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description: Marcel Cordes (born Kurt Schumacher, 11 March 1920 – 26 November 1992) was a German baritone in opera and concert. He was regarded as a leading baritone of German origin for Italian opera in the 1950s
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  subject of: OpenTimestamps Proof of Existence
  audio: Schumann: Symphony No. 3 in E-Flat Major, Op. 97 "Rhenish": III. Nicht schnell
track: Schumann: Symphony No. 3 in E-Flat Major, Op. 97 "Rhenish": IV. Feierlich
track: Schumann: Symphony No. 3 in E-Flat Major, Op. 97 "Rhenish": V. Lebhaft
track: Tchaikovsky: Swan Lake, Op. 20: Introduction
track: Tchaikovsky: Swan Lake, Op. 20, Act 1: No. 2, Waltz
track: Tchaikovsky: Swan Lake, Op. 20, Act 2: No. 10, Scene. Moderato
track: Tchaikovsky: Swan Lake, Op. 20, Act 2: No. 13d, Dance of the Swans. Dance of the Little Swans
track: Beethoven: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
track: Mozart: Piano Concerto No. 21 in C Major, K. 467: II. Andante

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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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

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

Schumann: Symphony No. 3 in E-Flat Major, Op. 97 "Rhenish": III. Nicht schnell
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Schumann: Symphony No. 3 in E-Flat Major, Op. 97 "Rhenish": IV. Feierlich
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by artist: Staatskapelle Dresden
by artist: Wolfgang Sawallisch
in album: The Symphonic & Choral Legacy
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genre: classical
genre: classical-piano
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additional property: OTSTimestamp
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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
audio: Schumann: Symphony No. 3 in E-Flat Major, Op. 97 "Rhenish": IV. Feierlich
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Schumann: Symphony No. 3 in E-Flat Major, Op. 97 "Rhenish": V. Lebhaft
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by artist: Staatskapelle Dresden
by artist: Wolfgang Sawallisch
in album: The Symphonic & Choral Legacy
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  date published: 2024-06-16
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: 2026-07-08T03:20:19Z
audio: Schumann: Symphony No. 3 in E-Flat Major, Op. 97 "Rhenish": V. Lebhaft
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Tchaikovsky: Swan Lake, Op. 20: Introduction
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Wolfgang Sawallisch
by artist: Philadelphia Orchestra
in album: The Symphonic & Choral Legacy
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additional property: CopyrightID
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
audio: Tchaikovsky: Swan Lake, Op. 20: Introduction
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Tchaikovsky: Swan Lake, Op. 20, Act 1: No. 2, Waltz
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duration: PT7M26S
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Wolfgang Sawallisch
by artist: Philadelphia Orchestra
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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
audio: Tchaikovsky: Swan Lake, Op. 20, Act 1: No. 2, Waltz
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Tchaikovsky: Swan Lake, Op. 20, Act 2: No. 10, Scene. Moderato
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by artist: Wolfgang Sawallisch
by artist: Philadelphia Orchestra
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additional property: OTSTimestamp
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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
audio: Tchaikovsky: Swan Lake, Op. 20, Act 2: No. 10, Scene. Moderato
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Tchaikovsky: Swan Lake, Op. 20, Act 2: No. 13d, Dance of the Swans. Dance of the Little Swans
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Beethoven: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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by artist: Wolfgang Sawallisch
by artist: Royal Concertgebouw Orchestra
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additional property: OTSTimestamp
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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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Mozart: Piano Concerto No. 21 in C Major, K. 467: II. Andante
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by artist: Wolfgang Sawallisch
by artist: Philharmonia Orchestra
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genre: classical-era
genre: classical-piano
genre: opera
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additional property: OTSTimestamp
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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
audio: Mozart: Piano Concerto No. 21 in C Major, K. 467: II. Andante
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E. T. A. Hoffmann: Undine
type: MusicAlbum
date published: 2014-09-05

