Pennyroyal Tea

Recording by Nirvana.

Recording identifiers

ISRC
USGF19960709
CopyrightID (CopyrightChains transaction hash)
0x126f07b92a919ce70f330c1f46708062c53c95ee72bd803f2653314aa7227e2c
Copyright registration time
2026-06-02T21:01:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:d7d2d3ea0b8fbcedd4aeaa4c8e2588fe5c3cffc1ee1808a7a94e56fcad616cc6

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.