Cantores Minores Wratislavienses; Edmund Kajdesz
type: MusicGroup
genre: gregorian chant
genre: medieval
popularity: 8
followers: 46
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x458ee71bedce0de3660d12820a8b62cec330a5120052269e8450a7f05e78aca0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/94214a5a-7e60-42b6-9908-628bf22154c4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/94214a5a-7e60-42b6-9908-628bf22154c4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/94214a5a-7e60-42b6-9908-628bf22154c4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x458ee71bedce0de3660d12820a8b62cec330a5120052269e8450a7f05e78aca0","name":"Cantores Minores Wratislavienses; Edmund Kajdesz","registered_at":"2026-06-17T17:21:00Z","symbol":"NIM1465325","token_address":"0x1a98838969a63fa08bcf20046d889fd38ba98ce9","type":"artist","uuid":"94214a5a-7e60-42b6-9908-628bf22154c4"}
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 0x458ee71bedce0de3660d12820a8b62cec330a5120052269e8450a7f05e78aca0. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94214a5a-7e60-42b6-9908-628bf22154c4.json and https://artists.proofprofile.net/proofs/artist/94214a5a-7e60-42b6-9908-628bf22154c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x458ee71bedce0de3660d12820a8b62cec330a5120052269e8450a7f05e78aca0","name":"Cantores Minores Wratislavienses; Edmund Kajdesz","registered_at":"2026-06-17T17:21:00Z","symbol":"NIM1465325","token_address":"0x1a98838969a63fa08bcf20046d889fd38ba98ce9","type":"artist","uuid":"94214a5a-7e60-42b6-9908-628bf22154c4"}
album: Tradycyjne wykonanie najpiękniejszych polskich kolęd
  type: MusicAlbum
  date published: 2009-01-01
album: Arcydziela Spiweów Gregorianskich
  type: MusicAlbum
  date published: 2009-01-01
  track: Ut Queant Laxis
    type: MusicRecording
    duration: PT2M43S
    duration ms: 163066
    explicit: false
    by artist: Cantores Minores Wratislavienses; Edmund Kajdesz
    in album: Arcydziela Spiweów Gregorianskich
      type: MusicAlbum
      date published: 2009-01-01
    genre: gregorian chant
    genre: medieval
    isrc code: PLJ051300079
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T05:23:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x21b1084bd8ed64410e40113c4f91209918ba264ddfae4963db4363efa891171e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958501
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958501
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLJ051300079
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T05:33:04Z
    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 0x21b1084bd8ed64410e40113c4f91209918ba264ddfae4963db4363efa891171e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/PLJ051300079.
      date published: 2026-07-18T05:33:04Z
    audio: Ut Queant Laxis
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.161
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 1
      additional property: Danceability
        type: PropertyValue
        value: 0.131
      additional property: Energy
        type: PropertyValue
        value: 0.182
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.888
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.14
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.13
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.484
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major