Zcash Developer Releases 'Common' Libraries With 14x Faster Mobile Proofs and 21x Faster Hashing
Key Takeaways
- •Common is an open-source library release that improves Zcash performance without any network upgrade or change to protocol or consensus rules.
- •Mobile proof generation is reported to be more than 14 times faster, and desktop proof generation more than five times faster.
- •The release also reports over 21 times faster Sinsemilla hashing, more than 1.5 times faster trial decryption, and four- to eightfold gains in zk-SNARK verification.
- •Wallet transaction creation waits could in many cases drop from over three seconds to under 200 milliseconds once the libraries are adopted.
- •Existing wallets and nodes gain no benefit automatically; adoption depends on providers integrating the code, and ZEC rose 5% to around $833 after the announcement.
Zcash developer Zakura has released Common, a set of cryptography and protocol libraries designed to accelerate network operations. According to the project, the new code speeds up proof generation, hashing, and verification, with the largest stated gain appearing in mobile proof generation.
Introducing Zakura Common. We just shipped 14x faster proving, 21x faster hashing, 1.5x faster trial decryption, and 4-8x faster verification. New releases of Zakura and wallets that use Zakura Common (such as @vizorwallet ) will benefit immediately. — Zakura (@ZakuraZcash) August 29, 2026
Faster Proofs, Hashing, and Verification
Common makes proof generation more than 14 times faster on mobile devices, according to Zakura, while desktop proof generation is more than five times faster. The changes target Zcash wallets and full nodes.
The gains are relevant to Zcash's shielded design: shielded transactions rely on zero-knowledge proofs, so the computational cost of generating and verifying proofs directly shapes how quickly wallets can send private transactions, particularly on phones where compute and battery resources are constrained.
The release also reported gains in several other technical areas. Sinsemilla hashing is more than 21 times faster, and trial decryption is over 1.5 times faster. Zakura reported fourfold and eightfold improvements in zk-SNARK verification. Trial decryption is the process by which a wallet checks whether incoming shielded notes belong to it, so faster trial decryption shortens the synchronization step in which wallets scan the chain for relevant transactions.
Helius CEO Mert called the work an "insane engineering feat," highlighting the reported 14-fold reduction in mobile proof-generation latency delivered in a single release.
According to Zakura, users may in some cases have to wait more than three seconds for a wallet to create transactions. Common seeks to ensure that, in many instances, this wait will fall under 200 milliseconds. These statistics refer to library efficiency rather than any change to consensus rules.
Benefits for Wallets and Full Nodes
Wallets implementing the Common libraries should also become faster, Zakura said. Full nodes using the libraries will benefit from faster transaction propagation and reduced orphan blocks. According to the project, these advantages apply to wallets and full nodes built with the code.
Sean Bowe, co-founder of the project, said the update brings significant performance benefits for shielded wallets and full nodes, and that applications using Common will enjoy the performance boost.
Common is open-source software. It can be integrated into Zakura releases and compatible wallets, an approach that enables performance optimization without any change to the network itself.
No Network Upgrade Required
Common does not involve an upgrade to the Zcash network and does not alter the protocol's rules. The update consists of upgraded libraries used by developers to build applications and full nodes. This distinguishes it from Zcash network upgrades, which historically have shipped as scheduled protocol changes requiring coordinated activation across the network.
The publication of the code does not automatically update existing wallets and nodes. Providers and operators need to integrate the code into their own releases, after which the claimed benefits become available through that updated software. Which wallets and node operators adopt Common, and how quickly they ship updated releases, will determine when users actually see the shorter transaction-creation times.
Zakura's announcement covered transaction creation, synchronization, and networking. There was no announced change to monetary policy, shielded transaction rules, or consensus rules.
The release coincided with increased market activity for ZEC, Zcash's native token. ZEC rose 5% and was trading around $833 following the announcement.
The update is focused on performance improvements, with benchmark results covering proof generation, hashing, decryption, and verification processes. Adoption by wallets and nodes will determine how widely the gains are realized.
