What is the fastest startup to reach $1 billion valuation?

I'm curious to know, what is the fastest startup in the world of cryptocurrency and finance to have achieved a valuation of $1 billion? It's fascinating to see how quickly some companies are able to scale and attract investors, and I'm eager to learn more about the one that managed to reach this milestone the quickest. What factors do you think contributed to their rapid success, and what can other startups in the industry learn from their example?