For cross-chain bridging and messaging, almost every existing approach falls into one of two broad categories. The first is having a consensus forming middle chain validate and forward messages between chains. The second is running a light node on-chain. Let’s discuss.Middle ChainMiddle chains receive, validate, and forward messages between chains. In this model, the middle chain is granted full signing power to all messages, making it a single point of failure. In the event of consensus corr...