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I Capuleti e i Montecchi, Act I: Act I: Oh! Quante volte, oh quante (Giulietta)
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Grosse Messe, Great Mass In C Minor Kv 427: Kyrie
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Wagner: Siegfried, WWV 86C
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Top 50 Classical Voices (Most Popular Vocal and Choral Works)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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track: Crucifixus
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  subject of: OpenTimestamps Proof of Existence
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track: Matthäus-Passion, BWV 244: Aria. Erbarme Dich
track: Hymn. Oh for a Closer Walk with God
track: Messiah, HWV 56: I Know That My Redeemer Liveth
track: Locus iste, WAB 23

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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Crucifixus
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Matthäus-Passion, BWV 244: Aria. Erbarme Dich
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Matthäus-Passion, BWV 244: Aria. Erbarme Dich
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Hymn. Oh for a Closer Walk with God
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Hymn. Oh for a Closer Walk with God
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Messiah, HWV 56: I Know That My Redeemer Liveth
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audio: Messiah, HWV 56: I Know That My Redeemer Liveth
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Locus iste, WAB 23
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Braunfels: Orchestral Songs, Vol. 1
type: MusicAlbum
date published: 2016-07-01

Mozart: Sacred Choral Works, Vol. 1
type: MusicAlbum
date published: 2011

Mozart: Mass in C Minor
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date published: 2009

Mozart Edition Volume 15
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date published: 2007-03-28
track: Grosse Messe, Great Mass In C Minor Kv 427: Kyrie
track: Missa Brevis In B Flat Major Kv 275: Kyrie
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  by artist: Nicol Matt
  by artist: Anja Bittner
  by artist: Jens Wollenschläger
  by artist: Reinhard Geller
  by artist: Gabriele Wunderer
  by artist: Wolfgang Amadeus Mozart
  by artist: Kurpfälzisches Kammerorchester Mannheim, Nordic Chamber Choir
  by artist: Robert Morvaj
  by artist: Manfred Bittner
  in album: Mozart Edition Volume 15
    type: MusicAlbum
    date published: 2007-03-28
  genre: classical
  genre: choral
  genre: requiem
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580515585
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T05:09:12Z
  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 0x2304e74ebba8356b2c500ae06a02ac846eb5b45629b3b7f74a8fad3d5a509dbe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLN580515585.
    date published: 2026-07-02T05:09:12Z
  audio: Missa Brevis In B Flat Major Kv 275: Kyrie
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    additional property: Liveness
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track: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Kyrie
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  duration: PT1M58S
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  explicit: false
  by artist: Nicol Matt
  by artist: Chrisof Fischesser
  by artist: Reinhard Geller
  by artist: Kurpfälzisches Kammerorchester Mannheim, Nordic Chamber Choir
  by artist: Barbara Werner
  by artist: Petra Labitzke
  by artist: Daniel Sans
  by artist: Wolfgang Amadeus Mozart
  by artist: Jens Wollenschläger
  in album: Mozart Edition Volume 15
    type: MusicAlbum
    date published: 2007-03-28
  genre: classical
  genre: choral
  genre: requiem
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  additional property: CopyrightID
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580515597
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T05:09:12Z
  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 0x33ba522ce8c5ae72574f3e7f646d3c660a46904b5ed6adbc5ce42bd3be819dfa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLN580515597.
    date published: 2026-07-02T05:09:12Z
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track: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Gloria
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  explicit: false
  by artist: Nicol Matt
  by artist: Kurpfälzisches Kammerorchester Mannheim, Nordic Chamber Choir
  by artist: Chrisof Fischesser
  by artist: Reinhard Geller
  by artist: Barbara Werner
  by artist: Petra Labitzke
  by artist: Daniel Sans
  by artist: Jens Wollenschläger
  by artist: Wolfgang Amadeus Mozart
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  genre: classical
  genre: choral
  genre: requiem
  isrc code: NLN580515598
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Gloria
track: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Credo
track: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Sanctus
track: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Benedictus
track: Missa Brevis In B Flat Major Kv 275: Agnus Dei
track: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Agnus Dei
track: Missa In C Major Kv 258, Spaurmesse: Benedictus

Kurpfälzisches Kammerorchester Mannheim, Nordic Chamber Choir
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Chrisof Fischesser
type: MusicGroup

Reinhard Geller
type: MusicGroup

Barbara Werner
type: MusicGroup

Petra Labitzke
type: MusicGroup

Daniel Sans
type: MusicGroup

Jens Wollenschläger
type: MusicGroup

Wolfgang Amadeus Mozart
type: MusicGroup

Mozart Edition Volume 15
type: MusicAlbum
date published: 2007-03-28

CopyrightID
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CopyrightStatus
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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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value: 956312

