どうしたらいいんだろう

Recording by Masaharu Fukuyama.

Recording identifiers

ISRC
JPBV09004420
CopyrightID (CopyrightChains transaction hash)
0x380e11e12e22353de840a5028836b7e4cbe372c3c34b5b031fdfb6f7f9edfc70
Copyright registration time
2026-07-06T20:35:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:43806865329f40bb4873e6cdff62fedd82b89cf0dc11f97bc9dd9a78b24ce6e1

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.