Monthly summary for 2025-07: matter-labs/era-contracts delivered a major protocol upgrade aligning with ZkSync v28 and Solidity 0.8.28 compatibility. The work encompassed compiler/contract updates, CI/workflow enhancements, and dependency refreshes to support the latest protocol features and security improvements.

May 2025 monthly summary: Focused work on enabling Protocol Version v28 capabilities and deployment readiness across zkSync-era repositories, with clear business value through performance gains, reduced cryptographic verification costs, and refined deployment configurations. Delivered feature enhancements and configuration updates that advance mainnet readiness while strengthening testing and dependency management.

April 2025: Across matter-labs/era-contracts and matter-labs/zksync-protocol, delivered CI/CD reliability improvements, ZK tooling ecosystem updates to support version 28, and crypto crate dependency refreshes. These changes stabilize builds, ensure reproducible environments, and enable safer upgrades for production deployments, delivering measurable business value in deployment speed, reliability, and security.

March 2025 — Proactive maintenance on matter-labs/era-contracts focusing on security, compatibility, and stability through hash-related dependency upgrades. The work delivered improved security posture, compatibility, and readiness for future performance enhancements, while preserving API and behavior.

February 2025 update for matter-labs/era-contracts: Delivered Protocol Upgrade Handling improvements and testnet upgrade script enhancements. The work adds new calldata for testnet deployments and refactors the upgrade logic to streamline the process and ensure compatibility with testnet environments. These changes reduce upgrade toil, increase reliability of testnet iterations, and lay groundwork for smoother mainnet upgrades.

January 2025: Delivered Era upgrade tooling enhancements for matter-labs/era-contracts, focusing on bootloader artifact generation and stage-proof calldata configuration to support reliable chain upgrades. Built tooling and integrated into the build to produce reproducible artifacts (.zbin) from preprocessed Yul and streamlined upgrade calldata generation.

In December 2024, stabilized the era-contracts CI workflow by unifying zksolc compiler version handling across L1/L2 contracts, addressing related cache issues in zkout, and simplifying dependency installation. The work focused on preventing cross-branch conflicts, improving build reproducibility, and reducing CI setup time, enabling faster feedback for PRs and deployments.

Month: 2024-11 – Matter-labs/era-contracts: CI/CD Pipeline modernization delivered cross-cutting improvements to deployment tooling and artifact integrity. The effort unified build and deployment workflows, added Foundry-zksync integration for contract building, and implemented artifact integrity checks across CI with a dedicated hash-verification step. Key improvements include artifact caching adjustments, updates to L1/L2 deployment scripts, and the introduction of new utility contracts/interfaces. The CI also gained artifact restoration steps post-build and enhanced discovery/filtering for YUL-related artifacts to ensure accurate hash calculations.