Next Mass Extinction

Recording by Mudhoney.

Recording identifiers

ISRC
USSUB1822510
CopyrightID (CopyrightChains transaction hash)
0x0b7fdfeaa72c23465e73240a4220eea5aa796ab44273d25aa12ae30e42a7f8e7
Copyright registration time
2026-07-07T02:00:57+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:9c573579ba2eda3b4652f06840001367bbb6175418be9a0d6e6fc19046f0d218

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.