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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: Feria y Sevillanas
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album: Miami & the Florida Keys, Ambient Music
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album: Best of Traditional Greek Music & Sirtaki, The popular Dance of Greece
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-21T04:58:13Z
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  track: Aegina Island
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    subject of: OpenTimestamps Proof of Existence
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    audio: Aegina Island
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album: À la vie, à la mort : le temps des adieux (Musiques choisies pour cimetière et oraison)
album: Lettre à Elise, Polonaise héroïque, Marche funèbre
track: Bagatelle No. 59, Lettre à Elise
track: Conte Symphonique Pierre et le Loup (thème de Pierre)
track: Suite pour Orchestre de variété No.1, Op. 50b, Valse No.2

Bagatelle No. 59, Lettre à Elise
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:53:27Z
audio: Bagatelle No. 59, Lettre à Elise
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Conte Symphonique Pierre et le Loup (thème de Pierre)
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by artist: Sinfonietta Orchestra
by artist: Jean-Luc Barreau
in album: Classique Zen
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T15:42:38Z
audio: Conte Symphonique Pierre et le Loup (thème de Pierre)
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additional property: OTSVerifyInstructions
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Suite pour Orchestre de variété No.1, Op. 50b, Valse No.2
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by artist: Sinfonietta Orchestra
by artist: Jean-Luc Barreau
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:09:47Z
audio: Suite pour Orchestre de variété No.1, Op. 50b, Valse No.2
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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 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

Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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Best of Traditional Greek Music & Sirtaki, The popular Dance of Greece
type: MusicAlbum
date published: 2010-01-01

À la vie, à la mort : le temps des adieux (Musiques choisies pour cimetière et oraison)
type: MusicAlbum
date published: 2015-01-04

Lettre à Elise, Polonaise héroïque, Marche funèbre
type: MusicAlbum
date published: 2018-09-25