Sierra Negra
type: MusicGroup
genre: cumbia norteña
genre: duranguense
genre: norteño
genre: norteño-sax
description: thumb|right|Sierra Negra and Pico de Orizaba (viewed from the south) Sierra Negra (also, and perhaps more properly, Cerro La Negra) is an extinct volcano located in the Mexican state of Puebla, close
popularity: 8
followers: 902
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-21T07:29:20Z
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album: Ya No Vives en Mi
  type: MusicAlbum
  date published: 2017-10-08
album: Somos Prohibidos
  type: MusicAlbum
  date published: 2018-07-20
album: En Vivo Desde la Finca
  type: MusicAlbum
  date published: 2021-08-01
album: Polkeando Desde La Ciudad
  type: MusicAlbum
  date published: 2021-08-31
album: Como Lo Hice Yo
  type: MusicAlbum
  date published: 2022-02-01
album: Tus Desprecios
  type: MusicAlbum
  date published: 2022-04-23
album: Te Regalo Mi Rival
  type: MusicAlbum
  date published: 2022-06-22
album: Ahí Donde Me Ven
  type: MusicAlbum
  date published: 2022-10-19
album: Desnuda
  type: MusicAlbum
  date published: 2022-12-22
album: Nuevo Comienzo
  type: MusicAlbum
  date published: 2023-02-10
album: Nuevo Comienzo
  type: MusicAlbum
  date published: 2023-02-10
album: Todo Porque Te Amo
  type: MusicAlbum
  date published: 2023-02-14
album: Fin de Semana
  type: MusicAlbum
  date published: 2023-02-17
album: Fin de Semana
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  date published: 2023-02-17
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    explicit: false
    by artist: Sierra Negra
    in album: Fin de Semana
      type: MusicAlbum
      date published: 2023-02-17
    genre: cumbia norteña
    genre: duranguense
    genre: norteño
    genre: norteño-sax
    isrc code: ARC572310224
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-19T17:49:48Z
    audio: Fin de Semana
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      additional property: Key Name
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        value: C#
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album: Monotonía
  type: MusicAlbum
  date published: 2023-04-28
album: Monotonía
  type: MusicAlbum
  date published: 2023-04-28
album: En Vivo Desde La Finca
  type: MusicAlbum
  date published: 2023-08-25
album: Polkeando Desde La Ciudad
  type: MusicAlbum
  date published: 2023-08-25
album: Somos Prohibidos
  type: MusicAlbum
  date published: 2023-08-25
  track: Mi Mayor Necesidad
    type: MusicRecording
    duration: PT2M53S
    duration ms: 173358
    explicit: false
    by artist: Sierra Negra
    in album: Somos Prohibidos
      type: MusicAlbum
      date published: 2023-08-25
    genre: cumbia norteña
    genre: duranguense
    genre: norteño
    genre: norteño-sax
    isrc code: QMDA62319582
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    subject of: OpenTimestamps Proof of Existence
    audio: Mi Mayor Necesidad
album: Live
album: Ya Me Canse Las Caguamas

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CopyrightStatus
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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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value: 958567

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/958567

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62319582

OTSTimestamp
type: PropertyValue
value: 2026-07-18T15:22:40Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edf3c100ef69af0104b3292fd1855d7e177a0a59a4c4d8e230fbf3b818db550. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62319582 — a six-check JSON result.
date published: 2026-07-18T15:22:40Z

Mi Mayor Necesidad
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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  value: -5.227
additional property: Key Name
  type: PropertyValue
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additional property: Mode Name
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Live
type: MusicAlbum
date published: 2023-08-25

Ya Me Canse Las Caguamas
type: MusicAlbum
date published: 2024-01-12