David Vorick, the founder of Nebulous and the blockchain Sia, joins the show to discuss Sia and its latest layer 2, Skynet. We also cover David's experience as an ASIC manufacturer, and what he learned about blockchain security models and the merits of ASICs versus GPUs. In this episode:

• How Sia is different from other decentralized storage platforms
• Different models for financing protocol development
• The story behind Nebulous' settlement with the SEC
• How Skynet represents the completion of the original vision for Sia
• David's experience manufacturing ASICs for Sia and Decred – and his clash with Bitmain
• David's proposal to launch new blockchains with 'protectionist' mining in place