Valentina La de Sabinosa
type: MusicGroup
genre: traditional music
description: Valentina Hernández, also known as Valentina la de Sabinosa, (Sabinosa, La Frontera, El Hierro, 1889–1976) was a Spanish singer of Canarian folk music. Thanks to her, music from the island of El Hierr
track: El Vivo
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  by artist: Valentina La de Sabinosa
  in album: Antologia del Folklore de Canarias, Vol 2
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    date published: 2021-10-25
  isrc code: ES71G2148220
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    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
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    date published: 2026-07-08T03:20:19Z
  audio: El Vivo
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Danceability
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track: Tango Herreño
  type: MusicRecording
  duration: PT1M37S
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  by artist: Valentina La de Sabinosa
  in album: Antologia del Folklore de Canarias, Vol 1
    type: MusicAlbum
    date published: 2021-10-18
  isrc code: ES71G2147232
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    date published: 2026-07-31T21:25:57Z
  audio: Tango Herreño
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    additional property: Danceability
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