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  track: Adagio-Allegro-Adagio from Concerto Grosso in G Minor Op. 6, No. 8 - Christmas Concerto
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  track: Lento assai, cantante e tranquillo from String Quartet No. 16 in F Major Op. 135
  track: Adagio from Cello Concerto in C Minor, RV 434
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Piano Trio No. 4 in C Major: Allegro - Adagio - Finale. Quasi presto
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Adagio from Cello Concerto in C Minor, RV 434
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Chamber Concerto in D Major, RV 92: I. Allegro
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Chamber Concerto in D Major, RV 92: II. Larghetto
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  date published: 2026-07-08T03:20:19Z
audio: Chamber Concerto in D Major, RV 92: II. Larghetto
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Chamber Concerto in D Major, RV 92: III. Allegro
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duration: PT3M9S
duration ms: 189466
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by artist: László Kecskeméti
by artist: Attila Falvay
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:20:19Z
audio: Chamber Concerto in D Major, RV 92: III. Allegro
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Chamber Concerto in G Minor, RV 105: III. Allegro molto
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duration: PT3M22S
duration ms: 202960
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by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: László Hadady
by artist: Attila Falvay
by artist: Gyorgy Olajos
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:53:27Z
audio: Chamber Concerto in G Minor, RV 105: III. Allegro molto
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Concerto for Recorder and 2 Violins in A Minor, RV 108: I. Allegro
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duration: PT2M55S
duration ms: 175173
explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: Attila Falvay
by artist: Katalin Parkanyi
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
in album: Vivaldi: Chamber Concertos
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:22:41Z
audio: Concerto for Recorder and 2 Violins in A Minor, RV 108: I. Allegro
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Concerto for Recorder and 2 Violins in A Minor, RV 108: III. Allegro
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explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: Attila Falvay
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T08:56:20Z
audio: Concerto for Recorder and 2 Violins in A Minor, RV 108: III. Allegro
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Concerto for Recorder, Oboe and 2 Violins in C Major, RV 87: I. Allegro
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duration: PT3M11S
duration ms: 191840
explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: László Hadady
by artist: Attila Falvay
by artist: Katalin Parkanyi
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
in album: Vivaldi: Chamber Concertos
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  date published: 2005-12-13
isrc code: HKI190423316
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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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  date published: 2026-07-08T03:20:19Z
audio: Concerto for Recorder, Oboe and 2 Violins in C Major, RV 87: I. Allegro
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Concerto for Recorder, Oboe and 2 Violins in C Major, RV 87: II. Largo
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by artist: Attila Falvay
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by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
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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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additional property: ProofProfileEvidenceStatus
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  date published: 2026-07-08T08:56:20Z
audio: Concerto for Recorder, Oboe and 2 Violins in C Major, RV 87: II. Largo
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Concerto for Recorder, Oboe and 2 Violins in C Major, RV 87: III. Allegro assai
type: MusicRecording
duration: PT2M23S
duration ms: 143000
explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: László Hadady
by artist: Attila Falvay
by artist: Katalin Parkanyi
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
in album: Vivaldi: Chamber Concertos
  type: MusicAlbum
  date published: 2005-12-13
isrc code: HKI190423318
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Concerto for Recorder, Oboe and 2 Violins in C Major, RV 87: III. Allegro assai
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Concerto in G Major, RV 101: I. Allegro
type: MusicRecording
duration: PT4M34S
duration ms: 274026
explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: László Hadady
by artist: Attila Falvay
by artist: Gyorgy Olajos
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
in album: Vivaldi: Chamber Concertos
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  date published: 2005-12-13
isrc code: HKI190423319
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Concerto in G Major, RV 101: I. Allegro
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Chamber Concerto in G Minor, RV 105: I. Allegro
type: MusicRecording
duration: PT3M14S
duration ms: 194493
explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: László Hadady
by artist: Attila Falvay
by artist: Gyorgy Olajos
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
in album: Vivaldi: Chamber Concertos
  type: MusicAlbum
  date published: 2005-12-13
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf061516f59b67745950d57c580102b37a26b8bb542cc1d35218e37a9519474de. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/HKI190423307.
  date published: 2026-07-30T07:28:30Z
audio: Chamber Concerto in G Minor, RV 105: I. Allegro
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: OTSBitcoinBlockVerifyURL
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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

