The Last Money: Bitcoin, the Halving, and the End of Monetary Evolution

Ask what money is for, and most answers come down to one thing. Money is how you move the value of your work across time. You earn today so you can spend later, and money is the tool that carries that value forward. The whole history of money is really one long search for a tool that carries value without leaking it.

That search has a direction. For thousands of years, money kept moving toward whatever was hardest to make more of. And every few years, Bitcoin performs a small ritual that pushes one money further in that direction than anything before it. The ritual is called the halving.

This essay argues that the halving is not mainly a market event. It is the visible edge of a bigger idea: that true scarcity, once it exists in a form nobody can fake, is a one-time discovery in the history of money. Whether that makes Bitcoin the last money is the question worth sitting with.

Money has always moved toward the hardest good

The Austrian tradition, following Carl Menger, describes money not as something a ruler invents, but as something that grows out of ordinary trade. In a world of barter, some goods are simply easier to pass on than others. People start accepting the most tradeable good, not because they want it, but because they know the next person will take it too. Over time a whole community lands on the same good, and that good becomes money.

What decides the winner is one specific quality. The good that wins is the one whose existing stock is large compared with how much new supply can be added each year. Seashells lost the job once they could be gathered in bulk. Silver held it for a while, then lost ground to gold, whose above-ground stock grows by only one to two percent a year even when miners work hard. That resistance to being multiplied is what we mean by hard money.

Scarcity is not the only thing that makes money good. Durability, portability, verifiability, and the freedom to transact without asking permission all matter too, and we walk through all of them in the characteristics of good money. This essay follows just one of those properties, scarcity, because that is the property the halving is built to guarantee.

Gold was the best money the physical world could offer. But it was never perfectly hard. New mines open, refining improves, and in principle a rich enough seam, or one day an asteroid, could add to the pile. Hardness was always a matter of degree. Bitcoin's claim is that, for the first time, it became absolute.

What the halving actually does

New bitcoin enter the world through exactly one door. When a miner adds a block, they include a special transaction, the coinbase transaction, that pays them a fixed number of brand-new coins plus the fees from every transaction in that block. That fixed number is the block subsidy, and the subsidy is the only source of new supply.

The halving is the rule that shrinks that door. Every 210,000 blocks, which averages close to four years, the subsidy is cut in half. It started at 50 bitcoin per block in 2009 and has stepped down four times since. This is not a policy a committee reviews. It is arithmetic, and every computer on the network enforces it by rejecting any block that pays the wrong amount.

Epoch start	Block height	Block subsidy	Approx. new BTC per day
2009 (genesis)	0	50 BTC	7,200
Nov 2012	210,000	25 BTC	3,600
Jul 2016	420,000	12.5 BTC	1,800
May 2020	630,000	6.25 BTC	900
Apr 2024 (current)	840,000	3.125 BTC	~450
~Apr 2028 (next)	1,050,000	1.5625 BTC	~225

We are in the fifth epoch. Since April 2024 the subsidy has been 3.125 bitcoin per block, so the network now creates about 450 new coins a day. The next halving triggers at block 1,050,000, expected around April 2028, and drops the subsidy to 1.5625 bitcoin. By then more than 20 million of the roughly 21 million coins that will ever exist have already been issued. Fewer than one million are still to come over the next century, and the final fractions arrive around the year 2140.

Notice what that does to the miners' pay. New coins are one part of their reward, and fees are the other. As the subsidy keeps halving toward zero, fees have to carry more and more of the load. That shift matters, and we come back to it below.

One more detail rewards a closer look. The total never quite reaches 21 million. Each halving divides the reward down to the smallest unit and drops the remainder, so the sum keeps getting closer to the round number, close to 20,999,999.98 bitcoin, before new issuance stops for good. It is a small point, but it captures the character of the system. The limit is not a slogan. It is simply what falls out of the math when you follow the rule to its end.

