An Optimistic Validation Layer is a feature in blockchain technology that enhances scalability and efficiency. It allows transactions to be processed off the main chain, reducing congestion and lowering fees.In this system, transactions are assumed to be valid by default. Validators or nodes confirm these transactions without extensive verification, which speeds up the process. However, there is a mechanism in place to challenge any potentially fraudulent transactions. If a transaction is disputed, it undergoes a rigorous verification process to determine its legitimacy.This setup balances efficiency with security, enabling quicker transactions while retaining a safety net for identifying fraud. As a result, it helps support decentralized applications and smart contracts without overwhelming the main network.Overall, an Optimistic Validation Layer improves user experience by streamlining transactions and reducing costs while maintaining the integrity and security of the blockchain.