永遠なるもの

Recording by Kazuyoshi Nakamura.

Recording identifiers

ISRC
JPPH09700899
CopyrightID (CopyrightChains transaction hash)
0x8e2cccf65e5fe27d55664de937d788b107c8c716079dd1b320d10222b61d0e00
Copyright registration time
2026-06-08T17:22:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T15:41:10Z
Bitcoin block
953528
Canonical record hash
sha256:bb5f2701d5cf22d95c56b75bcd465f30d297947c90f82b1e287da3ec355b9963

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.