Janusz Grzywacz
type: MusicGroup
genre: jazz fusion
popularity: 5
followers: 313
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953933
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953933
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1fee2673-0935-4323-89cb-942697e767ca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1fee2673-0935-4323-89cb-942697e767ca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1fee2673-0935-4323-89cb-942697e767ca
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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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
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38874399c4f2c648393fc6a4136e3139f12f4cab7d9909663f433197be95e4b0. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fee2673-0935-4323-89cb-942697e767ca.json and https://artists.proofprofile.net/proofs/artist/1fee2673-0935-4323-89cb-942697e767ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:13:24Z
  text: {"copyright_id":"0x38874399c4f2c648393fc6a4136e3139f12f4cab7d9909663f433197be95e4b0","name":"Janusz Grzywacz","registered_at":"2026-06-16T00:40:19Z","symbol":"NIM0883000","token_address":"0x8c368451a6bced2a2df15699328dbd7c42c5383b","type":"artist","uuid":"1fee2673-0935-4323-89cb-942697e767ca"}
album: Jak Janosik Tańczył z Cesarzową
  type: MusicAlbum
  date published: 1993
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  type: MusicAlbum
  date published: 2005
album: Młynek Kawowy
  type: MusicAlbum
  date published: 2005-01-01
  track: 01 Młynek Kawowy
    type: MusicRecording
    duration: PT2M45S
    duration ms: 165877
    explicit: false
    by artist: Janusz Grzywacz
    in album: Młynek Kawowy
      type: MusicAlbum
      date published: 2005-01-01
    genre: jazz fusion
    isrc code: CALVP1928108
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T02:37:57+00:00
    additional property: CopyrightChainExplorerURL
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      value: https://explorer.copyrightchains.com/tx/0x4ade822fd5009bef60a21ca42bb92ab72c8dfdc688425ed51dfebf5248bcd2be
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958484
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958484
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALVP1928108
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T03:34:53Z
    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 0x4ade822fd5009bef60a21ca42bb92ab72c8dfdc688425ed51dfebf5248bcd2be. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CALVP1928108.
      date published: 2026-07-18T03:34:53Z
    audio: 01 Młynek Kawowy
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 102.054
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.882
      additional property: Energy
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        value: 0.35
      additional property: Speechiness
        type: PropertyValue
        value: 0.132
      additional property: Acousticness
        type: PropertyValue
        value: 0.225
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.067
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.812
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.42
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
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type: MusicAlbum
date published: 2023-02-02