BITCOIN VS. THE FIAT SYSTEM

FROM THE FIAT SYSTEM TO BITCOIN

INTRODUCTION

To understand the significance of Bitcoin, it is necessary to place it within the context of the current monetary system. Since the end of the 20th century, the global economy has operated almost entirely on so-called "fiat" currencies. This term refers to currencies that are not backed by any physical asset like gold or silver, but rather by the trust placed in the institutions that issue them. Their value is not guaranteed by a tangible reserve: it rests on the credibility of the states and central banks that manage their circulation.

This monetary system gradually became established worldwide after the definitive abandonment of the gold standard in the 1970s. Since then, national currencies have been created and regulated by monetary institutions tasked with managing economic activity, stabilizing financial markets, and maintaining a certain level of growth. In this model, money creation becomes a tool of economic policy. Central banks can adjust the money supply to influence interest rates, support investment, or respond to financial crises.

This system offers certain advantages. It allows states to intervene quickly during economic downturns, finance public infrastructure, or provide support to struggling financial institutions. But it also introduces a fundamental characteristic of the fiat system: the money supply can be increased almost indefinitely. Unlike limited natural resources such as gold, fiat currencies can be created in large quantities whenever monetary authorities deem it necessary.

This capacity for monetary expansion plays a central role in the contemporary economy. It directly influences inflation, the value of savings, the structure of public debt, and the overall functioning of financial markets. For some economists, this flexibility is an essential tool for stabilizing modern economies. For others, it represents a potential source of long-term economic imbalances.

It is in this context that Bitcoin emerges as a radically different alternative. Whereas the fiat system relies on institutions capable of adjusting the money supply, Bitcoin operates according to programmed rules that strictly limit the creation of new units. The protocol is independent of any central authority, and its monetary policy is embedded in the network's code itself.

Comparing Bitcoin to the fiat system is therefore not simply a matter of contrasting a new technology with traditional currencies. It is about comparing two fundamentally different monetary models. One relies on the institutional management of money and the flexibility of money creation. The other relies on a decentralized protocol whose rules are fixed, transparent, and applied collectively by a global network of computers.

To understand this opposition, it is necessary to examine several mechanisms that structure the current monetary system: inflation, money creation, public debt, and the role of central banks. These elements help to better understand why Bitcoin is often presented as a radically different monetary alternative in the contemporary digital economy.

1/ INFLATION

Inflation is one of the most important concepts for understanding how the modern monetary system works. In its most common usage, inflation refers to a general and sustained increase in prices within an economy. When inflation rises, the purchasing power of money decreases: with the same amount of money, it gradually becomes possible to buy fewer goods and services. This phenomenon is now considered a normal component of economic functioning. In most developed countries, central banks even aim for a moderate level of inflation, often around 2% per year. According to this logic, low inflation promotes economic growth by encouraging consumption and investment rather than the accumulation of monetary savings.

However, behind this simple definition lies a more complex monetary reality. Historically, the term inflation did not simply refer to rising prices. It referred to an increase in the amount of money circulating in the economy. When the money supply increases faster than the production of goods and services, the relative value of each unit of money naturally tends to decrease. In modern monetary systems, this increase in the money supply can stem from several mechanisms. Central banks can create money to support the financial system, purchase government bonds, or inject liquidity into the markets. Commercial banks, for their part, also participate in money creation when they extend credit.

When a loan is granted, new deposits appear in the banking system, increasing the amount of money available in the economy. This process of money creation plays a central role in the functioning of contemporary economies. It allows for the financing of investments, supports economic activity, and accommodates demographic and technological growth. But it also introduces a structural consequence: money gradually loses its value over time. This erosion of purchasing power is particularly visible in the long term. If we observe the evolution of many national currencies over several decades, we see that their relative value has decreased significantly. Goods that cost a few monetary units several decades ago now require much larger sums.

