What Is Bitcoin?

Bitcoin (BTC) is a cryptocurrency (a virtual currency) designed to act as money and a form of payment outside the control of any one person, group, or entity. This removes the need for trusted third-party involvement (e.g., a mint or bank) in financial transactions.

Key Takeaways

Encryption

Bitcoin uses the SHA-256 hashing algorithm to encrypt (hash) the data stored in the blocks on the blockchain. Simply put, transaction data stored in a block is encrypted into a 256-bit (64-digit) hexadecimal number. That number contains all the transaction data and information linked to the blocks before that block.

While the data in a block is encrypted and used in the next block, the block is not inaccessible or non-readable. The hash is used in the next block, then its hash is used in the next, and so on, but all blocks can be read. This makes it so blocks cannot be changed without changing all other blocks and ensures anyone can audit the blockchain.

How To Buy Bitcoin

If you don’t want to mine bitcoin, you can buy it using a cryptocurrency exchange. Most people will be unable to purchase an entire BTC because of its price, but you can buy portions of one BTC on these exchanges in fiat currency, such as U.S. dollars.

How To Mine Bitcoin

A variety of hardware and software can be used to mine bitcoin. When the Bitcoin blockchain was first released, it was possible to mine it competitively on a personal computer. However, as it became more popular, more miners joined the network, which lowered the chances of being the one to solve the hash.

Options for Successful Mining

There are two hardware options available for Bitcoin mining and several software options.

1. You can use your existing computer and mining software compatible with Bitcoin software and join a mining pool. Mining pools are groups of miners that combine their computational power to compete with large ASIC mining farms.

2. If you have the financial means, you could purchase an ASIC miner. You can generally find a new one for around $10,000, but used ones are also sold by miners as they upgrade their systems. There are some significant costs, such as electricity and cooling, to consider if you purchase one or more ASICs. Keep in mind using one or two ASICs is still no guarantee of rewards as you’re competing with businesses with large mining farms of tens, if not hundreds, of thousands of ASICs. For example, bitcoin mining firm CleanSpark ordered 100,000 ASICs from Bitmain in April 2024.

How To Use Bitcoin

Bitcoin was initially designed and released as a peer-to-peer payment method. However, its use cases are growing due to its increasing value, competition from other blockchains and cryptocurrencies, and developments on blockchains that process information for the Bitcoin blockchain.

Risks of Investing in Bitcoin

Bitcoin had a price of $7,167.52 on Dec. 31, 2019, and a year later, it had appreciated more than 300% to $28,984.98. It continued to surge in the first half of 2021, trading at a record high of $69,000 in November 2021. It then fell over the next few months to hover around $40,000.

Here are some of the risks that you’re exposed to when trading or investing in bitcoin:

• Regulatory risk: The continuous battle between cryptocurrency-related projects and regulators makes longevity and liquidity an unknown. As of May 2024, bitcoin is not considered a security by the authorities, but that stance could change in the future.
• Security risk: Most individuals who own and use bitcoin have not acquired their tokens through mining operations. Rather, they buy and sell bitcoin and other digital currencies on popular cryptocurrency exchanges. These exchanges are entirely digital and are at risk from hackers, malware, and operational glitches.
• Fraud risk: Even with the security measures inherent within a blockchain, there are still opportunities for fraudulent activity.
• Market risk: As with any investment, bitcoin values can fluctuate. Indeed, the currency’s value has seen wild price swings over its short existence. Subject to high volume buying and selling on exchanges, it is highly sensitive to any newsworthy events.