Premise: I'm still in the learning process of anything that is blockchain and Stellar
I've recently discovered ZkVM (here a nice article: https://medium.com/stellar-developers-blog/zkvm-a-new-design-for-fast-confidential-smart-contracts-d1122890d9ae) and I'm understanding that this is a protocol that can be used to become a sidechain of any blockchain. Quote from the technical white paper:
A ZkVM blockchain can work with any consensus protocol, from proof-of-work to Federated Byzantine Consensus.
The team behind ZkVM worked for or in collaboration with Interstellar, so it is heavily promoted for (and I guess built for) Stellar. And I'm understanding that the specific implementation for Stellar of ZkVM is Slingshot, again a project by Interstellar.
Since I've discovered ZkVM, I've been wondering whether there are other Stellar sidechain projects. Anyone knows?