STEPS OF THE BLUE

Recording by 松井 秀太郎.

Recording identifiers

ISRC
JP92N2399330
CopyrightID (CopyrightChains transaction hash)
0x49f086ad83b35b66bef9a16e48a7cb1fbb32ef29987cfc1b4a63614b9eb7e54d
Copyright registration time
2026-06-09T18:14:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:25bb1a80c3a3ba9b26a7e4c074db0c5b4e15c6266238fe6cc72979755a5e199f

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.