時季は巡る

Recording by Yu Sakai.

Recording identifiers

ISRC
JPBV01321305
CopyrightID (CopyrightChains transaction hash)
0x7ec8b4bd08cfffccff43a4980681bc94359e1247d6fbc21381903518ed9ad9ee
Copyright registration time
2026-07-29T18:50:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T19:35:34Z
Bitcoin block
960138
Canonical record hash
sha256:08239423e855f167bfdf340c2272950d9623f3bc1d5e5cc2ff0c513a62372beb

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.