How to Submit Your Smart Contracts to Etherscan

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Etherscan is a free blockchain explorer that allows you to search for transactions, blocks, smart contracts, wallet addresses, and other on-chain data. Smart contracts are computer programs stored on the blockchain that allow us to convert traditional contracts into digital parallels. Anybody can view your source code and interact with your smart contract after it's published on Etherscan when you click the link in your terminal. The last argument—**"Hello World!"**—must have the same string value as the one you used in the initial deployment.