Jeremy Welch of personal key security system Casa describes the company's various services and products, including its $10,000-a-year premium service for HODLers of at least $500,000 worth of cryptocurrency and the Casa node. He explains how he came to start Casa, why using seed phrases for managing security of crypto hardware devices is so problematic, and how customers should set up the keys in their possession for the company's multi-signature solution, in which any transaction requires the use of three of five keys. We go on at length at about potential ways in which an attacker could still force a target, say, at gunpoint, to move money to the hacker's wallet. We also discuss why the company doesn't offer a multi-sig solution for ether, why people choose to run Casa's Bitcoin/Lightning node and where people are using Lightning. Unchained Live With Vitalik Buterin in New York City: Get your tickets here! https://www.eventbrite.com/e/unchained-live-with-vitalik-buterin-tickets-56189456176 Thank you to our sponsors! CipherTrace: https://ciphertrace.com/unchained Microsoft: https://twitter.com/MSFTBlockchain and https://aka.ms/unchained TokenSoft: https://www.tokensoft.io Episode links: Casa: https://keys.casa Jeremy Welch: https://twitter.com/jeremyrwelch The Cutting Room Floor: Jeremy Welch of Casa, in which Jeremy answers by email the remaining questions we didn't get to: https://unchainedpodcast.com/the-cutting-room-floor-jeremy-welch-of-casa/ Casa blog post on the evolution of Bitcoin key management: https://blog.keys.casa/the-evolution-of-bitcoin-key-management/ Ways to store your crypto: https://blog.keys.casa/crypto-101-storing-your-cryptocurrency/ Forbes on Casa's $2 million seed funding: https://www.forbes.com/sites/jeffkauflin/2018/03/02/bitcoin-thieves-beware-super-secure-wallet-maker-casa-raises-2-million/#4c5b2e544230 Casa's seven guiding principles: https://medium.com/casa/seven-guiding-principles-at-casa-92f43e5e546a Announced after we recorded: Casa's new browser extension: https://blog.keys.casa/casa-browser-extension/