Mara Valdez
type: MusicGroup
genre: corridos tumbados
genre: sierreño
popularity: 21
followers: 696
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4621dab96222e182cbefcff0efcc0d097f72dd34454ba92a89454037532707b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20cd4ccd-4b92-4388-a2b4-fa583b420bd4.json and https://artists.proofprofile.net/proofs/artist/20cd4ccd-4b92-4388-a2b4-fa583b420bd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
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album: Otra Ciudad
  type: MusicAlbum
  date published: 2023-06-15
album: La Fama
  type: MusicAlbum
  date published: 2023-09-08
album: Esperando X Ti
  type: MusicAlbum
  date published: 2023-10-07
album: Así No Me Sirves
  type: MusicAlbum
  date published: 2024-03-01
album: Me Llueven
  type: MusicAlbum
  date published: 2024-04-19
album: Ya No Seré
  type: MusicAlbum
  date published: 2024-05-24
album: Ojo De Loca
  type: MusicAlbum
  date published: 2024-05-31
album: Aparentar
  type: MusicAlbum
  date published: 2024-07-26
  track: Aparentar
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159250
    explicit: true
    by artist: Mara Valdez
    in album: Aparentar
      type: MusicAlbum
      date published: 2024-07-26
    genre: corridos tumbados
    genre: sierreño
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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/BK4DA2427646
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9dc2769e488479ad9b50d37c530f89cd445bcaf21d1a06bda9b16cac01d65c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BK4DA2427646.
      date published: 2026-07-02T16:51:38Z
    audio: Aparentar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.123
      additional property: Musical Key
        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
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      additional property: Energy
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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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        value: 0.866
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.695
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Sin Los Dos
  type: MusicAlbum
  date published: 2025-02-21
album: Se Hizo Mi Novio
  type: MusicAlbum
  date published: 2025-05-30
album: POR ESO ROMPIMOS
  type: MusicAlbum
  date published: 2025-06-27
track: Negociar Con El Diablo

Negociar Con El Diablo
type: MusicRecording
duration: PT2M24S
duration ms: 144230
explicit: false
by artist: Dan Sanchez
by artist: Mara Valdez
in album: Disfrutando El Proceso
  type: MusicAlbum
  date published: 2023-11-24
genre: corrido
genre: corridos-tumbados
genre: corridos-belicos
genre: electro-corridos
genre: dembow-belico
isrc code: QZ9QQ2300854
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ9QQ2300854
additional property: OTSTimestamp
  type: PropertyValue
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51be411979b0aad0351a0cad43a7875deab2f8389e93e31a7f6ee5e66247cd81. 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/QZ9QQ2300854.
  date published: 2026-07-02T03:30:09Z
audio: Negociar Con El Diablo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.45
  additional property: Musical Key
    type: PropertyValue
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  additional property: Danceability
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  additional property: Liveness
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  additional property: Loudness (dB)
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    type: PropertyValue
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