旭川ノスタルジア第二章 (Asahikawa25 Version)

Recording identifiers

ISRC

JPW462515048

CopyrightID (CopyrightChains transaction hash)

0x4d4961276c30a178c5278ba8eaf154f94653f0c32d2d1bfe96d2d311ef98f4b1

Copyright registration time

2026-07-29T17:23:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T19:35:34Z

Bitcoin block

960138

Canonical record hash

sha256:9367117b07554f3ea3780e73421b9cc35628b22e86d577a439f4db94aee3b0c2

• 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.