Zcash Releases Udon Code as Tachyon Scaling Targets 50,000 Private TPS

Zcash developers have released Udon, a new Rust component designed to begin integrating Project Tachyon into Zakura Common, the cryptographic library used to create and verify private transactions across the Zcash ecosystem. The release represents an infrastructure milestone for Tachyon, a proposed scaling initiative focused on reducing the amount of data and computational work that network participants need to process when handling large numbers of private payments.

Udon, identified as zakura-udon, is being developed to provide the underlying support required for Tachyon’s recursive proof technology. Rather than processing every payment proof independently, Tachyon is designed to combine proofs from multiple transactions so that nodes can verify a smaller amount of information. The approach is intended to improve the scalability of Zcash’s privacy infrastructure while retaining the cryptographic properties required for shielded transactions.

Udon Begins Integration of Tachyon Into Zcash Infrastructure

The new component builds on cryptographic work already incorporated into Zakura Common. Previous improvements to Common have reportedly reduced private-transaction creation times from more than three seconds to below 200 milliseconds in testing. Those performance gains provide a foundation that Tachyon can use as developers work toward more advanced recursive proving and verification capabilities.

The distinction between Udon’s release and a network upgrade is important. Udon is a software component entering the development stack, rather than a change that has already been activated across the Zcash mainnet. Project Tachyon remains a proposed Zcash upgrade, meaning additional engineering, testing and security review are required before any production network implementation could take place.

Tachyon’s core scaling concept centers on recursive proofs. Private transactions require cryptographic proofs that allow the network to verify that transactions are valid without revealing protected transaction information. As transaction volume increases, generating and verifying those proofs can create additional computational and data requirements. Combining proofs could allow multiple payments to be represented more efficiently, potentially reducing the workload imposed on nodes.

The Udon release therefore gives developers a specific piece of infrastructure on which later Tachyon components can be built. Its use of cryptographic code already optimized within Common is intended to avoid duplicating foundational work while allowing the scaling project to develop its recursive proof system separately.

Tachyon Targets 50,000 Private Payments Per Second

The long-term objective attached to the Tachyon work is ambitious: approximately 50,000 private payments per second. That figure represents a development target rather than current Zcash network performance, and reaching it will depend on the performance of the complete Tachyon architecture, not simply the release of Udon.

For Zcash, the significance of the project extends beyond raw transaction throughput. The network’s defining feature is shielded transactions, which use zero-knowledge cryptography to protect transaction details while allowing validity to be established. Scaling that functionality without requiring substantially greater resources from network participants remains an important technical challenge.

Recursive proving could address part of that challenge by allowing information from multiple transactions to be compressed into proofs that are more efficient for nodes to process. However, the technology also introduces additional implementation and security considerations.

A proposed privacy-preserving scaling system must undergo extensive testing before developers and the wider Zcash community can determine whether it is suitable for mainnet deployment.

The release of Udon consequently marks the beginning of a new development phase rather than the completion of Tachyon. Developers still need to build and test the subsequent components, evaluate performance under realistic conditions and complete security reviews. Any eventual activation would also require the appropriate Zcash development and community approval process.

If Tachyon eventually reaches its stated target, it could significantly expand the potential throughput of Zcash’s private-payment infrastructure. For now, however, the key development is that Udon has moved Tachyon’s recursive-proof technology from a proposed concept toward integration with the Zakura Common software stack, giving developers a foundation for the next stage of scaling research.