IS curve positive or negative?

Excuse me, but could you clarify for me the nature of the IS curve? Is it positive or negative in its slope, and if so, what does that signify in terms of the relationship between interest rates and the economy? I'm trying to get a better grasp of the intricacies of macroeconomic analysis and how it applies to the current financial landscape, particularly in the realm of cryptocurrency and its potential impact on traditional monetary policy.