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type: MusicGroup
genre: opera
popularity: 4
followers: 2
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additional property: CopyrightChainExplorerURL
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-17T08:11:48Z
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track: Boris Godunov: Opera in Four Acts With a Prologue: Prologue, Scene 1: "Who are you adandoning us to"
track: Boris Godunov: Opera in Four Acts With a Prologue: Prologue, Scene 1: "Did you hear what the holy pilgrims said?"

Boris Godunov: Opera in Four Acts With a Prologue: Prologue, Scene 1: "Who are you adandoning us to"
type: MusicRecording
duration: PT3M18S
duration ms: 198266
explicit: false
by artist: Modest Mussorgsky
by artist: Claudio Abbado
by artist: Berliner Philharmoniker
by artist: Slovak Philharmonic Chorus Bratislava
by artist: Rundfunkchor Berlin
by artist: Tölzer Knabenchor
by artist: Wojciech Drabowicz
by artist: Mikhail Krutikov
by artist: Liliana Nichiteanu
by artist: Valentina Valente
by artist: Eugenia Gorochovskaya
by artist: Philip Langridge
by artist: Albert Shagidullin
by artist: Samuel Ramey
by artist: Sergej Larin
by artist: Marjana Lipovek
by artist: Helmut Wildhaber
by artist: Gleb Nikolsky
by artist: Elena Zaremba
by artist: Alexander Fedin
by artist: Tölz Boys' Choir
in album: Mussorgsky: Boris Godunov
  type: MusicAlbum
  date published: 1994-05-03
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
isrc code: USSM10205328
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10205328
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+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
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6785904f76a2fb2e0de660d2795d64140be8789e1f762541894e9c3d938f0936. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USSM10205328.
  date published: 2026-07-02T11:38:34Z
audio: Boris Godunov: Opera in Four Acts With a Prologue: Prologue, Scene 1: "Who are you adandoning us to"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.602
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
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  additional property: Danceability
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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
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    type: PropertyValue
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  additional property: Valence (Positivity)
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    value: 0.165
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.643
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Boris Godunov: Opera in Four Acts With a Prologue: Prologue, Scene 1: "Did you hear what the holy pilgrims said?"
type: MusicRecording
duration: PT3M14S
duration ms: 194160
explicit: false
by artist: Modest Mussorgsky
by artist: Claudio Abbado
by artist: Berliner Philharmoniker
by artist: Slovak Philharmonic Chorus Bratislava
by artist: Rundfunkchor Berlin
by artist: Tölzer Knabenchor
by artist: Mikhail Krutikov
by artist: Wojciech Drabowicz
by artist: Liliana Nichiteanu
by artist: Valentina Valente
by artist: Eugenia Gorochovskaya
by artist: Philip Langridge
by artist: Albert Shagidullin
by artist: Samuel Ramey
by artist: Sergej Larin
by artist: Marjana Lipovek
by artist: Helmut Wildhaber
by artist: Gleb Nikolsky
by artist: Elena Zaremba
by artist: Alexander Fedin
by artist: Tölz Boys' Choir
in album: Mussorgsky: Boris Godunov
  type: MusicAlbum
  date published: 1994-05-03
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T15:38:18Z
audio: Boris Godunov: Opera in Four Acts With a Prologue: Prologue, Scene 1: "Did you hear what the holy pilgrims said?"
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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    value: 1
  additional property: Time Signature
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  additional property: Danceability
    type: PropertyValue
    value: 0.173
  additional property: Energy
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    value: 0.01
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.957
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.139
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.109
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.142
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USSM10205335
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: BitcoinBlock
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additional property: BitcoinTime
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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