世界に君一人だけ

Recording by ROMANKAKUMEI.

Recording identifiers

ISRC
JPE502400052
CopyrightID (CopyrightChains transaction hash)
0x69f7d770a6bba261e3721d8c03bb723dff3f53cf7ba5cd586f726d2e220c7bfa
Copyright registration time
2026-06-09T11:28:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:3e9b68247ea50881d8f939e20693d486b50e8dfa8535bef7fa1f02e207abaeaa

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.