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popularity: 2
followers: 4
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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track: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Kyrie
track: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Gloria
track: Mass No. 4 in C Major, Op. 48, D. 452: Kyrie
track: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Credo
track: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Benedictus
track: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Agnus Dei

Mass No. 3 in B-Flat Major, Op. 141, D. 324: Kyrie
type: MusicRecording
duration: PT5M6S
duration ms: 306400
explicit: false
by artist: Franz Schubert
by artist: Valentina Hristova
by artist: Maria Stoicheva
by artist: Ivan Moutafchiev
by artist: Stefan Vassilev
by artist: Bulgarian National Svetoslav Obretenov Choir
by artist: Sofia Philharmonic Orchestra
by artist: Georgi Robev
in album: Schubert: Masses Nos. 1-6 - Deutsche Messe
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  date published: 2010-08-24
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEB260980783
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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
additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e13187bf2973954e1eee69b9faffaedcb3506bc4a6975c87327e58de3f6aa3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB260980783.
  date published: 2026-07-08T08:56:20Z
audio: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Kyrie
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Mass No. 3 in B-Flat Major, Op. 141, D. 324: Gloria
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explicit: false
by artist: Franz Schubert
by artist: Valentina Hristova
by artist: Maria Stoicheva
by artist: Ivan Moutafchiev
by artist: Stefan Vassilev
by artist: Bulgarian National Svetoslav Obretenov Choir
by artist: Sofia Philharmonic Orchestra
by artist: Georgi Robev
in album: Schubert: Masses Nos. 1-6 - Deutsche Messe
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  date published: 2010-08-24
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Gloria
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Mass No. 4 in C Major, Op. 48, D. 452: Kyrie
type: MusicRecording
duration: PT3M47S
duration ms: 227000
explicit: false
by artist: Franz Schubert
by artist: Nikolina Pankova
by artist: Lilyana Ovcharova
by artist: Ivan Moutafchiev
by artist: Vassil Marchev
by artist: Bulgarian National Svetoslav Obretenov Choir
by artist: Sofia Philharmonic Orchestra
by artist: Georgi Robev
in album: Schubert: Masses Nos. 1-6 - Deutsche Messe
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  date published: 2010-08-24
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEB260980789
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Mass No. 4 in C Major, Op. 48, D. 452: Kyrie
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Mass No. 3 in B-Flat Major, Op. 141, D. 324: Credo
type: MusicRecording
duration: PT6M7S
duration ms: 367160
explicit: false
by artist: Franz Schubert
by artist: Valentina Hristova
by artist: Maria Stoicheva
by artist: Ivan Moutafchiev
by artist: Stefan Vassilev
by artist: Bulgarian National Svetoslav Obretenov Choir
by artist: Sofia Philharmonic Orchestra
by artist: Georgi Robev
in album: Schubert: Masses Nos. 1-6 - Deutsche Messe
  type: MusicAlbum
  date published: 2010-08-24
genre: classical
genre: classical-piano
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T00:40:43Z
audio: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Credo
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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

Mass No. 3 in B-Flat Major, Op. 141, D. 324: Benedictus
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by artist: Ivan Moutafchiev
by artist: Stefan Vassilev
by artist: Bulgarian National Svetoslav Obretenov Choir
by artist: Sofia Philharmonic Orchestra
by artist: Georgi Robev
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genre: classical
genre: classical-piano
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:13Z
audio: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Benedictus
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Mass No. 3 in B-Flat Major, Op. 141, D. 324: Agnus Dei
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by artist: Stefan Vassilev
by artist: Bulgarian National Svetoslav Obretenov Choir
by artist: Sofia Philharmonic Orchestra
by artist: Georgi Robev
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genre: classical
genre: classical-piano
genre: chamber-music
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  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28882e4c63309f9c71e2406a72bfd184099a1603d0deea3f6729e3c19b3e4ec. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEB260980788.
  date published: 2026-07-31T22:27:44Z
audio: Mass No. 3 in B-Flat Major, Op. 141, D. 324: Agnus Dei
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.592
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.254
  additional property: Energy
    type: PropertyValue
    value: 0.175
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.405
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.09
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.785
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: DEB260980788
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960473
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T22:27:44+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260980788
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960473
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960473
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T22:27:44+00:00
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