Schnorrkel is written in NETStandard2.0 to provide maximum compatibility for Unity3D.
We thank Gautam Dhameja for sharing the source code for C-Rust bindings for SR25519 Rust library, which enabled our end-to-end testing and validation of our sr25519 implementations.
We thank use-tech for providing schnorrkel C# implementation. https://github.com/usetech-llc/polkadot_api_dotnet