What is Bitcoin? Bitcoin Explained in 2022


What Is Bitcoin?

Bitcoin is a decentralized digital money that was first introduced in January of 2009. It is based on concepts presented in a white paper by Satoshi Nakamoto, a mysterious and pseudonymous figure. The identity of the individual or people behind the technology is still unknown. Bitcoin promises reduced transaction costs than existing online payment methods, and it is run by a decentralized authority, unlike government-issued currencies.

Bitcoin is classified as a cryptocurrency since it is protected by encryption. There are no real bitcoins; instead, balances are recorded on a public ledger that everyone can see (although each record is encrypted). A large amount of computational power is needed to verify all Bitcoin transactions, a process known as “mining.” Bitcoin is neither issued or backed by any banks or governments, and a single bitcoin has no monetary value. Despite the fact that Bitcoin is not legal cash in most areas of the globe, it is very popular and has sparked the creation of hundreds of rival cryptocurrencies known as altcoins. When Bitcoin is exchanged, it is typically abbreviated as BTC.

Getting to Know Bitcoin

The Bitcoin system consists on a network of computers (also known as “nodes” or “miners”) that execute Bitcoin’s code and store its blockchain. A blockchain may be conceived of as a collection of blocks in metaphorical terms. Each block contains a set of transactions. No one can trick the system since all computers running the blockchain have the same list of blocks and transactions and can observe these new blocks as they’re filled with fresh Bitcoin transactions in real time.

These transactions may be seen in real time by anybody, whether or not they operate a Bitcoin “node.” To carry out a criminal deed, a bad actor would need to control 51 percent of Bitcoin’s computational power. As of mid-November 2021, Bitcoin has roughly 13,768 complete nodes, and this number is rising, making such an assault very implausible.

Bitcoins by andreastrojak

However, if an assault were to occur, Bitcoin miners—those who participate in the Bitcoin network via their computers—would most likely splinter off to a different blockchain, rendering the bad actor’s attempt futile.

Public and private “keys,” which are lengthy sequences of numbers and characters connected by the mathematical encryption method that produces them, are used to keep track of Bitcoin token balances. The public key (which is similar to a bank account number) is the address that is made public and to which others may transfer Bitcoin.

The private key (which functions similarly to an ATM PIN) is designed to be kept private and is only used to approve Bitcoin transactions. A Bitcoin wallet, which is a physical or digital device that supports Bitcoin trade and allows users to monitor ownership of coins, should not be confused with Bitcoin keys. The name “wallet” is a misnomer since Bitcoin is never held “in” a wallet, but rather distributed on a blockchain due to its decentralized nature.

Peer-to-Peer (P2P) technology

Bitcoin was one of the first digital currencies to make use of peer-to-peer (P2P) technology to allow for immediate transactions. Bitcoin “miners,” who possess the controlling computer power and participate in the Bitcoin network, are responsible for processing transactions on the blockchain and are motivated by incentives (the production of new Bitcoin) and transaction fees paid in Bitcoin.

These miners may be thought of as a decentralized authority that ensures the Bitcoin network’s integrity. Miners get new bitcoins at a set, though periodically decreasing, pace. There are only 21 million bitcoins available for mining. There are about 18.875 million Bitcoin in circulation as of November 2021, with just 2.125 million remaining to mine.

Under this approach, Bitcoin and other cryptocurrencies vary from fiat money; in centralized banking systems, currency is issued at a pace that corresponds to the economy’s development, with the goal of maintaining price stability. A decentralized system, like as Bitcoin, determines the pace of release in advance and according to a formula.

Cryptocurrency mining

Crypto Mining
Credits: AntMiner

The process of releasing Bitcoin into circulation is known as bitcoin mining. In general, mining entails solving computationally challenging riddles in order to find a new block, which is then added to the blockchain.

Bitcoin mining is the process of adding and verifying transaction records throughout the Bitcoin network. Miners get Bitcoin as a reward, which is halved every 210,000 blocks. In 2009, the block reward was 50 new bitcoins. The third halving took place on May 11, 2020, lowering the reward for each block discovery to 6.25 bitcoins.

