How does Kaspa's DAG differ from a single-chain blockchain?

In Kaspa, a block can point to many other blocks at once, whereas in a traditional single-chain cryptocurrency each block points to only one predecessor. A traditional blockchain is a single, linear chain — every new block has exactly one parent. Kaspa uses a DAG (directed acyclic graph), a structure where each block can reference multiple previous blocks simultaneously. This allows blocks created at roughly the same time to coexist rather than competing, and the network orders them through the GHOSTDAG protocol to reach consensus. This matters to a beginner because it is the architectural reason Kaspa can process more blocks without discarding parallel work the way a single chain would.