
Karolis Petrauskas contributed to the iotaledger/wasp repository by engineering core blockchain backend features and reliability improvements over seven months. He developed and refactored consensus algorithms, enhanced transaction processing, and integrated gas management, focusing on cost-aware execution and accurate accounting. Using Go and TypeScript, Karolis implemented disaster recovery tooling, chain rotation APIs, and formal verification with TLA+ to strengthen system correctness. His work included debugging utilities, deterministic testing, and code cleanup to improve maintainability and observability. By addressing concurrency, serialization, and versioning challenges, Karolis delivered robust solutions that increased system stability and streamlined both development and operational workflows.

May 2025 for iotaledger/wasp: Key bug fix addressing gas coin version selection. Implemented fix so the gas coin aggregation logic always selects the newest version when multiple versions exist, preventing older versions from being used. This improves gas accounting accuracy and version governance. No new features delivered this month.
May 2025 for iotaledger/wasp: Key bug fix addressing gas coin version selection. Implemented fix so the gas coin aggregation logic always selects the newest version when multiple versions exist, preventing older versions from being used. This improves gas accounting accuracy and version governance. No new features delivered this month.
Monthly summary for 2025-04 focusing on iotaledger/wasp work. Delivered a feature refactor for transaction data handling with logging enhancements to aid debugging, and improved traceability by decoupling data serialization from signing preparation. This work enhances debugging, auditing, and reliability in transaction processing.
Monthly summary for 2025-04 focusing on iotaledger/wasp work. Delivered a feature refactor for transaction data handling with logging enhancements to aid debugging, and improved traceability by decoupling data serialization from signing preparation. This work enhances debugging, auditing, and reliability in transaction processing.
March 2025 performance summary for iotaledger/wasp focused on stabilizing consensus, improving test reliability, and sharpening code health. Key changes spanned bug fixes, internal cleanups, and tooling improvements to support manual testing and onboarding.
March 2025 performance summary for iotaledger/wasp focused on stabilizing consensus, improving test reliability, and sharpening code health. Key changes spanned bug fixes, internal cleanups, and tooling improvements to support manual testing and onboarding.
February 2025 was focused on stability, recoverability, and maintainability for wasp. Delivered disaster recovery tooling for the wasp-cli to sign and post unsigned transaction data to the L1 network with a streamlined signing-posting workflow. Added chain rotation API and CLI with consensus integration to propose and execute address rotations. Hardened the consensus engine with observability improvements, reduced log noise, and robust handling of empty/invalid proposals. Improved code quality and maintainability through refactors and asset cleanup, including removal of obsolete specs/assets.
February 2025 was focused on stability, recoverability, and maintainability for wasp. Delivered disaster recovery tooling for the wasp-cli to sign and post unsigned transaction data to the L1 network with a streamlined signing-posting workflow. Added chain rotation API and CLI with consensus integration to propose and execute address rotations. Hardened the consensus engine with observability improvements, reduced log noise, and robust handling of empty/invalid proposals. Improved code quality and maintainability through refactors and asset cleanup, including removal of obsolete specs/assets.
January 2025 focused on stabilizing core chain operations, expanding test coverage, and hardening reliability across consensus, mempool, and chain management. Delivered actionable features and fixes that reduce risk in production and improve debugging efficiency. Key features delivered include Chain Manager integration with CmtLog with stabilized tests and integration of CmtLog changes; DSS signer tests implemented with fixes to SignTransactionBlock; and continued development and hardening of chain node tests. Major bug fixes included consensus nil handling and lifecycle robustness (nil AO and proposals handling, cleanup of consensus instances, and more event-based updates in ChainMgr), mempool timing fixes with OS time usage, chain core signature fixes, and handling of duplicate xpub scenarios. Additional improvements included test debugging utilities and instrumentation to accelerate troubleshooting. Overall, these efforts increased system reliability, reduced regression risk, and provided a stronger foundation for upcoming performance and feature work. Technologies/skills demonstrated include Go-based backend development, test engineering and instrumentation, CmtLog integration, DSS signer testing, event-based design in ChainMgr, and time-management stability using OS time.
January 2025 focused on stabilizing core chain operations, expanding test coverage, and hardening reliability across consensus, mempool, and chain management. Delivered actionable features and fixes that reduce risk in production and improve debugging efficiency. Key features delivered include Chain Manager integration with CmtLog with stabilized tests and integration of CmtLog changes; DSS signer tests implemented with fixes to SignTransactionBlock; and continued development and hardening of chain node tests. Major bug fixes included consensus nil handling and lifecycle robustness (nil AO and proposals handling, cleanup of consensus instances, and more event-based updates in ChainMgr), mempool timing fixes with OS time usage, chain core signature fixes, and handling of duplicate xpub scenarios. Additional improvements included test debugging utilities and instrumentation to accelerate troubleshooting. Overall, these efforts increased system reliability, reduced regression risk, and provided a stronger foundation for upcoming performance and feature work. Technologies/skills demonstrated include Go-based backend development, test engineering and instrumentation, CmtLog integration, DSS signer testing, event-based design in ChainMgr, and time-management stability using OS time.
December 2024 for iotaledger/wasp: Delivered foundational reliability improvements to consensus robustness and commit logging, underpinned by formal verification work. Implemented refactors of the chain manager's consensus handling, renamed commit log input types, and expanded formal specifications with TLA+ modules for consensus instances and self-stabilization verification. This work enhances chain state correctness, fault tolerance, and provides a solid baseline for future reliability upgrades.
December 2024 for iotaledger/wasp: Delivered foundational reliability improvements to consensus robustness and commit logging, underpinned by formal verification work. Implemented refactors of the chain manager's consensus handling, renamed commit log input types, and expanded formal specifications with TLA+ modules for consensus instances and self-stabilization verification. This work enhances chain state correctness, fault tolerance, and provides a solid baseline for future reliability upgrades.
November 2024 monthly summary for iotaledger/wasp: Delivered gas management enhancements and strengthened testing to improve reliability and business value. Key features introduced include integrating gas information into the consensus flow and NodeConn with propagation through the state anchor and initialization, enabling programmable transactions with a dedicated data builder and gas budget estimation hooks, and extending batch proposals to support gas aggregation. In parallel, GPA and consensus test infrastructure was improved with additional mocks and serialization reliability fixes, resulting in more stable test runs and faster validation of gas-related scenarios. These efforts collectively enable cost-aware transaction execution, more accurate gas accounting, and a more robust deployment pipeline.
November 2024 monthly summary for iotaledger/wasp: Delivered gas management enhancements and strengthened testing to improve reliability and business value. Key features introduced include integrating gas information into the consensus flow and NodeConn with propagation through the state anchor and initialization, enabling programmable transactions with a dedicated data builder and gas budget estimation hooks, and extending batch proposals to support gas aggregation. In parallel, GPA and consensus test infrastructure was improved with additional mocks and serialization reliability fixes, resulting in more stable test runs and faster validation of gas-related scenarios. These efforts collectively enable cost-aware transaction execution, more accurate gas accounting, and a more robust deployment pipeline.
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