Understanding OpSec principles and personal threat modeling
Booting OpSecOS securely from USB
Navigating the live environment, Tor routing, and system non-persistence

Creating and managing encrypted password vaults offline
Practical setup of KeePassXC for ongoing secure password management

Single-signature wallet basics using Sparrow Wallet
Advantages and risks of self-custody
Multisig wallet concepts, benefits, and security models
Offline multisig key generation using multiple vendors and hardware wallets
Setting up, testing, and signing multisig transactions without internet

Importance of recovery planning and resilience in multisig setups
Step-by-step rebuilding of multisig wallets from multiple seed phrases and public keys across vendors/hardware wallets
Hands-on practice restoring wallets in an air-gapped environment
Verifying multisig wallet integrity and redundancy

Generating seeds using multiple vendors and hardware wallets to avoid single points of failure
Offline use of iancoleman’s BIP39 tool for seed phrase creation and verification
Best practices for entropy

Private transactions with Feather Wallet
Setting up and using Nostr clients (Snort & Iris) for decentralised, pseudonymous messaging
Key management and relay configuration for privacy preservation
Monitoring Bitcoin network and transactions with Mempool.space