Bitcoin stands at the forefront of the digital age as a pioneering form of currency. Unlike traditional money, Bitcoin operates on principles that redefine financial transactions: Decentralization, Open Source, and Peer-to-Peer networking.
At its core, Bitcoin is devoid of physical form. It exists solely within a transparent, public ledger, granting open access to all its transactions and maintaining a high level of transparency. This decentralized nature means that Bitcoin operates independently, free from control or backing by any central banks or governments.
Our enthusiasm at Bitcoin.com for this revolutionary digital currency is boundless. We see Bitcoin as more than just a financial innovation; it's a potential catalyst for global change. Our mission is to demystify Bitcoin for you, making its complex ecosystem accessible and comprehensible. There's a wealth of knowledge to uncover, and we're here to guide you every step of the way in your journey through the world of Bitcoin.
The original Bitcoin code was designed by an individual or group using the name Satoshi Nakamoto, under MIT open source license. In 2008, Nakamoto outlined the idea behind Bitcoin in this white paper.
Bitcoin is the first successful digital currency built upon cryptography rather than reliance on central authorities. Satoshi left the Bitcoin code in the hands of developers and the community in 2010. Hundreds of developers have added to the open source code throughout the years.
Blockchain in the context of Bitcoin is a revolutionary technology that acts as a public ledger for all transactions within the network. The core concept of blockchain is its decentralized and distributed nature, meaning it isn't stored in a single location or controlled by a central authority. Instead, it's a chain of blocks, each containing a list of transactions, spread across a vast network of computers.
In Bitcoin's blockchain, every transaction made with Bitcoin is verified by a network of nodes (computers) and then chronologically added to a block. Once a block is filled with transactions, it's linked to the previous block, creating a chain. This process is secured through cryptography, ensuring that once a transaction is added to the blockchain, it becomes immutable and cannot be altered, effectively solving issues like fraud and double spending.
Bitcoin's blockchain is maintained by miners, who use powerful computers to solve complex mathematical problems, validating transactions and adding new blocks to the chain. As a reward for their efforts, miners are awarded Bitcoin, incentivizing a robust and secure network. The transparent, immutable, and decentralized nature of Bitcoin's blockchain makes it a groundbreaking technology, not just for cryptocurrency, but for various applications requiring secure, transparent record-keeping.
Double spending is a potential issue in digital currencies where the same digital token can be spent more than once. This is a unique problem for digital money, as digital information can be replicated easily. Bitcoin addresses this issue through its decentralized ledger, the blockchain. When a Bitcoin transaction is made, it's broadcast to a network of computers (nodes). These nodes verify the transaction's legitimacy and its history, ensuring the same bitcoins haven't been spent previously. Once verified, the transaction is added to a block in the blockchain, which is then confirmed by miners. This confirmation process, combined with the chronological ordering of transactions in the blockchain, prevents double spending by making it extremely difficult to alter the transaction history or to spend the same bitcoins again without the network noticing.
Bitcoin transcends the role of a mere digital currency, positioning itself as a powerful instrument for an unprecedented overhaul of our current financial landscape. Its capabilities extend far and wide, offering transformative changes in various facets of financial interactions:
In essence, Bitcoin's role as a digital currency is just the beginning. It heralds a new age of financial independence and global inclusivity, challenging and reshaping our traditional understanding of money and its flow. This transformative power of Bitcoin is what makes it a pivotal force in the journey towards a more equitable and accessible financial future.
Learn more in our essay Unstoppable Money: Cryptocurrency’s Original and Most Powerful Use Case.
Bitcoin mining is the process by which new bitcoins are entered into circulation and the network is secured. It involves solving complex computational puzzles using specialized hardware. Miners compete to solve these puzzles, and the first one to find a solution gets to add a new block of transactions to the blockchain, a decentralized public ledger. In return for their efforts, miners are rewarded with a certain number of bitcoins, as well as transaction fees paid by users. This mining process not only introduces new bitcoins at a controlled rate, adhering to Bitcoin's cap of 21 million total coins, but also plays a crucial role in maintaining and securing the Bitcoin network, making it resistant to fraud and attacks.
Bitcoins can be bought from various sources. For most people, the easiest way is through our self-custodial Bitcoin.com Wallet app where you can also buy, sell, and trade the most popular cryptocurrencies. You can also purchase Bitcoin online directly from our website. With both of the above methods, can pay via credit card, debit card, bank transfer with fiat currency, and using online payment services like Paypal.
Another option to buy Bitcoin is via Bitcoin Teller Machines which are similar to cash ATMs. Finally, it is of course possible to purchase Bitcoin peer-to-peer, whether in exchange for local currency, or as payment for goods or services.
