Gewandhaus Quartet
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genre: chamber music
description: The Gewandhaus Quartet (German: Gewandhaus-Quartett) is a string quartet based in Leipzig. It was founded in 1808 by members of the Gewandhaus Orchester, as one of the first professional quartets in t
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album: Dittersdorf: String Quartets Nos. 1-6
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album: Breakfast Classics: 40 Most Beautiful String Sounds For Your Sunday Breakfast
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album: Mendelssohn-Bartholdy: Sämtliche Streichquartette, Vol. 2
album: Mendelssohn Bartholdy: Sämtliche Streichquartette, Vol. 4.
album: Mendelssohn Bartholdy: Sämtliche Streichquartette, Vol. 3.
album: Mendelssohn Bartholdy: Sämtliche Streichquartette, Vol. 1.
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album: Franz Joseph Haydn: Gewandhaus-Quartett
album: Beethoven: Die Streichquartette, Vol. 9.
album: Beethoven: Die Streichquartette, Vol. 8.
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album: Beethoven: Die Streichquartette, Vol. 3.
album: Beethoven: Die Streichquartette, Vol. 2.
album: Beethoven: Die Streichquartette, Vol. 10
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Brahms, Chopin, Schubert, Schumann, Spohr, Mozart, Bartholdy, Haydn & Beethoven: Classical Comfort
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    date published: 2026-07-31T09:09:19Z
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track: Streichquartett d-Moll op. 76 Nr. 2 Hob. III:76 "Quintenquartett": II. Andante o più tosto allegretto
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  by artist: Gewandhaus Quartet
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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 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 0x23c70613adf829da756781ed6f697e444928b865f5c50527f2c4bb4fd8d58506. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU241020663 — a six-check JSON result.
    date published: 2026-07-08T03:22:41Z
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  additional property: OTSVerificationAPI
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  subject of: OpenTimestamps Proof of Existence
  audio: Streichquartett d-Moll op. 76 Nr. 2 Hob. III:76 "Quintenquartett": IV. Finale. Vivace assai
track: Streichquartett C-Dur op. 76 Nr. 3 Hob. III:77 "Kaiserquartett": I. Allegro
track: Streichquartett C-Dur op. 76 Nr. 3 Hob. III:77 "Kaiserquartett": II. Poco adagio, cantabile
track: Streichquartett B-Dur op. 76 Nr. 4 Hob. III:78 "Der Sonnenaufgang": V. Allegro con spirito

OTSVerificationAPI
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OTSTimestamp
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value: 2026-07-08T03:22:41Z

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 0x0c51548a2f562aef8880289767b306e066821e6d0c5a653eabee06d6540fe6d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU241020665 — a six-check JSON result.
date published: 2026-07-08T03:22:41Z

Streichquartett d-Moll op. 76 Nr. 2 Hob. III:76 "Quintenquartett": IV. Finale. Vivace assai
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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: 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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Streichquartett C-Dur op. 76 Nr. 3 Hob. III:77 "Kaiserquartett": I. Allegro
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duration: PT10M3S
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by artist: Joseph Haydn
by artist: Gewandhaus Quartet
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isrc code: DEU241020666
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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 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 0x10e3fc69f89ae62a3a6f530f46a8bf4b425d756ff891d261879e8fa67ac4e712. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU241020666 — a six-check JSON result.
  date published: 2026-07-31T23:30:38Z
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Streichquartett C-Dur op. 76 Nr. 3 Hob. III:77 "Kaiserquartett": II. Poco adagio, cantabile
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by artist: Gewandhaus Quartet
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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 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 0xecce8ac508ca193cd126704b002cf77c9747933d3dd07bbc45d961add20d03f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU241020667 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
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Streichquartett B-Dur op. 76 Nr. 4 Hob. III:78 "Der Sonnenaufgang": V. Allegro con spirito
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by artist: Gewandhaus Quartet
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additional property: CopyrightID
additional property: CopyrightStatus
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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 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
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  date published: 2026-07-31T17:29:52Z
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Mendelssohn: Streichquartett E-Moll Op. 44 Nr. 2 - Schumann: Streichquartett F-Dur Op. 41 Nr. 2.
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date published: 2009-08-16

Mendelssohn-Bartholdy: Sämtliche Streichquartette, Vol. 2
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date published: 2009-01-01

Mendelssohn Bartholdy: Sämtliche Streichquartette, Vol. 4.
type: MusicAlbum
date published: 2009-01-01

Mendelssohn Bartholdy: Sämtliche Streichquartette, Vol. 3.
type: MusicAlbum
date published: 2009-01-01

Mendelssohn Bartholdy: Sämtliche Streichquartette, Vol. 1.
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date published: 2009-01-01

