Arnold is the co-founder/CEO of Sphere Laboratories, the software company behind SpherePay, a rapidly growing cross-border payments stablecoin API, and SphereNet, a new type of account ledger for regulated fintechs. He started his career in embedded systems engineering for IOT startups before founding Sphere a week after FTX out of a global Stripe hackathon win and Jump Crypto's incubator. He studied computer science at Columbia University, and found Bitcoin in 2009.
