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album: Contrasts
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album: Rietz, Bruch & Weber: The Romantic Clarinet
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  track: Concerto for Clarinet and Orchestra in G Minor, Op. 29: III. Allegro vivace
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  track: Concerto for Clarinet, Viola and Orchestra in E Minor, Op. 88: I. Andante con moto
  track: Concerto for Clarinet, Viola and Orchestra in E Minor, Op. 88: II. Allegro moderato
  track: Concerto for Clarinet, Viola and Orchestra in E Minor, Op. 88: III. Allegro molto
  track: Quintet for Clarinet and String Quartet in B-Flat Major, Op. 34: II. Fantasia. Adagio ma non troppo
album: Felix Mendelssohn & George Enescu: Octets for Strings (Live)
album: Italian Postcards: Wolf – Mozart – Borenstein – Tchaikovsky
album: Telemann: 12 Fantasies for Solo Viola

Concerto for Clarinet, Viola and Orchestra in E Minor, Op. 88: I. Andante con moto
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  date published: 2026-07-08T03:22:41Z
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Concerto for Clarinet, Viola and Orchestra in E Minor, Op. 88: II. Allegro moderato
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  date published: 2026-07-08T03:53:27Z
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Concerto for Clarinet, Viola and Orchestra in E Minor, Op. 88: III. Allegro molto
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  date published: 2026-07-08T08:56:20Z
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Octet in E-Flat Major, Op. 20, MWV R20: I. Allegro moderato, ma con fuoco - Live
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956889
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-06T06:56:49+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ead9a0491dd8f890841ebb97db39587a033938c803c476f3b96a67c1cccec6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEAQ70900183.
  date published: 2026-07-06T07:16:32Z
audio: Octet in E-Flat Major, Op. 20, MWV R20: I. Allegro moderato, ma con fuoco - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 144.289
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.252
  additional property: Energy
    type: PropertyValue
    value: 0.205
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.779
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.878
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.177
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.005
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Octet in E-Flat Major, Op. 20, MWV R20: II. Andante - Live
type: MusicRecording
duration: PT6M34S
duration ms: 394960
explicit: false
by artist: Felix Mendelssohn
by artist: Christian Tetzlaff
by artist: Isabelle Faust
by artist: Lisa Batiashvili
by artist: Antje Weithaas
by artist: Quirine Viersen
by artist: Tanja Tetzlaff
by artist: Rachel Roberts
by artist: Ori Kam
in album: Felix Mendelssohn & George Enescu: Octets for Strings (Live)
  type: MusicAlbum
  date published: 2009-08-03
popularity: 2
genre: classical
genre: early-romantic-era
genre: german-romanticism
isrc code: DEAQ70900184
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:31:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2f55fb7680b52f76e30097069f2770d38b56ce450d150b4d5f1abe75468ebaac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ70900184
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f55fb7680b52f76e30097069f2770d38b56ce450d150b4d5f1abe75468ebaac. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ70900184.
  date published: 2026-07-08T03:22:41Z
audio: Octet in E-Flat Major, Op. 20, MWV R20: II. Andante - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 164.953
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.137
  additional property: Energy
    type: PropertyValue
    value: 0.041
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.899
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.874
  additional property: Liveness
    type: PropertyValue
    value: 0.077
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.058
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.288
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Octet in E-Flat Major, Op. 20, MWV R20: IV. Presto - Live
type: MusicRecording
duration: PT6M44S
duration ms: 404760
explicit: false
by artist: Felix Mendelssohn
by artist: Lisa Batiashvili
by artist: Isabelle Faust
by artist: Christian Tetzlaff
by artist: Antje Weithaas
by artist: Ori Kam
by artist: Rachel Roberts
by artist: Tanja Tetzlaff
by artist: Quirine Viersen
in album: Felix Mendelssohn & George Enescu: Octets for Strings (Live)
  type: MusicAlbum
  date published: 2009-08-03
popularity: 4
genre: classical
genre: early-romantic-era
genre: german-romanticism
isrc code: DEAQ70900186
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:59:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9f7d6c4d9cd0601c84d199150f438b242e8f2df2f8c4668104a80b30b2519169
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ70900186
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7d6c4d9cd0601c84d199150f438b242e8f2df2f8c4668104a80b30b2519169. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEAQ70900186.
  date published: 2026-07-08T03:53:27Z
audio: Octet in E-Flat Major, Op. 20, MWV R20: IV. Presto - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 150.63
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.307
  additional property: Energy
    type: PropertyValue
    value: 0.487
  additional property: Speechiness
    type: PropertyValue
    value: 0.089
  additional property: Acousticness
    type: PropertyValue
    value: 0.854
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.853
  additional property: Liveness
    type: PropertyValue
    value: 0.19
