Smart contracts, immutable programs that execute when preset conditions are met, are a key feature of blockchain networks, offering transparency and security. The article uses the NFT project Doodles to illustrate how to view a smart contract on EtherScan. By accessing OpenSea, users can find an NFT’s smart contract address under the "Detail" section, which links to EtherScan, a blockchain explorer for Ethereum. Verified contracts on EtherScan are readable and allow interaction through the "Read Contract" and "Write Contract" tabs, although writing requires gas fees. The ability to publicly view smart contracts enables users to verify their functionalities independently, without relying solely on developers' claims. Understanding smart contracts requires a grasp of Solidity, the programming language used to write them, and resources such as Chainlink’s developer community offer valuable learning materials.