{"id":2951,"date":"2023-08-01T21:53:16","date_gmt":"2023-08-01T13:53:16","guid":{"rendered":"https:\/\/100lifestyle.com\/?p=2951"},"modified":"2023-08-27T14:23:57","modified_gmt":"2023-08-27T06:23:57","slug":"blockchain","status":"publish","type":"post","link":"https:\/\/100lifestyle.com\/en\/blockchain\/","title":{"rendered":"[Blockchain Lazy Bag] What exactly is blockchain? 5 minutes to understand the principles of blockchain technology that ordinary people do not understand"},"content":{"rendered":"<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">In this article, I will try to simplify and unveil the mystery of this blockchain. The technical connotations of blockchain and cryptocurrency are no longer just the patent of technical experts, but knowledge that every reader can understand and master. It also talks about the practical applications and future prospects of blockchain, and also introduces the application scenarios of blockchain. After reading this, you will be more interested in blockchain.<\/mark><\/strong><\/p>\n<\/blockquote>\n\n\n\n<p><a href=\"https:\/\/100lifestyle.com\/en\/2023\/08\/01\/blockchain\/\" target=\"_blank\" rel=\"noreferrer noopener\">what is blockchain<\/a>? The booming development in the digital age has given rise to many cutting-edge technologies, the most influential of which are blockchain and cryptocurrency. From the birth of Bitcoin to the rise of various cryptocurrencies such as Ethereum, this new trend has clearly quietly changed our world. However, for many people, blockchain and cryptocurrencies are still an unsolved mystery. After all, how they work is not easy to understand.<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>First, we&#039;ll explore the basic concepts of blockchain, understanding how it acts as a decentralized, immutable database to provide security and transparency. Then, we&#039;ll take a closer look at how cryptocurrencies work, revealing how they use complex cryptography to protect users&#039; assets and transaction information. Let&#039;s uncover the mystery of blockchain and cryptocurrency together, and start a new journey of knowledge! !<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Further reading:<\/p>\n\n\n\n<p>1.&nbsp;<a href=\"https:\/\/100lifestyle.com\/en\/web3\/\" target=\"_blank\" rel=\"noreferrer noopener\">What is Web 3.0 in everyone&#039;s mouth? How Blockchain and Decentralization Could Revolutionize the Internet in 2023<\/a><\/p>\n\n\n\n<p>2.<a href=\"https:\/\/100lifestyle.com\/en\/blockchain-application\/\" target=\"_blank\" rel=\"noreferrer noopener\">[Blockchain application lazy bag] I am not afraid that AI will make most human beings unemployed, and the blockchain will bring more new job opportunities within 10 years<\/a><\/p>\n\n\n\n<p>3.&nbsp;<a href=\"https:\/\/100lifestyle.com\/en\/yield-farming\/\" target=\"_blank\" rel=\"noreferrer noopener\">What is Defi Liquidity Mining? Will blockchain Defi replace the role of banks in 10 years?<\/a><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Chapters of this Article (In this article you can learn)<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/100lifestyle.com\/en\/blockchain\/#%E4%B8%80%E3%80%81%E5%8D%80%E5%A1%8A%E9%8F%88%E6%98%AF%E4%BB%80%E9%BA%BC%EF%BC%9F\" >1. What is blockchain?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/100lifestyle.com\/en\/blockchain\/#%E6%8E%A8%E8%96%A6%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9B%B8%E9%97%9C%E6%9B%B8%E7%B1%8D%EF%BC%9A%E5%8D%80%E5%A1%8A%E9%8F%88_%E6%94%B9%E8%AE%8A%E6%9C%AA%E4%BE%86%E7%9A%84%E5%80%92%E6%95%B8%E8%A8%88%E6%99%82\" >Recommended books related to blockchain: Countdown to how blockchain will change the future<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/100lifestyle.com\/en\/blockchain\/#%E4%BA%8C%E3%80%81%E5%8A%A0%E5%AF%86%E8%B2%A8%E5%B9%A3%E5%A6%82%E4%BD%95%E5%8A%A0%E5%AF%86%EF%BC%9F%E8%99%9B%E6%93%AC%E8%B2%A8%E5%B9%A3%E8%88%87%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9A%84%E7%9B%B8%E9%97%9C%E6%87%89%E7%94%A8\" >2. How to encrypt cryptocurrency? Related applications of virtual currency and blockchain<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/100lifestyle.com\/en\/blockchain\/#%E4%B8%89%E3%80%81%E5%85%AC%E9%91%B0%E3%80%81%E7%A7%81%E9%91%B0%E6%98%AF%E4%BB%80%E9%BA%BC%EF%BC%9F%E5%AF%86%E7%A2%BC%E5%AD%B8%E8%88%87%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9A%84%E9%97%9C%E4%BF%82\" >3. What are public keys and private keys? The