There is a quiet elegance here too. Bitcoin does not ask a calendar when four years have passed, because leaning on the outside world would bring back the very dependency it was built to avoid. It counts its own blocks. A higher block height means more time has passed, and the mining difficulty resets about every two weeks to keep blocks arriving near the ten-minute average. The network keeps its own time, on its own terms.

Hardness that rises on a schedule

Put the halving next to gold and the difference sharpens. Gold's new supply is roughly steady. Miners add a small percentage to the stock year after year. Bitcoin's new supply does the opposite. It halves, then halves again, on a path that bends toward zero.

So Bitcoin does not merely have low inflation in the monetary sense. Its rate of new supply is set to fall until it disappears. Today the network's yearly new-supply rate sits below one percent, and after the 2028 halving it drops to roughly half of that. No physical commodity can promise that, because no physical commodity can promise that nobody will ever find more.

One popular idea deserves a careful word. The ratio between the existing stock and the yearly new flow is a fair way to describe how hard a money is, and by that measure Bitcoin's hardness passes gold around the late 2020s. That is a statement about scarcity. It is not a forecast of price. Reading a supply schedule as a price prediction is a mistake this essay will not make, and neither should you.

The mirror image: what inflation does

If the halving is a machine for making supply harder, the money most people use runs that machine in reverse. Central banks and everyday bank lending expand the supply of Euro and Dollar on purpose, and the stated goal is to keep prices rising at a gentle, steady rate. To see why that matters, start with a simple thought experiment from the Austrian view of money.

Suppose everyone woke up tomorrow with twice as much currency in their account. Would the world be twice as rich? Clearly not. The goods and services on offer had not changed, only the number of claims chasing them. Money is a way to exchange value, and adding units does not add wealth. It just thins out the value of each unit. The new money is also never handed out evenly, which is where the Cantillon effect comes in, a topic large enough to deserve its own essay and not this one.

The slow erosion is easy to shrug off, because it is slow. At a target near two percent a year, prices roughly double over about three and a half decades. Put another way, a currency can lose about half its buying power across a single working life. That is not a dramatic crash. It is a quiet, compounding transfer that most people never notice happening.

Here is the part the everyday inflation number tends to hide. Technology is deflationary. We keep learning to make more with less, so in a stable money most things should slowly get cheaper. In 2002 a 64 megabyte memory card cost around fifty Euro/Dollar. Today a card holding thousands of times more storage costs less. When prices for most goods still rise year after year despite that downward pull, it suggests the growing money supply is doing real work underneath. This is the essay's thesis, and it deserves a fair hearing of the other side.

The mainstream case for a small, positive inflation rate is not foolish, and honesty means stating it at its strongest. Its defenders argue that mild inflation greases the labor market, because wages are hard to cut and easier to adjust when the headline number can drift up. They argue it keeps a safety buffer above zero, so policy has room to act in a downturn. And they warn that outright falling prices can freeze spending and turn a slump into a spiral. These are serious arguments.

The Austrian reply is to separate two things the word deflation blurs together. Falling prices that come from a more productive society are the reward for progress, and people do not stop buying food or phones just because next year's version might be cheaper. The dangerous kind is a collapse of credit after an unsustainable boom, and the fear of that spiral quietly assumes the boom should have happened at all. On this reading the cure feeds the disease it claims to treat. Reasonable people still disagree here, and you should weigh both accounts rather than take either on trust.

True scarcity can only be discovered once

If a fixed supply is so valuable, why can nobody just build a scarcer coin and win? Say someone launches a new token capped at 10 million units instead of 21 million. On paper it is scarcer. In practice it offers no real edge, and seeing why is the heart of the matter.

The scarce thing was never the number in the code. Anyone can type 21,000,000, or 10,000,000, or any figure they like. What is genuinely hard to produce is a promise about that number that nobody can break. That promise is made of real things: a worldwide network of independent computers that all reject any attempt to cheat, a mountain of past mining work that would cost an impossible amount of energy to redo, and enough years of the system keeping its word that the world has learned to trust it. Name those pieces if you like. The names are the network effect, the cost of attacking it, and the simple habit of things that have lasted tending to last.

