Self-Custody and Wallet Security: Hardware Wallets, Multisig and Inheritance

About this course

**Block Relations Academy — Self-Custody and Wallet Security**

Own your crypto without intermediaries. Every year, holders lose millions to exchange collapses, phishing drainers, address-poisoning scams, and — just as often — their own mistakes: a lost seed phrase, a single point of failure, no plan for what happens to their keys when they’re gone. This course gives you the complete, hands-on discipline to hold crypto safely for the long term.

You’ll start by building an honest personal threat model, then work through the full custody spectrum from single-signature wallets to multisig vaults to delegated custody — understanding exactly which tool fits which risk. From there you’ll generate and secure a seed phrase the right way, set up and verify a real hardware wallet (Ledger, Trezor, or equivalent), update firmware safely, and actually test your recovery procedure before you ever need it under pressure. You’ll learn how passphrases create hidden wallets and when that extra layer is worth the operational complexity.

The multisig module takes you from M-of-N fundamentals through designing a vault for your own situation, comparing real platforms (Gnosis Safe, Casa, and others), and the mechanics of signing and broadcasting a multisig transaction without a mistake that locks you out. A full module on attacks and defense covers the threats that actually drain wallets today: address poisoning, approval and token-allowance scams, phishing and SIM-swap social engineering, and malware or supply-chain compromises — with verification habits for each.

The final modules turn custody into an ongoing practice: designing a cold storage architecture, building backup redundancy so no single disaster (fire, flood, a forgotten drawer) can destroy your access, and — critically — planning inheritance so your family or executor can reach your assets without ever exposing a seed phrase while you’re alive. A dedicated lesson walks through operational security for families and small teams, and a capstone audit lesson has you write your own security policy.

The course closes with a capstone project: you’ll design a complete, documented custody architecture for your own holdings — threat model, wallet and multisig choices, backup plan, and inheritance instructions — graded on completeness and reasoning, not just the tools you pick. Whether you’re protecting a personal portfolio or managing assets for a family or small team, you’ll leave with a real, working security policy and the confidence to hold crypto safely for the long run.

Includes 24 lessons across 6 modules, module quizzes, a graded capstone, and a shareable Block Relations Academy certificate on completion.