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genre: tango
popularity: 15
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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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album: Resistiendo a la Tormenta
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  date published: 1980
album: Sonata Doméstica
  type: MusicAlbum
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album: Contra Vientos y Mareas
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album: Tomás Gubitsch : Sans cesse
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album: Ítaca
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album: Travesuras
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track: Toma que toma
track: Barisokhanda
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  by artist: Hughes De Courson
  by artist: Tomas Gubitsch
  by artist: Dobri Hristov Choir from Sofia
  by artist: Plovdiv's Children's Choir
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    date published: 2008-06-30
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-21T16:58:33Z
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track: La Bigoudine
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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track: Pepa Nzac Gnon Ma (traditionnel arr. P. Akendengué): Prélude de la Partitia pour violon no3
track: Mayingo (traditionnel arr. P. Akendengue): Fugue sur Mayingo (T. Gubitsch)

Toma que toma
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by artist: Tomas Gubitsch
by artist: Plovdiv`s Children`s Choir/Tomas Gubitsch
by artist: Radio Sofia Sinfonic Orchestra
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popularity: 20
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: Toma que toma
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Pepa Nzac Gnon Ma (traditionnel arr. P. Akendengué): Prélude de la Partitia pour violon no3
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by artist: Tomas Gubitsch
by artist: Vincent Cavelier
by artist: Elugu Ayong
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T21:42:15Z
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Mayingo (traditionnel arr. P. Akendengue): Fugue sur Mayingo (T. Gubitsch)
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Mayingo (traditionnel arr. P. Akendengue): Fugue sur Mayingo (T. Gubitsch)
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