It is not confirmed whether Curtis Yarvin is Satoshi Nakamoto or not. While some people speculate that he is, there is no concrete evidence to support this claim. Yarvin himself has denied being the creator of Bitcoin.
Regardless of his potential involvement in the creation of Bitcoin, Yarvin played a significant role in the creation of Urbit, which he co-founded with Galen Wolfe-Pauly in 2002 under the name 'Tlon.' The project has evolved significantly over the years, with the open-source project going public in 2019. Today, Urbit continues to grow and develop, with a vibrant community and ongoing improvements to its technology.