For step-by-step instructions on buying Bitcoin, and to get more information such as the key factors to consider with each purchase method, please see this guide.
Bitcoin.com maintains a list of online exchanges and brokers who sell Bitcoins. Our aim is to provide the best quality services via our website, so anyone can easily obtain the cryptocurrency from a wide array of Bitcoin buying / selling platforms.
Yes, Bitcoins can be sold in various ways. For most people, the easiest way to sell Bitcoin is with Bitcoin.com Wallet app, where you can set up a connection to your local bank to sell Bitcoin for your local currency. Bitcoin can also be sold online via our website. Another option to sell Bitcoin is via Bitcoin Teller Machines which are similar to cash ATMs. Finally, it is of course possible to sell Bitcoin peer-to-peer, whether in exchange for local currency, or as payment for goods or services.
For step-by-step instructions on selling Bitcoin, and to get more information such as the key factors to consider with each selling method, please see this guide.
Bitcoin's reliability and integrity stem from its adherence to three core principles of technological freedom: decentralization, open-source code, and true peer-to-peer technology. Here's why these foundations make Bitcoin a trustworthy choice:
In conclusion, Bitcoin's trustworthiness is not just a product of its technological features; it's a result of a paradigm shift in how we understand and use money. By aligning with the principles of decentralization, open source, and peer-to-peer interactions, Bitcoin presents a compelling alternative to traditional financial systems, built on transparency, security, and user empowerment.
Bitcoin is often perceived as an anonymous digital currency, but it's more accurate to describe it as pseudonymous. Every Bitcoin transaction is recorded on a public ledger known as the blockchain. This ledger displays the transaction history of each Bitcoin address (which is a string of alphanumeric characters), rather than the personal identity of the users. While this means that individual transactions can't be directly linked to a person's identity just by looking at the blockchain, the anonymity can be compromised. If a Bitcoin address is ever linked to a person's identity, their past and future transactions made with that address can be traceable. Furthermore, many cryptocurrency exchanges require identity verification, creating potential links between identity and Bitcoin addresses. Therefore, while Bitcoin offers a higher degree of privacy compared to traditional banking systems, it's not entirely anonymous. Participants in Bitcoin transactions are identified by public addresses – long strings of around 30 characters you see in a person’s Bitcoin address. For every transaction, the sending and receiving addresses are publicly-viewable.
If you lose your Bitcoins, unfortunately, they are typically irrecoverable. This is because Bitcoin operates on a decentralized network without a central authority to oversee account management or recover lost funds. Your Bitcoins are accessed through private keys, which are essential for conducting transactions. If you lose your private keys or the wallet where they're stored without having a backup, your Bitcoins are essentially lost in the network. To prevent such situations, it’s crucial to back up your wallet and understand the best practices for digital asset security. Regularly backing up your wallet ensures that you can recover your funds if your device is lost, stolen, or damaged. For more information on how to backup and restore a crypto wallet, visit this guide. Additionally, familiarizing yourself with effective digital asset security measures can safeguard your investments against potential threats. Learn more about securing your digital assets here.
Nobody is "in charge" of Bitcoin – at least in the sense that Bitcoin is not a company or organization, has no governing body and no organizational structure. Bitcoin is simply a software protocol, like HTTP (aka the Internet) and SMTP (aka email).
This has been the case since Bitcoin’s creator, the person (or persons) calling themselves Satoshi Nakamoto, released their creation into the wild in 2009. There are, however, certain groups who can exert influence over the way Bitcoin functions through various means. Again, though, there are no individuals who can claim to speak for these groups, and they contain a plethora of opinions and incentives within. Examples of such groups are:
These are the people who write and maintain the software the Bitcoin network runs on. Although Satoshi Nakamoto released the first version of Bitcoin himself in 2009, the code has since been re-written and updated by subsequent programmers. The developers choose what updates to make to the protocol, and consider ways it can be improved.
These are the people (and companies) that own the machines that generate new Bitcoins and keep the network secure by validating transactions. As a result, they have the power to "vote" with their hardware and choose which Bitcoin software to support. Developers may create and release radical revisions to the Bitcoin protocol, but they'll have no effect unless the Bitcoin miners choose to adopt them.
That's you. At the end of the day, if regular users decide Bitcoin no longer fulfils their needs, then it will have no value.
Like the name suggests, a Bitcoin wallet is an application that stores, sends and receives bitcoins. You can think of it like you would a leather wallet full of physical cash, and basically that’s all you need to use Bitcoin.
