We're out this week, so we're airing an episode of Bitcoin Explained which had Somsen on as a guest to discuss Federated Ecash. Together with Sjors and Aaron they cover traditional Chaumian ecash, how it can be improved with federations, and how it can be combined with the Lightning Network for improved interoperability. Be sure to subscribe to the Bitcoin Explained podcast on your favorite podcast app for more excellent technical Bitcoin content.