Penumbra

Recording by Tiago Mac.

Recording identifiers

ISRC
BC6NC2200001
CopyrightID (CopyrightChains transaction hash)
0x4d433ee700a40d0410f9c8095c86120a416de3914799eaae662464a07e1dc233
Copyright registration time
2026-06-27T00:46:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T05:09:12Z
Bitcoin block
956312
Canonical record hash
sha256:68f1237184cc52dc16ebf02ba52eb09a6d2eebab8b36ddb71a142ae336248167

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.