Mario Castelnuovo-Tedesco
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description: Mario Castelnuovo-Tedesco (3 April 1895 – 16 March 1968) was an Italian composer, pianist and writer. He was known as one of the foremost guitar composers in the twentieth century with almost one hund
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album: Castelnuovo-Tedesco: Platero y yo, Op. 190 (Version for Solo Guitar) [Excerpts]
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album: Suite Italienne
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  track: Suite Italienne from "Pulcinella" - Arr. by Stravinsky & Dushkin: 3. Tarantella
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  track: 'Violetta', Fantasia for Violin and Piano from 'La Traviata'
album: 'Figaro', Fantasia for Violin and Piano From 'Il Barbiere di Siviglia'
album: Castelnuovo-Tedesco: Piano Concertos Nos. 1 & 2
album: Castelnuovo-Tedesco: Works for Cello & Piano
album: perpe2um
album: The Art Of Segovia (Disc I)
album: Castelnuovo-Tedesco: Guitar Chamber Works - Complete Edition
album: Castelnuovo-Tedesco: Shakespeare Sonnets, Op. 125 & Duets, Op. 97
album: Homage to Paderewski
album: Mario Castelnuovo Tedesco: Works for Violin and Piano
album: The Daughter of Regiment - Greeting Cards - Sonata
album: Castelnuovo-Tedesco: Complete Italian Solo Guitar Music
album: Mario Castelnuovo-Tedesco: The Importance of Being Earnest
album: Castelnuovo-Tedesco: Music for Violin and Piano
album: Castelnuovo-Tedesco: Complete String Quartets
album: Mario Castelnuovo-Tedesco: 24 Caprichos de Goya, Op. 195, 3 Preludi al Circeo, Op. 194
album: Les Guitares Bien Tempérées
album: Mario Castelnuovo-Tedesco: Appunti, Op. 210 (Preludes and Studies for Guitar)
album: Mario Castelnuovo-Tedesco, Platero y yo
album: Mario Castelnuovo Tedesco: Works for Guitar
album: Castelnuovo-Tedesco: Songs from Exile
album: Castelnuovo Tedesco: Platero y YO (Guitar solo)
album: Castelnuovo Tedesco: Platero y YO
album: Castelnuovo-Tedesco: Liriche da camera e opera pianistiche
album: Platero y Yo
album: Castelnuovo-Tedesco: Greeting Cards for Guitar
album: Mario Castelnuovo-Tedesco: Chamber Works
album: Italian Fancy, Vol. 3
album: Castelnuovo-Tedesco: Greeting Cards
album: Appunti
album: Castelnuovo-Tedesco: Guitar Concerto No. 1 in D Major, Op. 99 (Live)
album: Castelnuovo-Tedesco: Guitar Chamber Music
album: Castelnuovo-Tedesco: The Well Tempered Guitars Op.199 (Vol. 1)
album: Castelnuovo-Tedesco: Chamber Music
album: Castelnuovo-Tedesco: Music for Violin & Piano
album: Songs from a Lost World of Italian Jewish Composers, Vol. III
album: The Tedesco Recordings
album: プラテーロとわたし
album: Time Regained (Early Works for Solo Guitar)
album: Mario Castelnuovo-Tedesco: Guitar Works
album: Castelnuovo-Tedesco: Violin Concerto No. 3
album: The Eclectic Piano Music of Mario Castelnuovo-Tedesco
album: Mario Castelnuovo-Tedesco: Exotica (World Premiere Recording)
album: Castelnuovo-Tedesco: Piano Works
album: Classics Discoveries
track: The Lark
track: Tedesco - Romancero Gitano: La Guitarra

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Quintet for Guitar and String Quartet, Op. 143: II. Andante mesto
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Sonatina, Op. 205: II. Tempo di Siciliana. Andantino grazioso e malinconico
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Quintet for Guitar and String Quartet, Op. 143: I. Allegro, vivo e schietto
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duration: PT6M17S
duration ms: 377000
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by artist: Mario Castelnuovo-Tedesco
by artist: Giampaolo Bandini
by artist: Quartetto Adorno
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:51:35Z
audio: Quintet for Guitar and String Quartet, Op. 143: I. Allegro, vivo e schietto
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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

Sonatina, Op. 205: I. Allegretto grazioso
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duration: PT4M12S
duration ms: 252580
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Giampaolo Bandini
by artist: Andrea Oliva
in album: Castelnuovo-Tedesco: Guitar Chamber Works - Complete Edition
  type: MusicAlbum
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc800127854287b58d4605360e50a8ff51c8c1386832359b1049e7257b17f6210. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITUM72101090.
  date published: 2026-07-31T23:30:38Z
audio: Sonatina, Op. 205: I. Allegretto grazioso
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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

Fantasia, Op. 145: I. Andantino
type: MusicRecording
duration: PT5M55S
duration ms: 355540
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Giampaolo Bandini
by artist: Alberto Miodini
in album: Castelnuovo-Tedesco: Guitar Chamber Works - Complete Edition
  type: MusicAlbum
  date published: 2021-10-22
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf174c55e854ca14f46678ca0db9c673d5df9813e09dc6ee5e433d15df2974010. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITUM72101095.
  date published: 2026-07-31T02:19:15Z
audio: Fantasia, Op. 145: I. Andantino
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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

Fantasia, Op. 145: II. Vivacissimo
type: MusicRecording
duration: PT3M38S
duration ms: 218060
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Giampaolo Bandini
by artist: Alberto Miodini
in album: Castelnuovo-Tedesco: Guitar Chamber Works - Complete Edition
  type: MusicAlbum
  date published: 2021-10-22
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39f60ab80f15e3fd40dd2b7762eb5178f01ac4a9ac52e2e9a1d7676c8545909. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITUM72101096.
  date published: 2026-07-31T12:24:41Z
audio: Fantasia, Op. 145: II. Vivacissimo
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additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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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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Greeting Cards, Op. 170: No. 5, Tonadilla on the Name of Andrés Segovia
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duration: PT5M13S
duration ms: 313386
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrea de Vitis
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Greeting Cards, Op. 170: No. 5, Tonadilla on the Name of Andrés Segovia
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Greeting Cards, Op. 170: No. 6, Rondel on the Name of Siegfried Behrend
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duration: PT4M38S
duration ms: 278293
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrea de Vitis
in album: Castelnuovo-Tedesco: Greeting Cards for Guitar
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  date published: 2023-04-14
isrc code: HKI192233002
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-07-08T03:22:41+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957120
additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abeb406fa8042110d67063a7462c3df3a7fcf576427a06afd96333bc8fc9c4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192233002.
  date published: 2026-07-08T08:56:20Z
audio: Greeting Cards, Op. 170: No. 6, Rondel on the Name of Siegfried Behrend
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Greeting Cards, Op. 170: No. 14, Ninna Nanna, a Lullaby for Eugene
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duration: PT3M52S
duration ms: 232666
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrea de Vitis
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isrc code: HKI192233005
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192233005
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T17:25:41Z
audio: Greeting Cards, Op. 170: No. 14, Ninna Nanna, a Lullaby for Eugene
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Greeting Cards, Op. 170: No. 33, Canzone siciliana sul nome Gangi (Mario Gangi)
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duration: PT3M33S
duration ms: 213666
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrea de Vitis
in album: Castelnuovo-Tedesco: Greeting Cards for Guitar
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Greeting Cards, Op. 170: No. 33, Canzone siciliana sul nome Gangi (Mario Gangi)
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Greeting Cards, Op. 170: No. 48, Canzone calabrese on the Name of Ernest Calabria
type: MusicRecording
duration: PT3M23S
duration ms: 203573
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrea de Vitis
in album: Castelnuovo-Tedesco: Greeting Cards for Guitar
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2770901fe9616c376796c391e4eeb939a7941353e859cfa34262a5c141fd9ac. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192233020.
  date published: 2026-07-02T03:30:09Z
audio: Greeting Cards, Op. 170: No. 48, Canzone calabrese on the Name of Ernest Calabria
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Greeting Cards, Op. 170: No. 7, Preludio in forma di habanera sul nome di Bruno Tonazzi
type: MusicRecording
duration: PT3M40S
duration ms: 220213
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrea de Vitis
in album: Castelnuovo-Tedesco: Greeting Cards for Guitar
  type: MusicAlbum
  date published: 2023-04-14
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f716242409d6ec78e2f4bbf3aaf191801e51ebb106cfe71937fce47e007c82. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192233003.
  date published: 2026-08-01T02:22:04Z
audio: Greeting Cards, Op. 170: No. 7, Preludio in forma di habanera sul nome di Bruno Tonazzi
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    value: 5
  additional property: Danceability
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  additional property: Energy
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isrc code: HKI192233003
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Greeting Cards, Op. 170: No. 10, Tanka (Japanese Song) on the Name of Isao Takahashi
type: MusicRecording
duration: PT3M26S
duration ms: 206986
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrea de Vitis
in album: Castelnuovo-Tedesco: Greeting Cards for Guitar
  type: MusicAlbum
  date published: 2023-04-14
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648f050549159ec28f36aa54440ed1a4dd6aa04bf93de718a961ec58babec7f7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192233004.
  date published: 2026-07-31T17:29:52Z
audio: Greeting Cards, Op. 170: No. 10, Tanka (Japanese Song) on the Name of Isao Takahashi
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    value: 1
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    type: PropertyValue
    value: 5
  additional property: Danceability
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  additional property: Acousticness
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isrc code: HKI192233004
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Greeting Cards, Op. 170: No. 15, Song of the Azores on the Name of Enos (Joseph Enos)
type: MusicRecording
duration: PT4M5S
duration ms: 245160
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrea de Vitis
in album: Castelnuovo-Tedesco: Greeting Cards for Guitar
  type: MusicAlbum
  date published: 2023-04-14
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01896ab0801908d71099aae7b142250ed23162bdd15df37cedb2488e68c48524. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192233006.
  date published: 2026-07-31T19:53:13Z
audio: Greeting Cards, Op. 170: No. 15, Song of the Azores on the Name of Enos (Joseph Enos)
  type: AudioObject
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    value: 2
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    value: 0
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    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Acousticness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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isrc code: HKI192233006
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: 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

