懐かしい気持ち

Recording by Junichi Matsumoto.

Recording identifiers

ISRC
JPVI01840110
CopyrightID (CopyrightChains transaction hash)
0x1ec3d5c790d6f21f2be778de49121a6f9b94550b6d635d7b3b3758d97293bf09
Copyright registration time
2026-07-29T22:42:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T22:48:59Z
Bitcoin block
960160
Canonical record hash
sha256:fa3a9eb72dbc06594f9f7ef7dcb38bd676ec631bbff112e98eaf5176688abd0d

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.