Cuarto Grado
type: MusicGroup
genre: salsa
genre: salsa romantica
popularity: 30
followers: 16450
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x24059ed6f82849b6988b4896a8f8c12eec3dc02e33f2566be99399754b7992c1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6ec19482-ecbd-4f3b-b31f-5cf505be14a8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6ec19482-ecbd-4f3b-b31f-5cf505be14a8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6ec19482-ecbd-4f3b-b31f-5cf505be14a8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x24059ed6f82849b6988b4896a8f8c12eec3dc02e33f2566be99399754b7992c1","name":"Cuarto Grado","registered_at":"2026-06-12T00:32:34Z","symbol":"NIM0143240","token_address":"0xfb8a780efeb8afdaf2f92a725ab95f359206f8eb","type":"artist","uuid":"6ec19482-ecbd-4f3b-b31f-5cf505be14a8"}
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 0x24059ed6f82849b6988b4896a8f8c12eec3dc02e33f2566be99399754b7992c1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ec19482-ecbd-4f3b-b31f-5cf505be14a8.json and https://artists.proofprofile.net/proofs/artist/6ec19482-ecbd-4f3b-b31f-5cf505be14a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x24059ed6f82849b6988b4896a8f8c12eec3dc02e33f2566be99399754b7992c1","name":"Cuarto Grado","registered_at":"2026-06-12T00:32:34Z","symbol":"NIM0143240","token_address":"0xfb8a780efeb8afdaf2f92a725ab95f359206f8eb","type":"artist","uuid":"6ec19482-ecbd-4f3b-b31f-5cf505be14a8"}
album: Quisiera Verte
  type: MusicAlbum
  date published: 2014-06-14
album: Palo Pao
  type: MusicAlbum
  date published: 2014-08-11
album: Hace Calor
  type: MusicAlbum
  date published: 2014-09-05
album: Ya Te Olvidé
  type: MusicAlbum
  date published: 2015-10-23
  track: Ya Te Olvidé
    type: MusicRecording
    duration: PT4M49S
    duration ms: 289144
    explicit: false
    by artist: Cuarto Grado
    in album: Ya Te Olvidé
      type: MusicAlbum
      date published: 2015-10-23
    genre: salsa
    genre: salsa romantica
    isrc code: ESA011989219
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T06:47:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7242b7906672f9ce102e32f58d55b8143ea740c7ae1a42b744016ccce8128a17
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011989219
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x7242b7906672f9ce102e32f58d55b8143ea740c7ae1a42b744016ccce8128a17. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA011989219.
      date published: 2026-07-04T10:04:33Z
    audio: Ya Te Olvidé
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 93.935
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.745
      additional property: Energy
        type: PropertyValue
        value: 0.951
      additional property: Speechiness
        type: PropertyValue
        value: 0.092
      additional property: Acousticness
        type: PropertyValue
        value: 0.354
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.125
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.554
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.725
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Abrázame Fuerte
  type: MusicAlbum
  date published: 2017-11-28
album: Abrázame Fuerte
  type: MusicAlbum
  date published: 2017-11-28
album: Abrázame Fuerte
  type: MusicAlbum
  date published: 2017-11-28
  track: Por Qué Insistes
    type: MusicRecording
    duration: PT4M11S
    duration ms: 251156
    explicit: false
    by artist: Cuarto Grado
    in album: Abrázame Fuerte
      type: MusicAlbum
      date published: 2017-11-28
    genre: salsa
    genre: salsa romantica
    isrc code: QZ5AB1805577
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T12:58:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5c5b9aaad09c1eee9ecca55832263d99933ca4a6925f235740fb4c6d04560e7c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1805577
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0x5c5b9aaad09c1eee9ecca55832263d99933ca4a6925f235740fb4c6d04560e7c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ5AB1805577.
      date published: 2026-07-05T18:48:28Z
    audio: Por Qué Insistes
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.003
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: No Vale
  track: Te Amo
album: Llorarás
album: Biri Biri Bam Bam
album: Mentiste
album: Bésame
album: Tómame
album: Me Confundes
album: Vete Con Ella
album: Perdóname
album: Solo Pido
album: Amarte Así
album: COMO ENTENDER (Versión Acústica)
album: Vete con Ella
album: Bésame (Acústico)
album: Te Amo
album: Bésame Despacio
album: Que Te Vaya Bien
album: Homenaje A Celia Cruz
album: Cuarto Grado En Letra De Otro Salsa Urbana
album: DIMELO
album: Vive Tu Vida

