Z-PO Project (OP-Z internals & file format)
Community reverse-engineering notes on the OP-Z, including the .opz project format

Good to know
- Heads up: Last updated in 2019; formats may have changed in later OP-Z firmware.
About
A community research project documenting the OP-Z's internals, most notably the .opz project file format, decoded almost byte for byte. The notes live in the GitHub repo's wiki with a companion blog. It's the reference to start from if you want to read or generate OP-Z projects in your own tools.