When you stop and think about it, it is kind of crazy that we don't have a global network for moving money instantly and cheaply. The internet is more than 30 years old now and it seems to me that this should be a solved problem by now. But it isn't, at least not yet.My next guest on the Fintech One-on-One podcast is David Marcus, the CEO and Co-Founder of Lightspark. If David's name sounds familiar that is because he was the leader of the now-defunct Libra/Diem project at Facebook a few years ago. He is passionate about creating a real-time global network for money movement which is why he founded Lightspark.In this podcast you will learn:His fascinating background in tech.The thought process that went into the Libra/Diem project at Facebook.Why he decided to start Lightspark.An explanation of the Lightning Network that sits on top of Bitcoin.Why they chose to build their technology for the Lightning Network.What Lightspark actually does and who they are working with.Who is using their technology today.The potential throughput for number of transactions per second.How he thinks about solving micro-payments.The regulatory challenges that might come with reaching scale.Why we should think of what Lightspark is doing as an alternative payments rail.Why this is a technology play and nothing really to do with crypto.The potential use cases that can be developed.How he thinks about programmable money.Why it is important that payments systems behave just like the internet (open, real-time and interoperable).The different goegraphies where they have clients today.How their business model works.Why the combination of real-time payments and Lightning is so powerful for the last mile.What a future with real-time global payments could mean for commerce.Connect with David on LinkedInConnect with Lightspark on LinkedInConnect with Fintech One-on-One: Tweet me @PeterRenton Connect with me on LinkedIn Find previous Fintech One-on-One episodes