Piano Sonata No. 3 in B-Flat Major, K. 281: I. Allegro

Recording identifiers

ISRC

DEN961800921

Release date of the album this recording appears on

2018-11-16

CopyrightID (CopyrightChains transaction hash)

0xd46651a2ef20ab211e9f9e7cbf18e7f6ae216160dcad1e83f4e16012c306a8b7

Copyright registration time

2026-06-21T21:42:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:f963ae1e154fdd7080ec4fa713d21c7e536fd2d1177d2b40a96de7d7dfbc4a47

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC DEN961800921

What this proof establishes

This recording was released in 2018, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.