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956312

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580515598

OTSTimestamp
type: PropertyValue
value: 2026-07-02T05:09:12Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98d547acc99f25099791163f83c8395367fd157c8eeb184c2c10d8a6a44bd5e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLN580515598.
date published: 2026-07-02T05:09:12Z

Missa Brevis In C Major Kv 259, Orgelsolo Messe: Gloria
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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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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Missa Brevis In C Major Kv 259, Orgelsolo Messe: Credo
type: MusicRecording
duration: PT3M37S
duration ms: 217750
explicit: false
by artist: Nicol Matt
by artist: Kurpfälzisches Kammerorchester Mannheim, Nordic Chamber Choir
by artist: Chrisof Fischesser
by artist: Reinhard Geller
by artist: Barbara Werner
by artist: Petra Labitzke
by artist: Daniel Sans
by artist: Jens Wollenschläger
by artist: Wolfgang Amadeus Mozart
in album: Mozart Edition Volume 15
  type: MusicAlbum
  date published: 2007-03-28
genre: classical
genre: choral
genre: requiem
isrc code: NLN580515599
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580515599
additional property: OTSTimestamp
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22c5dc40c6b3ae7ef9bd8d6076495b2d683c253d8e7e7f460953cb724e5d106. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLN580515599.
  date published: 2026-07-06T07:53:57Z
audio: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Credo
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Missa Brevis In C Major Kv 259, Orgelsolo Messe: Sanctus
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duration: PT0M55S
duration ms: 55750
explicit: false
by artist: Nicol Matt
by artist: Kurpfälzisches Kammerorchester Mannheim, Nordic Chamber Choir
by artist: Chrisof Fischesser
by artist: Reinhard Geller
by artist: Petra Labitzke
by artist: Barbara Werner
by artist: Jens Wollenschläger
by artist: Daniel Sans
by artist: Wolfgang Amadeus Mozart
in album: Mozart Edition Volume 15
  type: MusicAlbum
  date published: 2007-03-28
genre: classical
genre: choral
genre: requiem
isrc code: NLN580515600
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169556e740979223f3725ffe6985c6c3511df51ce68ad262a7f3a9d560d74487. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLN580515600.
  date published: 2026-07-02T11:38:34Z
audio: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Sanctus
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Missa Brevis In C Major Kv 259, Orgelsolo Messe: Benedictus
type: MusicRecording
duration: PT2M6S
duration ms: 126750
explicit: false
by artist: Nicol Matt
by artist: Reinhard Geller
by artist: Chrisof Fischesser
by artist: Kurpfälzisches Kammerorchester Mannheim, Nordic Chamber Choir
by artist: Barbara Werner
by artist: Petra Labitzke
by artist: Wolfgang Amadeus Mozart
by artist: Daniel Sans
by artist: Jens Wollenschläger
in album: Mozart Edition Volume 15
  type: MusicAlbum
  date published: 2007-03-28
genre: classical
genre: choral
genre: requiem
isrc code: NLN580515601
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a87c394783a2c4084878f26cb5d0d4fa066f89e28c2400111925aaf706ebc8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLN580515601.
  date published: 2026-07-02T03:55:08Z
audio: Missa Brevis In C Major Kv 259, Orgelsolo Messe: Benedictus
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Missa Brevis In B Flat Major Kv 275: Agnus Dei
type: MusicRecording
duration: PT5M29S
duration ms: 329000
explicit: false
by artist: Nicol Matt
by artist: Kurpfälzisches Kammerorchester Mannheim, Nordic Chamber Choir
by artist: Reinhard Geller
by artist: Wolfgang Amadeus Mozart
by artist: Robert Morvaj
by artist: Anja Bittner
by artist: Manfred Bittner
by artist: Jens Wollenschläger
by artist: Gabriele Wunderer
in album: Mozart Edition Volume 15
  type: MusicAlbum
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genre: classical
genre: choral
genre: requiem
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additional property: CopyrightID
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subject of: OpenTimestamps Proof of Existence
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Missa Brevis In C Major Kv 259, Orgelsolo Messe: Agnus Dei
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  date published: 2026-07-06T07:16:32Z
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Missa In C Major Kv 258, Spaurmesse: Benedictus
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by artist: Wolfgang Amadeus Mozart
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by artist: Barbara Werner
by artist: Reinhard Geller
by artist: Daniel Sans
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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Mozart: The Great Masses
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date published: 2006

Great Mass
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date published: 2006-12-20

Mozart, The Master Works Part: 37
type: MusicAlbum
date published: 2006-12-20

Mozart: Sacred Music, Vol. 2
type: MusicAlbum
date published: 2006

Live in Italy! A Sinatra Anthology (Double Album)
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date published: 2019-12-20