Sorrow

Recording by Taku Iwasaki.

Recording identifiers

ISRC
JPB601400213
CopyrightID (CopyrightChains transaction hash)
0x47a0f481ee5e19e5c88002078bd819dc71645c408171eb676db5158dd051c6ee
Copyright registration time
2026-06-20T23:37:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:682fb75069aa1f9fc80c1ada49007d181785d88eade4d4379b4e25e563240f3b

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.