Léto Jak Má Být

Recording by Karel Zich.

Recording identifiers

ISRC
CZA168600279
CopyrightID (CopyrightChains transaction hash)
0xaf6f07ec55d87458039e9b9b6c87fe949621d81b9a7d1d705a193b9d533cdd4c
Copyright registration time
2026-06-08T04:52:42+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:0cbd9e18c9d7838f797618a108c62f711764fc4dd2c56774c967905d6412fd71

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.