am looking for missed interest payments in the immediate future
US debt is in US dollars and the US can print as many as they like. Not making an interest payment would be a political decision, not an economic decision, and has nothing to do with the level of debt or rate of interest. All historic cases of hyperinflation involved countries whose debt was denominated in a foreign currency. The US will have inflation but it will not have hyperinflation.
Also, there will be no “BRICs currency” as they have nothing in common aside from a vague sense of alienation from the US-built world economic system. Infighting will break apart anything they try before it gets off the ground. These countries are more suspicious of each other than they are of the United States. As such, they have brief periods of limited cooperation followed by nothing or something worse than nothing.
When I want AI, I use this: https://duckduckgo.com/?q=DuckDuckGo+AI+Chat&ia=chat&duckai=1
My worry about AI built into my browser is that it’ll be turned into data mining, training, and revenue generation resulting in exploitation and manipulation of me.