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    subject of: OpenTimestamps Proof of Existence
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album: Greatest Violin Concertos
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album: Realms of Gold: The Recorded Legacy of American Concert Pianist William Corbet-Jones, Vol. 1 & 2
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Brandenburg Concerto No. 3 in G, BWV 1048: 1. (without tempo indication)
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  date published: 2026-07-30T07:28:30Z
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Brandenburg Concerto No. 3 in G, BWV 1048: 2.Allegro
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  date published: 2026-07-30T20:09:33Z
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Brandenburg Concerto No 4 in G Major, BWV 1049: Presto
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Cello Sonata in E Minor, Op. 14 No. 5, RV 40: I. Largo
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duration ms: 165533
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by artist: Antonio Vivaldi
by artist: Claude Starck
by artist: Isolde Ahlgrimm
by artist: Mischa Frey
in album: Vivaldi: Cello Sonatas
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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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additional property: ContentHash
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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: Cello Sonata in E Minor, Op. 14 No. 5, RV 40: I. Largo
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Cello Sonata in A Minor, Op. 14 No. 3, RV 43: II. Allegro
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duration: PT2M58S
duration ms: 178000
explicit: false
by artist: Antonio Vivaldi
by artist: Claude Starck
by artist: Isolde Ahlgrimm
by artist: Mischa Frey
in album: Vivaldi: Cello Sonatas
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isrc code: CH0041600940
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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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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Cello Sonata in A Minor, Op. 14 No. 3, RV 43: II. Allegro
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Cello Sonata in B-Flat Major, Op. 14 No. 1, RV 47: I. Largo
type: MusicRecording
duration: PT3M5S
duration ms: 185693
explicit: false
by artist: Antonio Vivaldi
by artist: Claude Starck
by artist: Isolde Ahlgrimm
by artist: Mischa Frey
in album: Vivaldi: Cello Sonatas
  type: MusicAlbum
  date published: 2019-09-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d23083288fb747774a96714293e5ede46022008e2002da7a66a893b2f4ed1c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH0041600850.
  date published: 2026-07-31T02:19:15Z
audio: Cello Sonata in B-Flat Major, Op. 14 No. 1, RV 47: I. Largo
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isrc code: CH0041600850
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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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

Cello Sonata in B-Flat Major, Op. 14 No. 1, RV 47: II. Allegro
type: MusicRecording
duration: PT2M33S
duration ms: 153866
explicit: false
by artist: Antonio Vivaldi
by artist: Claude Starck
by artist: Isolde Ahlgrimm
by artist: Mischa Frey
in album: Vivaldi: Cello Sonatas
  type: MusicAlbum
  date published: 2019-09-06
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfee42eb8614ad0f0a83d6dae705462aaa5f6a566f24937a099b6aaea08ded7a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/CH0041600860.
  date published: 2026-07-31T15:59:18Z
audio: Cello Sonata in B-Flat Major, Op. 14 No. 1, RV 47: II. Allegro
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additional property: CopyrightID
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
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Cello Sonata in E Minor, Op. 14 No. 5, RV 40: II. Allegro
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duration: PT2M33S
duration ms: 153760
explicit: false
by artist: Antonio Vivaldi
by artist: Claude Starck
by artist: Isolde Ahlgrimm
by artist: Mischa Frey
in album: Vivaldi: Cello Sonatas
  type: MusicAlbum
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690ed932e124826edd1a48fef1e82c322e5eaf5244d7978ced03b1107eb41f69. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0041601020.
  date published: 2026-07-31T17:29:52Z
audio: Cello Sonata in E Minor, Op. 14 No. 5, RV 40: II. Allegro
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additional property: CopyrightID
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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
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Cello Sonata in A Minor, Op. 14 No. 3, RV 43: I. Largo
type: MusicRecording
duration: PT3M0S
duration ms: 180600
explicit: false
by artist: Antonio Vivaldi
by artist: Claude Starck
by artist: Isolde Ahlgrimm
by artist: Mischa Frey
in album: Vivaldi: Cello Sonatas
  type: MusicAlbum
  date published: 2019-09-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5da6a672b8b2d719b3c9508b5219706751639f24de35fb97e318bdc20048c83. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/CH0041600930.
