ずっと二人で

Recording identifiers

ISRC

JPPO01153496

CopyrightID (CopyrightChains transaction hash)

0xa9a34406c01f485957a61f836903df113716f9c656528c9dfd7c4e3bb517f133

Copyright registration time

2026-06-22T05:42:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:4e551b4cdd2396c26d45216284dfc810cec03f8499c9564e3f6fdf50f0803619

• 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.