Rachmaninov: Études-Tableaux, Op. 39: No. 4 in B Minor

Recording identifiers

ISRC

GBAYC8905621

Release date of the album this recording appears on

1991

CopyrightID (CopyrightChains transaction hash)

0x56b4b534d0d4074b9f5af7332a4e21c32085cdbc15f7b9a52b2312d6dfcb2c11

Copyright registration time

2026-07-07T19:09:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:0d208758281d51f121d70742e9a189e382f5b38cc99146cda343f4fbf5de3107

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC8905621

What this proof establishes

This recording was released in 1991, 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.