Arvid Jansons
type: MusicGroup
popularity: 9
followers: 120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x11e7133949acb8f8b6ee318b849270793465cebe3b90a61c0c6795162fea6f2f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b07ede99-5455-41e1-8a18-0a68053cbe2c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b07ede99-5455-41e1-8a18-0a68053cbe2c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b07ede99-5455-41e1-8a18-0a68053cbe2c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
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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 0x11e7133949acb8f8b6ee318b849270793465cebe3b90a61c0c6795162fea6f2f. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b07ede99-5455-41e1-8a18-0a68053cbe2c.json and https://artists.proofprofile.net/proofs/artist/b07ede99-5455-41e1-8a18-0a68053cbe2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x11e7133949acb8f8b6ee318b849270793465cebe3b90a61c0c6795162fea6f2f","name":"Arvid Jansons","registered_at":"2026-06-20T11:41:04Z","symbol":"NIM1604463","token_address":"0xe897cba2245075885837ac6677a89d9a9f73e3bd","type":"artist","uuid":"b07ede99-5455-41e1-8a18-0a68053cbe2c"}
album: Mozart Requiem KV 626 8-14
  type: MusicAlbum
  date published: 2012-04-04
album: Mozart Requiem KV 626 1-7
  type: MusicAlbum
  date published: 2012-04-04
  track: Mozart Requiem in D Minor KV 626: II. Kyrie eleison
    type: MusicRecording
    duration: PT3M5S
    duration ms: 185573
    explicit: false
    by artist: Arvid Jansons
    in album: Mozart Requiem KV 626 1-7
      type: MusicAlbum
      date published: 2012-04-04
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    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcd09c1658cb8faddf746610538e747f5adb78f7b61f57046a16c8c57554456e3
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956894
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA561089894
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T07:53:57Z
    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 0xcd09c1658cb8faddf746610538e747f5adb78f7b61f57046a16c8c57554456e3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USA561089894.
      date published: 2026-07-06T07:53:57Z
    audio: Mozart Requiem in D Minor KV 626: II. Kyrie eleison
      type: AudioObject
      additional property: Tempo (BPM)
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        value: 99.996
      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
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      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
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      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
        type: PropertyValue
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      additional property: Key Name
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      additional property: Mode Name
        type: PropertyValue
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track: Requiem Mass in D Minor, K. 626: VIII. Lacrimosa
  type: MusicRecording
  duration: PT5M28S
  duration ms: 328706
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Arvid Jansons
  by artist: Lithuania RTV
  in album: 100 Most Essential Classical Favorites
    type: MusicAlbum
    date published: 2009-01-01
  genre: classical
  genre: classical-era
  isrc code: USSJ10804258
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-18T11:27:29+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe9fb731ce14b711df783c7783372d504c2db6f22a4b627b5efda2d303d6bd67a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956302
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10804258
  additional property: OTSTimestamp
    type: PropertyValue
    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 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 0xe9fb731ce14b711df783c7783372d504c2db6f22a4b627b5efda2d303d6bd67a. 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/USSJ10804258.
    date published: 2026-07-02T03:30:09Z
  audio: Requiem Mass in D Minor, K. 626: VIII. Lacrimosa
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
      type: PropertyValue
      value: 0.075
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0.759
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name
track: Assaggio in A Major for Solo Violin, BeRl 301: I. Andante
track: Assaggio in A Major for Solo Violin, BeRl 301: II. Allegro
track: Assaggio in A Major for Solo Violin, BeRl 301: III. Moderato
track: Assaggio in A Major for Solo Violin, BeRl 301: IV. Allegro assai
track: Violin Sonata No. 2 in G Major for Violin and Piano: I. Allegro moderato
track: Violin Sonata No. 2 in G Major for Violin and Piano: II. Lento

