かなしみは・・・・

Recording by Masaharu Fukuyama.

Recording identifiers

ISRC
JPBV08900450
CopyrightID (CopyrightChains transaction hash)
0x32840730be2b22d519581e678e4da3367d0323ddea8e7495ab34c54a279f4fc1
Copyright registration time
2026-07-06T09:04:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:d234dfa837641df59958c6192bcc0de408f1f6b24b87fbc62450ef6902a42c61

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.