West Side Story: IV. The Dance at the Gym: a. Blues

Recording by Leonard Bernstein.

Recording identifiers

ISRC
DEF058430616
Release date of the album this recording appears on
1995-01-01
CopyrightID (CopyrightChains transaction hash)
0xc8b786773273d07ed339633ad0450fed7749615273b7fc0ad25e0928888c3c9f
Copyright registration time
2026-07-06T04:34:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:3047ece2f3144f41cf1b8fe0323b77d2f42c1c5d8b69d691b228a0cd7cbcb27a

What this proof establishes

This recording was released in 1995, 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.