パズル

Recording by Yu Sakai.

Recording identifiers

ISRC
JPBV01220512
CopyrightID (CopyrightChains transaction hash)
0x411a3469b971a02ff367c97b411c2029aeff0b252765a2fe5052b3fd6df37e86
Copyright registration time
2026-07-31T21:09:06+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T21:25:57Z
Bitcoin block
960468
Canonical record hash
sha256:c9331048458a4d53fb924174a0869dc3786d5cbc3530633f02b7e97ab82aafd1

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.