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.336
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.918
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Octet in E-Flat Major, Op. 20, MWV R20: III. Scherzo (Allegro leggierissimo) - Live
type: MusicRecording
duration: PT4M19S
duration ms: 259426
explicit: false
by artist: Felix Mendelssohn
by artist: Tanja Tetzlaff
by artist: Rachel Roberts
by artist: Ori Kam
by artist: Lisa Batiashvili
by artist: Isabelle Faust
by artist: Christian Tetzlaff
by artist: Antje Weithaas
by artist: Quirine Viersen
in album: Felix Mendelssohn & George Enescu: Octets for Strings (Live)
  type: MusicAlbum
  date published: 2009-08-03
popularity: 4
genre: classical
genre: early-romantic-era
genre: german-romanticism
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94d4f731d5343db3c4fe989fad07ce3029bce7bf24c23a98b3f19a6a2746253. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEAQ70900185.
  date published: 2026-07-30T03:35:13Z
audio: Octet in E-Flat Major, Op. 20, MWV R20: III. Scherzo (Allegro leggierissimo) - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 150.163
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.375
  additional property: Energy
    type: PropertyValue
    value: 0.203
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.803
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.878
  additional property: Liveness
    type: PropertyValue
    value: 0.262
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.362
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.119
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DEAQ70900185
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960203
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T03:35:13+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ70900185
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960203
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960203
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T03:35:13+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Fantasia No. 1 in B-Flat Major, TWV 40:14: I. Largo
type: MusicRecording
duration: PT2M37S
duration ms: 157626
explicit: false
by artist: Georg Philipp Telemann
by artist: Ori Kam
in album: Telemann: 12 Fantasies for Solo Viola
  type: MusicAlbum
  date published: 2012-04-20
popularity: 1
isrc code: DES380020535
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T10:32:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3193b4fcaa84ebbd12d79a3f9dabe50e0d8faab2e8406eb471b59ffec34439c5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380020535
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3193b4fcaa84ebbd12d79a3f9dabe50e0d8faab2e8406eb471b59ffec34439c5. 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/DES380020535.
  date published: 2026-07-08T03:20:19Z
audio: Fantasia No. 1 in B-Flat Major, TWV 40:14: I. Largo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.883
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.286
  additional property: Energy
    type: PropertyValue
    value: 0.027
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.102
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.216
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.179
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Fantasia No. 1 in B-Flat Major, TWV 40:14: II. Allegro
type: MusicRecording
duration: PT1M50S
duration ms: 110466
explicit: false
by artist: Georg Philipp Telemann
by artist: Ori Kam
in album: Telemann: 12 Fantasies for Solo Viola
  type: MusicAlbum
  date published: 2012-04-20
popularity: 1
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa8d3b18dad65a8299c5b7c18361619d74b64eb325ff1df4989a0758b1c9203. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380020536.
  date published: 2026-07-31T15:20:15Z
audio: Fantasia No. 1 in B-Flat Major, TWV 40:14: II. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.566
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.57
  additional property: Energy
    type: PropertyValue
    value: 0.1
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.64
  additional property: Liveness
    type: PropertyValue
    value: 0.288
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.936
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.737
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: DES380020536
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960418
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T15:20:15+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380020536
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Fantasia No. 1 in B-Flat Major, TWV 40:14: III. Grave
type: MusicRecording
duration: PT1M38S
duration ms: 98720
explicit: false
by artist: Georg Philipp Telemann
by artist: Ori Kam
in album: Telemann: 12 Fantasies for Solo Viola
  type: MusicAlbum
  date published: 2012-04-20
popularity: 1
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faedcb6b74987300e3b1cd33663c5192153ad82b34c9e43b99b7bea55049a80. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380020537.
  date published: 2026-07-31T12:24:41Z
audio: Fantasia No. 1 in B-Flat Major, TWV 40:14: III. Grave
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.404
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.192
  additional property: Energy
    type: PropertyValue
    value: 0.023
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.181
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.109
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.365
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DES380020537
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960397
additional property: BitcoinTime
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additional property: OTSTimestamp
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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

