Ambrogio Maestri
type: MusicGroup
genre: opera
description: Ambrogio Maestri (born 1970) is an Italian operatic baritone. He is especially known for his portrayal of the title character in Giuseppe Verdi's Falstaff. He studied piano and singing in his home tow
popularity: 4
followers: 150
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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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. 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
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  date published: 2026-06-22T02:53:59Z
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track: Aida / Act 2: "Che veggo!...Egli?...Mio padre!"
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  duration: PT0M51S
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  by artist: Giuseppe Verdi
  by artist: Kristin Lewis
  by artist: Veronica Simeoni
  by artist: Ambrogio Maestri
  by artist: Giorgio Giuseppini
  by artist: Orchestra del Maggio Musicale Fiorentino
  by artist: Zubin Mehta
  in album: Verdi: Aida
    type: MusicAlbum
    date published: 2016-07-01
  genre: classical
  genre: opera
  isrc code: ITZ041600031
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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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    date published: 2026-07-30T21:35:24Z
  audio: Aida / Act 2: "Che veggo!...Egli?...Mio padre!"
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track: Aida / Act 2: "Quest'assisa ch'io vesto vi dica"
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  by artist: Giuseppe Verdi
  by artist: Ambrogio Maestri
  by artist: Orchestra del Maggio Musicale Fiorentino
  by artist: Zubin Mehta
  in album: Verdi: Aida
    type: MusicAlbum
    date published: 2016-07-01
  genre: classical
  genre: opera
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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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    date published: 2026-07-30T04:47:22Z
  audio: Aida / Act 2: "Quest'assisa ch'io vesto vi dica"
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    additional property: Danceability
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    additional property: Acousticness
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track: Aida / Act 2: "Ma tu, Re, tu signore possente"
track: Aida / Act 2: "Gloria all'Egitto, ad Iside"
track: Aida / Act 3: "Ciel! mio padre!"
track: Aida / Act 3: "Tu...Amonasro!...tu!...il Re?"
track: Falstaff: Act I: Sei polli: sei scellini (Falstaff, Bardolfo, Pistola)
track: Falstaff: Act I: Ma e tempo d'assottigliar l'ingegno (Falstaff, Bardolfo, Pistola)

Acousticness
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value: 0.004

Liveness
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Valence (Positivity)
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value: 0.317

Loudness (dB)
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Key Name
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Mode Name
type: PropertyValue
value: Major

