Piano Sonata No. 11 in A Major, K. 331: 1. Theme (Andante grazioso)

Recording identifiers

ISRC

GBF077311901

Release date of the album this recording appears on

2021-02-08

CopyrightID (CopyrightChains transaction hash)

0xe7d95af1ee8bbdbbe90a481d02a56b5cc25d4964afb6568b14090848a4d9b2c9

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T12:24:41Z

Bitcoin block

960397

Canonical record hash

sha256:1fc08c0715713cdf98b96eb1b5f92e8f92f980a61499ade35b95fb18a72693d3

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF077311901

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.