Jen Se Hádej

Recording by Waldemar Matuška.

Recording identifiers

ISRC
CZA168200044
CopyrightID (CopyrightChains transaction hash)
0x52112b5ff890e1093b7a8e02aaf6f23d86741cfde375ce20c479933ccb4ac038
Copyright registration time
2026-07-30T15:09:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T15:42:38Z
Bitcoin block
960273
Canonical record hash
sha256:8a19c5a1ce72de95d7e7ef9d98c9c7cc0f1d00e35373315635f09cb1d2f72435

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.