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genre: choral
genre: gregorian chant
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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 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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album: 150 Years Rachmaninoff
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album: Rachmaninoff: Vespers, Op. 37
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    by artist: Olga Borusene
    by artist: National Choir Of The Ukraine "Dumka"
    by artist: Yevhen Savchuk
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:55:08Z
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:55:08Z
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  track: Vespers, Op. 37: Blessed Be the Man
  track: Vespers, Op. 37: Rejoice, O Virgin
album: Rachmaninov Vespers
album: Tchaikovsky: Liturgy of St. John Chrysostom
album: Top 50 Classical Voices (Most Popular Vocal and Choral Works)
album: Russian Orthodox Choral Music
album: Classical Christmas
album: Russian Christmas
album: Requiem
album: Musiques sacrées et profanes d'Ukraine

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Vespers, Op. 37: Blessed Be the Man
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by artist: Yuri Korinnyk
by artist: Mykhaylo Tyshchenko
by artist: Olga Borusene
by artist: National Choir Of The Ukraine "Dumka"
by artist: Yevhen Savchuk
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
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Vespers, Op. 37: Rejoice, O Virgin
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by artist: Yevhen Savchuk
by artist: Olga Borusene
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Rachmaninov Vespers
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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    date published: 2026-07-02T03:30:09Z
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  audio: Liturgy of St. John Chrysostom, Op. 41: III. Come, Let Us Worship
track: Liturgy of St. John Chrysostom, Op. 41: IV. Hallelujah
track: Liturgy of St. John Chrysostom, Op. 41: V. Glory Be to Thee
track: Liturgy of St. John Chrysostom, Op. 41: VI. Hymn of the Cherubim
track: Liturgy of St. John Chrysostom, Op. 41: VII. Lord Have Mercy
track: Liturgy of St. John Chrysostom, Op. 41: VIII. The Creed
track: Liturgy of St. John Chrysostom, Op. 41: IX. A Mercy of Peace
track: Liturgy of St. John Chrysostom, Op. 41: X. We Sing Thee
track: Liturgy of St. John Chrysostom, Op. 41: XI. It Is Meet
track: Liturgy of St. John Chrysostom, Op. 41: XII. Amen and with Thy Spirit
track: Liturgy of St. John Chrysostom, Op. 41: XIII. Our Father
track: Liturgy of St. John Chrysostom, Op. 41: XIV. Praise the Lord from the Heavens
track: Liturgy of St. John Chrysostom, Op. 41: XV. Blessed is He Who Comes in the Name of the Lord

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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-02T03:30:09Z

Liturgy of St. John Chrysostom, Op. 41: III. Come, Let Us Worship
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Liturgy of St. John Chrysostom, Op. 41: IV. Hallelujah
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Liturgy of St. John Chrysostom, Op. 41: IV. Hallelujah
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Liturgy of St. John Chrysostom, Op. 41: V. Glory Be to Thee
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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Liturgy of St. John Chrysostom, Op. 41: VI. Hymn of the Cherubim
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
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Liturgy of St. John Chrysostom, Op. 41: VII. Lord Have Mercy
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subject of: OpenTimestamps Proof of Existence
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Liturgy of St. John Chrysostom, Op. 41: VIII. The Creed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Liturgy of St. John Chrysostom, Op. 41: IX. A Mercy of Peace
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by artist: Yevhen Savchuk
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Liturgy of St. John Chrysostom, Op. 41: X. We Sing Thee
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Liturgy of St. John Chrysostom, Op. 41: X. We Sing Thee
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Liturgy of St. John Chrysostom, Op. 41: XI. It Is Meet
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Liturgy of St. John Chrysostom, Op. 41: XI. It Is Meet
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Liturgy of St. John Chrysostom, Op. 41: XII. Amen and with Thy Spirit
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Liturgy of St. John Chrysostom, Op. 41: XII. Amen and with Thy Spirit
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Liturgy of St. John Chrysostom, Op. 41: XIII. Our Father
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Liturgy of St. John Chrysostom, Op. 41: XIII. Our Father
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Liturgy of St. John Chrysostom, Op. 41: XIV. Praise the Lord from the Heavens
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Liturgy of St. John Chrysostom, Op. 41: XV. Blessed is He Who Comes in the Name of the Lord
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Top 50 Classical Voices (Most Popular Vocal and Choral Works)
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date published: 2013-07-22

Russian Orthodox Choral Music
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date published: 2020-12-25

Classical Christmas
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date published: 2021-11-27

Russian Christmas
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date published: 2007-01-01
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Requiem
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Musiques sacrées et profanes d'Ukraine
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