Humperdinck: Hänsel und Gretel
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
  audio: Hänsel und Gretel: Vorspiel
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Im Reich der Operette, Vol. 5 (Favoriten - Raritäten - Entdeckungen)
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date published: 2012-02-08

Offenbach 50
type: MusicAlbum
date published: 2017-03-27

Operetta Arias
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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: Gräfin Mariza: Wenn es Abend wird (Grüß mir mein Wien)
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  by artist: Südfunk-Unterhaltungsorchester
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T15:20:15Z
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Brothers Grimm's Fairy Tales in Operas: Die Kluge
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Orff: Der Mond - Die Kluge
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T18:48:12Z
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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: Instrumentalness
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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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track: Orff: Der Mond: "So brachte Petrus die Toten zur Ruh" (Erzähler)
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  duration: PT1M48S
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  by artist: Carl Orff
  by artist: Rudolf Christ
  in album: Orff: Der Mond - Die Kluge
    type: MusicAlbum
    date published: 1998
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    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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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/GBAYC5700100
  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 0xc6701371223c6b2f11d529a75a3288cc61dfc3a2217e78e6be8c7a1d2d202ae2. 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/GBAYC5700100.
    date published: 2026-07-08T03:20:19Z
  audio: Orff: Der Mond: "So brachte Petrus die Toten zur Ruh" (Erzähler)
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    additional property: Instrumentalness
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track: Orff: Der Mond: "Ach, da hängt ja der Mond!" (Kleines Kind, Chor)
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  duration: PT3M40S
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  by artist: Carl Orff
  by artist: Wolfgang Sawallisch
  by artist: Philharmonia Chorus
  by artist: Teresa Holloway
  by artist: Philharmonia Orchestra
  in album: Orff: Der Mond - Die Kluge
    type: MusicAlbum
    date published: 1998
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Orff: Der Mond: "Ach, da hängt ja der Mond!" (Kleines Kind, Chor)

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960117

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC5700101

OTSTimestamp
type: PropertyValue
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34049d8c9d3b8f564a0e0a64b5d5666e436d4a7d86dc8445c75879a09a4bc115. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBAYC5700101.
date published: 2026-07-29T14:28:24Z

Orff: Der Mond: "Ach, da hängt ja der Mond!" (Kleines Kind, Chor)
type: AudioObject
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
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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: Instrumentalness
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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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additional property: Key Name
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additional property: Mode Name
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Orff: Die Kluge & Der Mond
type: MusicAlbum
date published: 1998-08-01
track: Orff: Die Kluge: "Oh hätt' ich meiner Tochter nur geglaubt!" (Bauer)
  type: MusicRecording
  duration: PT5M2S
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  explicit: false
  by artist: Carl Orff
  by artist: Wolfgang Sawallisch
  by artist: Gottlob Frick
  by artist: Philharmonia Orchestra
  in album: Orff: Die Kluge & Der Mond
    type: MusicAlbum
    date published: 1998-08-01
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  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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    value: https://explorer.copyrightchains.com/tx/0x9bcfd1ceda6f289be602ce9f7d4099a530e97d42dd39a6f96fb698ac2235d9a9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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    value: https://blockstream.info/api/block-height/960422
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC5600170
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T15:27:29Z
  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 0x9bcfd1ceda6f289be602ce9f7d4099a530e97d42dd39a6f96fb698ac2235d9a9. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/GBAYC5600170.
    date published: 2026-07-31T15:27:29Z
  audio: Orff: Die Kluge: "Oh hätt' ich meiner Tochter nur geglaubt!" (Bauer)
    type: AudioObject
    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
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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: Instrumentalness
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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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    additional property: Key Name
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    additional property: Mode Name
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track: Orff: Der Mond: "So brachte Petrus die Toten zur Ruh" (Erzähler)
  type: MusicRecording
  duration: PT1M48S
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  by artist: Carl Orff
  by artist: Rudolf Christ
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    type: MusicAlbum
    date published: 1998-08-01
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  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
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC5700100
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0xc6701371223c6b2f11d529a75a3288cc61dfc3a2217e78e6be8c7a1d2d202ae2. 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/GBAYC5700100.
    date published: 2026-07-02T03:55:08Z
  audio: Orff: Der Mond: "So brachte Petrus die Toten zur Ruh" (Erzähler)
    type: AudioObject
    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
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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: Instrumentalness
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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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    additional property: Key Name
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    additional property: Mode Name
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track: Orff: Der Mond: "Ach, da hängt ja der Mond!" (Kleines Kind, Chor)
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  by artist: Teresa Holloway
  by artist: Philharmonia Orchestra
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    type: MusicAlbum
    date published: 1998-08-01
  isrc code: GBAYC5700101
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Orff: Der Mond: "Ach, da hängt ja der Mond!" (Kleines Kind, Chor)

