March 2026 monthly summary focusing on key business-value outcomes and technical achievements across the Zisk and pil2-proofman repos. Key features delivered: - Coordinator Logs and Assembly Log Integration: Added coordinator and assembly logs with ASM logs; enhanced aggregation timing, debug messaging, and log coverage to improve observability and operational readiness for production deployments. - Input Stream SDK merge and write-proof support: Merged the Input Stream SDK, enabled write proofs, ensured stability for input stream handling, and added a working example for large programs (up to 1 GB). - MPI hints and stream integration: Introduced tentative MPI hints and related stream improvements to stabilize distributed processing and improve MPI workload orchestration. Major bugs fixed: - BN254 cryptographic curve bug fix: Resolved BN254-related issues in cryptographic operations to restore correctness. - MPI Sevilla bug fix: Fixed Sevilla-related failures and updated dependencies to ensure reliable MPI workflows. - MPI processes partitioning fix: Corrected set-partition logic to ensure balanced MPI process distribution. - EMU context fix: Addressed issues with EMU context handling to improve runtime stability. - General bug fix and final fixes: Applied broad fixes and cleanup to close out prior issues and stabilize the codebase. Overall impact and accomplishments: - Significantly improved observability, data integrity, and stability across critical synchronous and distributed paths; accounts for fewer production incidents, faster root-cause analysis, and a clearer path to performance benchmarking and optimization. - Prepared the codebase for upcoming performance work and larger-scale MPI deployments, with reliable logs, verifiable inputs, and cryptographic correctness. Technologies/skills demonstrated: - Rust ecosystem and tooling: Cargo updates, Clippy fixes, and dependency management; build stabilization and memory/assembly optimizations. - Concurrency safety: Migrated from RefCell to Mutex to fix potential runtime panics in shared-state scenarios. - Zisk and ZiskUP improvements: Expanded logging, input handling improvements, and documentation updates; readiness for larger-scale proofs and benchmarks. - pil2-proofman: Poseidon2 optimizations, BN128 GPU verification enhancements, CI/CD improvements, and new benchmarks/tests for bn128 and Poseidon2. Repositories: - 0xPolygonHermez/zisk - 0xPolygonHermez/pil2-proofman

February 2026 (2026-02) summary for 0xPolygonHermez/zisk focused on stabilizing the build, expanding SDK capabilities, and advancing GPU-accelerated proof workflows, enabling a smoother transition to the 0.16.0 release. Major work included modernizing the Rust build system and dependencies, updates to PlonkVerifier and Proofman, and introducing runtime and validation features; removal of pre-setup requirements to improve developer onboarding and CI throughput. The efforts delivered business value by reducing build friction, enabling faster iteration on proofs and guest programs, and strengthening toolchain reliability for production deployments.

