Spolu

Recording by Petr Muk.

Recording identifiers

ISRC
CZA231000388
Release date of the album this recording appears on
2010-05-21
CopyrightID (CopyrightChains transaction hash)
0x7d1b8e9269ffeb5f502f67d80ae8cbc85127b7b983a4227264687f07fd0e11eb
Copyright registration time
2026-07-06T22:28:07+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:4bf20bfe83be94491be66bd012509c1bec51866a3610b43ba4430d203c2ca067

What this proof establishes

This recording was released in 2010, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.