{"id":2468,"date":"2022-04-07T17:00:00","date_gmt":"2022-04-07T17:00:00","guid":{"rendered":"https:\/\/xcoins.com\/blockchain-for-dummies-a-beginners-guide\/"},"modified":"2025-10-10T14:31:12","modified_gmt":"2025-10-10T14:31:12","slug":"blockchain-for-dummies-a-beginners-guide","status":"publish","type":"post","link":"https:\/\/xcoins.com\/en\/blog\/blockchain-for-dummies-a-beginners-guide\/","title":{"rendered":"Blockchain for Dummies: How Does it Work?"},"content":{"rendered":"\r\n

In this beginner\u2019s guide to blockchain, you\u2019ll learn everything you need to know about <\/span>blockchain technology<\/span><\/a> to start investing in cryptocurrencies.<\/span><\/p>\r\n

Before you invest hundreds, or even thousands, of dollars into intangible assets such as cryptocurrencies, it\u2019s vital to understand the technology behind them. Fortunately, while blockchain technology is complex, the concept is pretty straightforward.<\/span><\/p>\r\n

\r\n\r\n<\/p>\r\n

What is Blockchain?<\/b><\/h2>\r\n

Blockchain technology is essentially a way of recording information in a decentralized way, for example a shared list of transactions, without any centralised authority in control. Blockchains consist of many blocks of data that are systemised in chronological order, with the blocks linked together through the power of cryptography.\u00a0<\/span><\/p>\r\n

Blockchain in cryptocurrency<\/b><\/h2>\r\n

So what does it have to do with cryptocurrencies? Basically, a blockchain is a digital ledger, which can be thought of as just a very long logbook. In the case of cryptocurrencies, the ledger records transactions.\u00a0<\/span><\/p>\r\n

These crypto transactions are distributed and duplicated across the entire network of computer systems on the blockchain, recording new transactions as they happen on each block in the chain.<\/span><\/p>\r\n

How does Blockchain work?<\/b><\/h2>\r\n

When you buy bitcoin \u2014 let\u2019s call your bitcoin, \u201cbitcoin ABC\u201d \u2014 an entry is made on the Bitcoin blockchain to reflect the fact that you now own this specific bitcoin. That\u2019s ultimately all bitcoin is. Simply a digital entry in a distributed ledger.\u00a0\u00a0<\/span><\/p>\r\n

Every time the bitcoin changes hands, the transaction is recorded in this massive shared logbook. Every ten minutes a set of these recorded transactions is grouped into what\u2019s known as a \u201cblock\u201d and these blocks are linked in a chain through the power of encryption. Together they create a record going back to when the coin was first created.<\/span><\/p>\r\n

So if a bitcoin is an entry in a logbook, the blockchain is the digital equivalent of a physical logbook, recording every transaction electronically.<\/span><\/p>\r\n

\r\n\r\n\r\n\r\n<\/p>\r\n

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Disadvantages of blockchain<\/b><\/h2>\r\n

Most people when learning how blockchain works might start doubting its security and reliability. Let\u2019s talk about the blockchain\u2019s drawbacks first.<\/span><\/p>\r\n

Can Blockchain be hacked?<\/b><\/h3>\r\n

Could a hacker change the blockchain? Let\u2019s say a hacker named John hacks into Bitcoin and seizes control of Bitcoin ABC which was sold by Liz to Peter. John changes the sale entry in the Bitcoin ledger to read \u201cLiz owned this and sold it to John,\u201d\u00a0 instead of \u201cLiz sold this to Peter.\u201d This is called the \u201cdouble spender problem\u201d. This was a longstanding problem that prevented digital currency from existing without a centralized authority prior to the invention of Bitcoin.\u00a0<\/span><\/p>\r\n

An attack of this kind is unfeasible for Bitcoin because of the amount of computing power that would be needed to fool the network. However, this has happened to smaller blockchains that are more vulnerable to attack.\u00a0<\/span><\/p>\r\n

For example, an unofficial \u201c<\/span>fork<\/span><\/a>\u201d of Bitcoin known as \u201cBitcoin Gold\u201d was <\/span>hacked this way in 2018<\/span><\/a>. But fear not, <\/span>Bitcoin itself has never been hacked<\/span><\/a>, and here at Xcoins, we only list cryptocurrencies that are respected worldwide, to ensure our customers are protected from this type of risk.<\/span><\/p>\r\n

The double-spender problem is an issue because any currency \u2014cryptocurrency included\u2014only has value when it is scarce. Nothing has financial value if it exists in infinite amounts.\u00a0<\/span><\/p>\r\n

This is why governments fight so hard against counterfeiters. As long as only the Treasury controls the printing press, they can keep the dollar scarce and therefore spendable.<\/span><\/p>\r\n

Duplication problems<\/b><\/h3>\r\n

It is true that entire blockchains can be duplicated indefinitely.\u00a0<\/span><\/p>\r\n

There\u2019s nothing to stop our hacker John from copying the entire database over and over again and calling each new copy of the blockchain \u201cBitcoin Gold,\u201d \u201cBitcoin Silver,\u201d and so on.<\/span><\/p>\r\n

This does indeed happen, that\u2019s why there are tens of thousands of clones of Bitcoin and other cryptocurrencies. But unless our John can convince masses of people to start using their cloned blockchain their tokens remain worthless and Liz and Peter\u2019s tokens remain just as valuable.<\/span><\/p>\r\n

In fact, if someone were to clone the blockchain, or \u201cfork\u201d the chain, as it\u2019s known, Liz and Peter could even stand to gain. On August 1st 2017, Bitcoin was \u201c<\/span>forked<\/span><\/a>\u201d into two chains, with a competing chain that had lower fees and faster transactions called <\/span>Bitcoin Cash<\/span><\/a>. All Bitcoin users who held Bitcoin before the fork got to keep their original bitcoin, and they also got free Bitcoin Cash!\u00a0<\/span><\/p>\r\n