Mendelssohn: Streichquartett Es-Dur Op. 44 Nr. 3 - Schumann: Streichquartett A-Dur Op. 41 Nr. 3.
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Mendelssohn, Schumann: Streichquartette
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Gewandhaus-Quartett in concert
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date published: 2008-01-01

Franz Joseph Haydn: Gewandhaus-Quartett
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date published: 2005-01-01

Beethoven: Die Streichquartette, Vol. 9.
type: MusicAlbum
date published: 2003-01-01

Beethoven: Die Streichquartette, Vol. 8.
type: MusicAlbum
date published: 2003-01-01

Beethoven: Die Streichquartette, Vol. 7.
type: MusicAlbum
date published: 2003-01-01

Beethoven: Die Streichquartette, Vol. 6.
type: MusicAlbum
date published: 2003-01-01

Beethoven: Die Streichquartette, Vol. 5.
type: MusicAlbum
date published: 2003-01-01

Beethoven: Die Streichquartette, Vol. 4
type: MusicAlbum
date published: 2003-01-01

Beethoven: Die Streichquartette, Vol. 3.
type: MusicAlbum
date published: 2003-01-01

Beethoven: Die Streichquartette, Vol. 2.
type: MusicAlbum
date published: 2003-01-01

Beethoven: Die Streichquartette, Vol. 10
type: MusicAlbum
date published: 2003-01-01

Beethoven: Die Streichquartette, Vol. 1.
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date published: 2003-01-01

Beethoven: Die Streichquartette A-Dur Op. 18 Nr. 5 & B-Dur Op. 18 Nr. 6
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date published: 1998-03-09

Maggini: Die Streichquartette
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date published: 1998

Maggini: Canto XIV, XVI & XXI - Urakami
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BEETHOVEN, L. Van: String Quartets Nos. 1-3 (Gewandhaus Quartet)
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Schubert: Trout Quintet
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date published: 1987-01-01
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  by artist: Jürnjakob Timm
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  by artist: Peter Rösel
  by artist: Dietmar Hallmann
  by artist: Rainer Hucke
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  genre: chamber-music
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380014218
  additional property: OTSTimestamp
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    value: 2026-07-31T22:27:44Z
  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 0xaffb505232a5c8f1e4aa646cca17d18d048b61d4b800bcb6f056c6255108efa0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380014218 — a six-check JSON result.
    date published: 2026-07-31T22:27:44Z
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    additional property: Valence (Positivity)
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  by artist: Jürnjakob Timm
  by artist: Karl Suske
  by artist: Peter Rösel
  by artist: Dietmar Hallmann
  by artist: Rainer Hucke
  in album: Schubert: Trout Quintet
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    date published: 1987-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: CopyrightRegisteredAt
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    value: https://explorer.copyrightchains.com/tx/0x1d9c74f7064d445ba4cbd2bc6068c8b664a317ab7dd21a675b93b142bd17a123
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960284
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN060801555
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T17:23:26Z
  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 0x1d9c74f7064d445ba4cbd2bc6068c8b664a317ab7dd21a675b93b142bd17a123. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN060801555 — a six-check JSON result.
    date published: 2026-07-30T17:23:26Z
  audio: Quintet for Piano, Violin, Viola, Violoncello and Double Bass in A Major, Op. 114, D. 667 "The Trout-Quintet": IV. Theme with Variations
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    additional property: Musical Key
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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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Franck: Streichquartett D-Dur
type: MusicAlbum
date published: 1985-07-13

