Something Lost

Recording by 藤間 仁.

Recording identifiers

ISRC
JPA842101367
CopyrightID (CopyrightChains transaction hash)
0xf10a1197eca44b05a7e3cc1189841ca9a75a5275251efd2d65a77004244619c9
Copyright registration time
2026-07-31T12:56:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T13:06:57Z
Bitcoin block
960404
Canonical record hash
sha256:f7997175c9ab33727569920b9694f7ae56dc9d5af6801ab9fabba5361c607859

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.