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genre: chamber music
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subject of: OpenTimestamps Proof of Existence
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album: Lost Is My Quiet: English Music in Purcell's Time
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-31T08:26:41Z
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-30T14:36:16Z
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  track: Lost Is My Quiet for Ever Z. 502
  track: Ode for St. Cecilia: See the Forsaken Fair With Streaming Eyes
  track: Welcome to All the Pleasures, Z. 339: Here the Deities Approve
  track: The Prophetess, or the History of Dioclesian, Z. 627: Since from My Dear Astrea's Sight
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album: Classical for Brain Power
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album: Handel: Complete Sonatas & Works for Violin and Continuo
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album: Leclair: Violin Concertos, Vol. 1
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Come, Ye Sons of Art Away, Z. 323: Strike the Viol
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Lost Is My Quiet for Ever Z. 502
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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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Ode for St. Cecilia: See the Forsaken Fair With Streaming Eyes
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T21:25:57Z
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Welcome to All the Pleasures, Z. 339: Here the Deities Approve
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Symphony No. 101 in D Major, Hob. I:101 'Clock': I. Adagio - Presto
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by artist: English Chamber Orchestra
by artist: Jeffrey Tate
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popularity: 2
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Für Elise, WoO. 59
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by artist: Ludwig van Beethoven
by artist: Moura Lympany
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popularity: 3
genre: classical
genre: classical-piano
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Peer Gynt Suite No.1, Op. 46: I. Prelude 'Morning'
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duration: PT3M50S
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by artist: Berliner Philharmoniker
by artist: Jeffrey Tate
in album: Classical for Brain Power
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popularity: 3
genre: classical
genre: late-romantic-era
genre: norwegian-classical
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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: Peer Gynt Suite No.1, Op. 46: I. Prelude 'Morning'
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Carmen Suite No. 2: II. Habanera
type: MusicRecording
duration: PT2M6S
duration ms: 126880
explicit: false
by artist: Georges Bizet
by artist: Seiji Ozawa
by artist: Orchestre National De France
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popularity: 5
genre: classical
genre: opera
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T09:18:01Z
audio: Carmen Suite No. 2: II. Habanera
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Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
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duration: PT7M46S
duration ms: 466933
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by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
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popularity: 3
genre: classical
genre: classical-era
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genre: opera
genre: chamber-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T21:35:24Z
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Piano Concerto No. 20 in D Minor, K. 466: III. Rondeau (Allegro assai - Cadenza - Tempo I)
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duration: PT7M48S
duration ms: 468733
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by artist: Philharmonia Orchestra
by artist: Wolfgang Sawallisch
by artist: Youri Egorov
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popularity: 2
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genre: classical-era
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genre: chamber-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:23:33Z
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Violin Concerto No. 9 in D Major, RV. 230: I. Allegro
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duration ms: 147906
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by artist: Renato Fasano
by artist: Virtuosi Di Roma
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popularity: 5
genre: classical
genre: early-music
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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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e87143a1bfb5b1137fd962ff00dd14e46b7e944ee44e9203d6f1ab846db889f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBAYC9602707 — a six-check JSON result.
  date published: 2026-07-30T04:47:22Z
audio: Violin Concerto No. 9 in D Major, RV. 230: I. Allegro
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Concerto for 2 Violins in A Minor, RV. 522: I. Allegro
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duration: PT3M52S
duration ms: 232826
explicit: false
by artist: Antonio Vivaldi
by artist: Renato Fasano
by artist: Virtuosi Di Roma
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBAYC9602701
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6fd840e1d2cfbddca06a1857c5fac9260bcf695f36d7ec89e8e7e0011fc9d9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9602701 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Concerto for 2 Violins in A Minor, RV. 522: I. Allegro
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 'Moonlight': I. Adagio sostenuto (Excerpt)
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duration: PT4M0S
duration ms: 240466
explicit: false
by artist: Ludwig van Beethoven
by artist: Moura Lympany
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f87f76d502dedd4d7b8f901faf5430a95fd9569f587b7ffd313714aaefb9943. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9001591 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 'Moonlight': I. Adagio sostenuto (Excerpt)