Schumann: Klavierquintett, Op. 44 / Klavierquartett, Op. 47
type: MusicAlbum
date published: 1985-01-01
track: Piano Quintet in E-Flat Major, Op. 44: I. Allegro brillante
  type: MusicRecording
  duration: PT8M34S
  duration ms: 514932
  explicit: false
  by artist: Robert Schumann
  by artist: Peter Rösel
  by artist: Gewandhaus Quartet
  in album: Schumann: Klavierquintett, Op. 44 / Klavierquartett, Op. 47
    type: MusicAlbum
    date published: 1985-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: DES380011840
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T08:15:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbbbdf78d69d8f494d2f36964122edd7a7992c80ed9bf80802de3a1b151aa8b50
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960229
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960229
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011840
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T08:30:10Z
  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 0xbbbdf78d69d8f494d2f36964122edd7a7992c80ed9bf80802de3a1b151aa8b50. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011840 — a six-check JSON result.
    date published: 2026-07-30T08:30:10Z
  audio: Piano Quintet in E-Flat Major, Op. 44: I. Allegro brillante
    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
      type: PropertyValue
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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: Piano Quintet in E-Flat Major, Op. 44: II. In modo d'una marcia
  type: MusicRecording
  duration: PT8M20S
  duration ms: 500160
  explicit: false
  by artist: Robert Schumann
  by artist: Peter Rösel
  by artist: Gewandhaus Quartet
  in album: Schumann: Klavierquintett, Op. 44 / Klavierquartett, Op. 47
    type: MusicAlbum
    date published: 1985-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: DES380011841
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T21:19:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x43413ecfcf3ca400fe31f05957aaeab15d2b0371c852bf77285c0f7c09f3bee5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960317
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011841
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T21:35:24Z
  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 0x43413ecfcf3ca400fe31f05957aaeab15d2b0371c852bf77285c0f7c09f3bee5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011841 — a six-check JSON result.
    date published: 2026-07-30T21:35:24Z
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    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
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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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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track: Piano Quintet in E-Flat Major, Op. 44: III. Scherzo. Molto vivace
  type: MusicRecording
  duration: PT4M34S
  duration ms: 274373
  explicit: false
  by artist: Robert Schumann
  by artist: Peter Rösel
  by artist: Gewandhaus Quartet
  in album: Schumann: Klavierquintett, Op. 44 / Klavierquartett, Op. 47
    type: MusicAlbum
    date published: 1985-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  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: Piano Quintet in E-Flat Major, Op. 44: III. Scherzo. Molto vivace
track: Piano Quintet in E-Flat Major, Op. 44: IV. Allegro ma non troppo
track: Piano Quartet in E-Flat Major, Op. 47: I. Sostenuto assai - Allegro ma non troppo
track: Piano Quartet in E-Flat Major, Op. 47: II. Scherzo. Molto vivace
track: Piano Quartet in E-Flat Major, Op. 47: III. Andante cantabile
track: Piano Quartet in E-Flat Major, Op. 47: IV. Finale. Vivace

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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
type: PropertyValue
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OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960360

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011842

OTSTimestamp
type: PropertyValue
value: 2026-07-31T06:42:11Z

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 0xd35b5fb51c73c61f873224b3d55409b270af8f837962b4ece7a453b1d261e563. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011842 — a six-check JSON result.
date published: 2026-07-31T06:42:11Z

Piano Quintet in E-Flat Major, Op. 44: III. Scherzo. Molto vivace
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
  type: PropertyValue
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additional property: Danceability
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additional property: Energy
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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
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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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Piano Quintet in E-Flat Major, Op. 44: IV. Allegro ma non troppo
type: MusicRecording
duration: PT6M58S
duration ms: 418826
explicit: false
by artist: Robert Schumann
by artist: Peter Rösel
by artist: Gewandhaus Quartet
in album: Schumann: Klavierquintett, Op. 44 / Klavierquartett, Op. 47
  type: MusicAlbum
  date published: 1985-01-01
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DES380011843
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T14:54:44+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xb04eac083221ffdef5f0a1c1a6a7752c6f1837c00b60d1404246c916a025a42c
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011843
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
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 0xb04eac083221ffdef5f0a1c1a6a7752c6f1837c00b60d1404246c916a025a42c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011843 — a six-check JSON result.
  date published: 2026-07-31T15:20:15Z
audio: Piano Quintet in E-Flat Major, Op. 44: IV. Allegro ma non troppo
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  additional property: Mode (Major/Minor)
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Piano Quartet in E-Flat Major, Op. 47: I. Sostenuto assai - Allegro ma non troppo
type: MusicRecording
duration: PT8M45S
duration ms: 525266
explicit: false
by artist: Robert Schumann
by artist: Peter Rösel
by artist: Gewandhaus Quartet
in album: Schumann: Klavierquintett, Op. 44 / Klavierquartett, Op. 47
  type: MusicAlbum
  date published: 1985-01-01
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DES380011844
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T09:18:13+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380011844
additional property: OTSTimestamp
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  value: 2026-07-30T09:57:33Z
additional property: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T09:57:33Z
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Piano Quartet in E-Flat Major, Op. 47: II. Scherzo. Molto vivace
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duration: PT3M34S
duration ms: 214666
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by artist: Peter Rösel
by artist: Gewandhaus Quartet
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genre: classical
genre: classical-piano
genre: chamber-music
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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 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
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  date published: 2026-07-31T15:20:15Z
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Piano Quartet in E-Flat Major, Op. 47: III. Andante cantabile
type: MusicRecording
duration: PT6M20S
duration ms: 380400
explicit: false
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by artist: Peter Rösel
by artist: Gewandhaus Quartet
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genre: classical
genre: classical-piano
genre: chamber-music
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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 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
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  date published: 2026-07-30T18:23:33Z
audio: Piano Quartet in E-Flat Major, Op. 47: III. Andante cantabile
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Piano Quartet in E-Flat Major, Op. 47: IV. Finale. Vivace
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duration: PT7M34S
duration ms: 454826
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by artist: Robert Schumann
by artist: Peter Rösel
by artist: Gewandhaus Quartet
in album: Schumann: Klavierquintett, Op. 44 / Klavierquartett, Op. 47
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genre: classical
genre: classical-piano
genre: chamber-music
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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 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
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  date published: 2026-07-08T03:20:19Z
audio: Piano Quartet in E-Flat Major, Op. 47: IV. Finale. Vivace
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FRANCK, C.: String Quartet (Gewandhaus Quartet) / Violin Sonata [Schunk, A. Schmidt]
type: MusicAlbum
date published: 1985

