6 Modules. 33 Lessons.
Complete Bitcoin Security.

An introduction to Bitcoin as a decentralised, peer-to-peer electronic cash system. Covers the origin and context of Bitcoin's creation, Satoshi Nakamoto's whitepaper, and the core problem Bitcoin solves: trusting a third party to hold your money.

A plain-English walkthrough of how blocks are chained together and why this structure makes Bitcoin transactions virtually impossible to reverse or tamper with.

Demystifying the terminology. A 'wallet' does not hold coins — it holds keys. Understand the difference between private keys, public keys, addresses, seed phrases, and HD wallets.

How value actually moves on the Bitcoin network, and why understanding UTXOs is critical for both security and privacy.

Why 21 million is not arbitrary: the economic design of Bitcoin's issuance schedule, the halving, and why scarcity is a feature, not a bug.

What makes money 'good'? Examine the classical properties — scarcity, durability, divisibility, portability, fungibility — and evaluate how Bitcoin scores against gold, fiat, and altcoins.

Bitcoin's decentralisation is the result of a specific historical accident — Satoshi's anonymity and disappearance — that cannot be replicated. Why all other cryptocurrencies have identifiable founders or controlling entities.

A critical analysis of the most common arguments for altcoins — 'faster transactions', 'smart contracts', 'Ethereum is more useful' — and why these arguments miss Bitcoin's fundamental value proposition.

Why Bitcoin's first-mover advantage is compounding and not easily displaced. The concept of a Schelling point and why Bitcoin fills that role for global, neutral money.

The history of exchange collapses (Mt. Gox, FTX, Celsius) and why holding crypto on exchanges is fundamentally different from holding Bitcoin in self-custody.

A full node downloads and independently verifies every block in Bitcoin's history. It is the only way to be certain your Bitcoin is real — without trusting a third party, an app, or a company.

You don't need an expensive machine. Realistic hardware requirements and popular purpose-built node options including Raspberry Pi, Umbrel, Start9, and dedicated PCs.

Step-by-step walkthrough of downloading, verifying, and installing Bitcoin Core — the reference implementation of Bitcoin — including how to verify the software's authenticity before running it.

Connect your hardware wallet to your own node so your transaction data never goes to a third-party server. Protects both your privacy and your verification integrity.

An introduction to the Lightning Network — Bitcoin's layer 2 payment protocol — for fast, low-cost Bitcoin payments without giving up sovereignty.

Not all wallets are created equal. The spectrum from fully custodial (exchange) to fully sovereign (air-gapped multisig) — and how to choose the right tool for different amounts and use cases.

Hands-on walkthrough of setting up the most popular hardware wallets: Coldcard, Ledger, Trezor, and Keystone. Device verification, seed generation, PIN setup, and first use.

Your seed phrase is your Bitcoin. Losing it means losing access forever. Every method of backing up a seed — from paper to steel — and the pros and cons of each.

Multisig requires M keys from N total keys to authorise a transaction. It is the gold standard for serious Bitcoin security because it eliminates every single point of failure.

A complete practical walkthrough of creating a 2-of-3 multisig vault using three hardware wallets and Sparrow Wallet as the coordinator. Create, receive, sign, and broadcast.

The most important lesson in the module: you must test your backup before you trust it. Simulate a full recovery on a fresh device using only your seed phrase and wallet descriptor.

The Bitcoin blockchain is a permanent public record. Exactly what is visible, to whom, and under what circumstances — including how chain analysis firms cluster addresses.

One of the most powerful — and most overlooked — privacy tools: choosing exactly which UTXOs you spend to prevent different coins from being merged and linked.

CoinJoin combines multiple users' UTXOs into a single transaction with equal-value outputs, making it impossible to determine which output belongs to which input. The most effective on-chain privacy tool available.

Bitcoin purchased from a KYC exchange is permanently linked to your identity. Strategies for acquiring Bitcoin with reduced identity exposure, within the law.

Every time your wallet connects to the Bitcoin network, your IP address can be logged. How to route Bitcoin traffic through Tor to prevent network-level surveillance.

The Lightning Network offers some privacy advantages over on-chain transactions but also introduces new considerations. Both sides covered.

Security is not one-size-fits-all. Who might want your Bitcoin, how might they try to get it, and what is your realistic exposure? Calibrate your setup to your actual threat landscape.

The biggest security risk is often the person holding the Bitcoin. OPSEC is about not making yourself a target by inadvertently revealing that you hold significant value.

If you were hit by a bus tomorrow, could your family access your Bitcoin? A practical inheritance plan that works even for non-technical heirs.

In a multisig setup, the physical locations of your keys matter enormously. How to distribute keys across locations to protect against fire, flood, theft, and family emergencies.

Your security setup from day one may not be appropriate when your holdings grow or your circumstances change. Clear thresholds and triggers for upgrading.

More Bitcoin is lost through user error than stolen by hackers. The most common mistakes catalogued so you can consciously avoid every one.

Security is not a one-time event. The ongoing habits and periodic reviews that keep a Bitcoin security setup healthy over years and decades.