None of that can be copied by copying the code. A clone can inherit the rules in an afternoon and inherit none of the trust, because trust is built from time, energy, and the commitment of many people, and a new project has to earn all of it from scratch against a rival that already has it. So a coin sold as scarcer than Bitcoin is a trick dressed as an upgrade. The rule is trivial. The trust behind it is not, and the trust was the whole point.

That is why the discovery does not get made twice. True, checkable scarcity in a money is the kind of thing that happens once. After it happens, the interesting question is no longer how to build it, but whether people will use it.

The hardest money and where it flows

Once a money is that hard, a question of behavior follows. Which money do people spend, and which do they keep? Many readers know Gresham's law: bad money drives out good. It is true, but only under one condition. When a law forces people to accept both monies at a fixed rate, they wisely pass on the weaker coin and hold on to the stronger one, and the good money vanishes from circulation.

Take away that force, and the arrow flips. When people are free to choose, they tend to spend the money that is losing value and save the money that holds it. That pattern is sometimes called Thiers' law. The soft money does the daily work of buying groceries, and the hardest money quietly becomes the thing people save.

From here comes the essay's boldest claim, and it is a claim about incentives, not a prophecy. If, over long stretches, people keep spending the softer currencies and saving the hardest one, then the hardest money slowly takes over the job of storing value. That is a tendency, not a timeline. Nothing in it says when, or how far. And it is not a suggestion about what you should do with your savings.

Open to everyone, closed to no one

There is a reason a money needs to be more than just scarce to become the last money. It also has to be open to everyone. A money that can shut people out, or be switched off for the wrong person, can never be the final money, because the moment it excludes someone it stops being universal.

Every money before Bitcoin had a gatekeeper. It needed someone trusted to issue it, store it, or approve its movement: a king, a bank, a central bank. History is unkind about how that power was used. The temptation to quietly print more, to fund a war or paper over a shortfall, has proven almost impossible to resist whenever one party held the lever. And the same gatekeeper that can print can also say no. Bank accounts get frozen. Payments get blocked. Whole groups of people, from dissidents to ordinary citizens in a crisis, have been cut off from their own money.

Bitcoin removes the gatekeeper. You do not need anyone's permission to use it. There is no application, no approval, no account that someone else can close. Anyone, anywhere, with any background, can hold bitcoin and send it to anyone else. It does not matter who you are, where you live, or whether a bank considers you worth serving. A valid transaction cannot be stopped, reversed, or filtered by a third party, because there is no third party. Your keys are the only thing that controls your coins.

Underneath this sits a deeper problem that Bitcoin quietly solved. Normally, a digital record that says a vault holds gold is only as trustworthy as the company keeping the vault. You are trusting them, not the record. This is often called the oracle problem, and it is why almost every digital claim on a real asset comes back to faith in an institution. Bitcoin's answer is proof of work. A valid block is provably the result of real energy spent in the physical world, so the ledger anchors itself to reality without asking you to trust an issuer. That anchor is what lets a purely digital thing be checked instead of trusted.

This is also the line that separates Bitcoin from the thousands of tokens that borrow its language. Most of them keep a company or group that can change the supply, freeze balances, or reverse payments. That is not a lighter version of the same idea. It is the gatekeeper Bitcoin was built to remove, brought back under a new name, with the same weak point waiting in the same place.

Keeping it usable: the base layer and the layers above

Openness raises an obvious worry. If Bitcoin is scarce and space in each block is limited, will the fees to use it eventually price ordinary people out? A money that only the wealthy can move is not open to everyone in any way that counts. This is where Bitcoin's design splits into layers.

Think of the main Bitcoin network, the base layer, as a giant, ultra-secure vault. It is deliberately slow and deliberately limited, because those limits are what keep it decentralized and hard to attack. As the block subsidy fades toward zero, the fees people pay for that scarce block space become the reward that keeps miners securing the vault. So base-layer space is meant to be valuable. High fees there are a feature, not a bug.

