Developed the LibProverAuth Solidity library for the taikoxyz/taiko-mono repository, focusing on secure prover authentication within smart contracts. The work centered on implementing ECDSA-based signature recovery and on-chain signature validation to ensure only authorized provers could interact with the system. Additional features included handling transaction fees and enforcing validity period checks, which together enhanced the security and auditability of prover interactions. Leveraging expertise in Solidity and cryptography, the developer delivered a modular authentication solution that supports scalable integration with other on-chain components. The contribution addressed authentication challenges in decentralized environments without introducing new bugs during the development period.