Sour Times

Recording by Portishead.

Recording identifiers

ISRC
GBAQT9400032
CopyrightID (CopyrightChains transaction hash)
0xaacb9cd4b9cb4eaa8289cb8a151288bf783570d649cc5cad61fe6a3bae073f6f
Copyright registration time
2026-06-01T09:16:16+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:cb3c11771db15b0de9ef732af9250878b7ffb09cc3368f5c202877529e562c07

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.