Agnieszka Panasiuk
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followers: 22
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5286c8db8273a1faab4c093411daa062e34ff3faf285827e7c26cd40670c7eee. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/045c53ee-aa42-4e9e-add2-7fd8eb5d0e0b.json and https://artists.proofprofile.net/proofs/artist/045c53ee-aa42-4e9e-add2-7fd8eb5d0e0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
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album: Ávarp: Icelandic Chamber Music
  type: MusicAlbum
  date published: 2021-01-15
album: Ávarp: Icelandic Chamber Music
  type: MusicAlbum
  date published: 2021-01-15
track: Piano Sonata No. 1 in A Major "Der Main" in A Major: I. Ruhig bewegte Viertel

Piano Sonata No. 1 in A Major "Der Main" in A Major: I. Ruhig bewegte Viertel
type: MusicRecording
duration: PT2M19S
duration ms: 139200
explicit: false
by artist: Paul Hindemith
by artist: Agnieszka Panasiuk
in album: Hindemith: Piano Sonatas Nos. 1-3
  type: MusicAlbum
  date published: 2024-11-16
genre: classical-piano
genre: neoclassical
isrc code: PLA162406701
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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: 2026-07-08T08:56:20Z
audio: Piano Sonata No. 1 in A Major "Der Main" in A Major: I. Ruhig bewegte Viertel
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