our days｡ ～僕らの日々～

Recording identifiers

ISRC

JPH371200164

CopyrightID (CopyrightChains transaction hash)

0x62662f340d7b8352a33531fbfa9e9e18df58e9af1a91f58853c26d56f0db8ab9

Copyright registration time

2026-07-30T04:49:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T05:15:54Z

Bitcoin block

960209

Canonical record hash

sha256:049452f0bb251c6f85ff71875bd5a0f3dc9b2657e3b9af53667c5ecab216af77

• 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.