Classical Sundays
type: MusicGroup
genre: neoclassical
popularity: 9
followers: 98
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  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
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  date published: 2026-06-19T03:22:39Z
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album: Classical Deluxe Relax
  type: MusicAlbum
  date published: 2022-12-26
album: Classical Sleep
  type: MusicAlbum
  date published: 2022-12-05
album: Relaxing Classical for Chilled Sundays
  type: MusicAlbum
  date published: 2022-11-28
album: Classical Music Weekends
  type: MusicAlbum
  date published: 2022-11-21
album: Sunday Morning Classic Pianos
  type: MusicAlbum
  date published: 2022-11-14
album: Sunday Morning Classical Radios
  type: MusicAlbum
  date published: 2022-10-31
album: Sunday Morning Classics
  type: MusicAlbum
  date published: 2022-10-24
album: Classical Sundays Mornings
  type: MusicAlbum
  date published: 2022-10-03
album: Classical Sunday Morning
  type: MusicAlbum
  date published: 2022-08-15
album: Sunday Morning Classical
  type: MusicAlbum
  date published: 2022-03-14
album: Relaxing Classical Pieces
  type: MusicAlbum
  date published: 2022-02-28
album: Mitt hjerte alltid vanker (Arr. for Solo Violin and Ensemble)
  type: MusicAlbum
  date published: 2021-10-08
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    by artist: Mari Samuelsen
    by artist: Christian Badzura
    by artist: Classical Sundays
    in album: Mitt hjerte alltid vanker (Arr. for Solo Violin and Ensemble)
      type: MusicAlbum
      date published: 2021-10-08
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    additional property: OTSVerifyInstructions
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      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
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      date published: 2026-07-02T03:30:09Z
    audio: Mitt hjerte alltid vanker (Arr. for Solo Violin and Ensemble)
      type: AudioObject
      additional property: Tempo (BPM)
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        value: 135.693
      additional property: Musical Key
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      additional property: Mode (Major/Minor)
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        value: 0
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        value: 5
      additional property: Danceability
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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        value: -20.039
      additional property: Key Name
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        value: E
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        type: PropertyValue
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album: Maoz Tzur (Winter Tales Version)
  type: MusicAlbum
  date published: 2021-09-24
  track: Maoz Tzur (Winter Tales Version)
    type: MusicRecording
    duration: PT3M14S
    duration ms: 194434
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    by artist: Classical Sundays
    in album: Maoz Tzur (Winter Tales Version)
      type: MusicAlbum
      date published: 2021-09-24
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    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 0x2cc112e7a0dfba70063439f13c33ff7a41c79f17401059bd16429054492f4a2c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEN962101320.
      date published: 2026-07-08T03:20:19Z
    audio: Maoz Tzur (Winter Tales Version)

Maoz Tzur (Winter Tales Version)
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additional property: Tempo (BPM)
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