Sifting

Recording by Nirvana.

Recording identifiers

ISRC
USSUB0983411
CopyrightID (CopyrightChains transaction hash)
0xeac4a3bfc7aa806cd4013642ebe75cf835363399e69557439702adc8cc0707d0
Copyright registration time
2026-06-04T09:16:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T17:25:41Z
Bitcoin block
953536
Canonical record hash
sha256:f3f284b54a35eeb3010ad9cd6ea8f027adcc4cd57a2891a837420523a1f665df

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.