What is Bitcoin?


Bitcoin (BTC) is the world’s first decentralized cryptocurrency – a type of digital asset that uses public-key cryptography to record, sign and send transactions over the Bitcoin blockchain. Bitcoin was created in 2008 by an anonymous person or group using the alias Satoshi Nakamoto. Bitcoin has a limited supply of 21 million coins that can be divided into smaller units called satoshis. Bitcoin is also the name of the protocol that governs the network of nodes that validate and process Bitcoin transactions.

Bitcoin – Real time price

How does Bitcoin work?

Bitcoin works by using a peer-to-peer network of computers, called nodes, that validate and process transactions on a shared public ledger, called the blockchain. Each transaction is signed with a private key that proves its authenticity and prevents it from being altered. Transactions are broadcast to the network and need to be confirmed by other nodes through a process called mining. Mining involves solving complex mathematical puzzles that require a lot of computing power and electricity. The first node that solves the puzzle gets to add a new block of transactions to the blockchain and receive a reward in bitcoins. This reward is the only way to create new bitcoins and it decreases over time until the maximum supply of 21 million bitcoins is reached. The blockchain is a permanent and transparent record of all bitcoin transactions that ever happened. Anyone can download a copy of the blockchain and verify its integrity. The blockchain also ensures that no one can spend the same bitcoins twice or create counterfeit bitcoins.

Bitcoin advantages

  • Bitcoin is a decentralized and permissionless currency that does not depend on any central authority or intermediary. This makes it more resistant to censorship, corruption, and manipulation.
  • It is a store of value that can hedge against inflation and market volatility. Bitcoin has a limited supply of 21 million coins and a predictable issuance rate that reduces over time.
  • The cryptocurrency is a secure and transparent system that uses public-key cryptography and blockchain technology to ensure the authenticity and irreversibility of transactions. Anyone can verify the transactions and the state of the network.
  • Bitcoin is a global and inclusive currency that can be accessed by anyone with an internet connection and a digital wallet. Bitcoin can enable cross-border payments, financial inclusion, and innovation in the digital economy.

Bitcoin disadvantages

  • Bitcoin is volatile and speculative, meaning its price can fluctuate significantly and unpredictably based on supply and demand, market sentiment, news events, and regulatory actions. This can make it risky for investors and users who are not prepared for the price swings.
  • The cryptocurrency faces competition from other cryptocurrencies and digital assets that may offer faster, cheaper, or more scalable solutions for different use cases. Bitcoin may lose its dominance or relevance if it fails to adapt or innovate.
  • It has a low level of awareness and understanding among the general public and potential users. Many people are still unfamiliar with how Bitcoin works, how to use it safely, or why it has value. This can limit its adoption and acceptance.
  • Bitcoin has some technical and environmental challenges that need to be addressed. For example, Bitcoin transactions are limited by the block size and the network capacity, which can cause delays and high fees during periods of congestion. Moreover, Bitcoin mining consumes a lot of electricity and generates a large carbon footprint.

How to buy Bitcoin

There are different ways to buy Bitcoin, but one of the most common and convenient methods is to use a Bitcoin exchange. Here are the basic steps to follow:

  1. Choose a Bitcoin exchange that suits your needs and preferences. Some factors to consider are the fees, security, features, reputation, and customer support of the exchange. You can check out some of the best Bitcoin exchanges here.
  2. Create an account on the exchange and verify your identity if required. You may need to provide some personal information and documents to comply with the anti-money laundering (AML) and know-your-customer (KYC) regulations of the exchange.
  3. Deposit funds to your account using your preferred payment method. Some of the common options are credit card, debit card, bank transfer, PayPal, and other payment platforms. Note that different payment methods may have different fees and processing times.
  4. Search for Bitcoin or BTC on the exchange and click on the buy button. You can enter the amount of Bitcoin you want to buy in terms of fiat currency (e.g., USD) or Bitcoin units (e.g., 0.01 BTC). You can also use a market order or a limit order to specify the price you are willing to pay for Bitcoin.
  5. Confirm your order and check your balance. You should see the amount of Bitcoin you purchased in your exchange wallet. You can keep your Bitcoin on the exchange or transfer it to a private wallet that you control for more security and privacy.

What are some of the best Bitcoin exchanges?

