天気晴朗 航海日和

Recording by 山下康介.

Recording identifiers

ISRC
JPCO01133520
CopyrightID (CopyrightChains transaction hash)
0x3b93b038138c7ec6a6d9a8c921b62e17baf911d72d3ca789a76061f9f7781de4
Copyright registration time
2026-08-01T01:06:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-08-01T01:44:32Z
Bitcoin block
960494
Canonical record hash
sha256:e8f7aff1fc9519ce66d82b279c38001335aa7419605beed75504222dacb5f5f6

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.