Piotr Krępeć
type: MusicGroup
popularity: 7
followers: 243
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa7cfd3fef54196ddda3c4e742a4c535647f3aa3ac82ca8ae06638bb07c5a9116
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f21fafcc-96dc-453f-8343-30e447190574.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f21fafcc-96dc-453f-8343-30e447190574.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f21fafcc-96dc-453f-8343-30e447190574
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa7cfd3fef54196ddda3c4e742a4c535647f3aa3ac82ca8ae06638bb07c5a9116","name":"Piotr Krępeć","registered_at":"2026-06-21T13:17:21Z","symbol":"NIM1933207","token_address":"0x13731523b44afeb752df52dbd9cba3da31fd100e","type":"artist","uuid":"f21fafcc-96dc-453f-8343-30e447190574"}
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 0xa7cfd3fef54196ddda3c4e742a4c535647f3aa3ac82ca8ae06638bb07c5a9116. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f21fafcc-96dc-453f-8343-30e447190574.json and https://artists.proofprofile.net/proofs/artist/f21fafcc-96dc-453f-8343-30e447190574.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xa7cfd3fef54196ddda3c4e742a4c535647f3aa3ac82ca8ae06638bb07c5a9116","name":"Piotr Krępeć","registered_at":"2026-06-21T13:17:21Z","symbol":"NIM1933207","token_address":"0x13731523b44afeb752df52dbd9cba3da31fd100e","type":"artist","uuid":"f21fafcc-96dc-453f-8343-30e447190574"}
album: Movement in Silence
  type: MusicAlbum
  date published: 2018-09-01
album: Impromptu Session 1
  type: MusicAlbum
  date published: 2023-10-06
album: Earth
  type: MusicAlbum
  date published: 2023-11-24
album: The Journey
  type: MusicAlbum
  date published: 2024-06-07
album: Morning
  type: MusicAlbum
  date published: 2024-10-01
album: Mystery
  type: MusicAlbum
  date published: 2024-11-01
album: A dance
  type: MusicAlbum
  date published: 2024-12-06
album: Wonder
  type: MusicAlbum
  date published: 2025-01-03
  track: Wonder
    type: MusicRecording
    duration: PT3M49S
    duration ms: 229590
    explicit: false
    by artist: Piotr Krępeć
    in album: Wonder
      type: MusicAlbum
      date published: 2025-01-03
    isrc code: PL82U2400005
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T06:24:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2ff103bcca9b785a252234a24e2695b2322369242638ece78f228f4c244bcd90
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958980
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958980
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL82U2400005
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T07:04:12Z
    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 0x2ff103bcca9b785a252234a24e2695b2322369242638ece78f228f4c244bcd90. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/PL82U2400005.
      date published: 2026-07-21T07:04:12Z
    audio: Wonder
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.974
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.267
      additional property: Energy
        type: PropertyValue
        value: 0.067
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.989
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.954
      additional property: Liveness
        type: PropertyValue
        value: 0.101
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.061
      additional property: Loudness (dB)
        type: PropertyValue
        value: -24.721
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor