Alessandro Rolla
type: MusicGroup
description: Alessandro Rolla (; 23 April 175714 September 1841) was an Italian viola and violin virtuoso, composer, conductor and teacher. His son, Antonio Rolla, was also a violin virtuoso and composer. His fam
popularity: 11
followers: 1881
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b40d3f0ae1cf9e402989eb4dd19b6424897f19a383f1040ac26d504adcb2d4c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/280bb207-74a7-453a-9af1-cadc786cae76.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/280bb207-74a7-453a-9af1-cadc786cae76.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/280bb207-74a7-453a-9af1-cadc786cae76
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6b40d3f0ae1cf9e402989eb4dd19b6424897f19a383f1040ac26d504adcb2d4c","name":"Alessandro Rolla","registered_at":"2026-06-14T08:37:20Z","symbol":"NIM0397889","token_address":"0x1b1bf4d3175839faf1def5173103832cca4f167c","type":"artist","uuid":"280bb207-74a7-453a-9af1-cadc786cae76"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin 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 0x6b40d3f0ae1cf9e402989eb4dd19b6424897f19a383f1040ac26d504adcb2d4c. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/280bb207-74a7-453a-9af1-cadc786cae76.json and https://artists.proofprofile.net/proofs/artist/280bb207-74a7-453a-9af1-cadc786cae76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:37:06Z
  text: {"copyright_id":"0x6b40d3f0ae1cf9e402989eb4dd19b6424897f19a383f1040ac26d504adcb2d4c","name":"Alessandro Rolla","registered_at":"2026-06-14T08:37:20Z","symbol":"NIM0397889","token_address":"0x1b1bf4d3175839faf1def5173103832cca4f167c","type":"artist","uuid":"280bb207-74a7-453a-9af1-cadc786cae76"}
album: Rolla: Viola Concertos/Concerto in E flat, Op. 3/Divertimento in F/
  type: MusicAlbum
  date published: 1995-01-01
album: Rolla: Viola Concertos/Concerto in E flat, Op. 3/Divertimento in F/
  type: MusicAlbum
  date published: 1995-01-01
album: Rolla: 3 Duet Concertantes, Op. 15
  type: MusicAlbum
  date published: 1999-01-01
album: Rolla: 3 Duet Concertantes, Op. 15
  type: MusicAlbum
  date published: 1999-01-01
album: Rolla: String Quartets, Op. 5, Nos. 3-5
  type: MusicAlbum
  date published: 2001-01-01
album: Rolla: Duets - Caprices
  type: MusicAlbum
  date published: 2001-01-01
album: Rolla: Duets - Caprices
  type: MusicAlbum
  date published: 2001-01-01
album: Rolla: String Quartets, Op. 5, Nos. 3-5
  type: MusicAlbum
  date published: 2001-01-01
album: Rolla: Concertos / Symphonies
  type: MusicAlbum
  date published: 2003-01-01
album: Rolla: Concertos / Symphonies
  type: MusicAlbum
  date published: 2003-01-01
album: Rolla: 3 Duos for Violin & Cello
  type: MusicAlbum
  date published: 2003-11-01
  track: Duo for Violin & Cello in B-Flat Major, BI. 244: II. Andantino
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192306
    explicit: false
    by artist: Alessandro Rolla
    in album: Rolla: 3 Duos for Violin & Cello
      type: MusicAlbum
      date published: 2003-11-01
    isrc code: DEB200196402
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T20:48:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x333d5975e28aeb7f26face8752a9683d1344c2255d514e7a7836546d2be2e4eb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB200196402
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0x333d5975e28aeb7f26face8752a9683d1344c2255d514e7a7836546d2be2e4eb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEB200196402.
      date published: 2026-07-02T16:51:38Z
    audio: Duo for Violin & Cello in B-Flat Major, BI. 244: II. Andantino
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.997
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.292
      additional property: Energy
        type: PropertyValue
        value: 0.041
      additional property: Speechiness
        type: PropertyValue
        value: 0.051
      additional property: Acousticness
        type: PropertyValue
        value: 0.985
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.657
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.12
      additional property: Loudness (dB)
        type: PropertyValue
        value: -23.243
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Rolla: 3 Duos for Violin & Cello
  type: MusicAlbum
  date published: 2003-11-01
album: Rolla, A.: Chamber Music
  type: MusicAlbum
  date published: 2004-01-01
album: Rolla, A.: Chamber Music
  type: MusicAlbum
  date published: 2004-01-01
album: Rolla, A.: Flute Quartets, Op. 2, Nos. 1 and 2 / Divertimento Ossia Sestetto, Bi 433 / Divertimento, Bi 427A
  type: MusicAlbum
  date published: 2008-01-01
album: Rolla, A.: Flute Quartets, Op. 2, Nos. 1 and 2 / Divertimento Ossia Sestetto, Bi 433 / Divertimento, Bi 427A
  type: MusicAlbum
  date published: 2008-01-01
album: Jennifer Stumm plays music by Rolla
  type: MusicAlbum
  date published: 2011-03-01
  track: Viola Sonata No. 1 in E-Flat Major, Op. 3, BI 325: II. Lento
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216560
    explicit: false
    by artist: Alessandro Rolla
    in album: Jennifer Stumm plays music by Rolla
      type: MusicAlbum
      date published: 2011-03-01
    isrc code: HKI190940302
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T10:54:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x06d993acc5ac9a4f65ce2729e5e6596f57d37f287e78b5a5f208f462d775c91f
    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
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Viola Sonata No. 1 in E-Flat Major, Op. 3, BI 325: II. Lento
album: Rolla: 6 quartetti per flauto e archi
album: Rolla: Duetti per flauto e violino
album: Rolla: 6 duetti a due viole
album: Rolla: 3 Violin Concertos
album: Rolla: 3 duo concertanti per violino e viola
album: Rolla: Concerti per viola e orchestra
album: Rolla: Violin Concerto in C Major - Adagio per l'amico Cavinatti - Sinfonia in D Major
album: Rolla: 6 Trio Concertantes, Op. 1 (Complete)
album: Rolla: Duets for 2 Violins
album: Rolla: Music for Viola and Ensemble 2 Sinfonias
album: Rolla: Viola Concertos, Symphony in D, Tantum ergo
album: Rolla: 6 Duets for Flute & Violin
album: Rolla: Chamber Music
album: Divertimento per viola e quartetto d'archi
album: Alessandro Rolla: 3 Esercizi (Capricci) for Viola, BI 311, 313, 314
album: Alessandro Rolla: Complete Works for Solo Viola, BI. 310 -322

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190940302

OTSTimestamp
type: PropertyValue
value: 2026-07-31T12:24:41Z

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 0x06d993acc5ac9a4f65ce2729e5e6596f57d37f287e78b5a5f208f462d775c91f. 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/HKI190940302.
date published: 2026-07-31T12:24:41Z

Viola Sonata No. 1 in E-Flat Major, Op. 3, BI 325: II. Lento
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 109.672
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: 0.238
additional property: Energy
  type: PropertyValue
  value: 0.044
additional property: Speechiness
  type: PropertyValue
  value: 0.043
additional property: Acousticness
  type: PropertyValue
  value: 0.987
additional property: Instrumentalness
  type: PropertyValue
  value: 0.682
additional property: Liveness
  type: PropertyValue
  value: 0.085
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.153
additional property: Loudness (dB)
  type: PropertyValue
  value: -26.311
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

Jennifer Stumm plays music by Rolla
type: MusicAlbum
date published: 2011-03-01

Rolla: 6 quartetti per flauto e archi
type: MusicAlbum
date published: 2012-10-01

Rolla: Duetti per flauto e violino
type: MusicAlbum
date published: 2012-10-01

Rolla: 6 duetti a due viole
type: MusicAlbum
date published: 2012-10-01

Rolla: 3 Violin Concertos
type: MusicAlbum
date published: 2012-10-02

Rolla: 3 Violin Concertos
type: MusicAlbum
date published: 2012-10-02

Rolla: 3 duo concertanti per violino e viola
type: MusicAlbum
date published: 2013-01-01

Rolla: Concerti per viola e orchestra
type: MusicAlbum
date published: 2013-01-01

Rolla: 6 duetti a due viole
type: MusicAlbum
date published: 2013-06-15

Rolla: Concerti per viola e orchestra
type: MusicAlbum
date published: 2013-06-19

Rolla: 6 quartetti per flauto e archi
type: MusicAlbum
date published: 2013-06-20

Rolla: Duetti per flauto e violino
type: MusicAlbum
date published: 2013-07-13

Rolla: 3 duo concertanti per violino e viola
type: MusicAlbum
date published: 2013-07-13

Rolla: Violin Concerto in C Major - Adagio per l'amico Cavinatti - Sinfonia in D Major
type: MusicAlbum
date published: 2013-09-01

Rolla: Violin Concerto in C Major - Adagio per l'amico Cavinatti - Sinfonia in D Major
type: MusicAlbum
date published: 2013-09-01

Rolla: 6 Trio Concertantes, Op. 1 (Complete)
type: MusicAlbum
date published: 2014-07-15

Rolla: 6 Trio Concertantes, Op. 1 (Complete)
type: MusicAlbum
date published: 2014-07-15

Rolla: Duets for 2 Violins
type: MusicAlbum
date published: 2014-11-04

Rolla: Duets for 2 Violins
type: MusicAlbum
date published: 2014-11-04

Rolla: Music for Viola and Ensemble 2 Sinfonias
type: MusicAlbum
date published: 2015-03-06

Rolla: Viola Concertos, Symphony in D, Tantum ergo
type: MusicAlbum
date published: 2018-12-28

Rolla: 6 Duets for Flute & Violin
type: MusicAlbum
date published: 2019-05-10

Rolla: 6 Duets for Flute & Violin
type: MusicAlbum
date published: 2019-05-10

Rolla: Chamber Music
type: MusicAlbum
date published: 2020-07-17

Rolla: Chamber Music
type: MusicAlbum
date published: 2020-07-17

Divertimento per viola e quartetto d'archi
type: MusicAlbum
date published: 2021-02-24

Alessandro Rolla: 3 Esercizi (Capricci) for Viola, BI 311, 313, 314
type: MusicAlbum
date published: 2025-08-29

Alessandro Rolla: Complete Works for Solo Viola, BI. 310 -322
type: MusicAlbum
date published: 2025-09-05