Michalis Kontaxakis
type: MusicGroup
genre: acoustic rock
genre: entehno
popularity: 10
followers: 418
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb3630495bb52be90b4cc767d3b0c2b48dcb2ca509860608033d6751d0e555b4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953922
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953922
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b8b11e2-2c5f-4b1a-8139-06019328a471.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b8b11e2-2c5f-4b1a-8139-06019328a471.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1b8b11e2-2c5f-4b1a-8139-06019328a471
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:36:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcb3630495bb52be90b4cc767d3b0c2b48dcb2ca509860608033d6751d0e555b4","name":"Michalis Kontaxakis","registered_at":"2026-06-15T23:02:06Z","symbol":"NIM0859535","token_address":"0x1bd34198560abf189afe1189271434964c7ecaff","type":"artist","uuid":"1b8b11e2-2c5f-4b1a-8139-06019328a471"}
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 0xcb3630495bb52be90b4cc767d3b0c2b48dcb2ca509860608033d6751d0e555b4. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b8b11e2-2c5f-4b1a-8139-06019328a471.json and https://artists.proofprofile.net/proofs/artist/1b8b11e2-2c5f-4b1a-8139-06019328a471.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xcb3630495bb52be90b4cc767d3b0c2b48dcb2ca509860608033d6751d0e555b4","name":"Michalis Kontaxakis","registered_at":"2026-06-15T23:02:06Z","symbol":"NIM0859535","token_address":"0x1bd34198560abf189afe1189271434964c7ecaff","type":"artist","uuid":"1b8b11e2-2c5f-4b1a-8139-06019328a471"}
album: Xefoto
  type: MusicAlbum
  date published: 2017-04-14
album: Idiotropo
  type: MusicAlbum
  date published: 2022-05-12
album: Ap' tsi korfes sto kyma
  type: MusicAlbum
  date published: 2025-01-24
  track: Xipna glikia neraida mou
    type: MusicRecording
    duration: PT6M4S
    duration ms: 364500
    explicit: false
    by artist: Michalis Kontaxakis
    in album: Ap' tsi korfes sto kyma
      type: MusicAlbum
      date published: 2025-01-24
    genre: acoustic rock
    genre: entehno
    isrc code: QM4TW2557637
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T14:42:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7ec4e937766ea6d519ed7457bd9a6091cd23a0f0ee9427880bcee911b91d5663
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2557637
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0x7ec4e937766ea6d519ed7457bd9a6091cd23a0f0ee9427880bcee911b91d5663. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TW2557637.
      date published: 2026-07-05T19:27:56Z
    audio: Xipna glikia neraida mou
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.673
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.496
      additional property: Energy
        type: PropertyValue
        value: 0.368
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.871
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.011
      additional property: Liveness
        type: PropertyValue
        value: 0.337
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.46
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.76
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major