January 2026 monthly summary for 0xPolygonHermez/zisk. Delivered high-impact features, fixed critical bugs, and advanced the platform toward production-readiness. Focused on cryptographic precompiles, verification reliability, memory and performance improvements, and developer experience. Key outcomes include feature delivery with clear deployment implications, stability enhancements, and evidence of strong cross-functional collaboration across Rust, C++, and assembly layers. Key features delivered: - Poseidon2 precompile and utilities: Poseidon2 precompile, Poseidon2 hash function, and related parameter updates (cost updates, compression flag). Commits: bfb237202ad4156509d10140f608b4393a78196e; 8eb489419330ed1cd7094e6b53db561deeb7974b; da7af6a6e1f05ad052633b589a8859f507827a8a; fbc6e853ddf058242123e8779513f9e323682eb3. - Compressed vadcop final wrapper: Introduce compressed vadcop final wrapper. Commit: 1543c332cdc28e4e00fa6072054a8d09373de30a. - Verify zisk proof: Add verification for zisk proof. Commit: 736b1eb3ea669aaca4dea70f101c713e230dbe6e. - Minimal compute capacity: Introduce minimal compute capacity setting. Commit: de81d90d4fa2facb4082aa2ed82953a6573c49cf. - 64-bit ROM counters: Move ROM counters to 64-bit (U64) to support larger values. Commit: c48b7464775adb14503afe3f7b1b8bbd7e1b7ffd. Major bugs fixed: - Collect_info cleanup: Remove unnecessary value in collect_info. Commit: 1094cbba110ef6948412bcf01afbdb17ef305a67. - Tests and maintenance: Code formatting, tests fixes, and dependency/doc maintenance (Cargo fmt; Update installation guide; Update Cargo; etc.). Commits: 77963b2c1c4a3b09257fdf4a07b2fde9fea65fc0; 5e3b6b22a66ea6c297c8ba475e2e4549712e9ae5; 07b54972d0b7c5e77f4a67db9a13c74af9bf680f; 1b40ec25c61b7a4c2d5766a2a7a60fe7708cf089; bdcddef943bd7b852be551c280d7f16af02d8dfe. - Fix tests: Fix tests. Commit: 630cbb446ceb1335283f2d2ff940f915ae22001b. - Fix packed: Fix packing logic. Commit: 9847ad2ef731b4ad7ef717ca785e93d661a202e8. - Memory inputs assembly fixes: Fix mem inputs assembly; timing and memory sizing adjustments. Commits: 9305ee7deca17bccce94ed20822b09b386339cdf; facd93de08dfa2f641bb18746c230a5d97bcf342. - Verify constraints with minimal memory: Verify constraints minimal memory only. Commit: 8c1177623e840c35a9abcceb38475ba36edb65ec. - Activation of execution stats: Activating execution stats again. Commit: 6ac7b12dadde45021ec3b2b217952395a2296ce4. Overall impact and accomplishments: - Improved verification reliability and security posture through explicit zisk proof verification and Poseidon2 integration. - Enhanced performance and memory efficiency via minimal compute capacity, 64-bit ROM counters, and memory-optimized process data paths. - Strengthened production-readiness with codebase hygiene (Rust tooling, clippy compatibility, cargo fmt, and documentation updates). - Reduced risk and maintenance burden by consolidating memory/input handling and stabilizing the build/tests workflow. Technologies and skills demonstrated: - Systems cryptography integration (Poseidon2 precompile), C++ voice functions, and assembly interplay. - Rust tooling and ecosystem: clippy compatibility, cargo fmt, and cargo updates. - Memory management and optimization across precompileds, with attention to timing and resource constraints. - Verification, constraint solving, and proof workflows for zero-knowledge proofs. - Cross-functional collaboration with contributors and maintainers across repo boundaries.

December 2025 highlights across 0xPolygonHermez/pil2-proofman and 0xPolygonHermez/zisk focused on performance, reliability, and deployment readiness to support larger proof workloads and faster turnarounds. Key features delivered include Poseidon2 enhancements (4-to-1 variant and 8-element configurations), verifier performance optimizations (timing improvements, parallelization, and merkle-tree verification), and configuration/build improvements (YAML to TOML migration, build-system optimizations, and dependency upgrades). Major bug fixes addressed outer verification aggregation, MT-related issues, and test stability, contributing to more robust proof generation and verification pipelines. Additional value comes from SNARK tooling enhancements (Plonk commands and improved zisk capabilities for higher memory requirements) and stabilization efforts such as the final compressor. Overall, these efforts improved throughput, reduced edge-case failures, and enhanced maintainability, positioning the team to scale proof workflows with stronger security and operational resilience.

Month: 2025-11 — Performance-focused monthly summary for the Pil2-Proofman and Zisk repositories. The work delivered this month strengthens distributed execution reliability, scales performance, and improves maintainability, directly translating to lower risk in production and faster iteration cycles for new features. Key features delivered: - Pil2-Proofman: Cargo dependency updates to newer versions to improve compatibility and security; enhanced recursive stream handling to better utilize processing workloads; removal of input data path logic to simplify data flow and reduce surface area; MPI error controls and distributed execution improvements; added recursive2 verifier for distributed processing; GPU compilation enabled for accelerated workloads; default ProverClientBuilder improvements for safer defaults; memory handling improvements and release buffer size checks; updated settings and code formatting enhancements to align with project standards. - Zisk: Dependency updates (Cargo and related) and Clippy-aware code quality improvements; performance tweaks including reducing table sizes; Clippy linting enabled; codebase cleanup (removing examples folder) and improved build stability; upgraded to latest Proofman; updated logging and error handling surface for better observability; added defaults improvements and settings updates. Major bugs fixed: - Stabilized packing behavior and fixed working state in distributed components; fixed airvalue handling and general fixes across the distributed code path; improved distributed aggregation correctness and resilience, with multiple commits addressing edge cases. - Robust error handling across distributed tasks and MPI error management; improved log handling and execution error handling; MacOS compatibility fixes; compilation error resolution; reset path fixes; removal of multilingual support to simplify maintenance; fixed multiple minor formatting and lint issues. Overall impact and accomplishments: - Increased system reliability and correctness in distributed computation, reducing risk of incorrect proofs or stalled workflows. - Improved runtime observability and debuggability, enabling faster issue diagnosis and root-cause analysis in production. - Better performance and determinism through dependency updates, memory safety enhancements, and data-structure improvements (IndexMap). - Strengthened code quality and CI stability via clippy/fmt, logging improvements, and targeted fixes across the codebase. Technologies/skills demonstrated: - Rust tooling (Cargo, Clippy, fmt), GPU compilation, Proofman integration, and MPI/distributed computing patterns. - Memory management, buffer safety, and error handling in complex distributed systems. - Observability, diagnostics, and performance optimization in a large codebase.

