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type: MusicGroup
genre: requiem
popularity: 5
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x85ed0856e5371c8e21e97b33a42fc2d6f1565c23fe35ee9e78fa207722b9f4e8
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2dc0642-6c4c-454f-bd7d-ec7b5435357b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2dc0642-6c4c-454f-bd7d-ec7b5435357b.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b2dc0642-6c4c-454f-bd7d-ec7b5435357b
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ed0856e5371c8e21e97b33a42fc2d6f1565c23fe35ee9e78fa207722b9f4e8. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2dc0642-6c4c-454f-bd7d-ec7b5435357b.json and https://artists.proofprofile.net/proofs/artist/b2dc0642-6c4c-454f-bd7d-ec7b5435357b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
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track: Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Sequence No. 2: Tuba mirum (Soprano, Mezzo-soprano, Tenor, Baritone)
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  duration: PT3M54S
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  by artist: Wolfgang Amadeus Mozart
  by artist: Olga Pasichnyk
  by artist: Anna Lubanska
  by artist: Krzysztof Szmyt
  by artist: Krzysztof Borysiewicz
  by artist: Łukasz Hodor
  by artist: Sinfonia Amabile Orchestra
  by artist: Piotr Wajrak
  in album: Mozart: Requiem in D Minor, K. 626
    type: MusicAlbum
    date published: 2015-11-06
  popularity: 2
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: PLA161521004
  additional property: CopyrightID
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    type: PropertyValue
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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/PLA161521004
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T05:23:41Z
  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 0x0dd678d3bdfd98a71b529c36fc713694158d976580a840026992cab90fc141a3. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/PLA161521004.
    date published: 2026-07-31T05:23:41Z
  audio: Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Sequence No. 2: Tuba mirum (Soprano, Mezzo-soprano, Tenor, Baritone)
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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: Speechiness
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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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      type: PropertyValue
      value: Bb
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track: Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Sequence No. 4: Recordare, Jesu pie (Soprano, Mezzo-soprano, Tenor, Baritone)
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  by artist: Wolfgang Amadeus Mozart
  by artist: Olga Pasichnyk
  by artist: Anna Lubanska
  by artist: Krzysztof Szmyt
  by artist: Krzysztof Borysiewicz
  by artist: Sinfonia Amabile Orchestra
  by artist: Piotr Wajrak
  in album: Mozart: Requiem in D Minor, K. 626
    type: MusicAlbum
    date published: 2015-11-06
  popularity: 2
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x9fbee82afddc75417e7382caae65d1c4cfe5c471871efbc83d197b55e84d9e03. 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/PLA161521006.
    date published: 2026-07-08T03:20:19Z
  audio: Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Sequence No. 4: Recordare, Jesu pie (Soprano, Mezzo-soprano, Tenor, Baritone)
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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: Time Signature
    additional property: Danceability
    additional property: Energy
    additional property: Speechiness
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name
track: Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Offertory No. 1: Domine Jesu Christe (Chorus)
track: Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Benedictus (Soprano, Mezzo-soprano, Tenor, Baritone)

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Danceability
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Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
type: PropertyValue
value: 0.068

Loudness (dB)
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value: -24.969

Key Name
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value: F

Mode Name
type: PropertyValue
value: Major

Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Offertory No. 1: Domine Jesu Christe (Chorus)
type: MusicRecording
duration: PT3M20S
duration ms: 200520
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Olga Pasichnyk
by artist: Anna Lubanska
by artist: Krzysztof Szmyt
by artist: Krzysztof Borysiewicz
by artist: Sinfonia Amabile Choir
by artist: Sinfonia Amabile Orchestra
by artist: Piotr Wajrak
in album: Mozart: Requiem in D Minor, K. 626
  type: MusicAlbum
  date published: 2015-11-06
popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: PLA161521009
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T20:45:09+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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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/PLA161521009
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T21:00:46Z
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 0xdb59abce1206a405d168ec4d414097ea12fe2011f9a48a27bdbe7db311c6190b. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/PLA161521009.
  date published: 2026-07-30T21:00:46Z
audio: Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Offertory No. 1: Domine Jesu Christe (Chorus)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.905
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.308
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Mode Name
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Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Benedictus (Soprano, Mezzo-soprano, Tenor, Baritone)
type: MusicRecording
duration: PT5M19S
duration ms: 319573
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Olga Pasichnyk
by artist: Anna Lubanska
by artist: Krzysztof Szmyt
by artist: Krzysztof Borysiewicz
by artist: Sinfonia Amabile Choir
by artist: Sinfonia Amabile Orchestra
by artist: Piotr Wajrak
in album: Mozart: Requiem in D Minor, K. 626
  type: MusicAlbum
  date published: 2015-11-06
popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: PLA161521012
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:42:13+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960468
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA161521012
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T21:25:57Z
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 0xbcae1112b50fc153699b622f25f421054a1b3a0cb3e63e4409a888d5f34947ed. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/PLA161521012.
  date published: 2026-07-31T21:25:57Z
audio: Requiem in D Minor, K. 626 (Completed by F.X. Süssmayr): Benedictus (Soprano, Mezzo-soprano, Tenor, Baritone)
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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: Loudness (dB)
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