There are many Bitcoin exchanges to choose from, and each one may have different features, fees, and supported cryptocurrencies. Therefore, it is important to do your own research and compare different options before choosing the best one for your needs. Here are some of the best Bitcoin exchanges according to various sources:


Binance is the world’s largest and most popular cryptocurrency exchange by trading volume. It offers low fees, high liquidity, and a wide range of supported coins and tokens. Binance also has advanced features such as margin and futures trading, as well as its own native token, BNB, that can be used to reduce trading fees. However, Binance is not available in some countries and regions due to regulatory restrictions.


Coinbase is one of the most user-friendly and beginner-friendly cryptocurrency exchanges in the market. It allows users to buy, sell, and store cryptocurrencies with a simple and intuitive interface. Coinbase also has a pro version, Coinbase Pro, that offers more trading options and lower fees. Coinbase supports fiat currencies such as USD, EUR, and GBP, and has a high level of security and trustworthiness. However, Coinbase may have higher fees than some other exchanges, and its customer support can be slow at times.


Kraken is one of the oldest and most reputable cryptocurrency exchanges in the industry. It offers a professional-grade trading platform with low fees, high security, and a variety of supported assets. Kraken also supports margin and futures trading, as well as over-the-counter (OTC) services for large-volume traders. Kraken is available in most countries and regions, except for some U.S. states where it is not licensed.


KuCoin is a fast-growing cryptocurrency exchange that aims to provide users with a convenient and secure platform to trade various digital assets. KuCoin has a large number of supported coins and tokens, especially altcoins and DeFi projects that are not listed on other exchanges. KuCoin also has its own native token, KCS, that can be used to access discounts and rewards. However, KuCoin may have lower liquidity than some other exchanges, and it was hacked in 2020, although it managed to recover most of the stolen funds.


Gemini is a U.S.-based cryptocurrency exchange that was founded by the Winklevoss twins, famous for their involvement in Facebook’s early days. Gemini is a regulated and compliant platform that adheres to high standards of security and transparency. Gemini supports fiat currencies such as USD, EUR, GBP, CAD, AUD, HKD, SGD, and JPY, and allows users to buy, sell, and store cryptocurrencies with ease. Gemini also has a mobile app that enables users to trade on the go. However, Gemini may have higher fees than some other exchanges, and its selection of supported coins and tokens is relatively limited.

Risks of using a Bitcoin exchange

Using Bitcoin exchanges can involve various risks, such as:

Hacking and theft

Bitcoin exchanges can be hacked by cybercriminals who can steal your bitcoins or your personal information. Even if you use a secure wallet to store your bitcoins, you may still lose them if the exchange gets hacked or goes bankrupt. You should always research the security and reputation of the exchange before using it, and avoid storing large amounts of bitcoins on any exchange.

Fraud and scams

Bitcoin exchanges can be fraudulent or scammy, and may not deliver what they promise. For example, some exchanges may offer fake or inflated prices, charge hidden fees, manipulate the market, or run away with your money. You should always check the reviews and ratings of the exchange before using it, and avoid any exchange that seems too good to be true.

Regulation and compliance

These exchanges can be subject to regulation and compliance issues in different countries and regions. Depending on where you live and where the exchange is based, you may face legal or tax consequences for using the exchange. For example, some countries may ban or restrict the use of cryptocurrencies, and some exchanges may require you to verify your identity and provide documents to comply with anti-money laundering (AML) and know-your-customer (KYC) regulations. You should always check the legal status and requirements of the exchange before using it, and follow the rules and regulations of your jurisdiction.

Volatility and liquidity

They can also be affected by the volatility and liquidity of the cryptocurrency market. The price of bitcoin can fluctuate significantly and unpredictably based on supply and demand, market sentiment, news events, and regulatory actions. This can make it risky for traders and investors who are not prepared for the price swings. Moreover, some exchanges may have low liquidity, meaning that there may not be enough buyers or sellers to execute your orders at your desired price or speed. This can result in slippage, delays, or partial fills. You should always check the trading volume and liquidity of the exchange before using it, and use limit orders to protect yourself from unfavorable price movements.


Bitcoin exchanges can be irreversible, meaning that once you send or receive bitcoins, you cannot undo or cancel the transaction. This can be problematic if you make a mistake, send bitcoins to the wrong address, fall victim to a scam, or change your mind. You should always double-check the details of your transaction before confirming it, and only deal with trusted parties.