What is the Toccata Hardfork in Kaspa?

The Toccata Hardfork is a major network upgrade to Kaspa, introduced in version 2.0.0 and defined across four Kaspa Improvement Proposals: KIP16, KIP17, KIP20, and KIP21. A hardfork is a change to a blockchain's rules that is not backward-compatible — nodes that don't upgrade will no longer agree with the rest of the network. The Toccata upgrade specifically brings native Layer 1 covenant programming and infrastructure for based zero-knowledge (ZK) applications to Kaspa. For a beginner, this means Kaspa's base layer is gaining new programmability and privacy-friendly building blocks that open the door to a broader range of applications built directly on Kaspa.