年下の男の子

Recording by AKB48.

Recording identifiers

ISRC
JPPO02405853
CopyrightID (CopyrightChains transaction hash)
0x78798c28ed6986fec1a251d09edf1057ccb87dfdc79eaab36da5d68b7e584838
Copyright registration time
2026-06-11T21:15:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:cf11ad8fa21970c05cfef04306caa9d85f2301ddb3ebc9164dd0150ca01fe4a8

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.