オトコのコ オンナのコ

Recording by Kyoko Koizumi.

Recording identifiers

ISRC
JPVI09624100
CopyrightID (CopyrightChains transaction hash)
0x05ca28697f7b96a63a9748b0230acea97117f33870df572f845a758d307d5273
Copyright registration time
2026-07-30T22:19:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T00:26:26Z
Bitcoin block
960327
Canonical record hash
sha256:931e28acfb91f26ddd6053d117f1adb91d4986cb6e5104be7fffbf4f3840c076

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.