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album: Renaissance Era Classical
album: Spanish Classical Masterpieces
album: Guitar (Eternal)
album: Sáinz de la Maza: Guitar Music
album: Homs: Music for Guitar & Guitar Duo
album: Milán: El Maestro
album: Guitar Music of Colombia
album: Escobar, Jose Antonio: Guitar Music of Chile
album: Modinha
album: Guitar Recital: Jose Antonio Escobar
album: Elegía por Violeta Parra
album: Habanera
album: Nana
album: Impresiones de Aranjuez
album: Music for Book Lovers: Classical Music for Reading
album: Los Exitos de Guitarra Española (Volumen I)
album: Classical Music from Around the World
album: 15 Grandes de la Guitarra Española Vol. 1
album: 15 Grandes de Guitarra
album: Classical Hidden Gems, Vol. 6

Piano Suite "Entre dues línies" (Version for 2 Guitars): I. Allegretto
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Valses poéticos: Melodico (Arr. J. McFadden)
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Suite Castellana: III. Danza
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Suite española No. 1, Op. 47 (Arr. N. Kraft for Guitar): V. Asturias "Leyenda"
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4 Mazurkas: No. 3, Marieta
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Danzas fantasticas, Op. 22: Danzas fantasticas (Fantastic Dances), Op. 22: III. Orgia
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Renaissance Era Classical
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Spanish Classical Masterpieces
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Guitar (Eternal)
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Sáinz de la Maza: Guitar Music
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Homs: Music for Guitar & Guitar Duo
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track: Piano Suite "Entre dues línies" (Version for 2 Guitars): I. Allegretto

Milán: El Maestro
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  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 10
track: Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 20
track: Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 21
track: Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 2
track: Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 3
track: Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 5
track: Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 6

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191428910

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82431d737b026d909b629ed503a4ef1395795c0cd5a5f0ab3e8cd274488f9f0e. 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/HKI191428910.
date published: 2026-07-08T03:20:19Z

Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 10
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 110.224
additional property: Musical Key
  type: PropertyValue
  value: 6
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.29
additional property: Energy
  type: PropertyValue
  value: 0.032
additional property: Speechiness
  type: PropertyValue
  value: 0.068
additional property: Acousticness
  type: PropertyValue
  value: 0.995
additional property: Instrumentalness
  type: PropertyValue
  value: 0.917
additional property: Liveness
  type: PropertyValue
  value: 0.137
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.49
additional property: Loudness (dB)
  type: PropertyValue
  value: -32.083
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
  value: Minor

Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 20
type: MusicRecording
duration: PT4M1S
duration ms: 241573
explicit: false
by artist: Luis de Milán
by artist: José Antonio Escobar
in album: Milán: El Maestro
  type: MusicAlbum
  date published: 2015-07-03
isrc code: HKI191428920
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:15:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5d5fd2e3b510ff344dfce642ef68017e647c2210611e1f8067eaeb2ccb7de1b0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191428920
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5fd2e3b510ff344dfce642ef68017e647c2210611e1f8067eaeb2ccb7de1b0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKI191428920.
  date published: 2026-07-08T03:22:41Z
audio: Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 20
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 88.128
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.381
  additional property: Energy
    type: PropertyValue
    value: 0.037
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.946
  additional property: Liveness
    type: PropertyValue
    value: 0.141
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.572
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.298
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 21
type: MusicRecording
duration: PT2M39S
duration ms: 159333
explicit: false
by artist: Luis de Milán
by artist: José Antonio Escobar
in album: Milán: El Maestro
  type: MusicAlbum
  date published: 2015-07-03
isrc code: HKI191428921
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T20:05:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbd2bcc6b0d88ee8f5e88f0900dbb125499c126e31b15159b31d938ce4d4895de
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191428921
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2bcc6b0d88ee8f5e88f0900dbb125499c126e31b15159b31d938ce4d4895de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKI191428921.
  date published: 2026-07-08T03:53:27Z
audio: Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 21
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.098
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.502
  additional property: Energy
    type: PropertyValue
    value: 0.041
  additional property: Speechiness
    type: PropertyValue
    value: 0.069
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.961
  additional property: Liveness
    type: PropertyValue
    value: 0.148
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.704
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.832
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 2
type: MusicRecording
duration: PT2M40S
duration ms: 160360
explicit: false
by artist: Luis de Milán
by artist: José Antonio Escobar
in album: Milán: El Maestro
  type: MusicAlbum
  date published: 2015-07-03
isrc code: HKI191428924
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T08:05:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbd3339b19e1faa1d9fb5ddf507630e4f0e85f623d641c0d5de4121c7f6d0b806
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/HKI191428924
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3339b19e1faa1d9fb5ddf507630e4f0e85f623d641c0d5de4121c7f6d0b806. 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/HKI191428924.
  date published: 2026-07-08T03:20:19Z
audio: Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 2
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.298
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.449
  additional property: Energy
    type: PropertyValue
    value: 0.027
  additional property: Speechiness
    type: PropertyValue
    value: 0.062
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.968
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.497
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.601
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 3
type: MusicRecording
duration: PT2M3S
duration ms: 123880
explicit: false
by artist: Luis de Milán
by artist: José Antonio Escobar
in album: Milán: El Maestro
  type: MusicAlbum
  date published: 2015-07-03
isrc code: HKI191428925
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T11:17:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbd7346f68d4515fc0da97e29b221c885ef65b3eb543824af19ca34bfdfe5deec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191428925
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7346f68d4515fc0da97e29b221c885ef65b3eb543824af19ca34bfdfe5deec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI191428925.
  date published: 2026-07-08T08:56:20Z
audio: Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 3
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.59
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.547
  additional property: Energy
    type: PropertyValue
    value: 0.031
  additional property: Speechiness
    type: PropertyValue
    value: 0.08
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.951
  additional property: Liveness
    type: PropertyValue
    value: 0.141
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.439
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.66
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 5
type: MusicRecording
duration: PT0M49S
duration ms: 49066
explicit: false
by artist: Luis de Milán
by artist: José Antonio Escobar
in album: Milán: El Maestro
  type: MusicAlbum
  date published: 2015-07-03
isrc code: HKI191428927
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:04:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb2360cda09ffefdfc350d4f9b66611767f4fcb4b7a93c41569a08eaac341854
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/HKI191428927
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2360cda09ffefdfc350d4f9b66611767f4fcb4b7a93c41569a08eaac341854. 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/HKI191428927.
  date published: 2026-07-08T03:20:19Z
audio: Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 5
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.169
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.559
  additional property: Energy
    type: PropertyValue
    value: 0.021
  additional property: Speechiness
    type: PropertyValue
    value: 0.063
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.906
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.862
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.343
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
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Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 6
type: MusicRecording
duration: PT1M22S
duration ms: 82826
explicit: false
by artist: Luis de Milán
by artist: José Antonio Escobar
in album: Milán: El Maestro
  type: MusicAlbum
  date published: 2015-07-03
isrc code: HKI191428928
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:58:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15efbea7223dbf35f9d090f3cd5261cbf06d0163b254eb9ee72d7577da005429
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191428928
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15efbea7223dbf35f9d090f3cd5261cbf06d0163b254eb9ee72d7577da005429. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI191428928.
  date published: 2026-07-08T08:56:20Z
audio: Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 6
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 165.706
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.386
  additional property: Energy
    type: PropertyValue
    value: 0.055
  additional property: Speechiness
    type: PropertyValue
    value: 0.088
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.946
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.637
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.624
  additional property: Key Name
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    value: E
  additional property: Mode Name
    type: PropertyValue
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Guitar Music of Colombia
type: MusicAlbum
date published: 2015-01-06

Escobar, Jose Antonio: Guitar Music of Chile
type: MusicAlbum
date published: 2008-02-26

Modinha
type: MusicAlbum
date published: 2008-01-01

Guitar Recital: Jose Antonio Escobar
type: MusicAlbum
date published: 2001-08-10

Elegía por Violeta Parra
type: MusicAlbum
date published: 2023-10-06

Habanera
type: MusicAlbum
date published: 2023-07-03

Nana
type: MusicAlbum
date published: 2023-04-29

Impresiones de Aranjuez
type: MusicAlbum
date published: 2018-06-25

Music for Book Lovers: Classical Music for Reading
type: MusicAlbum
date published: 2019-11-22

Los Exitos de Guitarra Española (Volumen I)
type: MusicAlbum
date published: 2014-07-20

Classical Music from Around the World
type: MusicAlbum
date published: 2014-05-27

15 Grandes de la Guitarra Española Vol. 1
type: MusicAlbum
date published: 2014-10-12

15 Grandes de Guitarra
type: MusicAlbum
date published: 2013-08-21

Classical Hidden Gems, Vol. 6
type: MusicAlbum
date published: 2024-11-15