負けず嫌い

Recording identifiers

ISRC

JPS809901309

Release date of the album this recording appears on

2015-08-26

CopyrightID (CopyrightChains transaction hash)

0xe0bb6bf3cabedc5e658e37f07ee7fcf2ad144dc5558952ceb9508c99d3013abb

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T08:38:45Z

Bitcoin block

960370

Canonical record hash

sha256:93fa920eb6b0e262095672fbc6bdcf8cc7ba394fbcd0e8ff51af039d771078bf

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC JPS809901309

What this proof establishes

This recording was released in 2015, 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.