In October 2008, an anonymous programmer using the pseudonym Satoshi Nakamoto published a whitepaper describing a protocol for a decentralized digital currency. This system was called Bitcoin. Though Satoshi disappeared a few years later, the technology they created continues to reshape the world.
Bitcoin is now a global phenomenon. But why was it created in the first place? Why did it succeed where earlier attempts failed?
While it’s tempting to dive straight into cryptography or blockchain, understanding cryptocurrency requires starting with something more fundamental. To grasp why cryptocurrencies were invented, you must first understand the problems they aim to solve.
So let’s begin with a simple question: What is money, and why does it exist?
The Origins of Money
Imagine two Neolithic farmers. You have grain; I have cattle. We decide to trade. This direct exchange of goods is called barter.
Barter may sound simple, but it’s highly inefficient due to the "double coincidence of wants" problem. For a trade to occur, both parties must want what the other is willing to exchange. If Jane wants a cow from Jim, Jim wants grain from Joe, and Joe wants wool from Sally, the market may never clear under a barter system. Many beneficial trades would never happen.
Anthropologists suggest money likely didn’t originate from barter, but the concept remains a useful starting point.
Often, one commodity becomes highly desired across an economy and begins to dominate trade. This could be cattle, yams—or in prisons, cigarettes. When such a commodity becomes widely accepted, it evolves into a form of money known as commodity money. However, most commodity money isn’t very scalable, and valuable goods varied across early societies.
Some of the earliest proto-money took the form of collectibles: small, mostly homogeneous items like shells or beads. Collectibles were durable, easy to store, difficult to forge, and simple to value. This made them more robust than many forms of commodity money, such as cattle.
The adoption of collectibles as money was a key evolutionary step. Tribes could specialize in hunting particular species, but during off-seasons, food might be scarce. By foraging for collectibles during lean times, tribes could trade with others who had surplus food. This allowed for better food distribution across seasons and improved overall welfare.
Some historians argue money originated from collectibles; others claim it began with credit—informal accounting of favors. In tight-knit communities, credit relationships dominated social and economic interactions.
Even as societies grew, villages remained small and interconnected. Most people knew each other’s creditworthiness. It was common to run a tab at a local tavern. Over time, these credit relationships evolved into promissory notes traded within local economies.
But informal credit systems don’t scale to cities where not everyone knows everyone else. To coordinate larger societies, a formal monetary system became necessary.
This raises another question: What makes something money?
The Properties of Money
The mainstream economic definition of money was first proposed by William Stanley Jevons in 1875. According to Jevons, money serves three primary functions:
- Store of value: The asset must retain its worth over time.
- Medium of exchange: It must be widely accepted for transactions.
- Unit of account: It must provide a standard measure of value.
For an asset to be a good store of value, it must be durable and maintain its purchasing power. Perishable goods, like yams, are disqualified.
A medium of exchange is any asset used to settle transactions. Starbucks rewards points, for example, can be used to buy coffee, making them a medium of exchange—but not a good store of value.
A unit of account is the standard unit for pricing goods. We quote prices in dollars, euros, or other currencies—not in seashells or cattle.
Sometimes, legal tender ceases to function as a unit of account. During Zimbabwe’s hyperinflation in 2009, businesses began pricing items in U.S. dollars due to the rapidly depreciating local currency. The Zimbabwean dollar was no longer useful as money.
Jevons teaches us that almost anything can become money, but few things actually do. Whether physical or digital, metal or paper—if it’s durable and widely accepted, it can serve as money.
This may sound abstract, but history offers many unconventional examples of money. One of the strangest is the story of the Yapese and their Rai stones.
The Rai Stones of Yap
Yap Island in Micronesia is home to a fascinating monetary tradition dating back over a thousand years: the use of stone money.
These massive, doughnut-shaped limestone disks, called Rai stones, weigh up to several tons—too heavy to move easily. So how did the Yapese use them for trade?
Simple: the stones rarely moved. Ownership was transferred through social agreement. Once a transaction was agreed upon, the Rai stone was considered exchanged, regardless of its physical location. The system relied entirely on oral history.
On one occasion, a Rai stone was lost at sea during a storm. Yet the community agreed the stone retained its value and continued to be traded, even though no one could locate it.
Today, the Yapese mainly use U.S. dollars, but Rai stones are still exchanged during special occasions like weddings or political negotiations. Their story illustrates a crucial point: anything can serve as money as long as society agrees on its value. Intrinsic value is helpful but not strictly necessary.
As Yuval Noah Harari wrote in Sapiens:
"Why would anyone be willing to exchange a fertile rice paddy for a handful of useless colored papers? People are willing to do such things when they trust the collective figments of their imagination. Trust is the raw material from which all types of money are minted."
Or, as Peter Thel famously said:
"Money is a bubble that never pops."
The Rai stones show that the form of money is arbitrary—what matters is the function it performs in society.
Metal as Money
The modern evolution of money arguably began with precious metals. Metals were first used as money around 1000 BCE, during the Iron Age.
Why did so many societies gravitate toward metals? Precious metals offered several advantages over collectibles:
- Visually impressive, useful for decoration and jewelry
- Scarce and durable
- Resistant to corrosion
- Difficult to counterfeit
- Divisible
Initially, gold and silver bullion were used directly. Around 600 BCE, the first coins were minted in modern-day Turkey using electrum, a gold-silver alloy.
