January 2026: Delivered two high-impact changes in paritytech/foundry-polkadot that enhance contract data handling, API usability, and transaction integrity. Key outcomes include immutable storage support in the RPC interface with a refactored API for clarity and efficiency, endianness handling improvements, and added tests and documentation to ensure correctness. Also resolved a critical impersonation marker collision by switching from 0x00 to 0xDE, preventing interference with Solidity mapping key computations and improving transaction signature integrity. These changes reduce deployment risk, improve developer experience, and bolster tooling compatibility with Sourcify and solc. Expanded test coverage and documentation accompany the feature work to support maintainability and long-term reliability.

March 2025: Polkadot-Blockchain-Academy/pba-content delivered a targeted curriculum enhancement for Module 3, focusing on smart contracts and Polkadot architecture with emphasis on EVM compatibility and a reentrancy bug demonstration. The update includes AB encoding/decoding examples, clarified differences in addresses and gas between EVM and Substrate, and the introduction of the pallet-revive module to bolster cross-chain compatibility and teaching cohesion. Commit for deliverable: 94c9bcac842774aabe7fa241b2722c8b8fbc2c19.