C.X.

Recording by Akihiko Matsumoto.

Recording identifiers

ISRC
JPPH09700390
CopyrightID (CopyrightChains transaction hash)
0x874b9460ae5178023e600312490496696c1c89cf3ef475da5b488517b59d027c
Copyright registration time
2026-06-10T19:42:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-06T01:25:57Z
Bitcoin block
956856
Canonical record hash
sha256:33e0c1e9fb6ac58a69dcd46bfb4d67bb2593b0a85b2f2f3f9435956a7e1be1ed

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.