Chór i zespół instrumentalny duszpasterstwa akademickiego w Kaliszu
type: MusicGroup
genre: gregorian chant
popularity: 9
followers: 300
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x348d9c83f8d701c8ccfd3c6305a223e78d15adf28c5ec309d2520d7eee7233f6
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5d2a53cf-712d-49dd-8b45-0ac05421e497.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/5d2a53cf-712d-49dd-8b45-0ac05421e497.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5d2a53cf-712d-49dd-8b45-0ac05421e497
additional property: OTSTimestamp
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  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x348d9c83f8d701c8ccfd3c6305a223e78d15adf28c5ec309d2520d7eee7233f6","name":"Chór i zespół instrumentalny duszpasterstwa akademickiego w Kaliszu","registered_at":"2026-06-16T22:07:54Z","symbol":"NIM1190320","token_address":"0x15ab383d2e5515756a7c9f3716f6cd6f86948732","type":"artist","uuid":"5d2a53cf-712d-49dd-8b45-0ac05421e497"}
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 0x348d9c83f8d701c8ccfd3c6305a223e78d15adf28c5ec309d2520d7eee7233f6. 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/5d2a53cf-712d-49dd-8b45-0ac05421e497.json and https://artists.proofprofile.net/proofs/artist/5d2a53cf-712d-49dd-8b45-0ac05421e497.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x348d9c83f8d701c8ccfd3c6305a223e78d15adf28c5ec309d2520d7eee7233f6","name":"Chór i zespół instrumentalny duszpasterstwa akademickiego w Kaliszu","registered_at":"2026-06-16T22:07:54Z","symbol":"NIM1190320","token_address":"0x15ab383d2e5515756a7c9f3716f6cd6f86948732","type":"artist","uuid":"5d2a53cf-712d-49dd-8b45-0ac05421e497"}
album: Nowa pieśń
  type: MusicAlbum
  date published: 2009
  track: Skosztujcie i zobaczcie
    type: MusicRecording
    duration: PT3M44S
    duration ms: 224360
    explicit: false
    by artist: Chór i zespół instrumentalny duszpasterstwa akademickiego w Kaliszu
    in album: Nowa pieśń
      type: MusicAlbum
      date published: 2009
    genre: gregorian chant
    isrc code: PLL971400227
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T07:12:10+00:00
    additional property: CopyrightChainExplorerURL
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLL971400227
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0x9a66e11d5f07955d3284c0f0da108b5461567d1829bcec0df9827e587d6c2cc5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLL971400227.
      date published: 2026-07-02T16:51:38Z
    audio: Skosztujcie i zobaczcie
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.18
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.184
      additional property: Energy
        type: PropertyValue
        value: 0.191
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.878
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.208
      additional property: Liveness
        type: PropertyValue
        value: 0.167
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.094
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.99
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major