Untergrund
Recording by Masashi Hamauzu.
Recording identifiers
- ISRC
- JPA840800737
- CopyrightID (CopyrightChains transaction hash)
- 0x229dba2a5c9828f8306f4b042fde557f31d51e1485418754de4b1429bc0512b8
OpenTimestamps proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T19:35:34Z
- Bitcoin block
- 960138
- Canonical record hash
- sha256:7e0cc982816661a6b3c7bfe5dbf4eb8d94b49af3433f613a3441ab7214b47f62
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.