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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T19:53:13Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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track: Piano Trio No. 6 in B-flat major Op. 70, No. 2: II. Allegretto
track: Piano Trio No. 6 in B-flat major Op. 70, No. 2: IV. Finale. Allegro

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Piano Trio No. 6 in B-flat major Op. 70, No. 2: II. Allegretto
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in album: Beethoven: Piano Trio No. 5, Op. 70 No. 1 & Piano Trio No. 6, Op. 70 No. 2
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  date published: 2024-04-26
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T17:29:52Z
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Piano Trio No. 6 in B-flat major Op. 70, No. 2: IV. Finale. Allegro
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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