This phenomenon does not necessarily mean that the economy is malfunctioning. It simply reflects the fact that the amount of money in circulation has increased continuously. For individuals, inflation profoundly alters how saving is viewed. Holding onto money in monetary form for extended periods can lead to a gradual loss of purchasing power. This is why modern financial systems often encourage individuals to invest their capital in various assets: real estate, stocks, bonds, or specialized savings products. These investments are intended to offset the effects of inflation and preserve the value of assets over time. However, this dynamic also introduces a significant cultural shift.

In a monetary environment characterized by persistent inflation, money ceases to be perceived as a stable store of value. Instead, it becomes an instrument of economic circulation, intended to be spent or invested relatively quickly. This logic contrasts sharply with historical monetary systems based on scarce resources like gold or silver. In these systems, the increase in the money supply depended on the discovery and extraction of new physical resources. This inherent constraint limited the rate at which the quantity of money could increase. Bitcoin introduces a radically different approach to this monetary landscape. Unlike modern fiat currencies, whose supply can be adjusted by monetary authorities, Bitcoin has a fully programmed monetary policy.

The protocol stipulates that the total number of bitcoins that can exist is limited to twenty-one million. This limit is encoded in the network's code and verified by all the nodes participating in the system's operation. This characteristic means that the Bitcoin money supply cannot be arbitrarily increased to serve economic or political objectives. The creation of new bitcoins follows a predetermined schedule, with the issuance gradually decreasing over time through events called halvings. In this model, monetary inflation is strictly controlled and diminishes as the network approaches its maximum issuance limit. This structure contrasts sharply with traditional monetary systems, where increasing the money supply is a central tool of economic policy.

Comparing Bitcoin to the fiat system thus highlights two very different approaches to monetary management. In the traditional model, inflation is considered a normal and sometimes even desirable phenomenon to accompany economic growth. In the model proposed by Bitcoin, money creation is limited by technical rules that can only be modified with network consensus. This difference is not only about the technology used to issue currency. It reflects two distinct visions of the relationship between money, value, and time. Whereas fiat currencies rely on flexible monetary expansion managed by institutions, Bitcoin offers a system where monetary scarcity is defined by a transparent protocol and applied collectively by a decentralized network.

2/ MONETARY CREATION

Money creation is one of the fundamental mechanisms of the modern financial system. Contrary to popular belief, money is not limited to physical banknotes and coins in circulation. In contemporary economies, the vast majority of money exists in digital form in bank accounts. This money is constantly created, transformed, and destroyed through the functioning of the banking system. In the current fiat system, money creation relies primarily on two actors: central banks and commercial banks. These institutions play different but complementary roles in expanding the money supply. Central banks occupy a central position in the monetary architecture.

They are responsible for regulating the monetary policy of a country or economic zone. Their mission generally consists of maintaining price stability, supporting economic activity, and ensuring the soundness of the financial system. To achieve these objectives, they have several tools at their disposal, the most important of which is the ability to create money. This money creation can take different forms. Central banks can buy government bonds, provide liquidity to commercial banks, or intervene directly in financial markets. These operations increase the amount of money available in the economic system. When a central bank injects new liquidity, it increases the reserves of commercial banks, which then facilitates the granting of new loans.

However, in practice, most money creation doesn't come directly from central banks. It comes from the day-to-day operations of the banking system itself. Commercial banks create money when they make loans. This mechanism may seem counterintuitive. Many people imagine that banks simply lend out money that has been deposited by their customers. In reality, the process is different. When a bank extends credit to an individual or a business, it doesn't simply transfer existing money. It simply credits a new amount to the borrower's account. This credit creates new money in the banking system. So, when a mortgage is granted or a business obtains bank financing, new deposits appear in the economy. This newly created money can then circulate, be spent, transferred, or reinvested.

