Vladimir Altshuler
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popularity: 2
followers: 1
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397ed060d2a408d64b7df97668b5c5606ab000457e1a550508255a6e62fdb6fd. Chain 2 (Bitcoin): anchored in block 953918 (2026-06-16T08:55:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ae4a9f9-b54b-44d0-b549-939bb8cb74a2.json and https://artists.proofprofile.net/proofs/artist/1ae4a9f9-b54b-44d0-b549-939bb8cb74a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:55:04Z
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album: Bach: Concertos for 1 & 2 Keyboards
  type: MusicAlbum
  date published: 2015-12-01
  track: Concerto for 2 Keyboards in C Minor, BWV 1062: II. Andante e piano

Concerto for 2 Keyboards in C Minor, BWV 1062: II. Andante e piano
type: MusicRecording
duration: PT6M24S
duration ms: 384902
explicit: false
by artist: Johann Sebastian Bach
by artist: Larissa Dedova
by artist: Mikhail Volchok
by artist: Leningrad Chamber Orchestra
by artist: Vladimir Altshuler
in album: Bach: Concertos for 1 & 2 Keyboards
  type: MusicAlbum
  date published: 2015-12-01
popularity: 1
genre: classical
genre: classical-piano
isrc code: USB8U1521920
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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: 2026-07-08T03:20:19Z
audio: Concerto for 2 Keyboards in C Minor, BWV 1062: II. Andante e piano
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  additional property: Key Name
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