3. Polkadot’s decentralized governance approved the Join-Accumulate Machine (JAM) protocol as the network’s future architecture, according to the team: “JAM, a minimalist blockchain concept, will support secure rollup domain-specific chains and offer synchronous composability across services. To encourage development, Web3 Foundation launched the JAM Implementer’s Prize, a 10 million DOT fund (~$64.7M USD), for creating diverse JAM implementations. This initiative aims to enhance scalability and flexibility in blockchain applications, integrating elements from Polkadot and Ethereum for a versatile, secure environment.” The JAM “gray paper” by Polkadot founder Gavin Wood is here.