January 2026 (kaiachain/kaia): Focused on Osaka fork readiness and preserving contract compatibility. Implemented Blob Gas API enhancements to expose excess blob gas and blob gas used in Ethereum header and block output to support blob transactions and cost management. Restored backward-compatible ModExp gas calculation with overflow handling to maintain compatibility with existing contracts, including the GetRequiredGasAndComputationCost formula and overflow capping. These changes improve Osaka fork readiness, maintain contract reliability, and strengthen VM gas accounting.

December 2025 focused on enabling robust blob-sidecar support and clarifying gas costs for developers. Key features include BlobStorage for persisting blob transaction sidecars, expanded API fields and endpoints to fetch sidecars, and BlobBaseFee plus FeeHistory for accurate cost transparency. API stability improvements and tests increased reliability, with GetBlobSidecar retrieval paths and endpoints (eth_getBlobSidecars, eth_getBlobSidecarByTxHash) now operational. Bug fixes tightened RpcMarshalBlobSidecar encoding and removed a node.Config dependency to simplify deployment. Testing and maintenance were strengthened with EEST upgraded to v5.4.0 and expanded coverage. Kaia-docs gained a new Prague/Osaka EVM cost model and added precompiled contracts, improving developer cost estimates. These efforts reduce integration risk, speed up blob-sidecar workflows, and provide clearer cost signals for on-chain activity.

November 2025 monthly summary for kaiachain/kaia focused on delivering foundational EIP-4844 blob transaction capabilities, enhancing data availability workflows, and driving stability and performance improvements across the core chain. The month combined architectural enhancements with targeted maintenance to support upcoming scaling initiatives while preserving reliability and developer velocity.

Concise monthly summary for 2025-10 focusing on work on kaiachain/kaia. Key features delivered include upgrading the Go toolchain to 1.25.3, implementing a 10 MiB RLP-encoded block size cap per EIP-7934 with validations and tests, and upgrading linting/CI configurations to align with golangci-lint v2.5.0. Major bug fixes address robustness in error handling for non-constant format strings. The month also included lint/CI improvements to ensure maintainability and faster feedback cycles.

September 2025 monthly summary for kaiachain/kaia. Focused on enhancing node synchronization visibility and API clarity by delivering EthDownloaderAPI integration and refinements to the Eth namespace sync status. The work improves monitoring accuracy, operator confidence, and consistency of sync reporting across the Eth namespace.

August 2025 monthly summary for kaiachain/kaia focused on stabilizing RPC block-number semantics and improving developer experience. Delivered a feature that standardizes block interpretation by recognizing 'safe' and 'finalized' as aliases for 'latest' in the RPC layer, with accompanying tests to validate the behavior. This work reduces edge-case bugs for clients and lays groundwork for broader client tooling compatibility.

July 2025 monthly summary for kaiachain/kaia. Focus: gas estimation alignment with Ethereum semantics to ensure reliable on-chain calls. No new user-facing features; one critical bug fix implemented to align kaia_estimateGas with eth_estimateGas, including correct handling of gas=0 for DoCall. This change reduces failed transactions and developer friction by ensuring default estimation behavior mirrors Ethereum's. Impact: improved reliability in gas estimation, consistency across RPC interfaces, and safer default behavior for DoCall and contract interactions. Technologies/skills: API design and RPC surface alignment, bug fix discipline, back-end gas estimation logic, and code hygiene; commit 6a62312b51321dc8882fe73910afc717b62e7100.

June 2025 focused on stabilizing high-load transaction processing, strengthening test coverage for Ethereum-related changes, and hardening data integrity. Delivered tangible improvements to the transaction pool, aligned Ethereum Execution Spec tests with the latest changes, and reinforced JSON marshaling rules for critical authorization data, enabling more reliable production operation and faster iteration cycles.

May 2025 monthly summary for kaiachain/kaia. Focused on stabilizing the core state machine and maintaining contract behavior through targeted fixes and dependency management. Delivered robust state transition bug fixes, improved readability, and ensured stable dependencies by upgrading grocksdb-v1.10 while reverting an unintended bump in contracts to preserve expected behavior.

April 2025: Key outcomes include modernization of development tooling, critical genesis sync fixes, strengthened blockchain startup/validation, and fork readiness for Prague and Shanghai upgrades. These changes improve build reliability, reduce startup failures, ensure correct synchronization, and strengthen the protocol upgrade process, delivering concrete business value and technical resilience.

March 2025 monthly summary for kaiachain/kaia: Key features delivered include Transaction Pool Validation and Authority Management Enhancements with EIP-7702 SetCodeTx handling, new error types, enforcement of single in-flight transactions per delegated account, and improved authority conflict checks and txLookup tracking; documentation improvements for Tx Pool; and Go version upgrade to 1.23.7 with dependency maintenance. Focused on reliability, security, auditability, and maintainability.

February 2025 — kaiachain/kaia: Delivered substantial backend improvements, API stabilization, and tooling upgrades that increase reliability, developer productivity, and value delivery for customers leveraging the simulated Kaia backend and Ethereum integration. Focused on pending data handling, transaction access consistency, and design-time improvements that reduce maintenance and downstream errors.

January 2025 monthly summary for kaia/kaia focused on delivering business value through robust feature work, improved architecture, and reliable build/test tooling. Key efforts centered on EIP-7702 integration with thorough testing, a major refactor of authorization/types handling to align with Geth, and comprehensive uint256 support across core layers and memory interactions. VM/core path optimizations and improved error handling reduced risk of regressions and improved observability. Build tooling and test infrastructure were refreshed to accelerate future work and improve reliability.