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Waltzes, Op. 64: No. 1 in D-Flat Major 'Minute Waltz'
type: MusicRecording
duration: PT1M47S
duration ms: 107533
explicit: false
by artist: Frédéric Chopin
by artist: Agustin Anievas
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: GBAYC8903086
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38446ed1518d41193731f8c69b4cc9844f53dcce8be756f2d73af5d42e2e8e44. 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/GBAYC8903086 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Waltzes, Op. 64: No. 1 in D-Flat Major 'Minute Waltz'
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Waltzes, Op. 64: No. 2 in C-Sharp Minor
type: MusicRecording
duration: PT3M30S
duration ms: 210386
explicit: false
by artist: Frédéric Chopin
by artist: Agustin Anievas
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popularity: 2
genre: classical
genre: early-romantic-era
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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 0x7ba6710507cd8779f0a66473dbe1622ce4d28e4cd17f897c4e3ad67f6a81bba9. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8903087 — a six-check JSON result.
  date published: 2026-07-31T20:22:46Z
audio: Waltzes, Op. 64: No. 2 in C-Sharp Minor
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Le Nozze di Figaro, K. 492: Overture
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duration: PT4M21S
duration ms: 261266
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Royal Philharmonic Orchestra
by artist: Sir Colin Davis
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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  value: 2026-07-31T12:24:41Z
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b4fc7533009b29092c03a3c8e9106ace3a6477ff41f199546c32b2d4e48471. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9002519 — a six-check JSON result.
  date published: 2026-07-31T12:24:41Z
audio: Le Nozze di Figaro, K. 492: Overture
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Exsultate, Jubilate, K. 165/K. 158a: III. Alleluia (Allegro)
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duration: PT2M24S
duration ms: 144133
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Jane Parker-Smith
by artist: Maurice André
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  date published: 2016-10-01
popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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 0xc4831be4269c6b709e91e81f774e39253cb1134a87b4fe2ffc0b3763e92aca52. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8701662 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Exsultate, Jubilate, K. 165/K. 158a: III. Alleluia (Allegro)
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Wiegenlied, D. 498
type: MusicRecording
duration: PT2M59S
duration ms: 179880
explicit: false
by artist: Franz Schubert
by artist: Janet Baker
by artist: Gerald Moore
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9602537
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T08:50:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1e9ed53f68177ce8f750cd4bd57b256009870e271d16d8d914ca3b5b086715d4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9602537
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 0x1e9ed53f68177ce8f750cd4bd57b256009870e271d16d8d914ca3b5b086715d4. 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/GBAYC9602537 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Wiegenlied, D. 498
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.552
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.198
  additional property: Energy
    type: PropertyValue
    value: 0.01
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.504
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.179
  additional property: Loudness (dB)
    type: PropertyValue
    value: -39.007
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Grande Marche Funebre in C Minor, D. 859
type: MusicRecording
duration: PT10M54S
duration ms: 654560
explicit: false
by artist: Franz Schubert
by artist: Christoph Eschenbach
by artist: Justus Frantz
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC7900336
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T10:52:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x67900cb00b5acf18c32d8bf49d495de1d466fa8733a887be3b59e3160b9eedb3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC7900336
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
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 0x67900cb00b5acf18c32d8bf49d495de1d466fa8733a887be3b59e3160b9eedb3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC7900336 — a six-check JSON result.
  date published: 2026-07-31T12:24:41Z
audio: Grande Marche Funebre in C Minor, D. 859
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.37
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.398
  additional property: Energy
    type: PropertyValue
    value: 0.019
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.855
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.334
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Totentanz, S. 126
type: MusicRecording
duration: PT8M0S
duration ms: 480720
explicit: false
by artist: Franz Liszt
by artist: Gewandhausorchester
by artist: Kurt Masur
by artist: Michel Béroff
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
genre: late-romantic-era
isrc code: GBAYC9002473
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:35:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x381f3d51f49336c921a70c736d2025101e8b1b85ee72db9c3647fb80adfd464d
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/GBAYC9002473
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381f3d51f49336c921a70c736d2025101e8b1b85ee72db9c3647fb80adfd464d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9002473 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Totentanz, S. 126
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.605
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.414
  additional property: Energy
    type: PropertyValue
    value: 0.292
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.884
  additional property: Liveness
    type: PropertyValue
    value: 0.068
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.152
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.668
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

