L-Y

Recording by Tom Lehrer.

Recording identifiers

ISRC
USSE91031704
CopyrightID (CopyrightChains transaction hash)
0x8ad9af454d20abfe2a77896cba491fe69c54e5775b854e12ad895a5d07833ef7
Copyright registration time
2026-06-18T12:09:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:25482fc85e73269c7e800abfa0bdbbacbd04f99fea5a9b62a7cff8bdd3845ff6

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.