Xurxo Lois Varela Díaz
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-20T21:47:54Z
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track: Canarios. Tablature Di Chitarrone Livre 4

Canarios. Tablature Di Chitarrone Livre 4
type: MusicRecording
duration: PT2M15S
duration ms: 135426
explicit: false
by artist: Giovanni Girolamo Kapsberger
by artist: Dolce Rima
by artist: Xurxo Lois Varela Díaz
by artist: Paula Brieba del Rincón
in album: Saffo Novella. Dúos i àries de soprano i baix continu de Barbara Strozzi (1619-1677)
  type: MusicAlbum
  date published: 2021-11-15
genre: medieval
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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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
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  date published: 2026-07-02T03:55:08Z
audio: Canarios. Tablature Di Chitarrone Livre 4
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  additional property: Key Name
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