David Govertsen
type: MusicGroup
genre: opera
popularity: 4
followers: 9
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52ec92f01f4d5968faf83a68223443ad33f5d84dfda16639cc2f9b99643e412. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6120f7ea-1c0c-40de-9f70-51ed7149cc63.json and https://artists.proofprofile.net/proofs/artist/6120f7ea-1c0c-40de-9f70-51ed7149cc63.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:11:48Z
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track: Otello: Act I: Una vela! (Chorus, Montano, Cassio, Iago, Roderigo)
  type: MusicRecording
  duration: PT4M27S
  duration ms: 267000
  explicit: false
  by artist: Giuseppe Verdi
  by artist: Aleksandrs Antonenko
  by artist: Krassimira Stoyanova
  by artist: Carlo Guelfi
  by artist: Barbara di Castri
  by artist: Juan Francisco Gatell
  by artist: Michael Spyres
  by artist: Paolo Battaglia
  by artist: Eric Owens
  by artist: David Govertsen
  by artist: Chicago Symphony Chorus
  by artist: Chicago Children's Choir
  by artist: Chicago Symphony Orchestra
  by artist: Riccardo Muti
  in album: Verdi: Otello
    type: MusicAlbum
    date published: 2013-09-03
  genre: classical
  genre: opera
  isrc code: USH550909221
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USH550909221
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T06:58:00Z
  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 0xd6eb5b89ad270736f90dfd89f7e7f16a3ea7c8789991ad00faca98117cbca20b. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USH550909221 — a six-check JSON result.
    date published: 2026-07-31T06:58:00Z
  audio: Otello: Act I: Una vela! (Chorus, Montano, Cassio, Iago, Roderigo)
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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: Danceability
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    additional property: Speechiness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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      value: B
    additional property: Mode Name
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track: Otello: Act I: Fuoco di gioia! (Chorus, Iago, Cassio, Roderigo)
  type: MusicRecording
  duration: PT4M3S
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  by artist: Giuseppe Verdi
  by artist: Aleksandrs Antonenko
  by artist: Krassimira Stoyanova
  by artist: Carlo Guelfi
  by artist: Barbara di Castri
  by artist: Juan Francisco Gatell
  by artist: Michael Spyres
  by artist: Paolo Battaglia
  by artist: Eric Owens
  by artist: David Govertsen
  by artist: Chicago Symphony Chorus
  by artist: Chicago Children's Choir
  by artist: Chicago Symphony Orchestra
  by artist: Riccardo Muti
  in album: Verdi: Otello
    type: MusicAlbum
    date published: 2013-09-03
  genre: classical
  genre: opera
  isrc code: USH550909224
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USH550909224
  additional property: OTSTimestamp
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    value: 2026-07-31T21:25:57Z
  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 0x13c3bd8f40357d2e0a3f8899de98118ae3e5dc22055402595f40758f1761560e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USH550909224 — a six-check JSON result.
    date published: 2026-07-31T21:25:57Z
  audio: Otello: Act I: Fuoco di gioia! (Chorus, Iago, Cassio, Roderigo)
    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: Valence (Positivity)
    additional property: Loudness (dB)
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track: Otello: Act I: Inaffia l'ugola! (Iago, Cassio, Roderigo, Chorus)

Mode (Major/Minor)
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Time Signature
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Danceability
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Energy
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Speechiness
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Acousticness
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Instrumentalness
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Liveness
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value: 0.25

Valence (Positivity)
type: PropertyValue
value: 0.264

Loudness (dB)
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Key Name
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Mode Name
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value: Major

Otello: Act I: Inaffia l'ugola! (Iago, Cassio, Roderigo, Chorus)
type: MusicRecording
duration: PT4M3S
duration ms: 243906
explicit: false
by artist: Giuseppe Verdi
by artist: Aleksandrs Antonenko
by artist: Krassimira Stoyanova
by artist: Carlo Guelfi
by artist: Barbara di Castri
by artist: Juan Francisco Gatell
by artist: Michael Spyres
by artist: Paolo Battaglia
by artist: Eric Owens
by artist: David Govertsen
by artist: Chicago Symphony Chorus
by artist: Chicago Children's Choir
by artist: Chicago Symphony Orchestra
by artist: Riccardo Muti
in album: Verdi: Otello
  type: MusicAlbum
  date published: 2013-09-03
genre: classical
genre: opera
isrc code: USH550909225
additional property: CopyrightID
additional property: CopyrightStatus
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  value: registered
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/USH550909225
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 0xd404040453ecb573b90d147bc2875995dba3b465020fa9d383ff8aa2988ed0ff. 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/USH550909225 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Otello: Act I: Inaffia l'ugola! (Iago, Cassio, Roderigo, Chorus)
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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