Why go through the trouble of minting coins? Standardization was one reason, but anthropologists like David Graeber suggest coins emerged to pay organized armies and mercenaries. Soldiers traveled far from home and lacked local credit relationships. They needed a form of money that would be accepted even abroad.
Paper money didn’t appear until much later—around 1000 CE in Song Dynasty China. These early banknotes were theoretically convertible into gold, silver, or silk, but in practice, conversion was rarely allowed. Thus, the first paper money was also the first fiat currency.
What Is Fiat Money?
The term "fiat" comes from Latin and means "by decree." Fiat money has no intrinsic value—its worth derives from social agreement or government enforcement. This contrasts with commodity money, which has inherent value.
Why did fiat money emerge first in China? Graeber suggests China was the only society with a centralized government powerful enough to impose top-down control on its economy. As the ancient Chinese proverb says, "Heaven is high, and the emperor is far away." For most of history, government-issued money had limited impact on local economies.
Over time, technological advances and stronger bureaucracies increased governmental control over economies. With greater control came standardized national currencies.
The History of Modern Banking
Today, most financial transactions are intermediated by banks. But banking is a relatively recent invention. While money-changing, moneylending, and deposits have ancient roots, the first modern banks emerged in Renaissance Italy, operated by merchant families like the Medicis. Bank failures were common.
Paper money arrived in Europe in 1661 as Swedish banknotes. Before central banks, all banks were privately operated. Each issued its own banknotes, typically convertible into gold held in reserve.
The U.S. dollar, now the world’s reserve currency, has a complex history. Early America saw over 5,000 different types of private banknotes in circulation. In 1861, the U.S. printed paper money to fund the Civil War but later returned to metal-backed currency.
Frequent bank panics and runs led to the creation of the Federal Reserve in 1913. The Fed was given exclusive authority to print dollars and tasked with preventing financial crises. Initially, it was required to hold gold backing 40% of its notes.
After World War II, the U.S. emerged as a financial superpower and established the Bretton Woods system. Major currencies were pegged to the dollar, which was convertible into gold. But by the 1970s, the U.S. had printed more dollars than it could back with gold. Foreign governments began exchanging dollars for gold, depleting U.S. reserves.
In 1971, President Nixon ended dollar convertibility into gold, effectively terminating the gold standard and turning the dollar into a full fiat currency.
Why Does Fiat Money Have Value?
With the dollar no longer backed by gold, why did it retain value? Like the Rai stones, its worth stems from collective belief. But more concretely, the U.S. government ensures dollar demand by mandating taxes be paid in dollars. Additionally, the Federal Reserve works to maintain stable purchasing power.
Since the end of the gold standard, central banks have expanded their powers. During the 2008 financial crisis, they bailed out institutions, printed money, and engaged in quantitative easing.
Amid this turmoil, Satoshi Nakamoto was refining the Bitcoin protocol. The genesis block of Bitcoin was mined on January 3, 2009, embedding a headline from The Times: "Chancellor on brink of second bailout for banks."
To understand Bitcoin fully, we must look not only at money but also at the history of payments.
The Evolution of Payment Systems
Throughout history, various technologies have facilitated payments: paper notes, checks, and letters of credit all have ancient origins.
Modern payment technology began with the invention of credit cards. While early versions existed in the 1920s, the first successful general-purpose card was the Diners Club card in 1950. Made of cardboard, it was accepted at 27 restaurants in New York. Visa and Mastercard followed, fueling a revolution in cashless payments.
The next iteration came with the internet. In the early days, most online payments were made via credit cards. But native internet payment systems eventually emerged, such as Cybercash and DigiCash. PayPal, launched in 1998, became the first widely successful online payment company.
Today, consumers use diverse payment methods: credit cards, digital wallets, bank transfers, and, increasingly, cryptocurrencies.
The Birth of Bitcoin
Bitcoin was launched in January 2009. In 2010, one bitcoin was worth $0.003. By December 2017, it reached nearly $20,000—a gain of over 6 million times. Today, its price fluctuates around $57,000. An estimated 250 million people now hold cryptocurrency globally.
But Bitcoin’s story isn’t just about price—it’s deeply rooted in ideology. Its origins lie in the cypherpunk subculture, which long advocated for privacy-enhancing technologies and digital cash. In our next section, we’ll explore the cypherpunks, their earlier attempts at digital currency, and why Bitcoin succeeded where others failed.
👉 Explore the evolution of digital money
Frequently Asked Questions
What is commodity money?
Commodity money is a form of currency that has intrinsic value, such as gold, silver, or cattle. Unlike fiat money, it is valued for its utility and scarcity, not just by government decree.
Why did paper money first appear in China?
China’s centralized government and advanced bureaucratic system allowed it to enforce the use of paper money. In contrast, European societies were more fragmented, and metal coins remained dominant for longer.
How does Bitcoin differ from traditional money?
Bitcoin is decentralized, meaning no central authority controls it. It operates on a public ledger called the blockchain, and its supply is limited to 21 million coins, making it resistant to inflation.
What gives fiat money its value?
Fiat money derives its value from government regulation and public trust. Governments mandate its use for taxes, and central banks manage its supply to maintain stability.
Can Bitcoin become a mainstream currency?
While Bitcoin is increasingly accepted, its volatility and scalability challenges remain obstacles. However, its growing adoption by institutions and technological improvements may enhance its role as a digital store of value.
What was the role of the cypherpunk movement in Bitcoin’s creation?
The cypherpunks advocated for privacy and cryptographic solutions. Their experiments with digital cash and consensus systems laid the groundwork for Bitcoin’s decentralized design.