String Quintet in E Major, G. 275: III. Minuetto in A Major
type: MusicRecording
duration: PT3M38S
duration ms: 218853
explicit: false
by artist: Luigi Boccherini
by artist: Europa Galante
by artist: Fabio Biondi
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
isrc code: GBAYC9903580
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T19:19:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x91a7f28bf8f612963ce5f822319a3e19116edac334cb38c836ec29ff88e78328
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/GBAYC9903580
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a7f28bf8f612963ce5f822319a3e19116edac334cb38c836ec29ff88e78328. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9903580 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: String Quintet in E Major, G. 275: III. Minuetto in A Major
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.651
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.39
  additional property: Energy
    type: PropertyValue
    value: 0.025
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.925
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.11
  additional property: Liveness
    type: PropertyValue
    value: 0.103
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.359
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.348
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

3 Gymnopédies: I. Lent et douloureux
type: MusicRecording
duration: PT3M35S
duration ms: 215960
explicit: false
by artist: Erik Satie
by artist: Anne Queffélec
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
genre: classical-piano
genre: impressionism
isrc code: GBAYC8800957
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T11:34:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x980751d3f205c89964eb5df95933420c37d35562e101863e660f89643a41fdc6
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/GBAYC8800957
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980751d3f205c89964eb5df95933420c37d35562e101863e660f89643a41fdc6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8800957 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: 3 Gymnopédies: I. Lent et douloureux
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.706
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.371
  additional property: Energy
    type: PropertyValue
    value: 0.002
  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.93
  additional property: Liveness
    type: PropertyValue
    value: 0.075
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.237
  additional property: Loudness (dB)
    type: PropertyValue
    value: -37.506
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Prince Igor, Act II: Polovtsian Dances
type: MusicRecording
duration: PT12M44S
duration ms: 764880
explicit: false
by artist: Alexander Borodin
by artist: Alexei Milkovsky
by artist: Boris Christoff
by artist: Constantin Chekerliski
by artist: Cyril Dulguerov
by artist: Jerzy Semkow
by artist: Julia Wiener
by artist: Luben Mihailov
by artist: Reni Penkova
by artist: Sofia National Opera Chorus
by artist: Sofia National Opera Theater Orchestra
by artist: Todor Todorov
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 2
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
isrc code: GBAYC1103044
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T10:39:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x443a3087b8a168236c347a3b00317a364be1b5e8e27cca40b40eafdb89fb5b54
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/GBAYC1103044
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443a3087b8a168236c347a3b00317a364be1b5e8e27cca40b40eafdb89fb5b54. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1103044 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Prince Igor, Act II: Polovtsian Dances
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.575
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.231
  additional property: Energy
    type: PropertyValue
    value: 0.215
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.904
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.37
  additional property: Liveness
    type: PropertyValue
    value: 0.095
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.079
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.459
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Cantabile in B-Flat Major, B. 84
type: MusicRecording
duration: PT1M5S
duration ms: 65373
explicit: false
by artist: Frédéric Chopin
by artist: Tzimon Barto
in album: Classical for Brain Power
  type: MusicAlbum
  date published: 2016-10-01
popularity: 1
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: GBAYC9100086
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe1f428923dd811204728f2c6bed65cdfd54c2412c95f096b3f0d6778b6a0d9dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960500
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9100086
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T03:13:03Z
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
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  date published: 2026-08-01T03:13:03Z
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3 Gymnopedies: III. Lent et Grave
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  date published: 2026-07-30T12:51:24Z
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Pavane pour une infante défunte, M. 19
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:57Z
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Piano Sonata No. 11 in A Major, K. 331: III. Rondo alla turca
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  date published: 2026-07-08T03:20:19Z
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Requiem Mass in D Minor, K. 626: VIII. Sequentia, Lacrimosa dies illa
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  date published: 2026-07-08T03:20:19Z
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Cello Suite No. 4, BWV. 1010: V. Bourrée
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  date published: 2026-07-31T15:20:15Z
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Septet in E-Flat Major, Op. 20: I. Adagio - Allegro con brio
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Piano Concerto No. 5 in E-Flat Major, Op. 73 'Emperor': I. Allegro
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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: Piano Concerto No. 5 in E-Flat Major, Op. 73 'Emperor': I. Allegro
