West Side Story: Tonight

Recording by Leonard Bernstein.

Recording identifiers

ISRC
NLA508322505
CopyrightID (CopyrightChains transaction hash)
0xfcc6d9e6b833fcdc8e32dfb3a24dba9512387e32e4a9419cdaff9a70680fd407
Copyright registration time
2026-07-07T12:54:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:738211c47573d2eca0b8db9ba502f8546406c0a1072c357df789f587736a47f3

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.