Underground

Recording by Jan Hammer.

Recording identifiers

ISRC
USCGH0668291
CopyrightID (CopyrightChains transaction hash)
0x6440b4141d80f1f8bcd137d358d436db3c34d7608a71016716bc66e65748ed3d
Copyright registration time
2026-07-06T22:51:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:53:27Z
Bitcoin block
957124
Canonical record hash
sha256:e0adc4ef7d8f9b4e7b9e82995988b20b93a2f27f3152a7e8161e5be288fe7112

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.