标签：#hack

Hi HN, I built Btfy, an experimental blockchain that uses weather observations as a source of unpredictability for consensus The motivation is simple. Proof of Work generates uncertainty by performing computations. I wanted to explore whether we could obtain some of that uncertainty from the real world instead. Btfy combines weather observation data with a Verifiable Delay Function (VDF): Weather Observation Data -> VDF -> Block -> Hash Chain In the current implementation, observation data is co

Hi HN, I'm taking Computer Graphics @ Stanford this summer and wanted to express some very simple concepts I had in mind. That's why I wrote a rotating torus in C. Going from writing a ray-tracer that works in Blender to pure C with no dependencies feels relaxing. Wanted to try Kitty Graphics Protocol on the way, rendering images in terminal felt cool. Open to comments and suggestions.

https://xcancel.com/karpathy/status/2083749667410727319