A custom one that has ZKPs as a primitive in the VM and a VM that is fully fledged? Not really no, would have to do some more research on that. Most build upon an existing solution. Something like MINA does have its own VM, but it's a simple VM, comparable to what Bitcoin has with their scripts.
A custom one that has ZKPs as a primitive in the VM and a VM that is fully fledged? Not really no, would have to do some more research on that. Most build upon an existing solution. Something like MINA does have its own VM, but it's a simple VM, comparable to what Bitcoin has with their scripts.