BIRI x BIRI

Recording by Takanori Nishikawa.

Recording identifiers

ISRC
JPU901702778
CopyrightID (CopyrightChains transaction hash)
0x5957546332c6675c7b79866b0096daecda32aa7875a83a825f22e5d957d7d26f
Copyright registration time
2026-06-23T01:59:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:fac7529b126a9f1736e1bc7aa8048e4959f785f0062260a0aee2818461560560

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.