Obyčejný Kluk

Recording by Petr Rezek.

Recording identifiers

ISRC
CZA650401938
CopyrightID (CopyrightChains transaction hash)
0x8e546366bdf9bfaf2ecc01e0c890223f17f64be619741f3c5474b41655c7d218
Copyright registration time
2026-07-31T06:37:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T06:58:00Z
Bitcoin block
960362
Canonical record hash
sha256:48d35b5f71efa544bc93a867b57632f2df547b005c4fbe242ed6f9dc7bfdd293

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.