サクソフォーン四重奏曲 4.広場の音楽会

Recording identifiers

ISRC

JPZ921410531

CopyrightID (CopyrightChains transaction hash)

0x71957e359c468dae2383adf13c7df398aa454a8f7d61c368604118c45693155c

Copyright registration time

2026-07-07T16:01:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:86e15382e39a1132177ba890175e68605c6d3d54fcbc04da412b6ef3e2b47006

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.