Piano Sonata No. 5: I. Allegro tranquillo

Recording by Sergei Prokofiev.

Recording identifiers

ISRC
USHM19108701
CopyrightID (CopyrightChains transaction hash)
0xbb0095e6482e61f688752d5fec3b42bf0d27a9b5bc1032e3f362e7fd1de131d4
Copyright registration time
2026-07-07T07:24:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:d7551191ee88ecdb70b67f86d40f900492e988d6149ffba11683824bc7905b6a

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.