Maciej Miecznikowski
type: MusicGroup
genre: disco polo
popularity: 6
followers: 343
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae6c821b3d8cd3e3a2e0b0bf6ffee3a5ae2a06f783a1950eaa98975ec20a48eb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954035
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954035
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3cf4a475-e987-48f3-b167-882d4120c2eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3cf4a475-e987-48f3-b167-882d4120c2eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3cf4a475-e987-48f3-b167-882d4120c2eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:39:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xae6c821b3d8cd3e3a2e0b0bf6ffee3a5ae2a06f783a1950eaa98975ec20a48eb","name":"Maciej Miecznikowski","registered_at":"2026-06-16T10:47:48Z","symbol":"NIM1028059","token_address":"0x3e2d7a3aa58161c930960735450b747943333d26","type":"artist","uuid":"3cf4a475-e987-48f3-b167-882d4120c2eb"}
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 0xae6c821b3d8cd3e3a2e0b0bf6ffee3a5ae2a06f783a1950eaa98975ec20a48eb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cf4a475-e987-48f3-b167-882d4120c2eb.json and https://artists.proofprofile.net/proofs/artist/3cf4a475-e987-48f3-b167-882d4120c2eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xae6c821b3d8cd3e3a2e0b0bf6ffee3a5ae2a06f783a1950eaa98975ec20a48eb","name":"Maciej Miecznikowski","registered_at":"2026-06-16T10:47:48Z","symbol":"NIM1028059","token_address":"0x3e2d7a3aa58161c930960735450b747943333d26","type":"artist","uuid":"3cf4a475-e987-48f3-b167-882d4120c2eb"}
album: Będzie Z Nami Dobrze
  type: MusicAlbum
  date published: 2014-09-06
album: Tribute to Nat King Cole
  type: MusicAlbum
  date published: 2015-05-31
album: Moje Ulubione Kolędy: Specjalna Edycja Świąteczna, Vol. 1
  type: MusicAlbum
  date published: 2017-12-22
album: Wyśpiewać 100 Lat Niepodległości
  type: MusicAlbum
  date published: 2018-01-11
album: Ogrodzie Oliwny (Tradycyjne I Nowe Pieśni Pasyjne)
  type: MusicAlbum
  date published: 2022-04-12
album: Któregoś dnia odlecę stąd
  type: MusicAlbum
  date published: 2025-09-27
  track: Któregoś dnia odlecę stąd
    type: MusicRecording
    duration: PT3M34S
    duration ms: 214421
    explicit: false
    by artist: Maciej Miecznikowski
    in album: Któregoś dnia odlecę stąd
      type: MusicAlbum
      date published: 2025-09-27
    genre: disco polo
    isrc code: PLY332500001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T18:25:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x58f8c18ec8cc574528bd6eb054e8fcef4963a6c845956ae77d045c5489dca1ba
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956551
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956551
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLY332500001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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 0x58f8c18ec8cc574528bd6eb054e8fcef4963a6c845956ae77d045c5489dca1ba. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLY332500001.
      date published: 2026-07-03T21:18:05Z
    audio: Któregoś dnia odlecę stąd
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 112.981
      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: 0.765
      additional property: Energy
        type: PropertyValue
        value: 0.523
      additional property: Speechiness
        type: PropertyValue
        value: 0.069
      additional property: Acousticness
        type: PropertyValue
        value: 0.558
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.126
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.381
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.231
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor