Launch HN: Sparkswap (YC S18) – Buy Bitcoin Instantly over the Lightning Network

Hi everyone! I’m Trey, the founder of Sparkswap ( https://sparkswap.com ). We've built a new desktop app to purchase Bitcoin with USD directly into your wallet using the Lightning Network, instantly. This is not Bitcoin held in your name by an institution - it’s your wallet, and your private keys. Today, the vast majority of the billions of dollars worth of Bitcoin^1 traded on a daily basis is done on custodial exchanges, meaning users deposit their currencies with the exchange, trade within the system, and then withdraw their new currency balance at a later time. This runs counter to the original goal of Bitcoin, which was to give users full control of their money through a system without central authorities or middlemen. Unfortunately, users historically haven’t had much of a choice, as using custodial exchanges has been the only way to get reliable pricing, use a bank account, and achieve reasonable settlement times for transactions. Then came the Lightning Network (L