さよなら

Recording by Off Course.

Recording identifiers

ISRC
JPTO00500128
CopyrightID (CopyrightChains transaction hash)
0x14ba1e5ac684b0427b6c57e1ea7e903c06cad687e811512f4d4eaff20ba00cf5
Copyright registration time
2026-06-05T19:00:21+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:ecbeba1902629335db51e5d3f3ed6b52d44ec637fded657c509c5862d8322594

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.