Liveness
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value: 0.099

Valence (Positivity)
type: PropertyValue
value: 0.035

Loudness (dB)
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value: -27.57

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Minor

Assaggio in A Major for Solo Violin, BeRl 301: I. Andante
type: MusicRecording
duration: PT2M58S
duration ms: 178000
explicit: false
by artist: Johan Helmich Roman
by artist: Jaap Schröder
by artist: Stig Westerberg
by artist: Arvid Jansons
by artist: Jorma Panula
by artist: Jan-Olav Wedin
by artist: Herbert Blomstedt
by artist: Swedish Radio Symphony Orchestra
by artist: Royal Stockholm Philharmonic Orchestra
by artist: Stockholm Sinfonietta
in album: The Swedish Violin
  type: MusicAlbum
  date published: 2015-03-31
genre: galante-era
genre: swedish-classical
isrc code: SEAGA8602160
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-01-28T18:36:13+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xea2edcebbad939dd6070d99f30931961e90e6f7523f3b97c817a5be2609ac675
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAGA8602160
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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 0xea2edcebbad939dd6070d99f30931961e90e6f7523f3b97c817a5be2609ac675. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA8602160.
  date published: 2026-06-13T12:47:07Z
audio: Assaggio in A Major for Solo Violin, BeRl 301: I. Andante
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Assaggio in A Major for Solo Violin, BeRl 301: II. Allegro
type: MusicRecording
duration: PT4M13S
duration ms: 253200
explicit: false
by artist: Johan Helmich Roman
by artist: Jaap Schröder
by artist: Stig Westerberg
by artist: Arvid Jansons
by artist: Jorma Panula
by artist: Jan-Olav Wedin
by artist: Herbert Blomstedt
by artist: Swedish Radio Symphony Orchestra
by artist: Royal Stockholm Philharmonic Orchestra
by artist: Stockholm Sinfonietta
in album: The Swedish Violin
  type: MusicAlbum
  date published: 2015-03-31
genre: galante-era
genre: swedish-classical
isrc code: QM6P41490713
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-01-28T20:02:27+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x50e5e9211360879f86544601d2d39c2e3585b1dc7c62daa43decda2e408b0d13
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41490713
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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 0x50e5e9211360879f86544601d2d39c2e3585b1dc7c62daa43decda2e408b0d13. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P41490713.
  date published: 2026-06-13T12:47:07Z
audio: Assaggio in A Major for Solo Violin, BeRl 301: II. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Key Name
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Assaggio in A Major for Solo Violin, BeRl 301: III. Moderato
type: MusicRecording
duration: PT4M50S
duration ms: 290800
explicit: false
by artist: Johan Helmich Roman
by artist: Jaap Schröder
by artist: Stig Westerberg
by artist: Arvid Jansons
by artist: Jorma Panula
by artist: Jan-Olav Wedin
by artist: Herbert Blomstedt
by artist: Swedish Radio Symphony Orchestra
by artist: Royal Stockholm Philharmonic Orchestra
by artist: Stockholm Sinfonietta
in album: The Swedish Violin
  type: MusicAlbum
  date published: 2015-03-31
genre: galante-era
genre: swedish-classical
isrc code: SEAGA8602180
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-01-28T17:53:37+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAGA8602180
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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 0xdc9da65641c5ba006c9d7e2facc544458e257f4ca6e34a65a4d1efd716b90343. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA8602180.
  date published: 2026-06-13T12:47:07Z
audio: Assaggio in A Major for Solo Violin, BeRl 301: III. Moderato
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Acousticness
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  additional property: Liveness
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    type: PropertyValue
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Assaggio in A Major for Solo Violin, BeRl 301: IV. Allegro assai
type: MusicRecording
duration: PT1M43S
duration ms: 103800
explicit: false
by artist: Johan Helmich Roman
by artist: Jaap Schröder
by artist: Stig Westerberg
by artist: Arvid Jansons
by artist: Jorma Panula
by artist: Jan-Olav Wedin
by artist: Herbert Blomstedt
by artist: Swedish Radio Symphony Orchestra
by artist: Royal Stockholm Philharmonic Orchestra
by artist: Stockholm Sinfonietta
in album: The Swedish Violin
  type: MusicAlbum
  date published: 2015-03-31
genre: galante-era
genre: swedish-classical
isrc code: SEAGA8602190
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: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
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Violin Sonata No. 2 in G Major for Violin and Piano: I. Allegro moderato
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duration: PT8M22S
duration ms: 502419
explicit: false
by artist: Wilhelm Peterson-Berger
by artist: Karl-Ove Mannberg
by artist: Elisif Lundén-Bergfelt
by artist: Stig Westerberg
by artist: Arvid Jansons
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by artist: Jan-Olav Wedin
by artist: Herbert Blomstedt
by artist: Swedish Radio Symphony Orchestra
by artist: Royal Stockholm Philharmonic Orchestra
by artist: Stockholm Sinfonietta
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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: 2026-06-13T12:47:07Z
audio: Violin Sonata No. 2 in G Major for Violin and Piano: I. Allegro moderato
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Violin Sonata No. 2 in G Major for Violin and Piano: II. Lento
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duration: PT10M54S
duration ms: 654252
explicit: false
by artist: Wilhelm Peterson-Berger
by artist: Karl-Ove Mannberg
by artist: Elisif Lundén-Bergfelt
by artist: Stig Westerberg
by artist: Arvid Jansons
by artist: Jorma Panula
by artist: Jan-Olav Wedin
by artist: Herbert Blomstedt
by artist: Swedish Radio Symphony Orchestra
by artist: Royal Stockholm Philharmonic Orchestra
by artist: Stockholm Sinfonietta
in album: The Swedish Violin
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  date published: 2015-03-31
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eb8df4c47d2790df99f58a2ffd6732d92bd29d4106000bee44e0cd4ef17cc1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA1500802.
  date published: 2026-06-13T12:47:07Z
audio: Violin Sonata No. 2 in G Major for Violin and Piano: II. Lento
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