Greeting Cards, Op. 170: No. 38, Homage to Purcell, Fantasia on the Names of Ronald and Henry Purcell
type: MusicRecording
duration: PT4M14S
duration ms: 254506
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrea de Vitis
in album: Castelnuovo-Tedesco: Greeting Cards for Guitar
  type: MusicAlbum
  date published: 2023-04-14
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7a0eccbb6c56d08b671cfeaedecbb01446664abfbf604289ba44ae3810a429. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192233011.
  date published: 2026-07-31T17:29:52Z
audio: Greeting Cards, Op. 170: No. 38, Homage to Purcell, Fantasia on the Names of Ronald and Henry Purcell
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additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Guitar Concerto No. 1 in D Major, Op. 99: I. Allegro giusto (Live, 1939)
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duration: PT6M20S
duration ms: 380280
explicit: false
by artist: Mario Castelnuovo-Tedesco
by artist: Andrés Segovia
by artist: Orquesta Sinfonica del Sodre
by artist: Lamberto Baldi
in album: Castelnuovo-Tedesco: Guitar Concerto No. 1 in D Major, Op. 99 (Live)
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  date published: 2021-11-19
isrc code: ITX921003736
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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I. Tranquillo e sognante
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XI. Vivace in B Major
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The Lark
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Tedesco - Romancero Gitano: La Guitarra
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'Figaro', Fantasia for Violin and Piano From 'Il Barbiere di Siviglia'
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Castelnuovo-Tedesco: Piano Concertos Nos. 1 & 2
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Castelnuovo-Tedesco: Works for Cello & Piano
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perpe2um
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The Art Of Segovia (Disc I)
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Castelnuovo-Tedesco: Guitar Chamber Works - Complete Edition
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Castelnuovo-Tedesco: Shakespeare Sonnets, Op. 125 & Duets, Op. 97
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Homage to Paderewski
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Mario Castelnuovo Tedesco: Works for Violin and Piano
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The Daughter of Regiment - Greeting Cards - Sonata
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Castelnuovo-Tedesco: Complete Italian Solo Guitar Music
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Mario Castelnuovo-Tedesco: The Importance of Being Earnest
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Castelnuovo-Tedesco: Music for Violin and Piano
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Castelnuovo-Tedesco: Complete String Quartets
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Mario Castelnuovo-Tedesco: 24 Caprichos de Goya, Op. 195, 3 Preludi al Circeo, Op. 194
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Les Guitares Bien Tempérées
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Mario Castelnuovo-Tedesco, Platero y yo
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Mario Castelnuovo Tedesco: Works for Guitar
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Castelnuovo-Tedesco: Songs from Exile
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Castelnuovo Tedesco: Platero y YO
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Castelnuovo-Tedesco: Liriche da camera e opera pianistiche
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Platero y Yo
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Mario Castelnuovo-Tedesco: Chamber Works
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Italian Fancy, Vol. 3
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Appunti
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Castelnuovo-Tedesco: Guitar Concerto No. 1 in D Major, Op. 99 (Live)
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Castelnuovo-Tedesco: Guitar Chamber Music
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Castelnuovo-Tedesco: The Well Tempered Guitars Op.199 (Vol. 1)
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Castelnuovo-Tedesco: Chamber Music
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Castelnuovo-Tedesco: Music for Violin & Piano
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Songs from a Lost World of Italian Jewish Composers, Vol. III
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The Tedesco Recordings
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プラテーロとわたし
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Time Regained (Early Works for Solo Guitar)
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Mario Castelnuovo-Tedesco: Guitar Works
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Castelnuovo-Tedesco: Violin Concerto No. 3
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The Eclectic Piano Music of Mario Castelnuovo-Tedesco
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Mario Castelnuovo-Tedesco: Exotica (World Premiere Recording)
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Castelnuovo-Tedesco: Piano Works
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Classics Discoveries
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