Understanding Bitcoin: Basics, Features, and How It Works

To clear up some confusion surrounding Bitcoin, we need to split Bitcoin into two parts. On one hand, you have a Bitcoin, a code snippet representing digital ownership—somewhat like a virtual IOU. On the other hand, you have the Bitcoin protocol, a distributed network that maintains a balanced ledger of Bitcoin. Both are called “Bitcoin.”

The system allows users to send payments without a central authority (such as a bank or payment gateway). It is created and held electronically. Bitcoin is not printed like dollars or euros; instead, it is produced by free software running on computers worldwide.

This is the first example of what we now call “cryptocurrency.” Cryptocurrency is a growing asset class that shares some characteristics with traditional money and is validated using cryptography.

Who created it?

In 2008, an anonymous software developer using the pseudonym Satoshi Nakamoto proposed Bitcoin as a mathematically provable electronic payment system. The idea was to create a means of exchange independent of any central authority, capable of being transferred electronically in a secure, verifiable, and immutable way.

To this day, no one knows who Satoshi Nakamoto really is.

How does it differ from traditional money?

If both parties agree, Bitcoin can be paid electronically. In this sense, it is similar to traditional dollars, euros, or yen, which also use digital technology for transactions.

However, it differs from fiat digital currencies in several important ways:

1 - Decentralization

The most important feature of Bitcoin is decentralization. No single institution controls the Bitcoin network. It is maintained by a group of volunteer developers and runs on an open network of dedicated computers worldwide. This appeals to individuals and groups uneasy about banks or governments controlling their funds.

Bitcoin solves the double‑spending problem of electronic money (where digital assets can be easily copied and reused) through a clever combination of cryptography and economic incentives. In electronic fiat money, this function is performed by banks, which can control the traditional system. With Bitcoin, transaction integrity is maintained by a distributed, open network that is not owned by anyone.

2 - Limited Supply

Fiat currencies (dollars, euros, yen, etc.) have an unlimited supply—central banks can issue as much as they wish and attempt to manipulate the currency’s value relative to others. Currency holders (especially citizens without alternatives) bear the costs.

In contrast, Bitcoin’s supply is strictly controlled by its underlying algorithm. A small amount of new bitcoins are released each hour, and the rate continues to decrease until the maximum cap of 21 million is reached. This makes Bitcoin more attractive as an asset—if demand rises while supply remains fixed, its value should increase.

3 - Pseudonymity

While senders in traditional electronic payments are usually identified (for verification and AML compliance), Bitcoin users are theoretically pseudonymous. Because there is no central “validator,” users do not need to identify themselves when sending Bitcoin to others. When a transaction request is submitted, the protocol checks all previous transactions to confirm the sender has the necessary bitcoins and the authority to spend them. The system does not need to know their identity.

In practice, each user can be identified by their wallet address. With some effort, transactions can be traced. Moreover, law enforcement has developed methods to identify users when necessary.

Additionally, regulations require most exchanges to perform identity checks on customers before allowing Bitcoin trading, facilitating another way to trace Bitcoin usage. Because the network is transparent, the progress of specific transactions is visible to everyone.

This makes Bitcoin less ideal for criminals, terrorists, or money launderers.

4 - Immutability

Unlike electronic transactions, Bitcoin transactions cannot be reversed.

This is because there is no central “judge” who can say “okay, return the money.” Once a transaction is recorded on the network and more than an hour has passed, it cannot be altered.

Although this may unsettle some, it indeed means that any transaction on the Bitcoin network cannot be tampered with.

5 - Divisibility

The smallest unit of Bitcoin is a satoshi, which is one hundred millionth of a Bitcoin (0.00000001). At today’s price, it is roughly one ten‑thousandth of a cent, enabling transactions of amounts that traditional electronic money cannot handle.