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type: MusicGroup
genre: choral
popularity: 3
followers: 174
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additional property: OTSVerifyInstructions
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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
subject of: OpenTimestamps Proof of Existence
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album: Peace - Music For Reflection And Consolation
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album: Finland 100 Years: Classical Music
  type: MusicAlbum
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    by artist: Erkki Rautio
    by artist: Izumi Tateno
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-06-13T17:25:41Z
    audio: Berceuse
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    additional property: OTSVerifyInstructions
      type: PropertyValue
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-06-13T15:41:10Z
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  track: Miscellanea, Op. 16: IV. Nocturne in B-Flat Major
album: Choral Concert: Yl Male Voice Choir - Linkola, J. / Schubert, F. / Godzinsky, G. / Fougstedt, N. / Lindstrom, E. (Sulle Kauneimmat Lauluni Laulan)
album: 21s Century Classical
album: Talescapes
album: Rautavaara, E.: Choral Music for Male Choir (Complete)
album: Music for the Night
album: Arvo Pärt
album: Punapaula / Red Ribbon
album: A Day in Paradise (tranquil choral works)
album: Classical Lullaby

De Profundis (1980)
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by artist: Arvo Pärt
by artist: Talla Vocal Ensemble
in album: Arvo Pärt
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
audio: De Profundis (1980)
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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

Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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Nocturne in C-Sharp Minor, B. 49
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by artist: Mikhail Pletnev
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genre: early-romantic-era
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
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Miscellanea, Op. 16: IV. Nocturne in B-Flat Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
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Choral Concert: Yl Male Voice Choir - Linkola, J. / Schubert, F. / Godzinsky, G. / Fougstedt, N. / Lindstrom, E. (Sulle Kauneimmat Lauluni Laulan)
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date published: 2005-01-01

21s Century Classical
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Talescapes
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Rautavaara, E.: Choral Music for Male Choir (Complete)
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Music for the Night
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date published: 2018-05-21

Arvo Pärt
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track: Spiegel im Spiegel
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track: Fratres
track: De Profundis (1980)

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date published: 2026-07-08T03:20:19Z

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A Day in Paradise (tranquil choral works)
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