Piano Quartet in G Major, Op. 202, No. 1: I. Allegro

Recording identifiers

ISRC

CH1220909051

Release date of the album this recording appears on

2011-07-05

CopyrightID (CopyrightChains transaction hash)

0x3c9c1926f28ac2acc7672ccb50f13222b441c0298ca2cf7ddf75fda8dd5f81dd

Copyright registration time

2026-07-07T16:55:42+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:2bceed7048365af3dd90cc5a2ea0f396b2f329a21952bc946893bdfdc22ffd39

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CH1220909051

What this proof establishes

This recording was released in 2011, 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.