Bartek Niziol
type: MusicGroup
genre: chamber music
popularity: 4
followers: 179
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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 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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ac085a3adcfebc2b4393376b4e11273feb76f99ac40354d0127d414355b268. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de3b6984-209d-4ee3-9aae-a2227419f7a8.json and https://artists.proofprofile.net/proofs/artist/de3b6984-209d-4ee3-9aae-a2227419f7a8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
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album: E. Ysaÿe: 6 Sonaten für Violine Solo Opus 27
  type: MusicAlbum
  date published: 2011-01-21
album: Mendelssohn: Violin Concerto in D Minor - Tchaikovsky: Serenade in C Major
  type: MusicAlbum
  date published: 2013-08-01
album: Mendelssohn: Violin Concerto in D Minor - Tchaikovsky: Serenade in C Major
  type: MusicAlbum
  date published: 2013-08-01
album: Polish Violin Duos
  type: MusicAlbum
  date published: 2013-09-01
album: Polish Violin Duos
  type: MusicAlbum
  date published: 2013-09-01