The most common wallets are smartphone-based and use the device’s camera to scan QR codes to save the user from needing to copy/paste long Bitcoin addresses. Other people have desktop versions or use browser-based wallets. The interface is always similar to the end user, though the way they function and handle private keys (the ‘key’ which allow you to spend your Bitcoins) and user privacy can be very different.
Some apps have features that add value to your Bitcoin-using experience, like location-based Bitcoin business guides, links to exchanges to trade in and out of fiat currencies, more secure vault storage, or the ability to hold digital tokens other than just Bitcoin.
Apart from smartphone and desktop apps, you can also buy specialized hardware devices to keep your keys completely offline, or even print a wallet on paper to keep them as safe from hackers as possible. These are the best options for users holding large amounts of Bitcoin.
Bitcoin users now have a wide selection of wallets to choose from, and because of this competition, features have improved vastly over the past couple of years. But with more choice comes the need for more caution: fraudulent Bitcoin wallets have begun to appear that mimic the look of popular wallets, but are actually malware that steal Bitcoins. Be very careful the wallet you’re installing is the real one.
Use the Bitcoin.com Wallet app, trusted by millions to safely and easily send, receive, buy, sell, trade, and manage Bitcoin and the most popular cryptocurrencies.
Bitcoin's price is known for its significant fluctuations, primarily because it is still in the process of becoming a dominant currency for global payments. Currently, it is more prevalent among traders and price speculators, making its value highly sensitive to market forces of supply and demand. This sensitivity is often influenced by speculators' trends and reactions to news events, causing sudden and sharp price movements.
Generally, news that suggests Bitcoin is moving closer to widespread adoption will boost its price. Conversely, news indicating obstacles to its mass adoption can lead to a decrease in value. The factors influencing Bitcoin’s price can range from events within the Bitcoin ecosystem, like major hacks or technical developments, to broader economic and political developments. For instance, regulatory changes in major markets such as the EU, China, Japan, or the US can significantly impact the price.
Internal factors, such as miners' meetings to discuss protocol changes, also play a role. The price might dip if consensus on critical issues like block size or scaling is not reached. Moreover, global economic or financial news that questions the stability of traditional financial systems can lead to an increased interest in alternative assets like Bitcoin, thereby increasing its price.
Bitcoin's price can also experience erratic fluctuations without clear reasons, driven by factors like trader psychology, market dynamics, and technical triggers. This unpredictability is a significant concern for those who argue that Bitcoin cannot become a mainstream currency until its price stabilizes. However, it's also possible that a widespread shift towards Bitcoin in response to a crisis in traditional currencies could lead to a dramatic rise in its price, followed by stabilization.
As Bitcoin continues to evolve, those interested in its market movements can find it both fascinating and challenging to predict. While trading on these movements can be tempting, it requires caution due to Bitcoin’s inherent volatility and unpredictability.
Yes… and no. The days where anyone could make money mining Bitcoin with a desktop computer or GPU cards are unfortunately long gone. The total computing (or “hashing") power of the network has risen exponentially since the introduction of application-specific integrated circuits (ASICs), or machines designed specifically to solve Bitcoin’s mining proof-of-work algorithm and nothing else.
For a brief introduction to Bitcoin mining and some basic options, see Bitcoin.com’s guide here.
It is still possible for individual miners to make some money by purchasing their own ASIC-based equipment, however most mining takes place in large factory-like environments with hundreds of machines, in places where energy is cheap. And once your machine is superseded by a newer model a few months after purchase, its ability to compete on the network (and thus its earning potential) is greatly diminished, along with its resale value.
You also need to consider energy costs where you live. Bitcoin-mining ASIC machines run very hot and consume large amounts of electricity. You’ll need to subtract the costs of electricity and cooling from the profits you make.
However, if you have access to cheap electricity, don’t mind (a lot of) extra heat and you think the Bitcoin price is going to increase exponentially in future, try mining for yourself. You’ll learn a lot about how the Bitcoin network works, and the network needs more individual miners to keep it secure and decentralized.
In fact, a large number of individuals mine Bitcoin to contribute back to the network in this way, as well as just for the fun of it. There’s also always the possibility, though increasingly remote, that an individual miner will mine the next block and receive the full reward for doing so.
If you still want to mine and don’t want to own or manage your own devices, various “cloud mining" companies exist. These are large operations located in data centers around the world. Users buy a share of the mining power available and receive rewards in proportion to their shares. Like all Bitcoin services, there are trustworthy and untrustworthy operators, and cloud mining is subject to the same risks and price fluctuations as managing your own equipment – so be sure to do your research and ask questions before parting with any money.
You can purchase just about anything with Bitcoins, from goods like clothing, electronics, food and art to handmade crafts. Bitcoin can also be used to purchase large items like cars, real estate, and investment vehicles such as precious metals.