  date published: 2026-08-01T00:10:46Z
audio: Cello Sonata in A Minor, Op. 14 No. 3, RV 43: I. Largo
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additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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Speechiness
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Acousticness
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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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Key Name
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Mode Name
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Orchestral Suite No. 3 in D Major, BWV 1068: III. Gavotte I-II
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duration: PT4M3S
duration ms: 243333
explicit: false
by artist: Johann Sebastian Bach
by artist: Münchener Bach-Orchester
by artist: Karl Richter
in album: Bach, J.S.: Brandenburg Concertos Nos.2, 3 & 4; Orchestral Suite No.3, BWV 1068
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popularity: 2
genre: classical
genre: classical-piano
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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
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subject of: OpenTimestamps Proof of Existence
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track: Flute Concerto in F Major, RV 434, Op. 10 No. 5: II. Largo e cantabile
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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: Sonata For Cello And Continuo In E Minor, R.40 - Arr. by Paul Bazelaire: 1. Large
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Sonata For Cello And Continuo In E Minor, R.40 - Arr. by Paul Bazelaire: 3. Lent et expressif (alla siciliana)
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duration: PT3M52S
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by artist: Antonio Vivaldi
by artist: Pierre Fournier
by artist: Festival Strings Lucerne
by artist: Rudolf Baumgartner
in album: "Baroque Festival" - Festival Strings Lucerne
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:53:57Z
audio: Sonata For Cello And Continuo In E Minor, R.40 - Arr. by Paul Bazelaire: 3. Lent et expressif (alla siciliana)
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Sonata For Cello And Continuo In E Minor, R.40 - Arr. by Vincent d'Indy: 2. Allègre
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by artist: Antonio Vivaldi
by artist: Pierre Fournier
by artist: Festival Strings Lucerne
by artist: Rudolf Baumgartner
in album: "Baroque Festival" - Festival Strings Lucerne
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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
audio: Sonata For Cello And Continuo In E Minor, R.40 - Arr. by Vincent d'Indy: 2. Allègre
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Brandenburg Concerto No. 1 in F, BWV 1046: 1. (Allegro)
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by artist: Johann Sebastian Bach
by artist: Festival Strings Lucerne
by artist: Rudolf Baumgartner
by artist: Wolfgang Schneiderhan
by artist: Helmut Winschermann
by artist: Egon Parolari
by artist: W. Huniler
by artist: Cesare Esposito
by artist: Günther Schlund
by artist: H. Bouchet
in album: "Baroque Festival" - Festival Strings Lucerne
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genre: classical
genre: classical-piano
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Brandenburg Concerto No. 1 in F, BWV 1046: 1. (Allegro)
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Brandenburg Concerto No. 1 in F, BWV 1046: 2. Adagio
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duration: PT4M21S
duration ms: 261893
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by artist: Johann Sebastian Bach
by artist: Festival Strings Lucerne
by artist: Rudolf Baumgartner
by artist: Wolfgang Schneiderhan
by artist: Helmut Winschermann
by artist: Egon Parolari
by artist: W. Huniler
by artist: Cesare Esposito
by artist: Günther Schlund
by artist: H. Bouchet
in album: "Baroque Festival" - Festival Strings Lucerne
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genre: classical
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Brandenburg Concerto No. 1 in F, BWV 1046: 2. Adagio
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Brandenburg Concerto No. 1 in F, BWV 1046: 3. Allegro
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duration: PT4M59S
duration ms: 299400
explicit: false
by artist: Johann Sebastian Bach
by artist: Festival Strings Lucerne
by artist: Rudolf Baumgartner
by artist: Wolfgang Schneiderhan
by artist: Helmut Winschermann
by artist: Egon Parolari
by artist: W. Huniler
by artist: Cesare Esposito
by artist: Günther Schlund
by artist: H. Bouchet
in album: "Baroque Festival" - Festival Strings Lucerne
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genre: classical
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Brandenburg Concerto No. 1 in F, BWV 1046: 3. Allegro
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Symphony No. XX in E minor: 3. Allegro assai
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duration ms: 162000
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by artist: Rudolf Baumgartner
by artist: Festival Strings Lucerne
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Symphony No. XX in E minor: 3. Allegro assai
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Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": I. Allegro non molto - Allegro
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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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Violin Concerto in F Major, Op. 8, No. 3, RV 293 "L'autunno": II. Adagio molto. Ubriachi dormienti
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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
audio: Violin Concerto in F Major, Op. 8, No. 3, RV 293 "L'autunno": II. Adagio molto. Ubriachi dormienti
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Violin Concerto in F Minor, Op. 8, No. 4, RV 297 "L'inverno": II. Largo
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Violin Concerto in F Minor, Op. 8, No. 4, RV 297 "L'inverno": II. Largo
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Pièces de Clavecin en Concert / Troisième Concert: 1. La La Poplinière - Rondement
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Pièces de Clavecin en Concert / Troisième Concert: 1. La La Poplinière - Rondement
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Pièces de Clavecin en Concert / Troisième Concert: 2. La Timide (Rondeau 1 et 2) - Gracieux
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Pièces de Clavecin en Concert / Troisième Concert: 2. La Timide (Rondeau 1 et 2) - Gracieux
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Pièces de Clavecin en Concert / Troisième Concert: 3. 1er Et 2ème Tambourins - Vif
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Pièces de Clavecin en Concert / Troisième Concert: 3. 1er Et 2ème Tambourins - Vif
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Don Quichotte - Suite: 2. Le Reveil de Quixotte
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Don Quichotte - Suite: 2. Le Reveil de Quixotte
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    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.71
  additional property: Energy
    type: PropertyValue
    value: 0.011
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.005
  additional property: Liveness
    type: PropertyValue
    value: 0.073
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.478
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.511
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major