Katrina Penman
type: MusicGroup
popularity: 10
followers: 41
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/df2f5de2-c618-4d6b-9ae3-08d17c8bebae.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/df2f5de2-c618-4d6b-9ae3-08d17c8bebae.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/df2f5de2-c618-4d6b-9ae3-08d17c8bebae
additional property: OTSTimestamp
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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
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  date published: 2026-06-21T07:29:20Z
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album: Trío Rigoletto: Chamber Music for Two Flutes and Piano
  type: MusicAlbum
  date published: 2024-01-02
album: Vaughan Williams: 3 Studies in English Folk Song (Arr. Flute & Piano)
  type: MusicAlbum
  date published: 2024-11-22
album: Lumina: Flute Transcriptions by Katrina Penman
  type: MusicAlbum
  date published: 2024-12-11
album: Beyond
  type: MusicAlbum
  date published: 2025-04-03
track: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): I. Adagio
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  duration: PT1M41S
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  by artist: Ralph Vaughan Williams
  by artist: Katrina Penman
  by artist: Claudia Vior
  in album: Inspirations. Young Female Virtuose
    type: MusicAlbum
    date published: 2024-12-03
  isrc code: DEPI82450010
  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/DEPI82450010
  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 0x6824ba45adc5a1d50320da49587e11f7ea00a9f91715563180989fed05f9fcd4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82450010.
    date published: 2026-07-08T03:20:19Z
  audio: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): I. Adagio
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    additional property: Tempo (BPM)
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track: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): II. Andante Sostenuto
  type: MusicRecording
  duration: PT1M23S
  duration ms: 83033
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  by artist: Ralph Vaughan Williams
  by artist: Katrina Penman
  by artist: Claudia Vior
  in album: Inspirations. Young Female Virtuose
    type: MusicAlbum
    date published: 2024-12-03
  isrc code: DEPI82450011
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: OTSVerificationAPI
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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 0x57600f5e72fc2cdb4461c75513fd83411e5b0b95a698565d2acf0e042824412f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEPI82450011.
    date published: 2026-07-31T08:26:41Z
  audio: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): II. Andante Sostenuto
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    additional property: Tempo (BPM)
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    additional property: Instrumentalness
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track: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): III. Larghetto
track: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): IV. Lento
track: Ave Maria (Transcription by Katrina Penman for Alto Flute and Piano)
track: Gran Trio, Op. 119: III. Rondo
track: Grand Concert Fantasy, Op. 5 (Sobre "Un Ballo in Maschera" De Verdi)
track: Rigoletto-Fantaisie, Op. 38
track: Andante & Rondo, Op. 25
track: Rivera

Instrumentalness
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value: 0.759

Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): III. Larghetto
type: MusicRecording
duration: PT1M41S
duration ms: 101955
explicit: false
by artist: Ralph Vaughan Williams
by artist: Katrina Penman
by artist: Claudia Vior
in album: Inspirations. Young Female Virtuose
  type: MusicAlbum
  date published: 2024-12-03
isrc code: DEPI82450012
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-30T20:17:56+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
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82450012
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T20:35:49Z
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 0x7e2903c2b926cfb9bef895dfffdd8254f57a7a1dda49bf406072180adbf6e22b. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEPI82450012.
  date published: 2026-07-30T20:35:49Z
audio: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): III. Larghetto
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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: 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
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): IV. Lento
type: MusicRecording
duration: PT1M32S
duration ms: 92704
explicit: false
by artist: Ralph Vaughan Williams
by artist: Katrina Penman
by artist: Claudia Vior
in album: Inspirations. Young Female Virtuose
  type: MusicAlbum
  date published: 2024-12-03
isrc code: DEPI82450013
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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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/DEPI82450013
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 0xdee1421040e55821fab23bf210d2521f658ef9ec6ee5d254170ce5701ca9f052. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEPI82450013.
  date published: 2026-07-31T08:26:41Z
audio: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): IV. Lento
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  additional property: Speechiness
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  additional property: Acousticness
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Ave Maria (Transcription by Katrina Penman for Alto Flute and Piano)
type: MusicRecording
duration: PT2M16S
duration ms: 136527
explicit: false
by artist: Johann Sebastian Bach
by artist: Charles Gounod
by artist: Katrina Penman
by artist: Claudia Vior
in album: Inspirations. Young Female Virtuose
  type: MusicAlbum
  date published: 2024-12-03
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: DEPI82450017
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
  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 0xd8508ac59d2ee686ea054c207f4ec16ad80304463926fbf90d7ddd991c1817aa. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82450017.