relationship between cryptography and blockchain<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/100lifestyle.com\/en\/blockchain\/#%E5%9B%9B%E3%80%81%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9A%84%E5%85%AD%E5%B1%A4%E7%B5%90%E6%A7%8B%EF%BC%88%E7%B0%A1%E8%80%8C%E6%98%93%E6%87%82%E7%9A%84%E4%BE%8B%E5%AD%90%EF%BC%9A%E9%9B%BB%E5%AD%90%E6%9B%B8%E5%BA%97%EF%BC%89\" >4. Six-layer structure of blockchain (simple and easy-to-understand example: e-book store)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/100lifestyle.com\/en\/blockchain\/#%E4%BA%94%E3%80%81%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9A%84%E5%85%AC%E9%8F%88%E3%80%81%E7%A7%81%E9%8F%88%E3%80%81%E8%81%AF%E7%9B%9F%E9%8F%88\" >5. Public chain, private chain and alliance chain of blockchain<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/100lifestyle.com\/en\/blockchain\/#%E5%85%AD%E3%80%81%E5%8D%80%E5%A1%8A%E9%8F%88%E5%AF%A6%E9%9A%9B%E6%87%89%E7%94%A8%E8%88%87%E6%9C%AA%E4%BE%86%E5%B1%95%E6%9C%9B\" >6. Practical applications and future prospects of blockchain<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/100lifestyle.com\/en\/blockchain\/#Q_A_%E5%8D%80%E5%A1%8A%E9%8F%88%E6%8A%80%E8%A1%93%E5%B0%8F%E5%95%8F%E7%AD%94\" >Q&amp;A Blockchain Technology Questions and Answers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/100lifestyle.com\/en\/blockchain\/#%E7%B5%90%E8%AB%96%EF%BC%9A%E4%BB%80%E9%BA%BC%E6%98%AF%E5%8D%80%E5%A1%8A%E9%8F%88%EF%BC%9F\" >Conclusion: What is blockchain?<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading myh2\"><span class=\"ez-toc-section\" id=\"%E4%B8%80%E3%80%81%E5%8D%80%E5%A1%8A%E9%8F%88%E6%98%AF%E4%BB%80%E9%BA%BC%EF%BC%9F\"><\/span>1. What is blockchain?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">The underlying technology of blockchain<\/h3>\n\n\n\n<p>Blockchain is a decentralized recording technology.<strong>You can think of it as a kind of large global shared ledger, anyone can record transactions on it, and once a transaction is recorded, it cannot be modified or deleted<\/strong>.<span style=\"background-color: #ffcc99;\">This ensures data security and transparency. (This is why cryptocurrencies using blockchain technology are more secure and transparent than traditional finance)<\/span><\/p>\n<p>More colloquially, you can think of the blockchain as a ledger that everyone can see, like a magic ledger, whenever someone writes a transaction in it, the transaction will be automatically copied to every on a personal account. Every new transaction is like a new page, automatically posted to the last page of the ledger. Moreover, this process is irreversible, that is to say, you cannot tear off or paint over the pasted pages. This is the blockchain, a magical ledger that keeps getting thicker but cannot be rewritten.<\/p>\n\n\n\n<figure class=\"wp-block-pullquote\"><blockquote><p>Blockchain gets its name from the way it works: each<strong>&quot;block&quot;<\/strong>Contains the latest batch of transactions with links to previous<strong>&quot;block&quot;<\/strong>, forming a continuous<strong>&quot;chain&quot;<\/strong>. Since each block contains the information of the previous block, if someone tries to modify the information of a certain block, he must modify the block and all subsequent blocks, which is almost impossible in practice .<\/p><\/blockquote><\/figure>\n\n\n\n<p>The underlying technology of blockchain mainly includes the following parts:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>P2P network (Peer-to-Peer network)<\/strong>: The blockchain is built on a decentralized network, and each participant (also known as a node) has a complete copy of the entire blockchain.<\/li>\n\n\n\n<li><strong>Encryption Technology<\/strong>: In order to ensure the security of the transaction, the blockchain uses the cryptography technology of the public key and the private key. Only those who know the private key can transact with the corresponding public key.<\/li>\n\n\n\n<li><strong>consensus algorithm<\/strong>: To determine which transactions are valid without a central authority, blockchains use consensus algorithms. The most common consensus algorithms include Proof of Work (PoW) and Proof of Stake (PoS).<\/li>\n<\/ol>\n\n\n\n<p>Blockchain is a relatively complex technology, but at its core the idea is to create a way of recording data that is fraud-proof, transparent and secure. This technology has been applied to many fields, including financial services, supply chain management, and even real estate to name a few.