U・BU

Recording by Kyoko Koizumi.

Recording identifiers

ISRC
JPVI08601140
CopyrightID (CopyrightChains transaction hash)
0xddb20c5fdedb83c15dfbe3f1d0e7254ba45788b25d2d519d470ba1e231417165
Copyright registration time
2026-07-07T02:48:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:53:27Z
Bitcoin block
957124
Canonical record hash
sha256:1e61d202dff7999c4eb92a2571952af8c7623925d8458a8657d2821b650eed3d

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.