あの時 君は若かった

Recording by Hiroshi Kamayatsu.

Recording identifiers

ISRC
JPFL08900840
CopyrightID (CopyrightChains transaction hash)
0xc16ab6a4371da28bb35eca1588fb9341c9715f8c0df3f1911a1d4ba2c4ddf781
Copyright registration time
2026-06-19T21:22:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:9c206b151b76399101bfcea398439ab858d2ad944f1f38a2eb1fcc82571014f5

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.