Bartek Koziorowski
type: MusicGroup
popularity: 6
followers: 499
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1949a2a0a980a9e6cfa6193067690730cad599f1e4ec2134d5357efa99630a0b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f99461d7-0168-4db8-8736-f8f05269f662.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f99461d7-0168-4db8-8736-f8f05269f662.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f99461d7-0168-4db8-8736-f8f05269f662
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1949a2a0a980a9e6cfa6193067690730cad599f1e4ec2134d5357efa99630a0b","name":"Bartek Koziorowski","registered_at":"2026-06-21T16:39:34Z","symbol":"NIM1975355","token_address":"0x93a5a85a11a86f96fe36cf2c248f11660c65f92c","type":"artist","uuid":"f99461d7-0168-4db8-8736-f8f05269f662"}
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 0x1949a2a0a980a9e6cfa6193067690730cad599f1e4ec2134d5357efa99630a0b. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f99461d7-0168-4db8-8736-f8f05269f662.json and https://artists.proofprofile.net/proofs/artist/f99461d7-0168-4db8-8736-f8f05269f662.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x1949a2a0a980a9e6cfa6193067690730cad599f1e4ec2134d5357efa99630a0b","name":"Bartek Koziorowski","registered_at":"2026-06-21T16:39:34Z","symbol":"NIM1975355","token_address":"0x93a5a85a11a86f96fe36cf2c248f11660c65f92c","type":"artist","uuid":"f99461d7-0168-4db8-8736-f8f05269f662"}
album: Home
  type: MusicAlbum
  date published: 2022-07-29
album: i miss my friend
  type: MusicAlbum
  date published: 2024-06-14
album: better this way
  type: MusicAlbum
  date published: 2024-07-26
album: tired
  type: MusicAlbum
  date published: 2024-09-27
  track: tired
    type: MusicRecording
    duration: PT2M6S
    duration ms: 126703
    explicit: false
    by artist: Bartek Koziorowski
    in album: tired
      type: MusicAlbum
      date published: 2024-09-27
    isrc code: QZWFG2497381
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T16:05:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x54ee2fc544c21929c47daccbe741f8cab04d16718e3250c3d64ef4ca2aa830b7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958576
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958576
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2497381
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T16:22:28Z
    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 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 0x54ee2fc544c21929c47daccbe741f8cab04d16718e3250c3d64ef4ca2aa830b7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2497381 — a six-check JSON result.
      date published: 2026-07-18T16:22:28Z
    audio: tired
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.023
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.681
      additional property: Energy
        type: PropertyValue
        value: 0.268
      additional property: Speechiness
        type: PropertyValue
        value: 0.099
      additional property: Acousticness
        type: PropertyValue
        value: 0.482
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.439
      additional property: Liveness
        type: PropertyValue
        value: 0.115
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.236
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.118
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: someone else
  type: MusicAlbum
  date published: 2024-11-22