Kaspa, a PoW cryptocurrency, leverages the GHOSTDAG protocol to innovate beyond traditional blockchains by allowing simultaneous blocks to coexist and achieve consensus, forming a blockDAG. This evolution of Nakamoto consensus ensures security with extremely high block rates (1 block/second, targeting 10/sec, and aspiring for 100/sec) and low confirmation times primarily dependent on internet speed. Kaspa’s features include Reachability for DAG topology queries, block data pruning (with plans for header pruning), SPV proofs, and upcoming subnetwork support to simplify layer 2 solution integration.