José Barros
type: MusicGroup
genre: traditional music
genre: tropical music
description: thumb|275px| Cumbia festivities Corporation, José Barros house in El Banco. José Benito Barros or simply José Barros (March 21, 1915 – May 12, 2007) was a Colombian musician and composer. He composed
popularity: 9
followers: 1339
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additional property: CopyrightChainExplorerURL
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additional property: OTSProofURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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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 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc2a06efeeeb74c44ea76bcb569ff90284cf388d63998c9b42b8576517aa611. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63a26149-ca09-4876-9677-daad1607d43b.json and https://artists.proofprofile.net/proofs/artist/63a26149-ca09-4876-9677-daad1607d43b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:11:48Z
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album: 25 Anos (Remastered 2022)
  type: MusicAlbum
  date published: 1994-11-10
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  type: MusicAlbum
  date published: 2018-01-17
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  type: MusicAlbum
  date published: 2024-07-19
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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