As long as credit exists, this money remains part of the money supply. This process explains why credit growth plays a central role in monetary expansion. When banks grant more loans, the amount of money in circulation increases. Conversely, when loans are repaid, the corresponding money gradually disappears from the system. Money creation is therefore closely linked to the credit cycle. This dynamic is particularly visible during periods of economic expansion. When confidence is high and growth prospects are favorable, businesses invest, households borrow, and banks extend more credit. This increase in credit leads to an expansion of the money supply, which can stimulate economic activity.

But this system can also generate imbalances. Excessive credit growth can contribute to the formation of financial or real estate bubbles. When asset prices rise rapidly, borrowers may be incentivized to take on more debt, further fueling credit expansion. If confidence wanes or economic conditions deteriorate, these dynamics can reverse abruptly. Financial crises throughout modern history often illustrate this type of cycle. Prolonged periods of credit expansion can be followed by phases of contraction where banks become more cautious, reduce lending, and seek to strengthen their balance sheets. At these times, central bank intervention often becomes necessary to stabilize the financial system and prevent an excessively sharp contraction in economic activity.

One of the tools used in these situations is the large-scale injection of liquidity into financial markets. Following the 2008 global financial crisis, several major central banks implemented exceptional monetary policies, often referred to as "quantitative easing." These programs involved massive purchases of financial assets to increase the money supply and support the markets. These interventions illustrate the flexibility of the fiat monetary system. Monetary authorities can increase the money supply when economic conditions demand it. This adaptability is often presented as a significant advantage, as it allows for a rapid response to economic or financial crises.

However, this flexibility also raises important questions about the long-term stability of money. When the money supply increases continuously, the relative value of each unit of currency can decrease over time. This dynamic is closely linked to the phenomena of inflation and the loss of purchasing power observed in many economies. Bitcoin offers a radically different approach to this logic. In the Bitcoin protocol, money creation does not depend on institutional decisions or credit expansion. It follows a strict schedule encoded in the network's code. New bitcoins are created during the mining process, when miners validate new blocks of transactions.

The reward associated with each block is the mechanism by which new units enter circulation. But this money creation is limited and predictable. Approximately every four years, the reward given to miners is halved in an event called a halving. This mechanism gradually reduces the rate at which new bitcoins are created. Over time, the amount of newly issued currency decreases until it reaches the maximum limit set by the protocol: twenty-one million bitcoins. This fundamental difference profoundly distinguishes Bitcoin from the fiat monetary system. Where traditional currencies rely on a flexible money creation system linked to credit and economic policies, Bitcoin relies on a programmed money issuance independent of institutions.

This architecture introduces a form of monetary predictability rarely seen in the history of financial systems. Every participant in the network can know in advance the amount of bitcoins that will be created on a given date. Monetary policy is not decided by a central institution; it is defined by the rules of the protocol itself. Comparing these two models helps explain why Bitcoin is often presented as a radical alternative in monetary history. The fiat system relies on the active management of money creation to support the economy and stabilize markets. Bitcoin, on the other hand, offers a system where money creation is limited, transparent, and independent of political decisions. This contrast is one of the central elements of the debate surrounding the future of money in the digital economy.

3/ THE DEBT

Debt plays a central role in the functioning of modern economies. It is both an essential financing tool for governments, businesses, and individuals, and a mechanism closely linked to the monetary creation system. In the contemporary financial system, debt and money are deeply interconnected. When a bank grants a loan, new money is created in the economy. This process means that a large portion of the money in circulation actually corresponds to debts being repaid. In other words, a significant part of the money supply exists because economic agents—households, businesses, or governments—have borrowed money. This mechanism has become a structural component of the global economic system. Businesses borrow to invest, develop their operations, or finance their growth.

Households take out loans to purchase housing, finance their education, or support their consumption. Governments themselves use debt to finance public spending when their tax revenues are insufficient to cover their needs. In this context, debt plays a significant role in economic development. It allows for the mobilization of resources today to finance projects whose benefits are expected in the future. A mortgage, for example, allows a household to become a homeowner without waiting decades to accumulate the necessary savings. Similarly, businesses can invest in infrastructure, technology, or research using borrowed funds.

