Solana (SOL) is a digital currency based on a high-performance blockchain, launched in 2020 to address the issues faced by networks like Ethereum, such as slow speeds and high fees. Solana relies on an innovative mechanism called "Proof of History" that allows thousands of transactions to be processed per second at a very low cost. It is one of the leading networks supporting DeFi applications, NFTs, and decentralized gaming. The currency (SOL) is used to pay network fees, participate in governance, and staking. Thanks to its speed and support for the developer community, Solana has become a popular choice among both investors and programmers.