Už Je To Dávno

Recording by Vítězslav Vávra.

Recording identifiers

ISRC
CZA160402251
CopyrightID (CopyrightChains transaction hash)
0x67d169a2f56611d45194e75c6f7551bb8c17b11e40ef4af0ad8b6418c0e29055
Copyright registration time
2026-07-07T17:12:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:4a9023e1e9da4cb87f7bf0a6aff936cbbd88f17b977b2bb910f41bed76d203f2

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.