Danceability
type: PropertyValue
value: 0.699

Energy
type: PropertyValue
value: 0.815

Speechiness
type: PropertyValue
value: 0.034

Acousticness
type: PropertyValue
value: 0.601

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.096

Valence (Positivity)
type: PropertyValue
value: 0.861

Loudness (dB)
type: PropertyValue
value: -3.916

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major

No Vale
type: MusicRecording
duration: PT3M32S
duration ms: 212370
explicit: false
by artist: Cuarto Grado
in album: Abrázame Fuerte
  type: MusicAlbum
  date published: 2017-11-28
genre: salsa
genre: salsa romantica
isrc code: QZ5AB1805578
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T06:56:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcca12d3abbbe67001a28a76eb76a6e04407296e4d8ad5828368da51527d6576e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956634
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956634
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1805578
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T10:04:33Z
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 0xcca12d3abbbe67001a28a76eb76a6e04407296e4d8ad5828368da51527d6576e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ5AB1805578.
  date published: 2026-07-04T10:04:33Z
audio: No Vale
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 160.057
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.68
  additional property: Energy
    type: PropertyValue
    value: 0.84
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.21
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.235
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.721
  additional property: Loudness (dB)
    type: PropertyValue
    value: -4.01
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Te Amo
type: MusicRecording
duration: PT4M53S
duration ms: 293584
explicit: false
by artist: Cuarto Grado
in album: Abrázame Fuerte
  type: MusicAlbum
  date published: 2017-11-28
genre: salsa
genre: salsa romantica
isrc code: QZ5AB1805579
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T21:32:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9ea6127a7c8a87da9a621f6c23f32177ec6a063536f0beaedbd5a3b6778c7dc5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958331
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958331
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1805579
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T00:35:01Z
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 0x9ea6127a7c8a87da9a621f6c23f32177ec6a063536f0beaedbd5a3b6778c7dc5. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:01Z), 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/QZ5AB1805579.
  date published: 2026-07-17T00:35:01Z
audio: Te Amo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 83
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.37
  additional property: Energy
    type: PropertyValue
    value: 0.9
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.088
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.577
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.728
  additional property: Loudness (dB)
    type: PropertyValue
    value: -1.464
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Llorarás
type: MusicAlbum
date published: 2018-01-05
track: Llorarás
  type: MusicRecording
  duration: PT4M50S
  duration ms: 290475
  explicit: false
  by artist: Cuarto Grado
  in album: Llorarás
    type: MusicAlbum
    date published: 2018-01-05
  genre: salsa
  genre: salsa romantica
  isrc code: ESA011900104
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T02:33:04+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5adfa98d6e58deb4f5720ab875df8f3ae3b073a5b036a0454a9a38c7e6bba47a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958228
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958228
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011900104
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T05:34:55Z
  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 0x5adfa98d6e58deb4f5720ab875df8f3ae3b073a5b036a0454a9a38c7e6bba47a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:55Z), 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/ESA011900104.
    date published: 2026-07-16T05:34:55Z
  audio: Llorarás
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 167.927
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.566
    additional property: Energy
      type: PropertyValue
      value: 0.917
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.529
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.107
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.717
    additional property: Loudness (dB)
      type: PropertyValue
      value: -2.561
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Biri Biri Bam Bam
type: MusicAlbum
date published: 2018-01-05

