くだらない

Recording by Hitsujibungaku.

Recording identifiers

ISRC
JPU902200958
CopyrightID (CopyrightChains transaction hash)
0x25890afdf6abc2112480aac2c9a5ad4b3370d8b895c83f06ece0cbb22e0fa1a5
Copyright registration time
2026-06-04T13:47:23+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:1346ac41b320d8974bf3e0870cf83a58edb4e09378cbf8200b0b338eae5c33fc

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.