However, this dynamic also creates a structural dependence on debt. When economic growth slows or incomes decline, the burden of existing debt can become more difficult to bear. Repayments must continue, even when economic conditions deteriorate. At the national level, this situation is particularly evident. Public debt encompasses all the loans taken out by a government to finance its spending. These loans are generally issued in the form of bonds on the financial markets. Investors, financial institutions, investment funds, or sometimes central banks buy these bonds and thus lend money to governments.

Over time, many countries have accumulated very high levels of public debt. In some developed economies, public debt far exceeds the annual size of the national economy. This situation is not necessarily problematic in the short term if governments manage to refinance their debt and if interest rates remain relatively low. However, managing these debt levels presents an ongoing challenge for economic policy. When debt increases too rapidly or when interest rates rise, the cost of debt servicing that is, the interest payments on existing loans can represent a significant portion of the public budget. In these situations, governments generally have several options.

They can raise taxes, cut certain government spending, or try to stimulate economic growth to increase tax revenues. But in some cases, monetary policy can also play a role in debt management. When central banks keep interest rates low or inject liquidity into the financial system, they indirectly help facilitate the refinancing of public and private debt. These interventions can help stabilize financial markets and prevent large-scale solvency crises. However, this interaction between debt and monetary policy can also create long-term tensions. When the money supply increases to support the overall debt of the economy, the relative value of the currency can be affected.

Inflation can then play a role in adjusting these imbalances. In some cases, inflation allows for a gradual reduction in the real value of existing debts. If prices rise and nominal incomes follow the same trend, the real burden of debts incurred in the past can decrease. This mechanism is sometimes described as a form of implicit economic adjustment. However, this dynamic can also affect household savings and purchasing power. When the value of money decreases, holders of monetary savings may see the real value of their assets decline over time. Bitcoin introduces a different perspective on this relationship between money and debt. The Bitcoin protocol does not rely on a credit-linked monetary expansion system.

The creation of new bitcoins is not triggered by the granting of loans or by the financing needs of governments or financial institutions. Instead, currency issuance follows a predictable schedule embedded in the network's code. New bitcoins are created during the mining process, and their quantity gradually decreases over time until it reaches the maximum limit set by the protocol. This architecture means that Bitcoin is not inherently based on debt to exist or circulate. The currency is not created to finance loans or support economic policies. It is issued according to fixed rules enforced by the protocol itself. This difference profoundly alters the relationship between money and debt.

In a monetary system where supply is limited and predictable, economic dynamics can evolve differently. Saving, investment, and project financing must be organized without depending on permanent monetary expansion. This does not mean that debt disappears in an economic environment where Bitcoin plays a role. Loans, investments, and financing will always remain important elements of economic activity. But the way these mechanisms interact with money creation can be profoundly different. Comparing the fiat system and the Bitcoin protocol thus highlights two distinct economic architectures. In one, money and debt are closely linked and evolve together through the banking system and monetary policies.

In the other, the currency follows a programmed issuance independent of debt dynamics. This distinction is one of the key elements of the contemporary debate on the future of monetary systems. It raises fundamental questions about how economies can organize value creation, project financing, and long-term wealth management.

4/ CENTRAL BANKS

Central banks occupy a central position in the architecture of the modern monetary system. They are responsible for managing the monetary policy of a country or economic zone and play a crucial role in financial stability. Their mission generally involves maintaining price stability, supporting economic activity, and ensuring the smooth functioning of the banking system. In most contemporary economies, central banks have a range of tools at their disposal to influence economic developments. One of the most important is interest rate management. By adjusting the level of policy rates, they can encourage or discourage economic activity. When rates are low, credit becomes less expensive, which can stimulate investment and consumption.

