Leonidas Klados
type: MusicGroup
genre: traditional music
popularity: 6
followers: 1426
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x338b3c5a6ce26cbca4c81c473f1ab330552cf69ed045fc69cfc52d239dadc369
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a58b308-6854-45e4-a4e6-6f64a2a8f836.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a58b308-6854-45e4-a4e6-6f64a2a8f836.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8a58b308-6854-45e4-a4e6-6f64a2a8f836
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x338b3c5a6ce26cbca4c81c473f1ab330552cf69ed045fc69cfc52d239dadc369","name":"Leonidas Klados","registered_at":"2026-06-17T13:53:15Z","symbol":"NIM1415728","token_address":"0x6c79a48966d16b42cdecbebe707402fc6207fcea","type":"artist","uuid":"8a58b308-6854-45e4-a4e6-6f64a2a8f836"}
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 0x338b3c5a6ce26cbca4c81c473f1ab330552cf69ed045fc69cfc52d239dadc369. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a58b308-6854-45e4-a4e6-6f64a2a8f836.json and https://artists.proofprofile.net/proofs/artist/8a58b308-6854-45e4-a4e6-6f64a2a8f836.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x338b3c5a6ce26cbca4c81c473f1ab330552cf69ed045fc69cfc52d239dadc369","name":"Leonidas Klados","registered_at":"2026-06-17T13:53:15Z","symbol":"NIM1415728","token_address":"0x6c79a48966d16b42cdecbebe707402fc6207fcea","type":"artist","uuid":"8a58b308-6854-45e4-a4e6-6f64a2a8f836"}
album: Mia Vradia Stis Moires (Live)
  type: MusicAlbum
  date published: 2000
album: Cretan Folk Music (Instrumental)
  type: MusicAlbum
  date published: 2000-01-01
album: 25 Chronia Meta
  type: MusicAlbum
  date published: 2005-01-01
album: Pantermo Rethemnos
  type: MusicAlbum
  date published: 2008-06-18
  track: Xenes Kardies Eglentiza - Syrtos
    type: MusicRecording
    duration: PT6M33S
    duration ms: 393426
    explicit: false
    by artist: Leonidas Klados
    in album: Pantermo Rethemnos
      type: MusicAlbum
      date published: 2008-06-18
    genre: traditional music
    isrc code: GRLE10800717
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T22:37:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb2fb3290f7b54c2017c1db1c0674a8b277980fc123bc3c531e78ff514bef7e05
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRLE10800717
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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 0xb2fb3290f7b54c2017c1db1c0674a8b277980fc123bc3c531e78ff514bef7e05. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GRLE10800717.
      date published: 2026-07-06T01:26:17Z
    audio: Xenes Kardies Eglentiza - Syrtos
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.699
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.471
      additional property: Energy
        type: PropertyValue
        value: 0.467
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.971
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.403
      additional property: Liveness
        type: PropertyValue
        value: 0.211
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.579
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.041
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Pantermo Rethemnos
  type: MusicAlbum
  date published: 2008-06-18
album: Leonidas Klados
  type: MusicAlbum
  date published: 2012-12-10
album: Gia Mian Agapi (Syrta)
  type: MusicAlbum
  date published: 2021-09-17