Advantages of Blockchain<\/b><\/h2>\r\n

There are many reasons why blockchain and all the activities that take place on it have been a success story. Let\u2019s take a look at the key reasons behind this.<\/span><\/p>\r\n

Blockchain nodes<\/b> & public access<\/b><\/h3>\r\n

Each blockchain is monitored by a <\/span>network of computers<\/span> called \u201cnodes.\u201d Whenever you buy a bitcoin, that transaction is broadcast to the entire system for verification.\u00a0<\/span><\/p>\r\n

The person selling the bitcoin provides a <\/span>private key<\/span><\/a> proving ownership and as long as that key matches the one on the blockchain, the network approves the transaction and records a new owner.<\/span><\/p>\r\n

The important thing is all of this happens in public.<\/span><\/p>\r\n

Every <\/span>node<\/span> on the network has a copy of the entire blockchain, which means that Liz\u2019s ownership is recorded on hundreds, or even thousands, of individual hard drives. All of those nodes check and confirm each other\u2019s work. If something goes wrong on one node, the rest of the network rejects the false information.<\/span><\/p>\r\n

So hack away. You might succeed in hacking one computer, but there are copies of the entire blockchain on thousands of other computers that must all be in agreement all of the time. The corrupted l<\/span>edger<\/span> will simply be corrected.<\/span><\/p>\r\n

Once again, think of the blockchain as a physical book. The blockchain works like a circle of accountants all sitting in one room watching each other. When one of them updates his ledger, every other accountant checks his work. If someone falsifies a record, every other accountant will catch the problem and correct it. It\u2019s not enough to distract the accountant and falsify one book \u2014 you somehow have to divert every single accountant and falsify every book at the same time.<\/span><\/p>\r\n

The blockchain is a public record of history. It tracks an asset back to the beginning and does so in full view. That\u2019s what makes it work.<\/b><\/p>\r\n

So, you <\/span>can\u2019t just copy a bitcoin<\/span><\/a> over and over again because the database tracks every bitcoin back to when it was first created. You could copy that database all you want, but it\u2019s still just a record of who currently owns Bitcoin at any given time.<\/span><\/p>\r\n

Nor can you just create a new Bitcoin \u201cDEF\u201d, because each blockchain tracks every token\u2019s existence back to when it was first created. So if a token appears to have sprung out of nowhere, the database will reflect that and you won\u2019t be able to spend it.<\/span><\/p>\r\n

\r\n\r\n<\/p>\r\n

Summary<\/span><\/h2>\r\n

For the first time in history, Bitcoin has made it possible that a currency can exist with no central authority in control. No one can ever alter the database and change it to say that you no longer own your Bitcoin.\u00a0<\/span><\/p>\r\n

This is because a decentralised global network comprising of thousands of computers has a copy of this database. If you hack one computer to change the database, every other node will compare that ledger against its copy and reject the change.<\/span><\/p>\r\n

That\u2019s what blockchain is. The system is an encrypted, digital database edited and updated in public view. That\u2019s what makes it work, and that\u2019s what you\u2019re buying into.<\/span><\/p>\r\n

The blockchain revolution is only just beginning<\/span><\/h2>\r\n

Bitcoin was the first technology to harness the power of blockchain, but it will certainly not be the last. Bitcoin revolutionised how the world thinks about currency but the potential of blockchain goes far beyond currency. For example, <\/span>Ethereum<\/span><\/a> is using the power of blockchain to allow people to write decentralized software and even run entire decentralized organizations on the blockchain!<\/span><\/p>\r\n

While blockchain and cryptocurrency are still technologies in their youth, blockchain has proven itself over recent years to be a truly revolutionary technology that is changing how the world is doing business. So go ahead and <\/span><\/i>sign up for free<\/span><\/i><\/a> to start buying bitcoins in a convenient and hassle-free way today!<\/span><\/i>\u00a0<\/p>\r\n

\r\n\r\n<\/p>\r\n

Frequently Asked Questions (FAQs)<\/h2>\r\n

\r\n\r\n<\/p>\r\n

\r\n
What is Blockchain?<\/strong><\/strong>\r\n

Blockchain is a way of recording data in a decentralised, censorship-resistant way with no central authority in control.<\/p>\r\n<\/div>\r\n

How does Blockchain technology work?<\/strong><\/strong>\r\n

Blockchain works by storing decentralized data in a string of \u201cblocks\u201d tied together through the power of cryptography, these blocks are distributed and duplicated across the entire network of computer systems on the blockchain, recording new transactions as they happen on each block in the chain.<\/p>\r\n<\/div>\r\n<\/div>\r\n

\r\n\r\n<\/p>\r\n

To stay up to date on all things crypto, like Xcoins on\u00a0<\/em>Facebook<\/em><\/a>, and follow us on\u00a0<\/em>Twitter<\/em><\/a>,\u00a0<\/em>Instagram<\/em><\/a>, and\u00a0<\/em>LinkedIn<\/em><\/a>.<\/em><\/p>\r\n

<\/p>\r\n

 <\/p>","protected":false},"excerpt":{"rendered":"

In this beginner\u2019s guide to blockchain, you\u2019ll learn everything you need to know about blockchain technology to start investing in […]<\/p>\n","protected":false},"author":17,"featured_media":1211,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[741],"tags":[],"class_list":["post-2468","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-academy-category"],"yoast_head":"\nBlockchain for Dummies: A Beginner\u2019s Guide I Xcoins<\/title>\n<meta name=\"description\" content=\"What is the blockchain and how does it work? Does it offer any disadvantages? 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