Hat Exchange (HAT) started in 2017 and finished in 2018, with a total supply of 7 million tokens. The team/founder is hidden, The main reason this token was listed is desertion.

(from old site) HAT Exchange allows users complete control over their crypto assets and offers the opportunity to purchase crypto with regular currencies. The Hash Algorithmic Technologies (HAT) ecosystem is designed to cater to the needs of the average person. It's vision is to bring the benefits of crypto to the global audience using a simple, intuitive and reliable application. Based on the Ethereum blockchain, it aims to offer support for all ERC-20 tokens and major cryptocurrencies like BTC, ETH, LTC.