Corina Marti
type: MusicGroup
genre: gregorian chant
genre: medieval
popularity: 10
followers: 456
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  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: 2026-06-21T07:29:20Z
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album: Von edler Art
  type: MusicAlbum
  date published: 2008
album: KeyNotes: Early European Keyboard Music
  type: MusicAlbum
  date published: 2008-03-01
album: I dilettosi fiori
  type: MusicAlbum
  date published: 2012-02-21
album: I dilettosi fiori
  type: MusicAlbum
  date published: 2012-03-19
album: Quando cala la notte
  type: MusicAlbum
  date published: 2016-02-05
album: Quando cala la notte
  type: MusicAlbum
  date published: 2016-02-19
album: Johannes de Lublin Tablature: Keyboard Music from Renaissance Poland
  type: MusicAlbum
  date published: 2018-07-27
track: Vergine donzella imperadrice
track: Musique profane: I. Una panthera in compagnia di marte
track: Musique profane: II. Sus un' fontayne

Vergine donzella imperadrice
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duration: PT5M30S
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by artist: Anonymous
by artist: La Morra
by artist: Corina Marti
by artist: Michał Gondko
in album: Music in Golden-Age Florence 1250-1750
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  date published: 2024-02-16
isrc code: DEY322206003
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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
additional property: ProofProfileEvidenceStatus
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Vergine donzella imperadrice
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  additional property: Time Signature
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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: Loudness (dB)
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Musique profane: I. Una panthera in compagnia di marte
type: MusicRecording
duration: PT5M30S
duration ms: 330973
explicit: false
by artist: Johannes Ciconia
by artist: La Morra
by artist: Corina Marti
by artist: Michał Gondko
in album: Ciconia: Opera omnia
  type: MusicAlbum
  date published: 2011-08-29
popularity: 2
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:04:34Z
audio: Musique profane: I. Una panthera in compagnia di marte
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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

Musique profane: II. Sus un' fontayne
type: MusicRecording
duration: PT7M47S
duration ms: 467626
explicit: false
by artist: Johannes Ciconia
by artist: La Morra
by artist: Corina Marti
by artist: Michał Gondko
in album: Ciconia: Opera omnia
  type: MusicAlbum
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popularity: 1
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:27:29Z
audio: Musique profane: II. Sus un' fontayne
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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