Penumbra

Recording by John Tejada.

Recording identifiers

ISRC
DEU671500022
CopyrightID (CopyrightChains transaction hash)
0xf4c05cd371790b79b74114e41a32d485c7ec6f0d057a843fda777b7a296da022
Copyright registration time
2026-06-19T14:06:00+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:3417f01a250c1c685a9eb0f941861263d91483f3a1d9aeee4b41dd1ee5264dd0

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.