C.X. - Piano Version

Recording by Akihiko Matsumoto.

Recording identifiers

ISRC
JPPH09700990
CopyrightID (CopyrightChains transaction hash)
0xaa0d88dfd6a193179574f1ab251354489e5908815471a96a2f17679998d5ac10
Copyright registration time
2026-07-06T02:59:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-06T06:56:49Z
Bitcoin block
956889
Canonical record hash
sha256:c307c1d166f5caac11d9c1c4a294bda8e804edae5b3571d582ff4a87c9ed4fe3

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.