Když Je Klukům Patnáct Let

Recording by Petr Rezek.

Recording identifiers

ISRC
CZA167800022
CopyrightID (CopyrightChains transaction hash)
0x04a7097ba26e8b59638b5a0b5411dc2de517486342e53bce4a171ead0cba3f55
Copyright registration time
2026-07-29T21:00:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T23:23:05Z
Bitcoin block
960164
Canonical record hash
sha256:9db60dcc18a4ac3118b59656b8662ccf124f2d9a44cc7c3a0eb75fb02d62f36c

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.