Kdo Je Simplicio?

Recording by Janek Ledecky.

Recording identifiers

ISRC
CZA210400142
CopyrightID (CopyrightChains transaction hash)
0xcf3e84dfc6837a667a4531afffb493279cf9a2b80ce4d4c163efe66540db7161
Copyright registration time
2026-07-07T23:32:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:39:04Z
Bitcoin block
957122
Canonical record hash
sha256:8a34cc5a0c1fd1f751866a4024d38c297682d849d83f47d4fbaa5efdbfe4a9e3

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.