The episode centers around the world of sidechains for UTXO-based blockchains such as Horizen or Zcash. The Horizen team has developed Latus and Zendoo, a SNARK-powered mechanism for designing trustless sidechains. Alberto explains how Horizen’s Zendoo system works under the hood to connect a mainchain with a set of sidechains built for specific purposes, while Latus’s design diminishes reliance on bridge validators.