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Concerto for 4 Harpsichords in A Minor, BWV. 1065: I. Allegro
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by artist: Bernhard Klapprott
by artist: Bob van Asperen
by artist: Carsten Lohff
by artist: Marcelo Bussi
by artist: Melante Amsterdam
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  date published: 2016-10-01
popularity: 1
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Violin Concerto in D Major, Op. 61: I. Allegro ma non troppo
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duration: PT4M7S
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by artist: Josef Suk
by artist: New Philharmonia Orchestra
by artist: Sir Adrian Boult
in album: Classical for Brain Power
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popularity: 1
genre: classical
genre: classical-piano
genre: chamber-music
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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: Violin Concerto in D Major, Op. 61: I. Allegro ma non troppo
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String Quartet No. 14 in D Minor, D. 810 'La Jeune Fille et la mort': II. Andante con moto
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duration ms: 136200
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by artist: Franz Schubert
by artist: Hungarian String Quartet
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popularity: 2
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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: String Quartet No. 14 in D Minor, D. 810 'La Jeune Fille et la mort': II. Andante con moto
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Solomon, HWV. 67, Act III: The Arrival of the Queen of Sheba
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duration ms: 170933
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by artist: Sir Neville Marriner
by artist: Academy of St. Martin in the Fields
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popularity: 1
genre: classical
genre: opera
genre: early-music
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genre: english-baroque
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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: Solomon, HWV. 67, Act III: The Arrival of the Queen of Sheba
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Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto (excerpt)
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duration: PT4M35S
duration ms: 275000
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by artist: Cecile Ousset
by artist: City Of Birmingham Symphony Orchestra
by artist: Sir Simon Rattle
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popularity: 1
genre: classical
genre: classical-piano
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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
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto (excerpt)
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Partita No. 3 in E Major, BWV. 1006: III. Gavotte en rondeu
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duration: PT2M58S
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by artist: Jane Parker-Smith
by artist: Maurice André
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  date published: 2016-10-01
popularity: 1
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
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Rhapsody on a Theme of Paganini, Op. 43: Var. XVIII. Andante cantabile, a tempo vivace
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  date published: 2026-07-08T03:20:19Z
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Magnificat in D Major, BWV. 243: I. Magnificat anima mea
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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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Triple Concerto in C Major, Op. 56: II. Largo
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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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Concerto for 2 Violins in D Minor, BWV. 1043: I. Vivace
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:13Z
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Symphony No. 2 in E Minor, Op. 27: I. Allegro moderato
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  date published: 2026-07-08T03:20:19Z
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Sonata for Cello and Piano, L. 135: I. Prologue (Lent)
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Orchestral Suite No. 4 in D Major, BWV. 1069: Menuets I & II
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audio: Orchestral Suite No. 4 in D Major, BWV. 1069: Menuets I & II
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Salut d'amour, Op. 12
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track: Vivaldi: Gloria in D Major, RV 589: I. Gloria in excelsis Deo
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track: Vivaldi: Lute Concerto in D Major, RV 93: II. Largo
track: Vivaldi: L'estro armonico, Violin Concerto in A Minor, Op. 3 No. 6, RV 356: I. Allegro
track: Vivaldi: L'estro armonico, Violin Concerto in A Minor, Op. 3 No. 6, RV 356: III. Presto
track: Vivaldi: Stabat Mater in F Minor, RV 621: I. Stabat Mater dolorosa
track: Vivaldi: The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. Allegro "La caccia"
track: Vivaldi: The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
track: Vivaldi: Concerto for Two Mandolins in G Major, RV 532: II. Andante
track: Vivaldi: L'estro armonico, Concerto for Four Violins in B Minor, Op. 3 No. 10, RV 580: I. Allegro
track: Vivaldi: L'estro armonico, Concerto for Two Violins in A Minor, Op. 3 No. 8, RV 522 "Per eco in lontano": I. Allegro
track: Vivaldi: L'estro armonico, Concerto for Two Violins in A Minor, Op. 3 No. 8, RV 522 "Per eco in lontano": III. Allegro
track: Vivaldi: Flute Concerto in G Minor, Op. 10 No. 2, RV 439 "La notte": VI. Allegro
track: Vivaldi: The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": II. Largo
track: Vivaldi: Giustino, RV 717, Act 1: "Vedrò con mio diletto" (Anastasio)
track: Vivaldi: Farnace, RV 711, Act 2: "Gelido in ogni vena" (Farnace)
track: Vivaldi: La stravaganza, Violin Concerto in E Minor, Op. 4 No. 2, RV 279: I. Allegro