Investing in Bitcoin Comes With Risks
After Bitcoin’s meteoric price rise in recent years, it has attracted speculative investors. Bitcoin was worth $7,167.52 on December 31, 2019, and had increased by more than 300 percent to $28,984.98 a year later. In the first part of 2021, it continued to rise, reaching a new high of almost $68,000 in November.

As a result, many individuals buy Bitcoin for its financial potential rather than its use as a means of commerce. However, because of the absence of a fixed value and the fact that it is digital, its acquisition and usage come with a number of hazards. The Securities and Exchange Commission (SEC), the Financial Industry Regulatory Authority (FINRA), the Consumer Financial Protection Bureau (CFPB), and other authorities have issued several investor advisories.

The notion of a virtual currency is still unique, and Bitcoin, in comparison to conventional assets, lacks a long-term track record or history of trustworthiness to back it up. Bitcoin is getting less experimental every day as its popularity grows; but, after barely a decade, all digital currencies are still under development. “It’s about the highest-risk, highest-return investment you can make,” says Barry Silbert, CEO of Digital Currency Group, which develops and invests in Bitcoin and blockchain businesses.

Risk of imposing regulations

Investing in any of Bitcoin’s numerous forms is not for the faint of heart. Bitcoin is a cryptocurrency that competes with government-issued money and may be used for black market transactions, money laundering, illicit activities, and tax avoidance. As a consequence, governments may attempt to regulate, limit, or prohibit Bitcoin usage and sale (and some already have). Others have devised a variety of regulations.

The New York State Department of Financial Services, for example, adopted laws in 2015 that required enterprises dealing with the purchase, sale, transfer, or storage of Bitcoin to keep track of clients’ identities, hire a compliance officer, and have capital reserves. Any transaction with a value of $10,000 or more must be documented and disclosed.

The absence of standardized laws around Bitcoin (and other virtual currencies) raises concerns about its long-term viability, liquidity, and universality.

Bitcoin may be mined using a variety of machines. Some, on the other hand, pay off more than others. More powerful processing devices, such as graphic processing units (GPUs), and certain computer chips, termed application-specific integrated circuits (ASICs), may gain higher prizes. “Mining rigs” are the names given to these complex mining machines.

The smallest unit of bitcoin is called a Satoshi, and it is divisible to eight decimal places (100 millionths of a bitcoin).

6 Bitcoin might someday be made divisible to even more decimal places if required and if the participating miners approve the change.


Threats on security from hackers

The majority of people who own and use Bitcoin did not get their coins via mining operations. Instead, people purchase and trade Bitcoin and other digital currencies on one of the many popular online marketplaces known as Bitcoin or cryptocurrency exchanges.

Bitcoin exchanges are fully digital and, like any other virtual system, are vulnerable to hackers, viruses, and system failures. A criminal might move stolen Bitcoin to another account if they obtain access to a Bitcoin owner’s computer hard disk and acquire their private encryption key. (Users may avoid this by storing their Bitcoin on a computer that is not connected to the internet, or by using a paper wallet, which involves printing out the Bitcoin private keys and addresses and not storing them on a computer at all.)

Bitcoin Hack
Quantum computing could break the blockchains behind cryptocurrencies. Image: Getty

Hackers may also attack Bitcoin exchanges, obtaining access to tens of thousands of accounts and digital wallets containing Bitcoin. Mt. Gox, a Bitcoin exchange in Japan, was forced to suspend operations after millions of dollars worth of Bitcoin were stolen in a hacking event in 2014.

Given that all Bitcoin transactions are permanent and irrevocable, this is extremely troublesome. It’s the same as dealing with cash: any Bitcoin transaction can only be reversed if the person who received the money returns them. There is no third party or payment processor, as there is with a debit or credit card, therefore there is no way to get help or appeal if anything goes wrong.

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