Biri Biri Bam Bam
type: MusicAlbum
date published: 2018-01-05

Llorarás
type: MusicAlbum
date published: 2018-01-05

Mentiste
type: MusicAlbum
date published: 2018-02-23

Mentiste
type: MusicAlbum
date published: 2018-02-23

Mentiste
type: MusicAlbum
date published: 2018-02-23

Bésame
type: MusicAlbum
date published: 2019-02-07

Bésame
type: MusicAlbum
date published: 2019-02-07

Tómame
type: MusicAlbum
date published: 2019-09-20

Me Confundes
type: MusicAlbum
date published: 2019-11-19

Vete Con Ella
type: MusicAlbum
date published: 2019-12-06

Vete Con Ella
type: MusicAlbum
date published: 2019-12-06

Perdóname
type: MusicAlbum
date published: 2020-08-06
track: Perdóname
  type: MusicRecording
  duration: PT4M54S
  duration ms: 294813
  explicit: false
  by artist: Cuarto Grado
  in album: Perdóname
    type: MusicAlbum
    date published: 2020-08-06
  genre: salsa
  genre: salsa romantica
  isrc code: ESA011873398
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T18:04:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe549665e9b0890fd024d238f10f90f5e34c0ccc6da5a780de3844e0b342c312e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958924
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958924
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011873398
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T21:12:47Z
  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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    date published: 2026-07-20T21:12:47Z
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    additional property: Valence (Positivity)
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Solo Pido
type: MusicAlbum
date published: 2022-01-28

Amarte Así
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date published: 2022-05-12
track: Amarte Así
  type: MusicRecording
  duration: PT4M1S
  duration ms: 241445
  explicit: false
  by artist: Cuarto Grado
  in album: Amarte Así
    type: MusicAlbum
    date published: 2022-05-12
  genre: salsa
  genre: salsa romantica
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd394a8b10d86153dd3dbe1aebd758c5cd494afb225fd119d0755645cde803213. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:37Z), 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/COAF42290836.
    date published: 2026-07-20T15:25:37Z
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    type: AudioObject
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      value: 1
    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Instrumentalness
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COMO ENTENDER (Versión Acústica)
type: MusicAlbum
date published: 2023-05-06

Vete con Ella
type: MusicAlbum
date published: 2023-05-13

Bésame (Acústico)
type: MusicAlbum
date published: 2023-05-26

Te Amo
type: MusicAlbum
date published: 2023-09-18

Bésame Despacio
type: MusicAlbum
date published: 2024-01-14

Que Te Vaya Bien
type: MusicAlbum
date published: 2024-04-11

Homenaje A Celia Cruz
type: MusicAlbum
date published: 2024-10-25

Cuarto Grado En Letra De Otro Salsa Urbana
type: MusicAlbum
date published: 2025-01-18

DIMELO
type: MusicAlbum
date published: 2025-05-26
track: DIMELO
  type: MusicRecording
  duration: PT1M31S
  duration ms: 91111
  explicit: false
  by artist: Cuarto Grado
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    type: MusicAlbum
    date published: 2025-05-26
  genre: salsa
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T10:52:33Z
  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 0xd596da724a71cba62355dd86e576f09b83828c257573429ec4ce5e8f9f5e8cbe. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:33Z), 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/COAF42502809.
    date published: 2026-07-20T10:52:33Z
  audio: DIMELO
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    additional property: Danceability
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Vive Tu Vida
type: MusicAlbum
date published: 2025-08-11
track: Vive Tu Vida
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  duration ms: 226200
  explicit: false
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    date published: 2025-08-11
  genre: salsa
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b218b81845b041dd2f23840b4d52af989a7aaba92b04e4db2a3776d60a7837. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/COAF42504579.
    date published: 2026-07-20T07:01:21Z
  audio: Vive Tu Vida
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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