Conversely, when interest rates rise, borrowing becomes more expensive and economic activity can slow. Central banks also play a central role in regulating the banking system. They supervise financial institutions, ensure the stability of the payment system, and sometimes act as lenders of last resort when certain institutions encounter difficulties. During financial crises, they can provide liquidity to banks to prevent a chain reaction of failures that could destabilize the entire economic system. Beyond these regulatory functions, central banks also have the power to increase the money supply. They can create money to purchase financial assets, support markets, or stabilize the banking system.

This capacity for intervention is often used in challenging economic contexts. Following the 2008 global financial crisis, many central banks implemented exceptional monetary policies to support the economy. These measures included quantitative easing, a policy of massively purchasing government bonds and other financial assets to inject liquidity into the financial system. These programs helped maintain very low interest rates for many years and support financial markets in a fragile economic environment. For some economists, this active role of central banks is essential to the functioning of modern economies. Financial markets and banking systems are complex and can be vulnerable to sudden crises.

In these situations, the swift intervention of a central monetary institution can stabilize the economy and prevent financial collapses. However, this monetary power also raises important questions. The decisions made by central banks can have profound consequences for the economy: they influence the value of money, the level of inflation, the cost of credit, and the evolution of financial markets. These decisions are generally made by a relatively small number of institutions and experts, which sometimes leads to debates about the concentration of monetary power. Moreover, monetary policies can produce unpredictable indirect effects. When the money supply increases sharply, financial markets may be stimulated, but the prices of certain assets can also rise rapidly.

In some cases, these dynamics can exacerbate wealth inequality or foster the formation of financial bubbles. Bitcoin offers a radically different approach to this monetary architecture. The Bitcoin protocol is independent of any central bank and relies on no institution capable of altering the system's monetary rules. Bitcoin's monetary policy is embedded directly in its code and automatically enforced by the network. Each node participating in the network verifies that the protocol's rules are being followed. If an attempt were made to alter the money supply or to produce more bitcoins than permitted, the other participants would immediately reject those blocks. This architecture means that no central authority can intervene to adjust the money supply.

In this model, money management no longer relies on institutional decisions but on programmed and transparent rules. All network participants can verify these rules and ensure that the protocol functions as intended. Trust no longer depends on a central institution but on the collective functioning of the network itself. Comparing the role of central banks in the fiat system with the functioning of the Bitcoin protocol highlights two different visions of monetary management. In the first case, money is administered by institutions tasked with stabilizing the economy and responding to crises. In the second, money operates according to a decentralized protocol with fixed rules that are applied automatically.

This difference constitutes one of the fundamental elements of the debate surrounding Bitcoin. It raises a central question: should the management of the currency remain in the hands of institutions capable of actively intervening in the economy, or can it be entrusted to a protocol whose rules are defined in advance and applied in a decentralized manner?

5/ MONETARY DILUTION

Monetary dilution is a direct consequence of the money creation mechanisms present in the fiat currency system. When new money is created and injected into the economy, the total quantity of monetary units increases. If this increase is faster than the growth in the production of goods and services, the relative value of each monetary unit can decrease. This phenomenon is often noticeable through inflation, that is, the general increase in prices in the economy. But monetary dilution can also manifest itself in more subtle ways. When the money supply gradually increases over time, the real value of monetary savings can decrease even if prices do not immediately rise dramatically.

In modern economic systems, this gradual dilution is often considered a normal characteristic of monetary functioning. Central banks generally aim for a moderate level of inflation to maintain a dynamic economy. Within this framework, money is conceived primarily as a medium of exchange rather than a long-term store of value. This logic profoundly influences how individuals manage their wealth. Holding money in monetary form for extended periods can lead to a gradual loss of purchasing power. This is why financial systems often encourage investment in various types of assets: stocks, bonds, real estate, or investment funds.

However, this dynamic can also alter economic incentives. When a currency gradually depreciates, individuals may be incentivized to consume or invest quickly rather than hold onto their savings in monetary form. This tendency can boost short-term economic activity, but it can also diminish the importance of saving in the economic system. Bitcoin introduces a radically different approach to this logic. In the Bitcoin protocol, the money supply is strictly limited. The total number of bitcoins that can exist is fixed at twenty-one million, and this limit is protected by network consensus. This feature means that the currency cannot be diluted by continuous money creation.

