Julio Cortázar
type: MusicGroup
description: Julio Florencio CortázarMontes-Bradley, Eduardo. "Cortázar sin barba". Editorial Debate. Random House Mondadori. p. 35, Madrid. 2005. (26 August 1914 – 12 February 1984; ) was an Argentine and natural
popularity: 16
followers: 4959
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x464a1d80c1a3535fb7a598bdc89bf52dddeb9fa478bb74e07d148897591c60c6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e1e3fe1d-243b-49fd-b875-508b2c4ba1a3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e1e3fe1d-243b-49fd-b875-508b2c4ba1a3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e1e3fe1d-243b-49fd-b875-508b2c4ba1a3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x464a1d80c1a3535fb7a598bdc89bf52dddeb9fa478bb74e07d148897591c60c6","name":"Julio Cortázar","registered_at":"2026-06-15T04:15:51Z","symbol":"NIM0679099","token_address":"0x846ffb15883d9250febd53520cc7fdff198ef6e8","type":"artist","uuid":"e1e3fe1d-243b-49fd-b875-508b2c4ba1a3"}
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 0x464a1d80c1a3535fb7a598bdc89bf52dddeb9fa478bb74e07d148897591c60c6. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1e3fe1d-243b-49fd-b875-508b2c4ba1a3.json and https://artists.proofprofile.net/proofs/artist/e1e3fe1d-243b-49fd-b875-508b2c4ba1a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T15:41:00Z
  text: {"copyright_id":"0x464a1d80c1a3535fb7a598bdc89bf52dddeb9fa478bb74e07d148897591c60c6","name":"Julio Cortázar","registered_at":"2026-06-15T04:15:51Z","symbol":"NIM0679099","token_address":"0x846ffb15883d9250febd53520cc7fdff198ef6e8","type":"artist","uuid":"e1e3fe1d-243b-49fd-b875-508b2c4ba1a3"}
album: Julio Cortázar por Él Mismo
  type: MusicAlbum
  date published: 2022-12-01
  track: Torito
    type: MusicRecording
    duration: PT17M26S
    duration ms: 1046626
    explicit: false
    by artist: Julio Cortázar
    in album: Julio Cortázar por Él Mismo
      type: MusicAlbum
      date published: 2022-12-01
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    additional property: CopyrightID
    additional property: CopyrightStatus
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      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2294639
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-14T22:45:25Z
    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 0x1c950a87ef715c0df3b6fd1ec6ea544c0d96efd3bb5b1dd3ea7fa4cec9018f17. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USL4Q2294639.
      date published: 2026-07-14T22:45:25Z
    audio: Torito
      type: AudioObject
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        type: PropertyValue
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.601
      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
        value: 0.882
      additional property: Acousticness
        type: PropertyValue
        value: 0.848
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.117
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.663
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.554
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Los Discursos del Pinchajeta
    type: MusicRecording
    duration: PT4M31S
    duration ms: 271080
    explicit: false
    by artist: Julio Cortázar
    in album: Julio Cortázar por Él Mismo
      type: MusicAlbum
      date published: 2022-12-01
    isrc code: USL4Q2294642
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9cf705c08c9245229e2d06f8444c74e9f14b492270c4a52a26dff34aea9203b8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2294642
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0x9cf705c08c9245229e2d06f8444c74e9f14b492270c4a52a26dff34aea9203b8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USL4Q2294642.
      date published: 2026-07-03T19:59:51Z
    audio: Los Discursos del Pinchajeta
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 181.25
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.594
      additional property: Energy
        type: PropertyValue
        value: 0.273
      additional property: Speechiness
        type: PropertyValue
        value: 0.515
      additional property: Acousticness
        type: PropertyValue
        value: 0.811
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.191
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.848
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Álbum Con Fotos / Sobremesa
track: Para Julio

Para Julio
type: MusicRecording
duration: PT2M19S
duration ms: 139221
explicit: false
by artist: Axel Fiks
by artist: Julio Cortázar
in album: Idilio
  type: MusicAlbum
  date published: 2018-09-03
isrc code: US7VG2014077
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T11:41:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce7ba1c205ed206cdac20560fb6ad240bb3ed57e6c75eb4854840abebd9265b2
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2014077
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7ba1c205ed206cdac20560fb6ad240bb3ed57e6c75eb4854840abebd9265b2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG2014077.
  date published: 2026-07-02T03:30:09Z
audio: Para Julio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.769
  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: 0.737
  additional property: Energy
    type: PropertyValue
    value: 0.408
  additional property: Speechiness
    type: PropertyValue
    value: 0.19
  additional property: Acousticness
    type: PropertyValue
    value: 0.711
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.182
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.324
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.833
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Loudness (dB)
type: PropertyValue
value: -15.816

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major

Álbum Con Fotos / Sobremesa
type: MusicRecording
duration: PT4M16S
duration ms: 256853
explicit: false
by artist: Julio Cortázar
in album: Julio Cortázar por Él Mismo
  type: MusicAlbum
  date published: 2022-12-01
isrc code: USL4Q2294643
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-14T21:18:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca7a6945ef7a77ea5eb994ab9d482cea4fee5a18c27b1c2cc76521c5bd1614b9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958067
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958067
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2294643
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-14T21:26:15Z
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 0xca7a6945ef7a77ea5eb994ab9d482cea4fee5a18c27b1c2cc76521c5bd1614b9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USL4Q2294643.
  date published: 2026-07-14T21:26:15Z
audio: Álbum Con Fotos / Sobremesa
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.122
  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: 0.616
  additional property: Energy
    type: PropertyValue
    value: 0.186
  additional property: Speechiness
    type: PropertyValue
    value: 0.371
  additional property: Acousticness
    type: PropertyValue
    value: 0.65
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.163
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.275
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.499
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major