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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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track: The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": II. Largo
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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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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a4677dacf6807aadb7fb9394cb7c67db1837fd0e0a71c6d480c5d41ac52fdb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131402160.
    date published: 2026-06-13T12:47:07Z
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track: The Four Seasons, Violin Concerto No. 4 in F Minor, Rv 297 "L'inverno": II. Largo
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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track: Poems: No. 1, Though Your Sorrows Not
track: Songs: No. 3, The Pond Says
track: Cherubic Chant (Version for String Quartet)

Poems: No. 1, Though Your Sorrows Not
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T21:25:57Z
audio: Poems: No. 1, Though Your Sorrows Not
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Songs: No. 3, The Pond Says
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by artist: Julia Lezhneva
by artist: La Voce Strumentale
by artist: Dmitry Sinkovsky
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T03:13:03Z
audio: Songs: No. 3, The Pond Says
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Cherubic Chant (Version for String Quartet)
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by artist: La Voce Strumentale
by artist: Dmitry Sinkovsky
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T21:25:57Z
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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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