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">How Blockchain Works<\/h3>\n\n\n\n<p>In fact, each new &quot;page&quot; (block) will be made a special &quot;brand&quot; before it is pasted on the ledger<span style=\"background-color: #ffcc99;\">(hash value)<\/span>, this &quot;stamp&quot; comes from all transaction records on this page and the &quot;stamp&quot; on the previous page. So, if someone tries to surreptitiously rewrite content on a page, the &quot;brand&quot; of that page will be changed and it will affect all subsequent pages, it&#039;s like a magic chain that connects every page, making sure no one can Secretly tampered with.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">How does blockchain ensure data security and transparency?<\/h3>\n\n\n\n<p>First, due to the decentralized nature of the blockchain, its data is stored in many different nodes on the network, which makes it difficult for attackers to find a centralized target to attack. Furthermore, as mentioned before, any modification to the transaction record will change the hash value and affect all subsequent blocks, which makes illegal modification almost impossible.<\/p>\n\n\n\n<figure class=\"wp-block-pullquote\"><blockquote><p>As for transparency, since every transaction is recorded and can be publicly queried, this ensures that all transactions can be supervised by the public and prevents fraud and corruption.<\/p><\/blockquote><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%8E%A8%E8%96%A6%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9B%B8%E9%97%9C%E6%9B%B8%E7%B1%8D%EF%BC%9A%E5%8D%80%E5%A1%8A%E9%8F%88_%E6%94%B9%E8%AE%8A%E6%9C%AA%E4%BE%86%E7%9A%84%E5%80%92%E6%95%B8%E8%A8%88%E6%99%82\"><\/span>Recommended blockchain-related books:<a href=\"https:\/\/whitehippo.net\/30qPm\" target=\"_blank\" rel=\"noreferrer noopener sponsored\">Blockchain: Countdown to changing the future<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/whitehippo.net\/30qPm\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-26-at-17.23.14-Large-753x1024.jpeg\" alt=\"\u5340\u584a\u93c8\u662f\u4ec0\u9ebc\" class=\"wp-image-4409\" style=\"width:500px\" width=\"500\" srcset=\"https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-26-at-17.23.14-Large-753x1024.jpeg 753w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-26-at-17.23.14-Large-220x300.jpeg 220w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-26-at-17.23.14-Large-768x1045.jpeg 768w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-26-at-17.23.14-Large-9x12.jpeg 9w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-26-at-17.23.14-Large-585x796.jpeg 585w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-26-at-17.23.14-Large.jpeg 854w\" sizes=\"(max-width: 753px) 100vw, 753px\" \/><\/a><figcaption class=\"wp-element-caption\">If you are interested, please go to Hyread<a href=\"https:\/\/whitehippo.net\/30qPm\" target=\"_blank\" rel=\"noreferrer noopener sponsored\">Buy this e-book<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>Reasons for recommending this book:<\/strong><\/h3>\n\n\n\n<p class=\"has-blush-light-purple-gradient-background has-background\">In this &quot;self-centered&quot; era, blockchain is leading us towards a more decentralized future. It not only represents the idea of decentralization, but also highlights that everyone can become a center of influence. The advantages of blockchain technology are that it is secure, transparent, fast and low-cost, and it eliminates the need for third-party intermediaries. Imagine being able to more easily manage your mortgage, your will, and when you shop online, being able to track your items every step of the way. Blockchain will comprehensively revolutionize identity verification, transactions, data storage and securities industries, bringing us information security.<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">This book exhaustively explores the relationship between blockchain and cryptocurrencies and shows how blockchain technology moves from theory to practical applications. For beginners or those who are still on the fence, this book will be a guide to help you keep up with the times.