Participants in the network know that the total supply of bitcoins will remain limited, regardless of economic conditions or political decisions. This programmed scarcity transforms the relationship between money and savings. In a system where the money supply is fixed or highly predictable, currency can potentially retain its value over long periods. This property leads some observers to compare Bitcoin to a form of digital gold. Unlike precious metals, this scarcity does not depend on the discovery of new natural resources. It is defined by a transparent computer protocol that anyone can verify. The rules for creating money are public and applied automatically by the network. This fundamental difference profoundly distinguishes Bitcoin from the fiat system.

Where traditional currencies can be diluted by the expansion of the money supply, Bitcoin relies on a limited and predictable supply. Comparing these two models helps explain why Bitcoin is often presented as a radically different monetary alternative. The fiat system relies on active management of money by institutions capable of adjusting the money supply according to economic conditions. Bitcoin, on the other hand, offers a currency whose issuance is programmed and independent of political decisions. In this context, monetary dilution becomes a central element of the debate on the future of financial systems. It raises a fundamental question: should money be a flexible tool for economic management or a unit of value whose scarcity is guaranteed by immutable rules?

CONCLUSION

Comparing Bitcoin to the fiat monetary system is not simply about pitting a new technology against an existing economic system. It is primarily about contrasting two very different visions of money and its role in the economy. The fiat system that currently structures the global economy rests on a complex institutional architecture. Central banks, governments, and financial institutions play a central role in managing the money supply. This structure allows for considerable flexibility: monetary authorities can adjust the money supply, influence interest rates, and intervene in financial markets when the economy experiences periods of uncertainty. This capacity for intervention is one of the cornerstones of the modern economic system.

It allows institutions to respond to financial crises, support economic activity, and stabilize markets when imbalances arise. In a world characterized by business cycles, financial shocks, and rapid transformations, this flexibility is often considered an indispensable tool for economic governance. However, this monetary architecture also rests on a fundamental characteristic: money can be created in potentially unlimited quantities. Money creation, credit expansion, and monetary policies directly influence the value of money over time.

This dynamic can lead to a gradual dilution of monetary value and alter the relationship between saving, consumption, and investment. Bitcoin introduces a radically different logic into this monetary landscape. The protocol does not rely on any central institution capable of adjusting the money supply. The rules governing the system are written into the code and enforced collectively by a global network of computers. In Bitcoin, the total amount of currency is limited and known in advance. This programmed scarcity is one of the protocol's most distinctive features. It means that currency cannot be created to meet immediate economic needs or to support financial policies. The system operates according to fixed rules that are transparent and verifiable by all network participants.

This fundamental difference does not necessarily mean that one of these models should replace the other. Existing monetary systems will likely continue to play a central role in the global economy for many years to come. States, financial institutions, and markets will continue to use national currencies to organize economic activity. But the existence of Bitcoin introduces an alternative that did not previously exist in monetary history. For the first time, it is possible to use a form of digital currency whose issuance is independent of political decisions and financial institutions. This innovation is not merely a technological evolution. It opens a broader debate about the very nature of money, how it is created, and the role it should play in the global economy.

In a world where trust in financial institutions and monetary systems can sometimes be questioned, the existence of an open and transparent monetary protocol represents a significant transformation. Bitcoin is not simply a new form of digital currency. It offers a different economic experience, based on programmed scarcity, decentralization, and verifiability. History will tell whether this experiment will remain a marginal alternative or play a more significant role in the future evolution of the global monetary system. But one thing is already certain: the emergence of Bitcoin has profoundly transformed the way economists, technologists, and societies think about money. And for the first time in modern history, the idea of a currency independent of institutions no longer belongs solely to the realm of theory. It now exists in the form of a global network operating every day, block after block.