Linear Finance is a decentralized finance (DeFi) startup that operates in the cryptocurrency market. The company provides a platform, Linear.Exchange, for staking and building LUSD, a type of cryptocurrency. Staking is a process where users participate in a proof-of-stake (PoS) blockchain network by holding and validating transactions of a particular cryptocurrency, in this case, LUSD.

The platform accepts a mixture of LINA tokens, which are the native tokens of Linear Finance, and other major cryptocurrencies. Linear Finance's unique selling proposition is its custom-built swap functionality. This feature allows users to save on gas fees, which are the costs associated with executing transactions and smart contracts on the Ethereum blockchain. It also enables the composability of LINA tokens across different blockchains, meaning they can be used in various blockchain networks.

Linear.Exchange also enables the trading of a variety of liquid assets, referred to as 'Liquids'. These include spot cryptocurrencies, commodities, and thematic indexes. The platform boasts nearly instant confirmation time and immediate finality, making it an efficient trading platform.

Users can also lock their LUSD or LP tokens on the platform to passively earn interest. This interest is paid in LUSD, BUSD, and LINA tokens, providing an additional income stream for users.

Linear Finance's business model is likely based on transaction fees from trades made on its platform and possibly from the staking process. Its clients are primarily cryptocurrency traders and investors who are looking for a platform to stake, trade, and earn interest on their digital assets.

Keywords: Decentralized Finance (DeFi), Cryptocurrency, Staking, LUSD, LINA Tokens, Blockchain, Swap Functionality, Gas Fees, Liquid Assets, Interest Earning.