Fantasia No. 2 in G Major, TWV 40:15: I. Largo
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duration: PT1M56S
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explicit: false
by artist: Georg Philipp Telemann
by artist: Ori Kam
in album: Telemann: 12 Fantasies for Solo Viola
  type: MusicAlbum
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popularity: 0
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T22:27:44Z
audio: Fantasia No. 2 in G Major, TWV 40:15: I. Largo
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additional property: OTSTimestamp
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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

Fantasia No. 7 in E-Flat Major, TWV 40:20: I. Dolce
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duration: PT2M7S
duration ms: 127133
explicit: false
by artist: Georg Philipp Telemann
by artist: Ori Kam
in album: Telemann: 12 Fantasies for Solo Viola
  type: MusicAlbum
  date published: 2012-04-20
popularity: 1
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T21:25:57Z
audio: Fantasia No. 7 in E-Flat Major, TWV 40:20: I. Dolce
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Quintet for Clarinet and String Quartet in B-Flat Major, Op. 34: II. Fantasia. Adagio ma non troppo
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duration ms: 279706
explicit: false
by artist: Carl Maria von Weber
by artist: Gregor Bühl
by artist: Sinfonia Varsovia
in album: Rietz, Bruch & Weber: The Romantic Clarinet
  type: MusicAlbum
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popularity: 0
genre: classical
genre: opera
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Quintet for Clarinet and String Quartet in B-Flat Major, Op. 34: II. Fantasia. Adagio ma non troppo
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track: Octet in E-Flat Major, Op. 20, MWV R20: I. Allegro moderato, ma con fuoco - Live
track: Octet in E-Flat Major, Op. 20, MWV R20: II. Andante - Live
track: Octet in E-Flat Major, Op. 20, MWV R20: IV. Presto - Live
track: Octet in C Major, Op. 7: I. Très modéré - Live
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  by artist: Gustav Rivinius
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  by artist: Antje Weithaas
  by artist: Kathy Gowers
  by artist: Rachel Roberts
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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  by artist: Christian Tetzlaff
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  popularity: 3
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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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track: Octet in C Major, Op. 7: III. Lentement - Live
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  subject of: OpenTimestamps Proof of Existence
  audio: Octet in C Major, Op. 7: III. Lentement - Live
track: Octet in C Major, Op. 7: IV. Mouvement de valse bien rythmée - Live
track: Octet in E-Flat Major, Op. 20, MWV R20: III. Scherzo (Allegro leggierissimo) - Live

Antoine Tamestit
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Rachel Roberts
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Antje Weithaas
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Christian Tetzlaff
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Isabelle Faust
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Kathy Gowers
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Felix Mendelssohn & George Enescu: Octets for Strings (Live)
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda539a2444703440e064bdf5b3e18d287219ac09177d4663b0fb5636d1470d. 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/DEAQ70900189.
date published: 2026-07-08T03:20:19Z

Octet in C Major, Op. 7: III. Lentement - Live
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Octet in C Major, Op. 7: IV. Mouvement de valse bien rythmée - Live
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type: MusicAlbum
date published: 2020-11-20

Telemann: 12 Fantasies for Solo Viola
type: MusicAlbum
date published: 2012-04-20
track: Fantasia No. 1 in B-Flat Major, TWV 40:14: I. Largo
track: Fantasia No. 1 in B-Flat Major, TWV 40:14: II. Allegro
track: Fantasia No. 1 in B-Flat Major, TWV 40:14: III. Grave
track: Fantasia No. 2 in G Major, TWV 40:15: I. Largo
track: Fantasia No. 7 in E-Flat Major, TWV 40:20: I. Dolce