Bright Smile

Recording by Kurt Cobain.

Recording identifiers

ISRC
USUM71514605
CopyrightID (CopyrightChains transaction hash)
0xbdfa433c4275d14f88df1099376521269ce913e5642b6f6d0c9632841cd138cb
Copyright registration time
2026-06-08T21:38:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:2a5bdb2b57035771aec9c4b1394af7618bc02c641d8c62114400867a95825f29

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.