05-05