Aida / Act 2: "Ma tu, Re, tu signore possente"
type: MusicRecording
duration: PT3M53S
duration ms: 233047
explicit: false
by artist: Giuseppe Verdi
by artist: Ambrogio Maestri
by artist: Kristin Lewis
by artist: Carlo Colombara
by artist: Andrea Bocelli
by artist: Veronica Simeoni
by artist: Giorgio Giuseppini
by artist: Coro del Maggio Musicale Fiorentino
by artist: Orchestra del Maggio Musicale Fiorentino
by artist: Zubin Mehta
in album: Verdi: Aida
  type: MusicAlbum
  date published: 2016-07-01
genre: classical
genre: opera
isrc code: ITZ041600033
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
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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 0x41e63e4d3d4448a18e12e33f23e7e1c8062739b7832230da215a6b38b504c448. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ITZ041600033 — a six-check JSON result.
  date published: 2026-07-30T07:28:30Z
audio: Aida / Act 2: "Ma tu, Re, tu signore possente"
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Loudness (dB)
    type: PropertyValue
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Aida / Act 2: "Gloria all'Egitto, ad Iside"
type: MusicRecording
duration: PT3M18S
duration ms: 198901
explicit: false
by artist: Giuseppe Verdi
by artist: Carlo Colombara
by artist: Kristin Lewis
by artist: Giorgio Giuseppini
by artist: Andrea Bocelli
by artist: Veronica Simeoni
by artist: Ambrogio Maestri
by artist: Coro del Maggio Musicale Fiorentino
by artist: Orchestra del Maggio Musicale Fiorentino
by artist: Zubin Mehta
in album: Verdi: Aida
  type: MusicAlbum
  date published: 2016-07-01
genre: classical
genre: opera
isrc code: ITZ041600035
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
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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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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  date published: 2026-07-29T19:35:34Z
audio: Aida / Act 2: "Gloria all'Egitto, ad Iside"
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Aida / Act 3: "Ciel! mio padre!"
type: MusicRecording
duration: PT7M49S
duration ms: 469491
explicit: false
by artist: Giuseppe Verdi
by artist: Kristin Lewis
by artist: Ambrogio Maestri
by artist: Orchestra del Maggio Musicale Fiorentino
by artist: Zubin Mehta
in album: Verdi: Aida
  type: MusicAlbum
  date published: 2016-07-01
genre: classical
genre: opera
isrc code: ITZ041600038
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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  value: 2026-07-06T21:47:40+00:00
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
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6389473bcf96df0754824a14b42baa00230b31467352aeefe49d3cef5b92bd8a. 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/ITZ041600038 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Aida / Act 3: "Ciel! mio padre!"
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Aida / Act 3: "Tu...Amonasro!...tu!...il Re?"
type: MusicRecording
duration: PT2M52S
duration ms: 172834
explicit: false
by artist: Giuseppe Verdi
by artist: Andrea Bocelli
by artist: Kristin Lewis
by artist: Ambrogio Maestri
by artist: Carlo Colombara
by artist: Orchestra del Maggio Musicale Fiorentino
by artist: Zubin Mehta
in album: Verdi: Aida
  type: MusicAlbum
  date published: 2016-07-01
genre: classical
genre: opera
isrc code: ITZ041600041
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITZ041600041
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 0x1e7d0e9fa5a443e6df0cf56d9b39ec61594934b2514516fa5a0bf643c165752e. 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/ITZ041600041 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Aida / Act 3: "Tu...Amonasro!...tu!...il Re?"
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  additional property: Tempo (BPM)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.35
  additional property: Energy
    type: PropertyValue
    value: 0.418
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.958
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.25
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.275
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.062
  additional property: Key Name
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    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Falstaff: Act I: Sei polli: sei scellini (Falstaff, Bardolfo, Pistola)
type: MusicRecording
duration: PT2M52S
duration ms: 172819
explicit: false
by artist: Giuseppe Verdi
by artist: Ambrogio Maestri
by artist: Patrizio Saudelli
by artist: Mattia Denti
by artist: Orchestra Teatro Regio di Parma
by artist: Andrea Battistoni
in album: Verdi: Falstaff
  type: MusicAlbum
  date published: 2014-04-16
genre: classical
genre: opera
isrc code: DESB31328503
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:03:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe13b2b1efe6cfe955824adc3e4b2c11465d497ed22f72415b757cb32597d8273
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960459
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DESB31328503
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T20:22:46Z
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 0xe13b2b1efe6cfe955824adc3e4b2c11465d497ed22f72415b757cb32597d8273. 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/DESB31328503 — a six-check JSON result.
  date published: 2026-07-31T20:22:46Z
audio: Falstaff: Act I: Sei polli: sei scellini (Falstaff, Bardolfo, Pistola)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.167
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.391
  additional property: Energy
    type: PropertyValue
    value: 0.171
  additional property: Speechiness
    type: PropertyValue
    value: 0.186
  additional property: Acousticness
    type: PropertyValue
    value: 0.847
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.681
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.388
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.831
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Falstaff: Act I: Ma e tempo d'assottigliar l'ingegno (Falstaff, Bardolfo, Pistola)
type: MusicRecording
duration: PT3M44S
duration ms: 224505
explicit: false
by artist: Giuseppe Verdi
by artist: Ambrogio Maestri
by artist: Patrizio Saudelli
by artist: Mattia Denti
by artist: Orchestra Teatro Regio di Parma
by artist: Andrea Battistoni
in album: Verdi: Falstaff
  type: MusicAlbum
  date published: 2014-04-16
genre: classical
genre: opera
isrc code: DESB31328504
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:23:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74cb66108b7430803accf1fbf18efa8aad8dc9afa84c7a4ca2656b4978741aea
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/DESB31328504
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 0x74cb66108b7430803accf1fbf18efa8aad8dc9afa84c7a4ca2656b4978741aea. 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/DESB31328504 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Falstaff: Act I: Ma e tempo d'assottigliar l'ingegno (Falstaff, Bardolfo, Pistola)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.228
  additional property: Musical Key
    type: PropertyValue
    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: 0.365
  additional property: Energy
    type: PropertyValue
    value: 0.133
  additional property: Speechiness
    type: PropertyValue
    value: 0.155
  additional property: Acousticness
    type: PropertyValue
    value: 0.878
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.782
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.482
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.474
  additional property: Key Name
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    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major