Los mejores Villancicos - Canciones navideñas
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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
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album: Los niños cantores de Guadalupe
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  date published: 2000-04-22
album: Canciones de Navidad
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album: Todos tus Éxitos Navideños Favoritos
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  track: Rodolfo el Reno de la Naríz Roja
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    subject of: OpenTimestamps Proof of Existence
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  track: Es Nochebuena
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-30T01:51:26Z
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album: Una Navidad en Familia Junto al Piano
album: Feliz Navidad Traditional
album: Música Navideña Traditional para Toda la Familia
album: Canciones Navideñas Infantiles

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Una Navidad en Familia Junto al Piano
type: MusicAlbum
date published: 2015-12-13

Feliz Navidad Traditional
type: MusicAlbum
date published: 2017-12-14

Música Navideña Traditional para Toda la Familia
type: MusicAlbum
date published: 2017-12-21

Canciones Navideñas Infantiles
type: MusicAlbum
date published: 2020-12-14