Tonight

Recording by Leonard Bernstein.

Recording identifiers

ISRC
GBCLS0102014
CopyrightID (CopyrightChains transaction hash)
0xdfbd3bdbe7449bb389fa07206c713e44c867719821a500fc763548439c8239e2
Copyright registration time
2026-06-25T17:21:53+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:032f3ed179f78f524c8cfd7a7a69d1a6f9fdb69177110b563230747dcce80746

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.