Jo, Jo A Je To Tak

Recording by Darek Vostřel.

Recording identifiers

ISRC
CZA166600009
CopyrightID (CopyrightChains transaction hash)
0x86ad988e7443976703e994bc15e0cdf70eb474e3762fea791ff1afc4cbb8e882
Copyright registration time
2026-07-06T10:08:36+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T14:50:41Z
Bitcoin block
957052
Canonical record hash
sha256:77598d126caf2c020d39c35abba1b1f884b9e56c4010f264d16b642e6af50f4f

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.