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by artist: Fabio Biondi
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genre: classical
genre: early-music
genre: baroque
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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: Vivaldi: L'estro armonico, Violin Concerto in A Minor, Op. 3 No. 6, RV 356: I. Allegro
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Vivaldi: L'estro armonico, Violin Concerto in A Minor, Op. 3 No. 6, RV 356: III. Presto
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by artist: Antonio Vivaldi
by artist: Europa Galante
by artist: Fabio Biondi
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  type: MusicAlbum
  date published: 2024-02-29
popularity: 6
genre: classical
genre: early-music
genre: baroque
genre: concerto
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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: 2026-07-31T02:19:15Z
audio: Vivaldi: L'estro armonico, Violin Concerto in A Minor, Op. 3 No. 6, RV 356: III. Presto
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Vivaldi: Stabat Mater in F Minor, RV 621: I. Stabat Mater dolorosa
type: MusicRecording
duration: PT3M6S
duration ms: 186093
explicit: false
by artist: Antonio Vivaldi
by artist: Philippe Jaroussky
by artist: Alessandro Tampieri
by artist: Artaserse
in album: Vivaldi: Masterpieces
  type: MusicAlbum
  date published: 2024-02-29
popularity: 5
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBAYC1402077
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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Vivaldi: Stabat Mater in F Minor, RV 621: I. Stabat Mater dolorosa
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Vivaldi: The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. Allegro "La caccia"
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duration: PT3M11S
duration ms: 191693
explicit: false
by artist: Antonio Vivaldi
by artist: Il Giardino Armonico
by artist: Enrico Onofri
by artist: Giovanni Antonini
in album: Vivaldi: Masterpieces
  type: MusicAlbum
  date published: 2024-02-29
popularity: 5
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: DEA809423903
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T09:50:37Z
audio: Vivaldi: The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. Allegro "La caccia"
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Vivaldi: The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
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duration: PT2M44S
duration ms: 164906
explicit: false
by artist: Antonio Vivaldi
by artist: Ton Koopman
by artist: Andrew Manze
by artist: Amsterdam Baroque Orchestra
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  date published: 2024-02-29
popularity: 6
genre: classical
genre: early-music
genre: baroque
genre: concerto
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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: 2026-07-31T19:53:13Z
audio: Vivaldi: The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
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Vivaldi: Concerto for Two Mandolins in G Major, RV 532: II. Andante
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duration: PT2M49S
duration ms: 169826
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by artist: Antonio Vivaldi
by artist: Europa Galante
by artist: Fabio Biondi
by artist: Giovanni Scaramuzzino
by artist: Sonia Maurer
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  date published: 2024-02-29
popularity: 5
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBAYC0103447
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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 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: 2026-07-08T03:20:19Z
audio: Vivaldi: Concerto for Two Mandolins in G Major, RV 532: II. Andante
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Vivaldi: L'estro armonico, Concerto for Four Violins in B Minor, Op. 3 No. 10, RV 580: I. Allegro
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duration: PT3M52S
duration ms: 232560
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by artist: Lucy Howard
by artist: Pavlo Beznosiuk
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  date published: 2024-02-29
popularity: 6
genre: classical
genre: early-music
genre: baroque
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Vivaldi: L'estro armonico, Concerto for Two Violins in A Minor, Op. 3 No. 8, RV 522 "Per eco in lontano": I. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:06:57Z
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Vivaldi: L'estro armonico, Concerto for Two Violins in A Minor, Op. 3 No. 8, RV 522 "Per eco in lontano": III. 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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Vivaldi: Flute Concerto in G Minor, Op. 10 No. 2, RV 439 "La notte": VI. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
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Vivaldi: The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": II. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T06:42:11Z
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Vivaldi: Giustino, RV 717, Act 1: "Vedrò con mio diletto" (Anastasio)
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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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Vivaldi: Farnace, RV 711, Act 2: "Gelido in ogni vena" (Farnace)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:04:34Z
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Vivaldi: La stravaganza, Violin Concerto in E Minor, Op. 4 No. 2, RV 279: I. Allegro
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track: Vivaldi: Mandolin Concerto in C Major, RV 425: I. Allegro
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track: Vivaldi: Flute Concerto in G Minor, Op. 10 No. 2, RV 439 "La notte": V. Largo. Il Sonno
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track: Vivaldi: Violin Concerto in C Major, Op. 8 No. 6, RV 180 "Il piacere": I. Allegro
track: Vivaldi: Piccolo Concerto in C Major, RV 443: I. Allegro