2025-10 highlights: substantial progress across packed trace infrastructure, SNARK integration, and multi-backend support, with improvements in testing, tooling, and contributor workflows. Delivered foundational features, fixed critical edge cases, and stabilized the platform for broader deployment.

September 2025 performance summary focusing on delivering scalable proof workflows, robust verification, and maintainable tooling across pil2-proofman and zisk. Highlights include GPU-accelerated proof generation and verification, enhanced distribution and reporting, Rust-based verifier progress, and targeted stability improvements that enable larger proofs and cross-platform deployments.

Month: 2025-08 Concise monthly summary focused on delivering business value and technical accomplishments across two repositories. This period emphasizes throughput, reliability, and scalable proof workflows driven by Rust concurrency, GPU acceleration, and distributed execution strategies. The team delivered core features, fixed critical bugs, and strengthened platform stability, enabling faster proof cycles and improved observability for stakeholders. Key outcomes: two repositories advanced critical capabilities in witness generation, proof orchestration, and GPU-enabled proof generation, with better resilience when GPUs are unavailable and improved CI stability.

July 2025 performance summary for 0xPolygonHermez/zisk and 0xPolygonHermez/pil2-proofman. The team delivered targeted features, resolved a broad set of bugs, and advanced observability, performance, and release readiness across both repositories. Key features delivered include dependency modernization and tooling improvements (Cargo.toml updates, cargo fmt, and clippy runs) that streamline builds and reduce risk, plus new functionality such as parallelized ArithEq filling, ROM MPI functionality, and minimal memory operation mode to optimize resource usage. Foundational logging was established with an initialization of the application logger and improvements to verbose logger output, improving diagnostics in production. Major platform and performance enhancements included GPU integration with stats propagation, recursive GPU-based processing paths, and SHA executor performance upgrades aligned to version 0.9.1/0.10.0, alongside compatibility updates to Rust 1.87. These changes span both projects with several quality improvements (code formatting, documentation updates, and release preparation) and stability fixes (server mode, emulator mode, memory alignment, and pinned memory pointers). The combination of code quality, performance optimizations, and release-readiness activities positions the team for smoother deployments, faster iteration cycles, and reduced post-release incidents. Technologies demonstrated include Rust tooling (Cargo, clippy, fmt), logging frameworks, GPU/CPU parity in stats, memory management, and cross-repo release practices. Overall impact: improved build reliability, performance, observability, and a clear path toward the 0.10.0 pre-development and Rust 1.87 compatibility targets.

June 2025 monthly delivery focused on stability, performance, and capability expansion: consolidated cargo configuration and formatting, added CLI diagnostics with execute scaffolding, memory and performance optimizations, enabling asymmetric pools and witness options, and batch processing/server enhancements (including GPU params server and prove workflow improvements).

2025-05 monthly summary for 0xPolygonHermez/zisk: Delivered a focused feature refactor to strengthen the Pil-witness path by aligning with the latest library interface, and updated trace constants to reflect new hash values and sizes. This work improves correctness of witness generation, reduces build drift, and lays groundwork for future library-driven enhancements. No external API changes; changes are internal and aimed at stability, traceability, and performance.

April 2025 focused on stability, memory efficiency, and performance improvements across pil2-proofman and zisk. Key outcomes include CI reliability upgrades, CPU path memory handling optimization, and correctness fixes in constraint verification, with broader effects on reliability, faster feedback cycles, and reduced production risk. Delivered changes enhance memory management, modernize the CI pipeline, and optimize trace configurations, supporting more predictable performance in production workloads and smoother release cycles.

March 2025 monthly summary for 0xPolygonHermez development work (zisk and pil2-proofman). Focused on reliability, security, and test coverage through new CLI checks, updated dependencies, CI enhancements, and hashing-based Proof ID generation for proofs.

December 2024 monthly summary for pil2-proofman: Key features, bugs fixed, impact, and technologies demonstrated. Focused on performance, safety, and API robustness to deliver business value in proof generation workflows.

November 2024 Monthly Summary: Focused on reliability, performance, and reproducibility across two repositories (pil2-proofman and zisk). Key features delivered and major fixes are aligned to business value and technical excellence.