Smart contracts operate completely transparently. There is no private data other than the private keys used to sign transactions. Unless you just encrypt the da

Smart contracts operate completely transparently. There is no private data other than the private keys used to sign transactions. Unless you just encrypt the data, then you need a key to access it, and the nodes don’t have that key. I know a guy that worked on this same problem leveraging TEEs (trusted execution environments). This enables 3rd parties to run the software and join the network and take part without having access to the data. Unless they find a flaw in the TEE that can be exploited.