<\/mark><\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading myh2\"><span class=\"ez-toc-section\" id=\"%E4%BA%8C%E3%80%81%E5%8A%A0%E5%AF%86%E8%B2%A8%E5%B9%A3%E5%A6%82%E4%BD%95%E5%8A%A0%E5%AF%86%EF%BC%9F%E8%99%9B%E6%93%AC%E8%B2%A8%E5%B9%A3%E8%88%87%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9A%84%E7%9B%B8%E9%97%9C%E6%87%89%E7%94%A8\"><\/span>2. How to encrypt cryptocurrency? Related applications of virtual currency and blockchain<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>when we talk about<a href=\"https:\/\/100lifestyle.com\/en\/2023\/07\/22\/crypto-investment\/\" target=\"_blank\" rel=\"noreferrer noopener\">Virtual currency<\/a>, you may first think of<strong>Bitcoin and Ethereum<\/strong>. These are digital assets based on blockchain technology, and they are also the two most well-known virtual currencies on the market. Bitcoin is considered the first virtual currency to actually use blockchain technology, while ether is the native currency on the ethereum network, which allows users to create and run smart contracts.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How does virtual currency utilize blockchain technology?<\/h3>\n\n\n\n<p>Here, the blockchain plays a role similar to a public transaction record or ledger, and virtual currency transactions are various activities recorded on this ledger. Each transaction is added to a new block, which is then added to the end of the blockchain. Such a structure ensures that all transactions can be traced and verified, and once a transaction is recorded on the blockchain, it cannot be modified or reversed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The Double Spending Problem<\/h3>\n\n\n\n<p>The problem with double payment is that digital currency is just data, which can theoretically be copied, so a person may use the same money to make multiple payments. However, blockchain technology, through its decentralized and public nature, is capable of verifying each transaction that the user has sufficient funds to complete the transaction as it occurs. If a user tries to pay with funds that have already been spent, the transaction will be recognized as invalid by other nodes on the blockchain.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong><span style=\"text-decoration: underline; color: #ff0000;\">For example, you have 10 units of digital currency and you decide to buy 10 units of commodity A. After the transaction is completed, the merchant receives your 10 units of currency and hands product A to you.<\/span><\/strong><\/p>\n\n\n\n<p><strong><span style=\"text-decoration: underline; color: #ff0000;\">But in this kind of system, you can have a bad idea. Since digital currency is essentially just data, you might try to duplicate this 10-unit transaction and try to use the same 10 units to buy 10 units worth of commodity B. In this case, you are paying the same amount of money for two items, which is known as &quot;double-spending&quot;.<\/span><\/strong><\/p>\n<\/blockquote>\n\n\n\n<p>However, this can be prevented if we use blockchain technology.<span style=\"background-color: #ffff99;\">When you try to buy item B with the same currency for the second time, a node on the blockchain will check your transaction history and find that you have already spent that currency to purchase item A. Therefore, your second transaction will be rejected and item B will not be purchased. This is how blockchain solves the double spending problem.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"&quot;Blockchain&quot; that changes the world | Mr &amp; Mrs Gao\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/sjx_rpay9rk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading myh2\"><span class=\"ez-toc-section\" id=\"%E4%B8%89%E3%80%81%E5%85%AC%E9%91%B0%E3%80%81%E7%A7%81%E9%91%B0%E6%98%AF%E4%BB%80%E9%BA%BC%EF%BC%9F%E5%AF%86%E7%A2%BC%E5%AD%B8%E8%88%87%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9A%84%E9%97%9C%E4%BF%82\"><\/span>3. What are public keys and private keys? The relationship between cryptography and blockchain<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Cryptography, literally, may make one think of mysterious secret codes or covert communications used by spies in movies, but it is actually a science that is widely used in various situations in our daily life, such as in For secure shopping and banking transactions on the Internet, cryptography plays a key role in the blockchain.<\/p>\n\n\n\n<p>In cryptography, we often hear two important concepts:<strong><span style=\"background-color: #ffcc99;\">public key and private key<\/span><\/strong>. You can think of them as a special lock and key.