Old Memory (Yosuga no Sora)

Recording identifiers

ISRC

UKZGC2203023

CopyrightID (CopyrightChains transaction hash)

0x0f3d35a51feb0f1201341514917479d1d4375a7fae9b5a251352b39265d49f10

Copyright registration time

2026-07-06T07:30:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T13:52:39Z

Bitcoin block

957043

Canonical record hash

sha256:3b3c7a51d2e12ce944f0e350bce1e3b2bbe5678cb8af3a3fb2231606fb9ae693

• 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.