The smallest market cap cryptocurrency is Bitcoin Minetrix (BTCMTX).
This is a new project based on Ethereum that aims to revolutionize the mining field through its Stake-to-Mine model. This model allows users to stake BTCMTX tokens in exchange for mining points, thereby eliminating the need for expensive hardware and making Bitcoin mining more democratized. Although Bitcoin Minetrix is still in the presale stage, it has already raised over $11.2 million