Andy worked on protocol state management for the propeller-heads/tycho-simulation repository, focusing on ensuring correctness and stability in handling tick liquidity attributes. Using Rust and leveraging his experience in blockchain and smart contract development, he delivered a targeted fix that corrected the prefix used for tick liquidity keys, changing it from 'tick/' to 'ticks/' across protocol state files. This adjustment addressed a subtle source of state drift, ensuring that updated and deleted tick attributes were processed reliably. Andy’s work demonstrated careful attention to protocol data integrity, reducing the risk of inconsistencies and contributing to robust state management in a critical code path.