Zespól Piesni i Tanca Uniwersytetu Gdanskiego Jantar
type: MusicGroup
popularity: 6
followers: 186
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe880b1b302c4573041673d2523bbad676841430a94b42e36468f416022037f38
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953959
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953959
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/279d8d64-1d44-4645-8a65-76eb26e7f4e6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/279d8d64-1d44-4645-8a65-76eb26e7f4e6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/279d8d64-1d44-4645-8a65-76eb26e7f4e6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:51:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe880b1b302c4573041673d2523bbad676841430a94b42e36468f416022037f38. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/279d8d64-1d44-4645-8a65-76eb26e7f4e6.json and https://artists.proofprofile.net/proofs/artist/279d8d64-1d44-4645-8a65-76eb26e7f4e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xe880b1b302c4573041673d2523bbad676841430a94b42e36468f416022037f38","name":"Zespól Piesni i Tanca Uniwersytetu Gdanskiego Jantar","registered_at":"2026-06-16T03:20:44Z","symbol":"NIM0921304","token_address":"0xc48b1fedc0c713a94819d4b1fed73512a1c9598c","type":"artist","uuid":"279d8d64-1d44-4645-8a65-76eb26e7f4e6"}
album: Polski Folklor - Biesiada Kto sie zeni
  type: MusicAlbum
  date published: 2015-05-12
album: Koledy i Pastoralki Serca Ludzkie Sie Raduja
  type: MusicAlbum
  date published: 2015-06-23
album: Z Głębi Nowe
  type: MusicAlbum
  date published: 2022-02-01
  track: Hej, od Krakowa jadę
    type: MusicRecording
    duration: PT2M22S
    duration ms: 142361
    explicit: false
    by artist: Zespól Piesni i Tanca Uniwersytetu Gdanskiego Jantar
    in album: Z Głębi Nowe
      type: MusicAlbum
      date published: 2022-02-01
    isrc code: QZFZ22276775
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956728
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22276775
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:43:49Z
    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 0x2ab36bedb731eb5d497809f1d6772d0f9fb21bf4f03e6328974af97821564277. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ22276775.
      date published: 2026-07-05T01:43:49Z
    audio: Hej, od Krakowa jadę
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.924
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.578
      additional property: Energy
        type: PropertyValue
        value: 0.58
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.572
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.481
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.876
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major