Underground UP

Recording identifiers

ISRC

FRZ081100540

CopyrightID (CopyrightChains transaction hash)

0x3a1bdd92d21744063706e3665b928b54bdf0b2c875592f316012fba410511f17

Copyright registration time

2026-07-29T13:17:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T13:21:01Z

Bitcoin block

960111

Canonical record hash

sha256:05fa4a31df2010d3269fbaa26db6f1c1de80cd9cb4720297f83b42509ebac9a9

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.