よくある話～喪服の女編～

Recording identifiers

ISRC

JPPO00823940

Release date of the album this recording appears on

2017-12-20

CopyrightID (CopyrightChains transaction hash)

0xea27d1821bc79581bcf28fc6a84cfc481a9340ea1184557a128f98baf1c682b1

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-22T12:33:25Z

Bitcoin block

959128

Canonical record hash

sha256:424c0c998ddc690f1051067698562da38858dd83039c3a3a6431b5b8767f64a6

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC JPPO00823940

What this proof establishes

This recording was released in 2017, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.