A smart contract is a self-executing computer program that operates on a blockchain platform. It is designed to automatically facilitate, verify, and enforce the terms of an agreement between parties without the need for intermediaries or central authorities. Smart contracts are written in code and are stored on a decentralized network of computers, ensuring transparency, immutability, and security. Decentralization,Autonomy,Transparency,Immutability,Security ,Cost Efficiency,Flexibility are some characteristics of smart contract . Overall, smart contracts offer a promising way to streamline and automate complex processes, remove the need for intermediaries, and increase the efficiency, security, and trust in various transactions and agreements. As the blockchain technology continues to evolve, smart contracts are expected to play a significant role in shaping the future of decentralized applications and services.