Federico Ibarra
type: MusicGroup
popularity: 3
followers: 474
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa7bd057b917b2cc8e298c28c747aad2b978bd38765932f95d0231b634dd2f35c
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12011ffe-43fc-4ef5-b461-dec2a15250cf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12011ffe-43fc-4ef5-b461-dec2a15250cf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/12011ffe-43fc-4ef5-b461-dec2a15250cf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bd057b917b2cc8e298c28c747aad2b978bd38765932f95d0231b634dd2f35c. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12011ffe-43fc-4ef5-b461-dec2a15250cf.json and https://artists.proofprofile.net/proofs/artist/12011ffe-43fc-4ef5-b461-dec2a15250cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0xa7bd057b917b2cc8e298c28c747aad2b978bd38765932f95d0231b634dd2f35c","name":"Federico Ibarra","registered_at":"2026-06-15T19:49:57Z","symbol":"NIM0813719","token_address":"0xef42ac051dbd136a3373c2165abc1a354ce5bbe6","type":"artist","uuid":"12011ffe-43fc-4ef5-b461-dec2a15250cf"}
album: My Mexican Soul
  type: MusicAlbum
  date published: 2010-07-30
  track: Huapango (1941)
    type: MusicRecording
    duration: PT8M18S
    duration ms: 498360
    explicit: false
    by artist: José Pablo Moncayo
    by artist: Alondra de la Parra
    by artist: Philharmonic Orchestra of the Americas
    in album: My Mexican Soul
      type: MusicAlbum
      date published: 2010-07-30
    isrc code: USSM11000992
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-07T19:28:28+00:00
    additional property: CopyrightChainExplorerURL
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953515
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953515
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11000992
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T12:53:06Z
    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 0x7d13837a6de6f7cd9d8aa8b5bcdbef0b8de2fc2528db5e6bd2e66555aeb5295f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM11000992.
      date published: 2026-06-13T12:53:06Z
    audio: Huapango (1941)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.608
      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: 0.48
      additional property: Energy
        type: PropertyValue
        value: 0.454
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.909
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.909
      additional property: Liveness
        type: PropertyValue
        value: 0.079
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.439
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.721
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
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  track: Danzón No. 2 (1994)
    type: MusicRecording
    duration: PT9M26S
    duration ms: 566226
    explicit: false
    by artist: Arturo Márquez
    by artist: Alondra de la Parra
    by artist: Philharmonic Orchestra of the Americas
    in album: My Mexican Soul
      type: MusicAlbum
      date published: 2010-07-30
    isrc code: USSM11001001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: CopyrightRegisteredAt
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      value: https://explorer.copyrightchains.com/tx/0x65cd4f47da385f77298b0ccb5c189492e5b7781d3ded7f508c91385d5c698b5d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953515
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953515
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11001001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T12:53:06Z
    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 0x65cd4f47da385f77298b0ccb5c189492e5b7781d3ded7f508c91385d5c698b5d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM11001001.
      date published: 2026-06-13T12:53:06Z
    audio: Danzón No. 2 (1994)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.241
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
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        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.333
      additional property: Energy
        type: PropertyValue
        value: 0.34
      additional property: Speechiness
        type: PropertyValue
        value: 0.053
      additional property: Acousticness
        type: PropertyValue
        value: 0.963
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.878
      additional property: Liveness
        type: PropertyValue
        value: 0.053
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Melodía for Violin and Orchestra, Op. 1, "1890"
  track: Sensemayá (1938)
  track: Intermezzo de Atzimba (1900)
  track: El trópico (from H.P. Suite)
  track: Ínguesu (2003)
  track: Sobre las Olas
  track: Sinfonía No. 2 (1993)
album: Música sinfónica mexicana
album: Despertar al Sueño, Ópera en Un Acto
album: Leoncio y Lena, Ópera en Dos Actos
album: La Aniquilación de un Sueño y 8 Sonatas para Piano
album: Orestes Parte, Ópera en un acto
album: Obra Orquestal de Federico Ibarra
album: Música de Cámara de Federico Ibarra
album: El Pequeño Príncipe: Ópera en un Acto (Basada en el Libro de Saint-Exupéry)
album: Federico Ibarra: Obra Coral
album: Ibarra: Sonatas para Piano
album: El tiempo
album: Le grand tango
album: Conciertos y Chôro
album: Genio y Figura: Música Mexicana para Piano
album: En Clave: Piano Music of Marquez, Ibarra and Others
album: Canción de Luna
album: Un Viaje: Ponce, Mozart, Schubert, Armengol & Ibarra
album: Angulo, E.: Noche De Alebrijes / Ibarra, F.: 5 Miniaturas / Ponce, M.M.: Petite Suite Dans Le Style Ancien / Lavista, M.: 3 Bagatelas
album: Mexican Music for Harpsichord from the End of the 20th and Beginning of the 21st Centuries

