Piano Sonata No. 11 in A Major, K. 331 "Alla turca": 1b. Variation 1

Recording identifiers

ISRC

FRUM72101667

Release date of the album this recording appears on

2021-09-17

CopyrightID (CopyrightChains transaction hash)

0x9cbd7d9dde8ebb4cf1d5926a0e2eed28ec26274154442bbe0dded8b2a2a7ed35

Copyright registration time

2026-07-31T19:49:17+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T19:53:57Z

Bitcoin block

960456

Canonical record hash

sha256:b1c9af75a462147e165e05badce6abbae02713ff013f3e37e967dec8820cb1f0

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC FRUM72101667

What this proof establishes

This recording was released in 2021, 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.