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Vivaldi: Mandolin Concerto in C Major, RV 425: II. Largo
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Vivaldi: Flute Concerto in G Minor, Op. 10 No. 2, RV 439 "La notte": V. Largo. Il Sonno
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  date published: 2026-07-08T03:20:19Z
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Vivaldi: Concerto for Two Trumpets in C Major, RV 537: II. Largo
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Vivaldi: Violin Concerto in C Major, Op. 8 No. 6, RV 180 "Il piacere": I. Allegro
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Vivaldi: Piccolo Concerto in C Major, RV 443: I. Allegro
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Sonatas for Violin and Harpsichord - Johann Sebastian Bach
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Leclair: Violin Sonatas, Op. 5 Nos. 9-12
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Leclair: Violin Sonatas, Op. 5 Nos. 5-8
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Leclair: Violin Sonatas, Op. 5 Nos. 1-4
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Handel: Te Teum for Cannons & Chandos Anthem No.8
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Leclair: Violin Sonatas, Op. 2, Nos. 6, 7 & 9-12
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Leclair, J.-M.: Violin Sonatas, Op. 1, Nos. 9-12
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    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 0x42000346c9d6fb39205ba180d5f1b50c6171ae7c57432679207fd064f7ead6f1. 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/HKI190903101 — a six-check JSON result.
    date published: 2026-07-08T03:22:41Z
  audio: Violin Sonata in B-Flat Major, Op. 1, No. 11: I. Vivace
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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      value: 9
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.515
    additional property: Energy
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      value: 0.191
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.865
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.008
    additional property: Liveness
      type: PropertyValue
      value: 0.041
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.685
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.334
    additional property: Key Name
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      value: A
    additional property: Mode Name
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Leclair, J.-M.: Violin Sonatas, Op. 1, Nos. 5-8
type: MusicAlbum
date published: 2009-09-29

