Sour Times

Recording by Portishead.

Recording identifiers

ISRC
GBAQT9400032
Release date of the album this recording appears on
2020-09-25
CopyrightID (CopyrightChains transaction hash)
0xaacb9cd4b9cb4eaa8289cb8a151288bf783570d649cc5cad61fe6a3bae073f6f
Copyright registration time
2026-06-01T09:16:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:e5d3ed513c9250402eca23718c06d8c70adb40e3c2bb40f30f6b6602305ce11b

What this proof establishes

This recording was released in 2020, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.