Pennyroyal Tea - 2013 Mix

Recording by Nirvana.

Recording identifiers

ISRC
USUM71309362
CopyrightID (CopyrightChains transaction hash)
0x22dcbc46ad4d35c81a99250f38a5cd643b694e84943165d88b6b56b9a27c9bfa
Copyright registration time
2026-06-06T15:53:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:53:06Z
Bitcoin block
953515
Canonical record hash
sha256:7efbad93ba72863bd39d95a292959989eddff1ba184700071e3623a6bf9fce94

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.