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genre: classical
genre: requiem
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subject of: OpenTimestamps Proof of Existence
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album: The Blackest Bass: Gottlob Frick Portrait
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  date published: 2019-05-17
  track: Die Entführung aus dem Serail, K. 384: Wer ein Liebchen hat gefunden
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      date published: 2019-05-17
    popularity: 3
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    genre: classical-era
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    genre: opera
    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: 2026-07-08T03:20:19Z
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  track: Die Zauberflöte, K. 620: O Isis und Osiris
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-31T00:26:26Z
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  track: Jägers Liebeslied (Arr. for Bass & Orchestra)
album: Händel: Der Messias, HWV 56
album: Jesu, meine Freude: Greatest Choral Masterpieces
track: Schubert: Deutsche Messe, D. 872: No. 5, Zum Sanctus

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Jägers Liebeslied (Arr. for Bass & Orchestra)
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by artist: Unknown Artist
by artist: Willy Sommerfeld
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  date published: 2019-05-17
popularity: 1
genre: classical
genre: opera
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T21:25:57Z
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Händel: Der Messias, HWV 56
type: MusicAlbum
date published: 2014-09-29
track: Der Messias, HWV 56, Pt. 1: No. 4, Denn die Herrlichkeit Gottes des Herrn
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  genre: early-music
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  genre: english-baroque
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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Jesu, meine Freude: Greatest Choral Masterpieces
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T09:57:33Z
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Schubert: Deutsche Messe, D. 872: No. 5, Zum Sanctus
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA348801333
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
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 0x71198d65b12ef74d5a9976b1a43d5e8d4d6bd15deedf443d7458056ae8cf6a63. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA348801333.
  date published: 2026-06-13T13:32:09Z
audio: Schubert: Deutsche Messe, D. 872: No. 5, Zum Sanctus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.909
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.158
  additional property: Energy
    type: PropertyValue
    value: 0.022
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.681
  additional property: Liveness
    type: PropertyValue
    value: 0.142
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.065
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.843
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major