Études-Tableaux, Op. 39: I. Allegro agitato

Recording by Sergei Rachmaninoff.

Recording identifiers

ISRC
DEN961003890
CopyrightID (CopyrightChains transaction hash)
0x9dba3c05616e7863b6641c1ba9f94c305b8323970a8c2045523541851835c06d

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T14:36:16Z
Bitcoin block
960264
Canonical record hash
sha256:fe90d699c6e77b64d95f6eef949b6ad7f8464e21706a8013ab5d9936aac6d1ed

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.