休日の過ごし方

Recording by Kyoko Koizumi.

Recording identifiers

ISRC
JPVI09109570
CopyrightID (CopyrightChains transaction hash)
0x12965c5c563b40faa415d9cb3ec1bdead61a21499732b0fa14f3b473b983cb1c
Copyright registration time
2026-07-30T07:37:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T07:48:45Z
Bitcoin block
960222
Canonical record hash
sha256:469ad3e51f4ff75d49342929550d33f4809b8d1916310714b7f9334c08dd0eed

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.