Function version 

pub async fn version(
    _cfm: SharedConfium,
    _params: Value,
) -> Result<Value, RpcError>

version() → {"version": "0.3.0", "major": 0, "minor": 3, "patch": 0}

The version string is the daemon’s own CARGO_PKG_VERSION, which is kept in sync with the workspace version via version.workspace = true.