Bitcoin is a decentralized digital money that is not regulated or supervised by banks or governments. Software and end-to-end encryption are used instead.
All bitcoin transactions are recorded in a public ledger, and copies are preserved on servers all over the world. A node is a server that can be set up by anyone with a spare computer. Rather than relying on a central trusted source like a bank, these nodes use cryptography to reach consensus on who owns particular currencies.
Each transaction is broadcast to the entire network and distributed from node to node. These transactions are collected by miners in a group known as a block and permanently appended to the blockchain every ten minutes or so. This is the most comprehensive bitcoin ledger.
Just like you would keep traditional coins in a physical wallet, virtual coins are kept in digital wallets and can be accessed from client software or a variety of online and hardware tools.
Currently, bitcoins can be subdivided into seven decimal places: one thousandth of bitcoin is called milli and one hundred millionth of bitcoin is called satoshi.
In fact, there is no bitcoin or wallet, just an agreement between the network on the ownership of a currency. A private key is used to prove ownership of funds to the network during a transaction. A person can simply memorize their private key and not need anything else to retrieve or spend their virtual money, a concept known as a «brain wallet».
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Can Bitcoin be converted into cash?
Bitcoin can be exchanged for cash like any asset. There are many online cryptocurrency exchanges where people can do this, but transactions can also be done in person or through any communication platform, allowing even small businesses to accept bitcoin. There is no official mechanism built into bitcoin to convert to another currency.
The bitcoin network is supported by nothing fundamentally valuable. However, since exiting the gold standard, many of the world’s most stable national currencies, such as the US dollar and the British pound, have become more stable.
What exactly is bitcoin’s purpose?
Bitcoin was established to make it possible for people to send money via the internet. The digital currency was designed to be a non-centralized alternative payment system that could be used in the same way that traditional currencies are.
Is bitcoin a safe investment?
Bitcoin’s encryption is based on the SHA-256 algorithm developed by the National Security Agency of the United States. For all intents and purposes, cracking this is impossible because there are more possible private keys to test (2256) than there are possible private keys.
Although there have been multiple high-profile incidents of bitcoin exchanges being hacked and cash being stolen, these businesses have always stored digital currency on behalf of consumers. The website, not the bitcoin network, was hacked in these situations.
In principle, an attacker might generate a consensus that they held all bitcoins and incorporate them into the blockchain if they controlled more than half of all bitcoin nodes. It becomes less convenient as the number of nodes grows.
The fact that bitcoin functions without a central authority is a significant issue. As a result, anyone who makes a mistake with their wallet transaction has no redress. There’s nothing you can do if you give bitcoins to the incorrect person or forget your password.
Of course, the eventual arrival of practical quantum computing could break everything. Much of cryptography relies on mathematical calculations which are extremely difficult for today’s computers, but quantum computers work very differently and can perform them in a fraction of a second.
What are the drawbacks to using bitcoin?
Several objections have been leveled regarding Bitcoin, notably the fact that the mining method is incredibly energy-intensive. The University of Cambridge has an online calculator that measures energy use, and it was projected that it was using over 100 terawatt hours per year as of early 2021. In 2016, the United Kingdom consumed 304 terawatt hours.
Critics have linked cryptocurrency to crime, claiming that it is an excellent way to transact on the illicit market. Indeed, money has served this purpose for ages, and the public bitcoin ledger might serve as a law enforcement instrument.