Haydn: Die sieben letzten Worte unseres Erlösers am Kreuze
type: MusicAlbum
date published: 1982-01-01

Beethoven: Streichquartette No. 1 & 2
type: MusicAlbum
date published: 1967-01-01

Beethoven 2020 – Chamber Music 4: Large Works
type: MusicAlbum
date published: 2019-11-01
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  additional property: OTSVerificationAPI
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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
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    date published: 2026-07-30T21:35:24Z
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track: String Quintet in C Minor, Op. 104: 2. Andante cantabile con variazioni
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  additional property: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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Works for Horn and Strings
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date published: 1993-03-01
track: Horn Quintet in E flat, K.407: 1. Allegro
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  genre: opera
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  genre: concerto
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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 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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    date published: 2026-07-30T20:45:02Z
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    date published: 2026-07-30T03:35:13Z
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  audio: Horn Quintet in E flat, K.407: 3. Allegro
track: Divertimento in E Flat Major, Hob.IV:5
track: Sextet for 2 Horns and String Quartet in E flat, Op. 81b: 1. Allegro con brio
track: Sextet for 2 Horns and String Quartet in E flat, Op. 81b: 2. Adagio
track: Sextet for 2 Horns and String Quartet in E flat, Op. 81b: 3. Rondo (Allegro)
track: Quintet in E, Op. 106: 1. Allegro ma non troppo
track: Quintet in E, Op. 106: 2. Lento
track: Quintet in E, Op. 106: 3. Menuetto (Allegro poco vivo)
track: Quintet in E, Op. 106: 4. Finale (Allegro assai)

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date published: 2026-07-31T02:51:48Z

Horn Quintet in E flat, K.407: 3. Allegro
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Divertimento in E Flat Major, Hob.IV:5
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
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Sextet for 2 Horns and String Quartet in E flat, Op. 81b: 1. Allegro con brio
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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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Sextet for 2 Horns and String Quartet in E flat, Op. 81b: 2. Adagio
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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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Sextet for 2 Horns and String Quartet in E flat, Op. 81b: 3. Rondo (Allegro)
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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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Quintet in E, Op. 106: 1. Allegro ma non troppo
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additional property: 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da4625c08934149e306d5033c9dfcb8e670a21506d310a5b32bc2a92039720c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509109609 — a six-check JSON result.
  date published: 2026-07-31T21:25:57Z
audio: Quintet in E, Op. 106: 1. Allegro ma non troppo
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Quintet in E, Op. 106: 2. Lento
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by artist: Hermann Baumann
by artist: Christian Ockert
by artist: Gewandhaus Quartet
in album: Works for Horn and Strings
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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 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35583526d833b97795f50ea1902340d7477330beca36b644551eecff04c0ab97. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509109610 — a six-check JSON result.
  date published: 2026-07-31T04:14:58Z
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Quintet in E, Op. 106: 3. Menuetto (Allegro poco vivo)
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by artist: Hermann Baumann
by artist: Christian Ockert
by artist: Gewandhaus Quartet
in album: Works for Horn and Strings
  type: MusicAlbum
  date published: 1993-03-01
isrc code: NLA509109611
additional property: CopyrightID
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509109611
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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 0xb4ad9bd561937859a362884536789b492e6e08a37070cdddf3e6d91812a9a0eb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509109611 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
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Quintet in E, Op. 106: 4. Finale (Allegro assai)
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duration: PT5M42S
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by artist: Antoine Reicha
by artist: Hermann Baumann
by artist: Christian Ockert
by artist: Gewandhaus Quartet
in album: Works for Horn and Strings
  type: MusicAlbum
  date published: 1993-03-01
isrc code: NLA509109612
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: 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 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 0x7a7817e376f19b762b38ab294399323ac95f7d5e74b16711e2c535153158368b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509109612 — a six-check JSON result.
  date published: 2026-07-31T17:29:52Z
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True Treasure (In Harmony with Clasical Music)
type: MusicAlbum
date published: 2007-09-28