Beginner4 modules · Free
Bitcoin as Money
Four modules on what Satoshi actually built and why the design choices matter.
Start →
A monetary protocol. Not an investment.
The root problem with conventional currency is all the trust that's required to make it work.
Bitcoin removes that requirement. It is not an investment. It is not a trade. It is a monetary protocol — the first system in history that allows value to move between any two parties, anywhere in the world, without a trusted third party in the middle.
This is what it was built for. This is what it does.
Watch the introduction
What this is
Bitcoin is a monetary protocol. Not an investment thesis. Not a speculative vehicle. A peer-to-peer electronic cash system designed so that online payments can move directly from one party to another without going through a financial institution.
That sentence is the entire design brief. Everything about Bitcoin — the 21 million cap, the proof-of-work, the distributed ledger, the ten-minute blocks — exists to fulfil that requirement.
This site exists to explain what that means, and to help you act on it.
Three numbers that matter
21,000,000
The supply cap
The total number of bitcoin that can ever exist. Not by policy. By code.
100%
Uptime
Bitcoin's uptime since block 0, 3 January 2009. No planned outages. No maintenance windows. No weekends.
121
Stock-to-flow
Bitcoin's stock-to-flow ratio after the 2024 halving. Gold's is 62.
The fiat problem
Every currency in history backed by institutional promise rather than mathematical scarcity has eventually been debased. The mechanism is always the same: the authority entrusted to hold the standard finds it more convenient to expand the supply than to maintain it.
This is not a flaw in execution. It is a flaw in design. You cannot fix a system that depends on perpetual trust in institutions by finding better institutions.
Bitcoin does not ask you to trust anyone. It asks you to verify.
New · The Cost of Living, Priced in Sats
There is no cost of living crisis on a Bitcoin standard.
The same weekly shop in the UK, New Zealand and the US, measured twice over ten years. Sourced from official statistics, with the windows that don't flatter Bitcoin shown honestly.
UK weekly shop, 2015 to 2024, in pounds
+24%
The same shop, priced in sats
-99.6%
New · Priced in Bitcoin
In dollars, a house costs more every year. In bitcoin, it costs less.
The median American home, the S&P 500, a year's income and an hour of work — measured against a unit nobody can print. Official statistics, 2014 to 2025.
The median US home, 2014
540.22 BTC
The same home, 2025
4.07 BTC
−99% in bitcoin over 11 years.
See everything priced in bitcoin →Free courses
Structured learning, module by module. No fluff. No upsell.
Intermediate4 modules · Free
Bitcoin for Business
A four-module course for business owners on accepting bitcoin, treasury strategy, Lightning integration, and tax compliance.
Start →
Intermediate4 modules · Free
Living on Bitcoin
A four-module course on the practical mechanics of earning, spending, and transacting in bitcoin in daily life.
Start →
Latest articles
Evergreen, first-principles writing. Two articles a week.
Bitcoin as Money10 July 2026 · 2 min read
Why Is Bitcoin So Volatile? (And Why It Matters Less Than You Think)
Bitcoin is volatile because it is young, small, and monetising in real time. Here is why that volatility exists, why it has been falling, and why it is not the same as risk.
Read →
Practical Guides6 July 2026 · 2 min read
How to Dollar-Cost Average Into Bitcoin
Dollar-cost averaging is the simplest, most disciplined way to accumulate bitcoin without trying to time the market. Here is exactly how it works and how to set it up.
Read →
Bitcoin as Money2 July 2026 · 3 min read
Is It Too Late to Buy Bitcoin?
The question assumes bitcoin is a trade you might have missed. It is a monetary protocol. Here is a more useful way to think about timing, adoption, and what you are actually buying.
Read →
“The root problem with conventional currency is all the trust that's required to make it work. The central bank must be trusted not to debase the currency, but the history of fiat currencies is full of breaches of that trust.”
Start the transition.
Sound money thinking, delivered weekly. No price predictions. No trading signals. Just first principles.