Chamber Concerto in G Minor, RV 105: II. Largo
type: MusicRecording
duration: PT2M8S
duration ms: 128080
explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: László Hadady
by artist: Attila Falvay
by artist: Gyorgy Olajos
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
in album: Vivaldi: Chamber Concertos
  type: MusicAlbum
  date published: 2005-12-13
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a48ae038e18f3a3528076ab1e445a53acfd3a18707ac1de529df19784fed0eb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190423308.
  date published: 2026-07-31T00:26:26Z
audio: Chamber Concerto in G Minor, RV 105: II. Largo
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Acousticness
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additional property: ProofProfileEvidenceStatus
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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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

Concerto in D Major, RV 94: I. Allegro
type: MusicRecording
duration: PT3M35S
duration ms: 215200
explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: László Hadady
by artist: Attila Falvay
by artist: Gyorgy Olajos
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
in album: Vivaldi: Chamber Concertos
  type: MusicAlbum
  date published: 2005-12-13
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931fe42a01007054f6535a9a54d1b8b80aad45e656b2f03b9b769169a8bae109. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/HKI190423310.
  date published: 2026-07-30T09:57:33Z
audio: Concerto in D Major, RV 94: I. Allegro
  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
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.566
  additional property: Energy
    type: PropertyValue
    value: 0.172
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.028
  additional property: Liveness
    type: PropertyValue
    value: 0.272
  additional property: Valence (Positivity)
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    value: 0.653
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.386
  additional property: Key Name
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    value: Major
isrc code: HKI190423310
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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

Concerto in D Major, RV 94: II. Largo
type: MusicRecording
duration: PT3M20S
duration ms: 200600
explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: László Hadady
by artist: Attila Falvay
by artist: Gyorgy Olajos
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
in album: Vivaldi: Chamber Concertos
  type: MusicAlbum
  date published: 2005-12-13
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0549f8c92b32ae383596abab3495dcc49f7b4f55748ee496883b43131e4117d7. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/HKI190423311.
  date published: 2026-07-31T00:58:21Z
audio: Concerto in D Major, RV 94: II. Largo
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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isrc code: HKI190423311
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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

Concerto in D Major, RV 94: III. Allegro
type: MusicRecording
duration: PT3M52S
duration ms: 232600
explicit: false
by artist: Antonio Vivaldi
by artist: László Kecskeméti
by artist: László Hadady
by artist: Attila Falvay
by artist: Gyorgy Olajos
by artist: Gyorgy Kertesz
by artist: Borbála Dobozy
in album: Vivaldi: Chamber Concertos
  type: MusicAlbum
  date published: 2005-12-13
subject of: OpenTimestamps Proof of Existence
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4137e9866015e5e3e7db5487ef83b02b7f7c2ecbbe10b7a0e241b43f8ac633c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HKI190423312.
  date published: 2026-07-30T18:23:33Z
audio: Concerto in D Major, RV 94: III. Allegro
  type: AudioObject
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Concerto for Recorder and 2 Violins in A Minor, RV 108: II. Largo
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Concerto in G Major, RV 101: II. Largo
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Concerto in G Major, RV 101: III. Allegro
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Suite No. 1, "Orientale": I. Okenstamning: Adagio
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Adagio-Allegro-Adagio from Concerto Grosso in G Minor Op. 6, No. 8 - Christmas Concerto
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Lento assai, cantante e tranquillo from String Quartet No. 16 in F Major Op. 135
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Swedish Classical Masterpieces
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Sperger: Works for Horn
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Svenska Klassiska Mästerverk
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Composer’s Portrait, Vol. 1: Eine Deutsch-Jiddische Kantate, Tsuchigumo & Other Works
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Yoga Classical Music
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Beautiful Classical Playlist
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Beruhigende klassische Musik für den Alltag
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Music for your Travel in Italy: Remeber Venice
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50 of the Best: Vivaldi
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Classical Masterpieces
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Classical Baby Music for Sleeping
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Classical Study Time
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Largo
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Berwald: Piano Trio No. 4 / Piano Trio in C Major
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Traditionelle Klassische Musik
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Vivaldi: Chamber Concertos
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Classical Music for Relaxation
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Adagio II: A Special 2 ½ Hour Collection of Orchestral Classics
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Classical Music for Dinner
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Classical Music Love Songs
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Classical Music Playlist for Cooking
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