  date published: 2026-07-08T03:20:19Z
audio: Ave Maria (Transcription by Katrina Penman for Alto Flute and Piano)
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  additional property: Mode (Major/Minor)
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Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): III. Larghetto
type: MusicRecording
duration: PT1M41S
duration ms: 101955
explicit: false
by artist: Ralph Vaughan Williams
by artist: Katrina Penman
by artist: Claudia Vior
in album: 'Atalia' - Contemporary & Classical Masterworks, Vol. 3
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  date published: 2025-04-21
isrc code: DEPI82450012
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSHash
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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
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  date published: 2026-07-31T00:26:26Z
audio: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): III. Larghetto
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Gran Trio, Op. 119: III. Rondo
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duration: PT6M20S
duration ms: 380393
explicit: false
by artist: Friedrich Kuhlau
by artist: Katrina Penman
by artist: Sara Santirso
by artist: Beatriz Mier
in album: 'Atalia' - Contemporary & Classical Masterworks, Vol. 1
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  date published: 2025-04-19
isrc code: DEPI82509611
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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
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  date published: 2026-07-08T03:20:19Z
audio: Gran Trio, Op. 119: III. Rondo
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Grand Concert Fantasy, Op. 5 (Sobre "Un Ballo in Maschera" De Verdi)
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duration: PT10M2S
duration ms: 602582
explicit: false
by artist: Giuseppe Verdi
by artist: LUIGI HUGUES
by artist: Katrina Penman
by artist: Sara Santirso
by artist: Beatriz Mier
in album: 'Atalia' - Contemporary & Classical Masterworks, Vol. 1
  type: MusicAlbum
  date published: 2025-04-19
genre: classical
genre: opera
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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
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  date published: 2026-07-30T14:36:16Z
audio: Grand Concert Fantasy, Op. 5 (Sobre "Un Ballo in Maschera" De Verdi)
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Ave Maria (Transcription by Katrina Penman for Alto Flute and Piano)
type: MusicRecording
duration: PT2M16S
duration ms: 136527
explicit: false
by artist: Johann Sebastian Bach
by artist: Charles Gounod
by artist: Katrina Penman
by artist: Claudia Vior
in album: 'Atalia' - Contemporary & Classical Masterworks, Vol. 1
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  date published: 2025-04-19
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
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additional property: OTSTimestamp
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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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  date published: 2026-07-08T03:20:19Z
audio: Ave Maria (Transcription by Katrina Penman for Alto Flute and Piano)
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Rigoletto-Fantaisie, Op. 38
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duration: PT10M28S
duration ms: 628244
explicit: false
by artist: Karl Doppler
by artist: Franz Doppler
by artist: Giuseppe Verdi
by artist: Katrina Penman
by artist: Sara Santirso
by artist: Beatriz Mier
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  value: 2026-07-30T08:30:10Z
additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T08:30:10Z
audio: Rigoletto-Fantaisie, Op. 38
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Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): I. Adagio
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duration: PT1M41S
duration ms: 101162
explicit: false
by artist: Ralph Vaughan Williams
by artist: Katrina Penman
by artist: Claudia Vior
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): I. Adagio
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Andante & Rondo, Op. 25
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duration: PT9M14S
duration ms: 554625
explicit: false
by artist: Franz Doppler
by artist: Karl Doppler
by artist: Katrina Penman
by artist: Sara Santirso
by artist: Beatriz Mier
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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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  date published: 2026-07-30T12:06:10Z
audio: Andante & Rondo, Op. 25
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Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): IV. Lento
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by artist: Ralph Vaughan Williams
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by artist: Claudia Vior
in album: 'Atalia' - Contemporary & Classical Masterworks, Vol. 4
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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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  date published: 2026-07-30T22:27:30Z
audio: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): IV. Lento
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Rivera
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by artist: PABLO TORIBIO GIL
by artist: Katrina Penman
by artist: Sara Santirso
by artist: Beatriz Mier
in album: 'Atalia' - Contemporary & Classical Masterworks, Vol. 2
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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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2132bc39d7a5ae30592261047aa5442dc52d3a4d250d1c31b2f751a6f24b55e4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEPI82509615.
  date published: 2026-07-30T03:35:13Z
audio: Rivera
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Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): II. Andante Sostenuto
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by artist: Ralph Vaughan Williams
by artist: Katrina Penman
by artist: Claudia Vior
in album: 'Atalia' - Contemporary & Classical Masterworks, Vol. 2
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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 0x57600f5e72fc2cdb4461c75513fd83411e5b0b95a698565d2acf0e042824412f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEPI82450011.
  date published: 2026-07-30T12:45:34Z
audio: Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): II. Andante Sostenuto
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