<span style=\"text-decoration: underline;\"><strong><span style=\"color: #ff0000; text-decoration: underline;\">public key<\/span>It&#039;s like a public lock that anyone can lock the messages they want to send to you, but only yours<span style=\"color: #ff0000; text-decoration: underline;\">private key<\/span>Only then can this lock be opened and those messages read. This is known as public key encryption and private key decryption.<\/strong><\/span><\/p>\n\n\n\n<p>So, what does this have to do with blockchain? In blockchain,<span style=\"background-color: #ffff00;\"><strong>Each transaction will be signed with the private key of the sender. This signature is like a digital fingerprint, which can confirm that the transaction is indeed sent by the sender.<\/strong><\/span>. Others can then use the sender&#039;s public key to confirm the signature and verify the validity of the transaction. This is what public and private keys do in a blockchain.<\/p>\n\n\n\n<p>Furthermore, cryptography also protects the security of blockchain transactions. By using complex mathematical algorithms, encryption technology converts data into a form that only the holder of the private key can decipher, which ensures that even if the data is transmitted over a public network, it cannot be read or modified by third parties. At the same time, due to the uniqueness of the private key, only the holder of the private key can conduct transactions, which prevents others from forging transactions.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><div class=\"pcrstb-wrap\"><table><thead><tr><th><\/th><th>private key<\/th><th>public key<\/th><\/tr><\/thead><tbody><tr><td>definition<\/td><td>A secret, unique set of numbers or letters<\/td><td>Calculated from the private key, it can be shared publicly without revealing the private key.<\/td><\/tr><tr><td>Function<\/td><td>\u2013 Initiate a transaction: Sign the transaction to ensure legitimacy<br>\u2013 Access rights control assets<\/td><td>\u2013 Receive Funds: For receiving cryptocurrency funds<br>\u2013 Transaction verification legality<\/td><\/tr><tr><td>use<\/td><td>\u2013 Sign transaction<br>\u2013 Control asset access rights<\/td><td>\u2013 Receive funds<br>\u2013 Verify transaction legitimacy<\/td><\/tr><tr><td>Safety Precautions<\/td><td>\u2013 Protect the private key from loss, otherwise the assets cannot be accessed<br>\u2013 Prevent private keys from being stolen<\/td><td>\u2013 The public key can be shared publicly, but the private key is kept secret<br>\u2013 Pay attention to safety when using<\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n\n\n\n<p>To sum up, cryptography plays an extremely important role in the blockchain. By using public and private keys, we can ensure the authenticity and security of transactions, and by using encryption technology,<span style=\"text-decoration: underline;\"><strong>We can ensure the privacy and immutability of data<\/strong><\/span>. These are the key factors for blockchain to be a safe and reliable technology.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%9B%9B%E3%80%81%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9A%84%E5%85%AD%E5%B1%A4%E7%B5%90%E6%A7%8B%EF%BC%88%E7%B0%A1%E8%80%8C%E6%98%93%E6%87%82%E7%9A%84%E4%BE%8B%E5%AD%90%EF%BC%9A%E9%9B%BB%E5%AD%90%E6%9B%B8%E5%BA%97%EF%BC%89\"><\/span>4. Six-layer structure of blockchain (simple and easy-to-understand example: e-book store)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Layers-Large-1024x1024.jpeg\" alt=\"\u5340\u584a\u93c8\u7684\u5c64\u7d1a\" class=\"wp-image-4263\" style=\"object-fit:cover;width:500px;height:500px\" width=\"500\" height=\"500\" srcset=\"https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Layers-Large-1024x1024.jpeg 1024w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Layers-Large-300x300.jpeg 300w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Layers-Large-150x150.jpeg 150w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Layers-Large-768x768.jpeg 768w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Layers-Large-12x12.jpeg 12w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Layers-Large-585x585.jpeg 585w, https:\/\/100lifestyle.com\/wp-content\/uploads\/2023\/08\/Layers-Large.jpeg 1080w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"has-medium-font-size\"><strong>Here I take &quot;Xiao Ming&#039;s e-book store&quot; as an example of using blockchain technology:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Data Layer<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>simile<\/strong>: Think of the bookshelves in a bookstore. Each book has a unique number, author and publication date. Here, each book is like a block of the blockchain, storing transaction information.