Piano Sonata No. 20 in G Major, Op. 49, No. 2: I. Allegro ma non troppo

Recording identifiers

ISRC

DEF056400261

Release date of the album this recording appears on

2019-09-13

CopyrightID (CopyrightChains transaction hash)

0x6c39d64c1241b6684203eada38aaea60a057a2ebb313b8494e4211b444fe7774

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T19:53:13Z

Bitcoin block

960455

Canonical record hash

sha256:f24dc4147a23a980a779d77b51a5fddd5cee79577fd087609ce555ea02b8c119

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056400261

What this proof establishes

This recording was released in 2019, 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.