Recursive Validity Proofs

While Ethereum-based layer-2 solutions have been focused on hyperscaling the network, Ethereum co-founder Vitalik Buterin believes layer 3s will serve a far different purpose — providing “customized functionality.”  Buterin shared his thoughts in a Saturday post, providing three “visions” of what layer 3s will be used for in the future. The Ethereum co-founder said a third layer on the blockchain makes sense only if it provides a different function to layer 2s, which have been used mainly to enhance scaling via zero-knowledge (zk) Rollup technology: “A three-layer scaling architecture that consists of stacking the same scaling scheme on top of itself generally does not work well. Rollups on top of rollups, where the two layers of rollups use the same technology, certainly do not....