<\/li>\n\n\n\n<li><strong>explain<\/strong>: Whenever Xiao Ming sells an e-book, the transaction will be recorded and stored in this layer.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Network Layer<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>simile<\/strong>: It&#039;s like visitors to a bookstore who share with each other the books they see in the store.<\/li>\n\n\n\n<li><strong>explain<\/strong>: Whenever there is a new transaction (such as selling a book), all participants will know about it, ensuring that information circulates in the network.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Consensus Layer<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>simile<\/strong>: Imagine that a bookstore has a set of rules and only if a majority of visitors agree with the price of a certain book, that price will be accepted.<\/li>\n\n\n\n<li><strong>explain<\/strong>: In the blockchain, nodes must reach consensus to add new transactions. For example, PoW requires nodes to perform calculations to prove that its transactions are valid.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Actuator Layer<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>simile<\/strong>: Whenever someone prices a book according to the rules of the bookstore, he will get some rewards, such as discount coupons.<\/li>\n\n\n\n<li><strong>explain<\/strong>: In a blockchain, nodes maintain the network and ensure its security, and in return, they receive some form of reward, such as Bitcoin.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Contract Layer<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>simile<\/strong>: If you buy five books, you&#039;ll automatically get a free book. This is an automated promotion for bookstores.<\/li>\n\n\n\n<li><strong>explain<\/strong>: This is similar to a smart contract on the blockchain, where certain operations are automatically executed when specific conditions are met.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Application Layer<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>simile<\/strong>: In addition to selling books, Xiao Ming\u2019s bookstore also provides activities such as music, coffee, and reading groups.<\/li>\n\n\n\n<li><strong>explain<\/strong>: These are different applications based on the underlying technology, just as blockchain technology is not only used for transactions, but also has a variety of other applications, such as supply chain, health passports, and copyright management.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BA%94%E3%80%81%E5%8D%80%E5%A1%8A%E9%8F%88%E7%9A%84%E5%85%AC%E9%8F%88%E3%80%81%E7%A7%81%E9%8F%88%E3%80%81%E8%81%AF%E7%9B%9F%E9%8F%88\"><\/span>5. Public chain, private chain and alliance chain of blockchain<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Blockchain technology has received widespread attention and discussion in recent years, and when we discuss blockchain, we often encounter the terms &quot;public chain&quot;, &quot;private chain&quot; and &quot;consortium chain&quot;. These terms describe different blockchain structures and participation methods, each of which has its own uniqueness and applicable scenarios. The public chain is a completely open system, and anyone can participate and verify transactions. In contrast, a private chain is a restricted system in which only specific members can participate. The consortium chain is somewhere in between. It is jointly maintained and operated by multiple organizations, combining the transparency of the public chain with the security of the private chain. Let\u2019s take a closer look at the features and differences between these three.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><div class=\"pcrstb-wrap\"><table><thead><tr><th>type<\/th><th>definition<\/th><th>example<\/th><th>main feature<\/th><\/tr><\/thead><tbody><tr><td>Public chain<\/td><td>An open blockchain where anyone can participate.<\/td><td>Bitcoin, Ethereum<\/td><td>Open, transparent, non-tamperable, and all participants have equal rights.<\/td><\/tr><tr><td>Private chain<\/td><td>A restricted blockchain in which only participants with specific authorization can participate.