But you do not need the vault for a cup of coffee. On top of the base layer sit faster networks, and the most developed today is the Lightning Network. Lightning lets people open a payment channel with a single base-layer transaction, then send money back and forth almost instantly and for tiny fees, without touching the main chain each time. Only when they open or close the channel does the base layer get involved. In effect, one on-chain transaction can stand in for a huge number of everyday payments.

That is how the two ends fit together. Everyday spending happens cheaply and quickly on Lightning and other layers, while the base layer does what it is best at: settling large amounts of value with maximum security. When the last new coins have been mined around 2140, the miners securing the network are paid by the fees from that settlement work, including the fees to anchor millions of higher-layer payments. Scarcity at the base, and affordability at the edges. A money can only be the last money if it works for everyone, not just for those who can afford a block to themselves.

Money as stored life energy

Come back to where we started. If money is a way to carry the value of your work into the future, then the quality that matters most is whether the container leaks. Picture your savings as water carried in a bucket across the years. Fiat money is a bucket with a hole drilled in it on purpose, because steady inflation is the stated goal. Gold is a far better bucket, but it seeps slowly as new metal is mined, and the paper claims written against it have long outrun the metal itself.

Bitcoin is the first container built not to dilute the people already holding it. No new units can be created to fund someone else's project at your expense, because the schedule is fixed and no single party can override it. Your share of the total cannot be quietly shrunk by printing more.

Here is where the source idea's boldest line needs care. It is tempting to say the value simply rises forever, and that is a claim this essay refuses to make. The disciplined version is narrower, and more interesting. Against a supply that cannot grow, a society that keeps getting more productive would find that the same money buys more over long stretches of time. That is the Austrian deflation argument, stated as a tendency and marked clearly as the author's reasoning. It is not a promise about price, not a timeline, and not advice to anyone.

The honest counter-case

An essay that only argues one side is advocacy, not thinking. So here is the strongest case against everything above. Take it seriously, because the thesis is only worth holding if it survives.

First, this is a bet on the future, not a settled fact. Money becomes money through mass adoption, adoption is a social process, and social processes can stall or reverse. Second, states are not passive. They can tax it, choke the points where currency meets Bitcoin, or make holding it costly and awkward, and the phrase separation of money and state describes a hope, not something that has already happened. Third, volatility cuts against the store-of-value story. An asset that swings this hard is also, right now, a speculative one, and squaring those two roles is unfinished business.

Fourth, and most technical, the whole security model leans on a future that has not arrived. As the subsidy keeps halving toward zero, the network will have to be paid for almost entirely by transaction fees. Whether fee revenue, even with settlement from layers like Lightning, will grow enough to keep the chain secure is a genuine open question. If it never does, the argument has a real problem at its foundation.

So it is fair to ask what would prove the thesis wrong. This reading would fall apart if the supply cap were ever credibly changed by consensus, if the fee market failed to pay for security over the long run, or if, given a free choice over many years, people simply chose not to save in it. Naming those failure points is not hedging. It is the difference between a conviction and a slogan.

So, the last money?

The halving, then, is not a price engine. It is the visible edge of a stranger idea. A money can be made truly scarce, this can be done only once in a way no copy can fake, and a good with that property slowly pulls in the savings of anyone free to choose. Every four years the door for new supply narrows again, on schedule, until one day it closes for good.

But scarcity alone was never enough. To be the last money, a money also has to be open to everyone and usable by everyone: no gatekeeper who can shut you out, and cheap enough at the edges that no one is priced out of their own money. Bitcoin is the first thing that lines up all of these at once. Scarce at its core, open to anyone, and layered so it can still work for daily life.

Whether that makes it the last money is not something math can decide. It will be settled, if it is ever settled, by millions of individual choices about where to store the value of a life's work, and those choices are still being made. So the honest answer to the question in the title is not yes. It is that Bitcoin is the first money that could be the last. For a species that has spent its whole history trading up from seashells, that alone is something new under the sun.