Jascha Horenstein
type: MusicGroup
genre: classical
genre: classical piano
description: thumb|Horenstein in 1956 Jascha Horenstein (; – 2 April 1973) was an American conductor. Biography Horenstein was born in Kiev, Russian Empire (now Kyiv, Ukraine), into a wealthy Jewish family. He w
popularity: 24
followers: 1051
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab812cacd9ebb63589eb83849374439833fca469fd7c224ad571c92abd9763ce. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af70763e-c9b1-4ee1-84d4-00e44eee18d9.json and https://artists.proofprofile.net/proofs/artist/af70763e-c9b1-4ee1-84d4-00e44eee18d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: Beethoven - Symphony No. 9 "Choral"
  type: MusicAlbum
  date published: 2011-01-01
album: Mozart: Requiem in D Minor, K. 626
  type: MusicAlbum
  date published: 2001-01-01
album: Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral"
  type: MusicAlbum
  date published: 2001-01-01
album: Mozart: Messe, K. 317 "Du couronnement" & Vesperae solennes de confessore, K. 339 (Mono Version)
  type: MusicAlbum
  date published: 1958-01-01
album: Anton Bruckner - The Collection
  type: MusicAlbum
  date published: 2022-05-04
album: Strauss: Don Juan - Brahms: Symphony No. 2
  type: MusicAlbum
  date published: 2014-02-01
album: Jascha Horenstein: Broadcast Performances from Paris, 1952-1966
  type: MusicAlbum
  date published: 2013-07-02
album: A To Z Of Conductors
  type: MusicAlbum
  date published: 2007-11-11