How does KIP-0016 enable Layer 2 solutions on Kaspa?

KIP-0016 enables Layer 2 solutions on Kaspa by introducing verifiable computation to the network for the first time. Verifiable computation means that a program's output can be proven correct without every node re-running the entire program — a key requirement for Layer 2 systems, which process transactions off the main chain and then submit a compact proof back to it. The OpZkPrecompile opcode provides the concrete scripting foundation that makes this possible on Kaspa. For a beginner, this is significant because Layer 2 solutions are how blockchains scale to handle far more activity than the base layer alone can support.