According to Sutton, the upgrade introduces two major technological directions for Kaspa. The first is native Layer-1 covenant programming, which will allow developers to build more complex transaction logic directly on the base layer while still operating within the network’s UTXO model.
To make these capabilities easier to use, developers are also working on a new compiler called Silverscript, aimed at simplifying the creation of advanced covenant-based applications on Kaspa’s main chain.
The second pillar focuses on zero-knowledge (zk) infrastructure, enabling applications that rely on cryptographic proofs. These tools could allow developers to build zk-based applications and bridging systems on top of Kaspa while relying on the security of the base layer.
Several technical components of the upgrade are already implemented, including expanded script opcodes for covenants, zero-knowledge verification opcodes, and new mechanisms for managing covenant lineage and sequencing commitments.
The development process is now entering its final phase. Sutton said the team is targeting a feature freeze around April 15, 2026, after which the focus will shift to testing, code integration, and preparing the network for activation.
While the hard fork was initially planned for early May, the expected mainnet window has moved to approximately June 5–20, 2026 to ensure key architectural components are finalized correctly before deployment.
Once live, the Toccata upgrade is expected to mark a milestone for Kaspa, bringing together its high-throughput base layer with new programmability tools designed to support advanced decentralized applications and zero-knowledge systems.
