Marianna Prjevalskaya
type: MusicGroup
genre: celtic
genre: chamber music
genre: classical
description: Marianna Prjevalskaya (born 1982 in Chişinău) is a Russian concert pianist and a naturalized Spanish citizen, having settled in A Coruña in 1992. Education Born to a musical family, Prjevalskaya be
popularity: 2
followers: 81
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/953975
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/2bb665d9-0ef7-40e1-a5c0-c5a60103abf4.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/2bb665d9-0ef7-40e1-a5c0-c5a60103abf4.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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 0x0fdf907cd61807db7a0695468e5092ea8738ad191c1d825997da44b05bd401b9. Chain 2 (Bitcoin): anchored in block 953976 (2026-06-16T16:55:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bb665d9-0ef7-40e1-a5c0-c5a60103abf4.json and https://artists.proofprofile.net/proofs/artist/2bb665d9-0ef7-40e1-a5c0-c5a60103abf4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:55:36Z
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album: Marianna Prjevalskaya: Piano Recital
  type: MusicAlbum
  date published: 2012-08-07
album: Marianna Prjevalskaya: Piano Recital
  type: MusicAlbum
  date published: 2012-08-07