<\/td><td>Blockchain used within enterprises<\/td><td>Private, faster transaction confirmation, higher security (due to limited participants), higher scalability.<\/td><\/tr><tr><td>Alliance chain<\/td><td>A blockchain that is jointly participated and controlled by multiple organizations.<\/td><td>Supply chain solutions, inter-bank trading platform<\/td><td>Nodes are jointly controlled by several organizations, with fast transaction speed and a balance between transparency and privacy.<\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading myh2\"><span class=\"ez-toc-section\" id=\"%E5%85%AD%E3%80%81%E5%8D%80%E5%A1%8A%E9%8F%88%E5%AF%A6%E9%9A%9B%E6%87%89%E7%94%A8%E8%88%87%E6%9C%AA%E4%BE%86%E5%B1%95%E6%9C%9B\"><\/span>6. Practical applications and future prospects of blockchain<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>When we talk about blockchain, the first thing you may think of is virtual currency, such as Bitcoin or Ethereum, but in fact the application scope of blockchain is far more than that. Let&#039;s explore the application of blockchain in other industries and its future trends.<\/p>\n\n\n\n<p><strong>Further reading (the following linked article describes the current practical applications of blockchain in more detail)<\/strong>:<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-q\u5c0f\u91ac\u7684-100-\u7a2e\u751f\u6d3b-lifestyle\uff5c\u52a0\u5bc6\u8ca8\u5e63-\u6578\u4f4d\u8f49\u578b-\u79d1\u6280\u751f\u6d3b wp-block-embed-q\u5c0f\u91ac\u7684-100-\u7a2e\u751f\u6d3b-lifestyle\uff5c\u52a0\u5bc6\u8ca8\u5e63-\u6578\u4f4d\u8f49\u578b-\u79d1\u6280\u751f\u6d3b\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"nsQ9ymMtmu\"><a href=\"https:\/\/100lifestyle.com\/en\/blockchain-application\/\">[Blockchain application lazy bag] I am not afraid that AI will make most human beings unemployed, and the blockchain will bring more new job opportunities within 10 years<\/a><\/blockquote><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"[Blockchain application for lazy people] We are not afraid that AI will make most human beings unemployed. Blockchain will bring more new job opportunities in 10 years - Q Xiaojiang\u2019s 100 LifeStyles | Cryptocurrency digital transformation technology life\" src=\"https:\/\/100lifestyle.com\/blockchain-application\/embed\/#?secret=iWfh9vi5NX#?secret=nsQ9ymMtmu\" data-secret=\"nsQ9ymMtmu\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Blockchain application in financial industry<\/h3>\n\n\n\n<p>First, in the financial industry, blockchain is gradually changing the way we conduct transactions and manage assets. Many banks and financial institutions have begun to use blockchain to simplify payment processes, increase transaction speed, reduce costs, and improve trust and security through the transparency and immutability of blockchain.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Blockchain application in medical industry<\/h3>\n\n\n\n<p>Then, in the medical industry, blockchain can be used to create a secure, private and immutable medical record database, so that medical information can be quickly and securely shared among medical providers, thereby improving the efficiency and quality of medical services.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Supply Chain Blockchain Application<\/h3>\n\n\n\n<p>In addition, in supply chain management, blockchain can be used to track the entire process of products from origin to consumers, allowing consumers to view the source, production process and transportation of products, thereby improving the transparency of the supply chain and enhancing consumption. trust in the product.<\/p>\n\n\n\n<p>Of course, this is just one of the possible applications of blockchain. The potential of blockchain is enormous, and we may only be seeing the tip of the iceberg. With the continuous development and improvement of technology, we can foresee that the blockchain will play an increasingly important role in various industries in the future, and may bring profound changes to our society. Whether it is in public services, energy management, intellectual property protection, voting systems, etc., the blockchain may provide us with more secure, transparent and efficient solutions. In the future, we can also talk about the art field can also rely on such technology to ensure the value and authenticity of authentic products.