Zdeněk Kožina
type: MusicGroup
popularity: 5
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x091d95f471cc8de489bbbc40006be948c2e5445e770195aca16b533008206c52
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954097
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954097
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b12fdc1-ea77-4e32-b997-8f551b339b3d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b12fdc1-ea77-4e32-b997-8f551b339b3d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7b12fdc1-ea77-4e32-b997-8f551b339b3d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T13:13:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x091d95f471cc8de489bbbc40006be948c2e5445e770195aca16b533008206c52","name":"Zdeněk Kožina","registered_at":"2026-06-17T08:33:23Z","symbol":"NIM1339529","token_address":"0xc8e557aa71d54f0ef682ddf273c7eb91f81182a7","type":"artist","uuid":"7b12fdc1-ea77-4e32-b997-8f551b339b3d"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091d95f471cc8de489bbbc40006be948c2e5445e770195aca16b533008206c52. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b12fdc1-ea77-4e32-b997-8f551b339b3d.json and https://artists.proofprofile.net/proofs/artist/7b12fdc1-ea77-4e32-b997-8f551b339b3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T13:13:51Z
  text: {"copyright_id":"0x091d95f471cc8de489bbbc40006be948c2e5445e770195aca16b533008206c52","name":"Zdeněk Kožina","registered_at":"2026-06-17T08:33:23Z","symbol":"NIM1339529","token_address":"0xc8e557aa71d54f0ef682ddf273c7eb91f81182a7","type":"artist","uuid":"7b12fdc1-ea77-4e32-b997-8f551b339b3d"}
album: Pieces For Piano (Chopin, Slavický, Prokofiev)
  type: MusicAlbum
  date published: 2024-08-09
track: Bugatti Step
  type: MusicRecording
  duration: PT2M35S
  duration ms: 155426
  explicit: false
  by artist: Jaroslav Ježek
  by artist: Zdeněk Kožina
  in album: Ježek: Smiles
    type: MusicAlbum
    date published: 2014-01-03
  isrc code: CZA167600565
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-19T13:37:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8ef775487c0375f5a878f5b9f33b7868f1c71892998c17711891e9e483be515b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956302
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167600565
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef775487c0375f5a878f5b9f33b7868f1c71892998c17711891e9e483be515b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CZA167600565.
    date published: 2026-07-02T03:30:09Z
  audio: Bugatti Step
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 133.031
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.379
    additional property: Energy
      type: PropertyValue
      value: 0.232
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.991
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.931
    additional property: Liveness
      type: PropertyValue
      value: 0.197
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.619
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.614
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major