Dumb - Demo / Instrumental

Recording by Nirvana.

Recording identifiers

ISRC
USUM71309367
CopyrightID (CopyrightChains transaction hash)
0xfd1c7735a4bb4ad42d1e1342b2d3b81a1591f78cba6d9620a0f552fcc2afc7f2
Copyright registration time
2026-06-07T06:03:38+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:53:06Z
Bitcoin block
953515
Canonical record hash
sha256:6a439e591f39a44eedc1df2e003ae711f88057deb0a402b156d38bd028b64450

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.