キミがいないワタシ ...友達には戻れない...

Recording identifiers

ISRC

JPZ921112109

CopyrightID (CopyrightChains transaction hash)

0xb00cc6ee6eca00424743702c4e76c5a9123a601188697cf9215da9a9e1f61db4

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T23:51:35Z

Bitcoin block

960481

Canonical record hash

sha256:1d192042ea626dec4469352da254b30a1a5150835eafec984a012e2fa1c667b8

• 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.