Heart-Shaped Box

Recording by Nirvana.

Recording identifiers

ISRC
USGF19960703
CopyrightID (CopyrightChains transaction hash)
0x14edb330bb481ccbe5bfcb89d02ceebc2db1878e6c6116d0f7089721d4f1a838
Copyright registration time
2026-06-01T03:00:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:be5d17bf8eb405997826d911661fd810ea9b9aa776fd2b00be3a9b7fdf3d3b46

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.