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading myh2\"><span class=\"ez-toc-section\" id=\"Q_A_%E5%8D%80%E5%A1%8A%E9%8F%88%E6%8A%80%E8%A1%93%E5%B0%8F%E5%95%8F%E7%AD%94\"><\/span>Q&amp;A Blockchain Technology Questions and Answers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Q: What are the disadvantages of blockchain technology?<\/strong> <\/p>\n\n\n\n<p>Answer: Although blockchain technology has many advantages, such as transparency, decentralization, security, etc., there are also some disadvantages. For example, blockchain transactions require long processing times and require a lot of computer processing power and energy. In addition, the decentralized nature of the blockchain also means that once a transaction is completed, it cannot be reversed or amended.<\/p>\n\n\n\n<p><strong>Q: What makes blockchain technology more and more important in today&#039;s society?<\/strong> <\/p>\n\n\n\n<p>Answer: Blockchain technology makes the storage and exchange of information more transparent and secure, which is very valuable in many fields. For example, in financial transactions, asset management, proof of rights and other fields, blockchain has high application value. With the advancement of technology, blockchain will likely be used in more fields, such as government services, healthcare, etc.<\/p>\n\n\n\n<p><strong>Q: What advice do you have if you want to learn blockchain technology?<\/strong> <\/p>\n\n\n\n<p>Answer: The first step in learning blockchain technology is to understand its basic concepts, including what is a block, what is a chain, and what is encryption technology. Second, you can deepen your understanding by reading professional books, online tutorials, or taking related courses. Finally, practical operation is the best way to learn. You can try to participate in some open source blockchain projects to gain practical experience.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading myh2\"><span class=\"ez-toc-section\" id=\"%E7%B5%90%E8%AB%96%EF%BC%9A%E4%BB%80%E9%BA%BC%E6%98%AF%E5%8D%80%E5%A1%8A%E9%8F%88%EF%BC%9F\"><\/span>Conclusion: What is blockchain?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>After our discussion today, we have a deeper understanding of the blockchain. Blockchain is not only the technical foundation supporting virtual currency, but also a revolutionary and innovative technology that is gradually changing our society and economy. It ensures data security and transparency through cryptography, and uses a unique architecture to solve the double payment problem, allowing people to conduct reliable transactions without intermediaries.<\/p>\n\n\n\n<p><strong>Moreover, the scope of application of blockchain goes far beyond virtual currency. Whether in industries such as finance, healthcare, or supply chain management, blockchain is playing an important role in improving efficiency, reducing costs, and enhancing trust and transparency. In the future, with the continuous maturity of blockchain technology and the expansion of applications, we will see more innovations and possibilities.<\/strong><\/p>\n\n\n\n<p>Finally, I still encourage every reader, whether you are a technician or a general public, to have a deeper understanding of blockchain and actively participate in the progress of the blockchain world.<\/p>\n\n\n\n<figure class=\"wp-block-pullquote\"><blockquote><p>This is not just a technological revolution, but a social change that will change our lives. Remember, everyone can be a part of this change, let us witness and create the future of blockchain together.<\/p><\/blockquote><\/figure>","protected":false},"excerpt":{"rendered":"<p>In this article, I will try to simplify and unveil the mystery of this blockchain. The technical connotations of blockchain and cryptocurrency are no longer just the patent of technical experts, but knowledge that every reader can understand and master. And talk about the practical applications and future prospects of blockchain, and also introduce the application scenarios of blockchain,...<\/p>","protected":false},"author":1,"featured_media":2990,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[224],"tags":[],"class_list":["post-2951","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blockchain"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u3010\u5340\u584a\u93c8\u61f6\u4eba\u5305\u3011\u5230\u5e95\u5340\u584a\u93c8\u662f\u4ec0\u9ebc\uff1f5\u5206\u9418\u641e\u61c2\u4e00\u822c\u4eba\u4e0d\u61c2\u7684\u5340\u584a\u93c8\u6280\u8853 \u5340\u584a\u93c8\u539f\u7406 - 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