アディショナルタイム

Recording by Hinatazaka46.

Recording identifiers

ISRC
JPU902102789
CopyrightID (CopyrightChains transaction hash)
0x51429241f8ecd642afda097174c9a2327a17f73c321c6b65c0e46cbb02f635e5
Copyright registration time
2026-06-05T04:59:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T17:25:41Z
Bitcoin block
953536
Canonical record hash
sha256:16df3a5845b86cb7eec528c9a072526b34aed193e55a2152598e5704d32de8fb

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.