Not Now John

Recording by Pink Floyd.

Recording identifiers

ISRC
GBN9Y1100132
CopyrightID (CopyrightChains transaction hash)
0xac1bf65412bf847b0c4a393453d0a3be32b59979c46532091ac556eb66f5ad59
Copyright registration time
2026-06-04T10:04:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:7f7b106743f65389d1f26a2c4cf3502dc738a68c42f97b87136b340f4c60d5d7

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.