Forgotten Tune - Demo / Instrumental

Recording by Nirvana.

Recording identifiers

ISRC
USUM71309374
CopyrightID (CopyrightChains transaction hash)
0x7d4f926576d6f601fadcebf6ee51c099808e1c5220d37af0f7fd071241bb45cb
Copyright registration time
2026-06-06T15:54:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:53:06Z
Bitcoin block
953515
Canonical record hash
sha256:62b6b15bb03ba1bec0571e40c701f6e9dd583c6eeacd9b8782769037fb50979a

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.