A Bitcoin address is a long string of 27 - 34 numbers and letters that acts similarly to an email address. The address enables the Bitcoin blockchain to recognize when Bitcoins are sent and received. These addresses can be used by anybody, from single individuals to businesses, to multiple people accessing the one address if desired.
It is also considered more secure not to re-use addresses, but instead to use a unique address every time you send and receive Bitcoins. This increases the privacy of your transactions to a degree and helps in avoiding public tracking of your funds.
Bitcoin transactions are a seamless yet intricate process, involving a few key components: the transaction amount, input (sending address), output (receiving address), and private keys. These elements work together to ensure the secure transfer of Bitcoin between parties.
Here’s a breakdown of how it works:
Through this process, Bitcoin transactions maintain a high level of security and reliability. The blockchain's role as a public ledger not only provides transparency but also a traceable history of all transactions, which is fundamental to Bitcoin's integrity. To explore Bitcoin transactions and other data points, many resources are available, including the Bitcoin Explorer.
In the realm of Bitcoin, each address comprises two crucial components: a public key and a private key. The public key plays a vital role in the Bitcoin ecosystem, serving multiple purposes.
Furthermore, the private key can be used to sign a message, proving ownership of the Bitcoins at a particular address. This entire system is underpinned by asymmetric cryptography, a branch of mathematics that ensures the robust security of these keys. In this way, public and private keys work together to provide both accessibility and security in the Bitcoin network.
It is very easy for any merchant to accept Bitcoin. Merchants can accept Bitcoin both online and at physical locations by using a merchant service payment provider like Bitpay, or even just using a simple wallet address generated on their own device.
Merchants can accept Bitcoin through a payment processor, through a Point-Of-Sale (POS) device or simply using their own tablet or smartphone. Adding Bitcoin as a payment method for your store can also increase your customer base for those who like to pay with cryptocurrency, as well as broadening your company’s reach into the global market. Read more about our merchant solutions for more information.
Yes, sending Bitcoin does involve certain fees, commonly referred to as the 'Miner's fee.' These fees serve as an incentive for miners, who play a critical role in the Bitcoin network. When you send Bitcoin, a portion of the transaction is allocated as a fee to these miners.
In the context of Bitcoin, an "unconfirmed transaction" refers to a transaction that has been initiated and broadcast to the network but has not yet been validated and confirmed by miners. Here's what you need to know about unconfirmed transactions:
Bitcoin is legal in most jurisdictions in the world but there are a small number nation states that have banned its use, such as Ecuador. Wikipedia has a great guide on how Bitcoin is treated in all the countries around the world and explains regulatory policies surrounding it. Regulations vary from one border to the next so you should always research your location’s laws before participating in the network.
Satoshi Nakamoto is the pseudonym or name of a person or group who created the original Bitcoin client and author of the original reference white paper which details the protocol. Nakamoto participated in the network by helping with the code and mining until 2010 when they disappeared, never to be heard from again.
Paper wallets are a great way to keep Bitcoin offline and out of hackers’ reach. Creating paper wallets is easy but losing the paper also means the Bitcoins are lost forever so be careful. Paper wallets contain both private and public keys which allow you to spend your Bitcoins.
The most common way that people create paper wallets is using paperwallet.bitcoin.com where users can generate a fresh new Bitcoin address and related private key. The website will ask the person to initiate some steps and are then given both public and private keys after the process. After printing a copy, you can load as much Bitcoin as you want into your public QR-code.
This service, however, does come with a caveat. There are any number of technical reasons why generating a private key on a machine that you don’t control is a bad idea; these range from man-in-the-middle (MITM) attacks to untrustworthy site operators, and everything in between.
However, downloading the Bitaddress code and running it on your own machine offline can mitigate these risks. This can be further secured by doing so on a machine that is not (and has never been) connected to the internet.
The blockchain records all of the newly minted Bitcoins rewarded to miners who find blocks. Blocks are sets of sent/received transactions that miners confirm for the network. As these actions take place within the Bitcoin protocol, the blockchain acts as a ledger of account for all transactions undertaken within the Bitcoin network.
A full node in the Bitcoin ecosystem is a fundamental component that plays a crucial role in validating and relaying transactions across the network. These nodes are voluntarily operated by a diverse array of participants, including individuals, groups, and organizations such as merchants. They contribute significantly to the health and security of the Bitcoin network. Here’s what sets full nodes apart:
In essence, full nodes are the guardians of Bitcoin's ledger, ensuring that the rules of the network are followed and that transactions are processed correctly. Their operation, while altruistic, is a cornerstone in the stability and trust of the Bitcoin network.
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