Piano Sonata No. 2 in F Major, K. 280: II. Adagio

Recording identifiers

ISRC

DEF056000652

Release date of the album this recording appears on

1993-01-01

CopyrightID (CopyrightChains transaction hash)

0x9b2a5baeaf9fcf0194c54365f120ff35eea466f3db762f8e7a66b149f9761a47

Copyright registration time

2026-06-20T18:51:41+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T20:41:57Z

Bitcoin block

957084

Canonical record hash

sha256:3a53c33ea94fc348fcb8864f77eb6bde84e740a56357bc959e52b5b73d8a7b0d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056000652

What this proof establishes

This recording was released in 1993, 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.