BLUE SAPPHIRE

Recording by Hiroomi Tosaka.

Recording identifiers

ISRC
JPB601901254
CopyrightID (CopyrightChains transaction hash)
0x4e50850024bc96ffee835c199e9f679f4ed6334f91fc2f353e94a19670447c5f
Copyright registration time
2026-06-04T16:24:23+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:50:38Z
Bitcoin block
957075
Canonical record hash
sha256:870b7e3529319d5241bf681620d2f62f7d11ae8b90c27bd3913cf5e2ffd7a092

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.