Leclair, J.-M.: Violin Sonatas, Op. 1, Nos. 1-4
type: MusicAlbum
date published: 2009-08-25

Schubert: Mass in G - Haydn: The 'Nelson' Mass
type: MusicAlbum
date published: 1994-09-07
track: Mass in G, D. 167: Kyrie eleison
  type: MusicRecording
  duration: PT3M59S
  duration ms: 239040
  explicit: false
  by artist: Franz Schubert
  by artist: Maurice Bevan
  by artist: David Roy
  by artist: Adrian Butterfield
  by artist: Barry Rose
  by artist: London Bach Orchestra
  in album: Schubert: Mass in G - Haydn: The 'Nelson' Mass
    type: MusicAlbum
    date published: 1994-09-07
  popularity: 6
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: CH6639470401
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-29T13:54:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x99ec0e6acb467a7f8db5ca754716bce51d47eacafdb4ae5cd35a54fcadff3ca0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960117
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960117
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6639470401
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T14:28:24Z
  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 0x99ec0e6acb467a7f8db5ca754716bce51d47eacafdb4ae5cd35a54fcadff3ca0. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6639470401 — a six-check JSON result.
    date published: 2026-07-29T14:28:24Z
  audio: Mass in G, D. 167: Kyrie eleison
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 107.392
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.205
    additional property: Energy
      type: PropertyValue
      value: 0.181
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.975
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.227
    additional property: Liveness
      type: PropertyValue
      value: 0.129
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.062
    additional property: Loudness (dB)
      type: PropertyValue
      value: -23.806
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Mass in G, D. 167: Gloria in excelsis Deo
  type: MusicRecording
  duration: PT3M5S
  duration ms: 185266
  explicit: false
  by artist: Franz Schubert
  by artist: Maurice Bevan
  by artist: David Roy
  by artist: Adrian Butterfield
  by artist: Barry Rose
  by artist: London Bach Orchestra
  in album: Schubert: Mass in G - Haydn: The 'Nelson' Mass
    type: MusicAlbum
    date published: 1994-09-07
  popularity: 4
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: CH6639470402
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-29T22:55:21+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd2508c4fb3def6c68c486962713a631822619fb823041acc03fec48cb31d1d17
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960163
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960163
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6639470402
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T23:20:38Z
  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 0xd2508c4fb3def6c68c486962713a631822619fb823041acc03fec48cb31d1d17. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/CH6639470402 — a six-check JSON result.
    date published: 2026-07-29T23:20:38Z
  audio: Mass in G, D. 167: Gloria in excelsis Deo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 136.92
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.339
    additional property: Energy
      type: PropertyValue
      value: 0.198
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.975
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.027
    additional property: Liveness
      type: PropertyValue
      value: 0.139
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.106
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.052
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Mass in G, D. 167: Credo in unum Deum
  type: MusicRecording
  duration: PT5M30S
  duration ms: 330960
  explicit: false
  by artist: Franz Schubert
  by artist: Maurice Bevan
  by artist: David Roy
  by artist: Adrian Butterfield
  by artist: Barry Rose
  by artist: London Bach Orchestra
  in album: Schubert: Mass in G - Haydn: The 'Nelson' Mass
  popularity: 4
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: CH6639470403
  additional property: CopyrightID
  additional property: CopyrightStatus
  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: Mass in G, D. 167: Credo in unum Deum
track: Mass in G, D. 167: Sanctus Dominus Deus Sabaoth
track: Mass in G, D. 167: Benedictus qui venit
track: Mass in G, D. 167: Agnus Dei
track: Mass in D Minor 'Nelson': Kyrie eleison
track: Mass in D Minor 'Nelson': Gloria in Excelsis Deo

Schubert: Mass in G - Haydn: The 'Nelson' Mass
type: MusicAlbum
date published: 1994-09-07

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-29T22:55:00+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x1219212ecb0ea5e7f9247d55d10912bb5b7a080e595c34044e40aa39b519378f