Sinfonía No. 2 (1993)
type: MusicRecording
duration: PT9M38S
duration ms: 578840
explicit: false
by artist: Federico Ibarra
by artist: Alondra de la Parra
by artist: Philharmonic Orchestra of the Americas
in album: My Mexican Soul
  type: MusicAlbum
  date published: 2010-07-30
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f17eb06a5ad70655612eeeb07a6981b049dd089dbc50d2262a6be486164f8a. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/USSM11001004.
  date published: 2026-07-31T00:58:21Z
audio: Sinfonía No. 2 (1993)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.435
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.223
  additional property: Energy
    type: PropertyValue
    value: 0.316
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.921
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.914
  additional property: Liveness
    type: PropertyValue
    value: 0.082
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.069
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.35
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USSM11001004
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960330
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T00:58:21+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11001004
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960330
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960330
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T00:58:21+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 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

Valence (Positivity)
type: PropertyValue
value: 0.294

Loudness (dB)
type: PropertyValue
value: -14.112

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Minor

Melodía for Violin and Orchestra, Op. 1, "1890"
type: MusicRecording
duration: PT5M25S
duration ms: 325453
explicit: false
by artist: Gustavo E. Campa
by artist: Alondra de la Parra
by artist: Daniel Andai
by artist: Philharmonic Orchestra of the Americas
in album: My Mexican Soul
  type: MusicAlbum
  date published: 2010-07-30
isrc code: USSM11000993
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T20:32:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x143038180e284d101445e2a7e514bfc5fb27a2b9c53c3aeec988ffcca9051803
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11000993
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 0x143038180e284d101445e2a7e514bfc5fb27a2b9c53c3aeec988ffcca9051803. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USSM11000993.
  date published: 2026-07-02T05:09:12Z
audio: Melodía for Violin and Orchestra, Op. 1, "1890"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.282
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.149
  additional property: Energy
    type: PropertyValue
    value: 0.134
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.958
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.646
  additional property: Liveness
    type: PropertyValue
    value: 0.148
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.078
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.292
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sensemayá (1938)
type: MusicRecording
duration: PT6M37S
duration ms: 397053
explicit: false
by artist: Silvestre Revueltas
by artist: Alondra de la Parra
by artist: Philharmonic Orchestra of the Americas
in album: My Mexican Soul
  type: MusicAlbum
  date published: 2010-07-30
genre: early-modern-classical
genre: latin-classical
genre: mexican-classical
isrc code: USSM11001002
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T20:18:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd766ec507da57671f4e00be764338fb59303f29b261b3a30eba55a69e450eef2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956349
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956349
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11001002
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:34:59Z
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 0xd766ec507da57671f4e00be764338fb59303f29b261b3a30eba55a69e450eef2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USSM11001002.
  date published: 2026-07-02T11:34:59Z
audio: Sensemayá (1938)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 172.301
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.366
  additional property: Energy
    type: PropertyValue
    value: 0.474
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.871
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.815
  additional property: Liveness
    type: PropertyValue
    value: 0.096
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.421
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.746
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Intermezzo de Atzimba (1900)
type: MusicRecording
duration: PT5M2S
duration ms: 302226
explicit: false
by artist: Ricardo Castro
by artist: Alondra de la Parra
by artist: Philharmonic Orchestra of the Americas
in album: My Mexican Soul
  type: MusicAlbum
  date published: 2010-07-30
isrc code: USSM11000994
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T20:19:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x52c742c75a5748ff481675c937f8d2c051e59128cddc5bdf6a298b99d5c53bbd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956349
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956349
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11000994
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:34:59Z
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
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audio: Intermezzo de Atzimba (1900)
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El trópico (from H.P. Suite)
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audio: El trópico (from H.P. Suite)
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Ínguesu (2003)
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Sobre las Olas
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Música sinfónica mexicana
type: MusicAlbum
date published: 1995-01-01

Despertar al Sueño, Ópera en Un Acto
type: MusicAlbum
date published: 2021-06-29

Leoncio y Lena, Ópera en Dos Actos
type: MusicAlbum
date published: 2021-04-10

La Aniquilación de un Sueño y 8 Sonatas para Piano
type: MusicAlbum
date published: 2021-02-18

Orestes Parte, Ópera en un acto
type: MusicAlbum
date published: 2019-06-03

Obra Orquestal de Federico Ibarra
type: MusicAlbum
date published: 2019-06-03

Música de Cámara de Federico Ibarra
type: MusicAlbum
date published: 2018-06-12

El Pequeño Príncipe: Ópera en un Acto (Basada en el Libro de Saint-Exupéry)
type: MusicAlbum
date published: 2018-06-12

Federico Ibarra: Obra Coral
type: MusicAlbum
date published: 2015-08-02

Ibarra: Sonatas para Piano
type: MusicAlbum
date published: 2005-01-01

El tiempo
type: MusicAlbum
date published: 2001

Le grand tango
type: MusicAlbum
date published: 1997-01-01

Conciertos y Chôro
type: MusicAlbum
date published: 2000-01-01

Genio y Figura: Música Mexicana para Piano
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date published: 2009-04-11

En Clave: Piano Music of Marquez, Ibarra and Others
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date published: 2023-08-01

Canción de Luna
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date published: 1999

Un Viaje: Ponce, Mozart, Schubert, Armengol & Ibarra
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date published: 2004-08-21

Angulo, E.: Noche De Alebrijes / Ibarra, F.: 5 Miniaturas / Ponce, M.M.: Petite Suite Dans Le Style Ancien / Lavista, M.: 3 Bagatelas
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date published: 2003-01-01

Mexican Music for Harpsichord from the End of the 20th and Beginning of the 21st Centuries
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date published: 2006-01-18