Two of us

Recording by Haruka Tomatsu.

Recording identifiers

ISRC
JPX401600075
CopyrightID (CopyrightChains transaction hash)
0x94b0420701cc097a75f4e27c131e2835c489d7c23107ee9bcf3d7aaad9f2a008
Copyright registration time
2026-06-09T01:20:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:e7a68787ea7147f4861e8e53fe10f593f4fb568a9981221f2f06a291e9f7722c

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.