Both Sides Now

Recording by Leonard Nimoy.

Recording identifiers

ISRC
USMC10346153
CopyrightID (CopyrightChains transaction hash)
0x2df80897c14e04276541ab88827ccba72b7e848de6c4a3a73cac1d284db48906
Copyright registration time
2026-07-07T00:29:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:a5ee7880df95fea1c184709e54b53705a721984b8cd66d211830636f782a155b

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.