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960344

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC5700101

OTSTimestamp
type: PropertyValue
value: 2026-07-31T04:14:58Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34049d8c9d3b8f564a0e0a64b5d5666e436d4a7d86dc8445c75879a09a4bc115. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBAYC5700101.
date published: 2026-07-31T04:14:58Z

Orff: Der Mond: "Ach, da hängt ja der Mond!" (Kleines Kind, Chor)
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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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: Instrumentalness
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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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additional property: Key Name
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additional property: Mode Name
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Orff: Carmina Burana; Die Kluge (Highlights)
type: MusicAlbum
date published: 2014-01-14

Es war einmal... Grimms Märchen in der Musik
type: MusicAlbum
date published: 2012-10-22

Fritz Wunderlich - Der große deutsche Tenor
type: MusicAlbum
date published: 1990-10-02
track: Handel: Serse, HWV 40, Act 1, Scene 1: Arioso. "Ombra mai fù" (Serse)
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  duration: PT3M7S
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  by artist: Bavarian State Orchestra
  by artist: Hans Müller-Kray
  in album: Fritz Wunderlich - Der große deutsche Tenor
    type: MusicAlbum
    date published: 1990-10-02
  popularity: 7
  genre: classical
  genre: opera
  genre: early-music
  genre: baroque
  genre: english-baroque
  genre: german-baroque
  genre: choral
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    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: OTSBitcoinBlock
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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/DEA340702058
  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 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 0x240f918bf0de1c26875f8122cb31b96a977d3c0a8e9b5ba1623404ed682c5673. 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/DEA340702058.
    date published: 2026-07-08T03:20:19Z
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Liveness
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    additional property: Valence (Positivity)
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Icon: Fritz Wunderlich
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date published: 2010-08-09
track: Martha, Act III: "Ach, so fromm"
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  by artist: Berliner Symphoniker
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    date published: 2026-07-08T03:53:27Z
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Wunderlich, Fritz: Rarities From Opera and Operetta
type: MusicAlbum
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Fritz Wunderlich: Die Electrola-Querschnitte 1960-63
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Leoncavallo: Der Bajazzo (Pagliacci - Sung in German)
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Meister der Operette: Johann Strauss
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Cherubini: Der Wasserträger (Sung in German)
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Mozart Contemporaries
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Das Rheingold (Recorded 1962)
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Carl Orff: Die Kluge
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Meister der Operette: Eduard Künneke
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Operetten Schätze, Vol. 2
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Orff: Carmina Burana
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Feursnot/Guntram
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Carmina Burana
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Classical Music - Choral
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-08-01T04:30:37Z
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Puccini: Der Mantel
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Wagner: Gotterdamerung (Recorded 1962)
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Smetana: The Bartered Bride
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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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Künneke: Liselott
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Milestones of a Legendary Conductor: Wolfgang Sawallisch, Vol. 10
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Cornelius: Der Barbier von Bagdad
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Dokumente einer Sängerkarriere - Marcel Cordes
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Orff: Die Kluge
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Gluck,: Iphigenia auf Tauris
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Holzschuhtanz: Zar und Zimmermann - Highlights (Inspiration)
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    date published: 2026-07-29T19:35:34Z
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Wagner: Tannhäuser
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