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960163

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960163

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6639470403

OTSTimestamp
type: PropertyValue
value: 2026-07-29T23:20:38Z

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 0x1219212ecb0ea5e7f9247d55d10912bb5b7a080e595c34044e40aa39b519378f. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/CH6639470403 — a six-check JSON result.
date published: 2026-07-29T23:20:38Z

Mass in G, D. 167: Credo in unum Deum
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 148.601
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.198
additional property: Energy
  type: PropertyValue
  value: 0.116
additional property: Speechiness
  type: PropertyValue
  value: 0.046
additional property: Acousticness
  type: PropertyValue
  value: 0.983
additional property: Instrumentalness
  type: PropertyValue
  value: 0.016
additional property: Liveness
  type: PropertyValue
  value: 0.226
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.082
additional property: Loudness (dB)
  type: PropertyValue
  value: -24.996
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

Mass in G, D. 167: Sanctus Dominus Deus Sabaoth
type: MusicRecording
duration: PT1M32S
duration ms: 92973
explicit: false
by artist: Franz Schubert
by artist: Maurice Bevan
by artist: David Roy
by artist: Adrian Butterfield
by artist: Barry Rose
by artist: London Bach Orchestra
in album: Schubert: Mass in G - Haydn: The 'Nelson' Mass
  type: MusicAlbum
  date published: 1994-09-07
popularity: 4
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CH6639470404
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T01:47:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x804020ceb7d221b95415ff2b4926d6c283dc2f295900cb45775f4ffd03b3f808
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960193
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960193
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6639470404
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T02:05:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804020ceb7d221b95415ff2b4926d6c283dc2f295900cb45775f4ffd03b3f808. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6639470404 — a six-check JSON result.
  date published: 2026-07-30T02:05:19Z
audio: Mass in G, D. 167: Sanctus Dominus Deus Sabaoth
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.427
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.421
  additional property: Energy
    type: PropertyValue
    value: 0.217
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.014
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.191
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.97
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Mass in G, D. 167: Benedictus qui venit
type: MusicRecording
duration: PT4M27S
duration ms: 267600
explicit: false
by artist: Franz Schubert
by artist: Maurice Bevan
by artist: David Roy
by artist: Adrian Butterfield
by artist: Barry Rose
by artist: London Bach Orchestra
in album: Schubert: Mass in G - Haydn: The 'Nelson' Mass
  type: MusicAlbum
  date published: 1994-09-07
popularity: 4
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CH6639470405
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T01:52:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x51dd0c77aa54aa873670fdd75f0f0f44f47dc61c776d39a9ec88d8d7a4761da6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960193
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960193
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6639470405
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T02:05:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dd0c77aa54aa873670fdd75f0f0f44f47dc61c776d39a9ec88d8d7a4761da6. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6639470405 — a six-check JSON result.
  date published: 2026-07-30T02:05:19Z
audio: Mass in G, D. 167: Benedictus qui venit
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.663
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.175
  additional property: Energy
    type: PropertyValue
    value: 0.112
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.34
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.186
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.933
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Mass in G, D. 167: Agnus Dei
type: MusicRecording
duration: PT5M23S
duration ms: 323066
explicit: false
by artist: Franz Schubert
by artist: Maurice Bevan
by artist: David Roy
by artist: Adrian Butterfield
by artist: Barry Rose
by artist: London Bach Orchestra
in album: Schubert: Mass in G - Haydn: The 'Nelson' Mass
  type: MusicAlbum
  date published: 1994-09-07
popularity: 4
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CH6639470406
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T22:21:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd67e43c8b011902d9d3019317d8de38490fef5081c615f50374520d448229c8e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960160
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960160
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6639470406
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T22:48:59Z
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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Handel: Complete Sonatas & Works for Violin and Continuo
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Naxos July 2013 New Release Sampler
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Leclair: Violin Sonatas, Op. 5 Nos. 5-8
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CPE Bach: Violin sonatas
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