The Characteristics of Good Money

Money is one of humanity's oldest technologies. And like all technologies, some versions of it work better than others.

When economists and monetary theorists ask what makes money good, they are really asking: what makes a reliable store of value? The answer comes down to eight concrete properties. Understanding them is the first step to understanding why the history of money is a constant search for something harder, scarcer, and more trustworthy. Bitcoin is the latest, and arguably most complete, answer to that search.

Where Money Began

Before coins, before paper, before banking, people used collectibles. Rare shells, animal teeth, beads, and eventually precious metals served as money not because governments declared them valuable, but because they were naturally scarce and hard to fake.

Nick Szabo, a cryptographer and legal scholar, documented this in his 2002 essay "Shelling Out." His conclusion: the earliest forms of money were chosen because they were difficult to produce and easy to verify. Societies converged on these objects independently across continents and centuries because the underlying logic is universal. Good money is hard to create and easy to trust.

Fiat currencies, including the dollars, euros, and yen we use today, broke from this logic. Since the 1970s, when the US severed the dollar's link to gold, modern currencies have been backed by nothing except institutional trust. That trust has been expensive. The US dollar has lost more than 96% of its purchasing power since the Federal Reserve was founded in 1913.

The Eight Properties

Vijay Boyapati, in his widely read essay "The Bullish Case for Bitcoin," identified eight properties that define a good store of value. These are not arbitrary. They emerge from what money needs to do across time and distance.

1. Durability

Money must survive. A good store of value does not rot, rust, or degrade. Gold excels here: it is chemically inert and essentially indestructible. Paper money is fragile; entire currencies have disappeared with the governments that issued them. Bitcoin exists as long as its network runs, a different kind of durability, but one that has proven resilient across 16 years of adversarial conditions.

2. Portability

You must be able to move your money. Gold fails this test badly. A gold bar is dense, heavy, and expensive to transport securely. This is why gold stayed in vaults and paper certificates moved in its place, and why those certificates eventually became fiat money entirely. Bitcoin solves portability completely. A hardware wallet the size of a USB stick can carry millions of dollars across any border, instantly and without permission.

3. Fungibility

One unit must be interchangeable with another of the same type. A dollar bill should spend the same as any other dollar bill. An ounce of gold is an ounce of gold. Bitcoin is fungible at the protocol level: the network treats all coins equally. In practice, some exchanges flag coins with transaction histories linked to illegal activity, which introduces a minor limitation. This remains an area of active development in the Bitcoin ecosystem.

4. Verifiability

You must be able to confirm that what you hold is genuine. Counterfeit banknotes exist despite sophisticated security features. Gold has been faked using gold-plated tungsten, a deception that has fooled professional investors. Bitcoin cannot be counterfeited. Every transaction is verified by thousands of independent nodes, and the protocol makes it mathematically impossible to create a fraudulent coin.

5. Divisibility

Money must be breakable into small enough units to price anything from a cup of coffee to a skyscraper. Fiat currencies handle this down to cents. Gold is physically difficult to divide into small quantities without specialized equipment. Bitcoin divides into 100 million units per coin, called satoshis. No money in history has been more precisely divisible.

6. Scarcity

This is the most important property. If more money can always be created, existing units lose value. Fiat currencies fail here by design: central banks have the authority and the incentive to expand the money supply. Gold is scarce, but not absolutely: mining output varies, and asteroid mining could theoretically increase supply in the future. Bitcoin's supply is fixed by code at just under 21 million coins. No government, no central bank, no developer can change this without network-wide consensus. It is the first money in history with a provably hard cap.

7. Established History

Trust in money accumulates over time. This is the Lindy Effect at work: the longer something has been considered valuable, the more likely it is to continue being considered valuable. Gold has been used as money for over 5,000 years across every major civilization on Earth. That history is its deepest competitive advantage. Bitcoin, at 16 years old, is the youngest contender, and every year it survives strengthens the case that it will survive the next.

8. Censorship Resistance

This is the newest of the eight properties, and arguably the most critical one for the modern world. In an era of digital transactions and financial surveillance, the ability to transact without permission is a fundamental monetary right.

Fiat money can be frozen by a bank, blocked by a payment processor, or seized by a government. It has happened to dissidents, to protestors, to entire populations during political crises. Gold can be confiscated. The US government did exactly this in 1933, forcing citizens to surrender their gold at a fixed price. Bitcoin transactions cannot be stopped. No entity can prevent a valid transaction from being broadcast and confirmed by the network. Your private keys are the only access control that exists.

This is not about criminality. It is about sovereignty. Money that can be censored is money that belongs to whoever controls the censor.

How the Three Compare

When you score Bitcoin, fiat, and gold across all eight properties, a clear picture emerges.

Fiat money scores well on portability and divisibility in digital form, and benefits from short-term institutional familiarity. But it fails on scarcity, structurally and by design, and it fails completely on censorship resistance.

Gold scores well on durability, fungibility, and established history. Its scarcity is real, though not absolute. It fails on portability and verifiability, and it is only moderately censorship-resistant: physical gold can be regulated, taxed, or confiscated.

Bitcoin scores well on every property except established history, where it is simply too young. That gap closes with every passing year.

The Lindy Effect and Bitcoin's Future

The Lindy Effect, formalized by Nassim Taleb in his book "Antifragile," holds that the future life expectancy of a non-perishable thing is proportional to its current age. A technology that has survived a decade is likely to survive another. For money, this means trust is not given. It is earned through survival.

Gold's 5,000-year track record is not just historical trivia. It is the reason gold remains a reserve asset for central banks worldwide. Bitcoin has now survived 16 years of crashes, exchange collapses, regulatory attacks, protocol debates, and hundreds of media-declared deaths. Each year it survives, its expected future lifespan grows longer.

Bitcoin is not yet where gold is. But it is on the same curve.

What This Means

Understanding the properties of good money reframes the question most people start with ("should I buy Bitcoin?") into a more useful one: does my money hold its value well, and can anyone take it from me?

Fiat currency answers both questions poorly. Gold answers the first reasonably and the second partially. Bitcoin was designed from the ground up to answer both as strongly as possible.

That does not make it risk-free. It makes it worth understanding.