Solidity developers have long dreaded the infamous “Stack too deep” error. To work around it, they often split functions, pack variables into structs, or manually offload values to memory — just to get the code to compile. It’s been a persistent pain point, with prominent Ethereum engineers openly questioning why it remains unresolved. One partial solution is the --via-ir flag, which allows the compiler to automatically move excess variables to memory instead of relying solely on DUP and SWAP for stack manipulation. It mostly works — but with a major caveat: it can subtly change the semantics of a contract. The result? Most projects remain on the legacy compiler path, doing “stack too deep” workarounds, leaving the underlying problem unsolved.

With the new release, solx fixes solc’s notorious stack-too-deep failure without altering contract semantics — your contract behaves exactly as if compiled with solc.

Meet ZKsync Airbender: the fastest open-source RISC-V zkVM, delivering sub-second proofs and near real-time Ethereum block proving on 1 GPU.

In the race to modernize financial infrastructure, enterprises face a difficult choice: either move fast and risk compliance, or stay compliant and fall behind.

With 2 man-years of engineering effort, solx has already reached a state where it produces better runtime gas efficiency than solc’s --via-ir --optimize pipeline — and it does so without tuning the LLVM optimizer or implementing any EVM-specific optimizations yet.

solx is a new optimizing compiler for Ethereum smart-contracts that could change the way you write and optimize Solidity code. Built on LLVM, solx focuses on improving runtime gas efficiency while reducing the need for manual workarounds.

On April 13th, a compromised admin account minted the remaining unclaimed tokens from the ZK token Merkle distributors used for the ZKsync June 17th 2024 airdrop. The hacker successfully took control of 111,881,122 ZK tokens (equivalent to ~$5M at the moment of the initial transaction). The transaction can be viewed here.

Our long-term goal has always been full EVM equivalence. The first step is an EVM Emulator that runs on top of EraVM and allows EVM bytecode execution. Native EVM Execution (Coming Soon).

ZKsync Community Program: a structured six-month initiative designed to empower contributors, reward meaningful participation, and provide clear pathways for community members to play an active role in expanding the ecosystem.