RaptorCast: Designing a Messaging Layer‍In Proof of Stake blockchains, a pre-determined leader typically proposes a block of transactions at each round. The propagation of this block to all validators is one of the most challenging and time-consuming steps in the consensus protocol. In this blog post, we examine RaptorCast, a solution designed to address the following considerations:Performance - a block proposal needs to be sent quickly to the rest of the networkSecurity - each recipient of the...