大事な時間(小嶋陽菜、篠田麻里子、高橋みなみ、前田敦子、板野友美、大島優子、柏木由紀、渡辺麻友)

Recording identifiers

ISRC

JPKI01214330

CopyrightID (CopyrightChains transaction hash)

0x8e4636fb5dcc5f4cb516799fb2e08d6b69a38a6160617d42aa15263d9bbc18b3

Copyright registration time

2026-07-29T13:25:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T13:38:16Z

Bitcoin block

960113

Canonical record hash

sha256:0ca6c2c0c4651962b0137aa47054e1990b88a1eeae8d72925a912ebeda66274d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.