It's a cryptocurrency trading bot. These are computer programs that use pre-defined rules to automatically trade cryptocurrencies on exchanges. For example, a bot could be programmed to buy BTC when the price drops below $6000 and sell it when it reaches $8000. Bots can also be programmed to execute more complex strategies, such as arbitrage (taking advantage of price differences between exchanges). Trading bots are widely used by traders to take emotion out of trading decisions and execute trades faster and more efficiently. Many institutional investors also use bots to trade large orders without moving the market.