In this episode of The Crypto Podcast, Roy sits down with Paul Brower, Director of Engineering at Casa — the gold standard in Bitcoin self-custody — where he leads a 12-person team building AI-first workflows to protect billions of dollars in Bitcoin. Before Casa, Paul spent seven years building the first FDA-approved digital pill software, was an early Bitcoin adopter since 2011 (including a Mt. Gox close call), and even spent three episodes on an MTV reality dating show.

Paul breaks down how Casa's multi-sig self-custody system works (2-of-3, 3-of-5), how attackers are now using AI-powered spearphishing and deepfakes to impersonate support staff, and how cryptographic PIN verification protects users from social engineering. He also covers key loss prevention (health checks, hardware redundancy, YubiKeys vs. Trezor/Ledger), Casa's inheritance system for passing on Bitcoin securely, the risks of giving AI agents access to financial accounts, and why physical air-gapped hardware remains one of the strongest defenses against an increasingly AI-powered threat landscape.

Video Chapters

0:00 – Introduction & Welcome

0:23 – Meet Paul Brower: Director of Engineering at Casa

1:20 – Reality TV Detour: Paul's MTV Dating Show Story

2:12 – Why Psychology + Computer Science? Understanding How People Work

2:55 – Building the FDA-Approved Pill with a Potato Battery

12:15 – Career Path: From Pegasystems to Springpad to Casa

15:59 – Bitcoin Since 2011: The Mt. Gox Days & Surviving Every Crash

27:27 – The Problem with PayPal (and Why Bitcoin Is Different)

12:15 – What Is Casa and How Does It Work?

16:01 – Casa's Multi-Sig Setup Explained: 2-of-3 and 3-of-5 Vaults

16:01 – AI-Powered Spear Phishing: How Attackers Are Targeting Crypto Holders 21:21 – Seed Phrases, Floods, Kids, and Why You Need Redundancy

29:23 – Cold Wallets: Trezor vs Ledger vs YubiKey — What Casa Recommends

33:01 – Casa Inheritance Planning: What Happens to Your Bitcoin When You Die? 39:01 – KYC, Privacy & Buying Bitcoin Without Giving Up Your Identity

41:23 – AI Agents + Bitcoin: The Most Exciting Frontier in Crypto

🔗 About Your Host (Roy Coughlan)

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Guest: Paul Brower — Director of Engineering, Casa 🌐 paulbrower.codes 🌐 casa.io

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