Blockchain from digital currency pdf
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to know the difference between them, we need to know the definition of them first
digital currency: short for digiccy, which is the abbreviation of "digital
currency", is an alternative currency in the form of electronic currency. Both digital gold coin and cryptocurrency belong to digiccy
blockchain: blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. Blockchain is essentially a decentralized database, also known as the trust machine
from the above definition, we can know that blockchain is a technology, and digital currency is a kind of virtual currency
digital currency is not equal to blockchain
many people will understand blockchain as blockchain. Here I want to correct that digital currency is not equal to blockchain. Digital currency is only an application of blockchain, and some digital currencies may not be applied to blockchain technology.
< Introction to cognition & gt Download link is attached at the end of the article)
new economy blueprint and guide
publication time: 2016
recommendation: this book is mainly for programmers. Combined with API programming, we can tell you the principle and usage of cryptocurrency, as well as how to develop related software. For non programmer readers, the first few chapters of this book are still applicable as in-depth introction of bitcoin. Book download
Dahua blockchain is a book published by Tsinghua University Press in September 2019, written by Zhang Yingping. This book is a blockchain book that comprehensively explains bitcoin, Ethereum, super ledger and EOS, a blockchain development guide from engineer basic skills, development language to smart contract development, and a blockchain engineer guide from technology, project to career development planning
"Dahua blockchain"
"Dahua blockchain" is a blockchain book that pays equal attention to theory and practice, easy to understand and professional. The blockchain technology guide (the first three chapters) mainly explains the concept of blockchain, blockchain applications, bitcoin, Ethereum, super ledger, EOS and other mainstream blockchain technologies. Through learning, each reader can fully understand the implementation principles of mainstream blockchain technologies and understand the future development trend of blockchain. The practical part of development (the last two chapters) starts from the basic skills of blockchain, simulates the development of real blockchain projects, and explains in detail the design, development and deployment of smart contract and DAPP. Through learning, every reader can master the development of blockchain
blockchain is the core supporting technology of digital cryptocurrency system represented by bitcoin. The core advantage of blockchain technology is decentralization. It can realize point-to-point transaction, coordination and cooperation based on decentralized credit in a distributed system without mutual trust by means of data encryption, time stamp, distributed consensus and economic incentive, so as to solve the common high cost, low cost and low cost of centralized institutions Low efficiency and data storage insecurity provide solutions
the application fields of blockchain include digital currency, token, finance, anti-counterfeiting traceability, privacy protection, supply chain, entertainment, etc. with the popularity of blockchain and bitcoin, many related top domain names have been registered, which has a great impact on the domain name instry
taking the tourism instry as an example, blockchain applications mainly focus on tourism travel, tourism community reviews, digital identity management, credit consumption management, tracking pilot's professional certificate and qualification, loyalty plan of hotels and airlines, reservation management and consumption points management. In addition, blockchain also has applications in finance, games, entertainment and other fields.
Does it have to be PDF? There are a series of blockchain books on hand. You can go to
with the continuous development and progress of society, great changes have taken place in our lifestyle, such as mobile payment and online shopping, which have brought great convenience to our life. Since the birth of online shopping, online payment has become a part of our life
online shopping is convenient, but it is also through the middle of a "invisible" process of payment, such as we bought something on the Internet, first pick out what you love, then you have to pay the problem:
now most people use Alipay is the way of payment, then first Alipay will receive payment request. Then it initiates the protocol to the network, saves the information to the database, and forwards the request to the bank. When the Alipay account shows that the dection is successful, it will have to be connected to the bank through the Internet. Then the buyer will confirm receipt after receiving the goods, so that the buyer will dect the money before transferring to the seller's account. Not only is the transaction process too cumbersome and complex, it is clear that the transaction between the two parties has to go through a series of links. More importantly, once the intermediate payment link collapses, the whole transaction will stop, and the subsequent operation is really troublesome
in fact, the popular explanation is that when I want to buy something, I give the money to the middleman and ask him to help the seller. If the middleman makes any mistakes, it may lead to the situation that the money can not be recovered and the goods can not be obtained
is there any way to simplify the transaction process and improve the transaction efficiency? Yes, the current hot blockchain technology and digital currency payment can better solve the above problems:
blockchain has become one of the hot topics in the past two years. Blockchain can replace the existence of these third-party services:
first, blockchain can not be tampered with. Every transaction will be distributed to each block for record keeping, Then use cryptography to verify, any malicious damage or record deletion will be found, so the whole process of shopping will be seen. Blockchain strengthens the trust, traceability and transparency in the transaction, making our transaction faster and more convenient<
the second is the unique payment characteristics of digital currency:
the decentralization of digital currency can eliminate the intervention of the third party, and there is no need to worry about the problems of the third party, resulting in the whole transaction payment process can not continue
the point-to-point transmission of digital currency saves the time link in the whole payment process and realizes fast payment, so that both parties can receive money quickly and save time
openness and transparency of digital currency: except for cash transactions, all transactions based on online payment are just a series of numbers, and all transactions of digital currency are open and transparent. You can check the transaction records of all payments, which can ensure the security of the overall commodity payment
and like China's booming WeChat, Alipay and other payment platforms, cross-border payment has been realized, but there is a problem that fees will be more expensive than domestic payments, and the settlement cycle will be longer than domestic. In general, efficiency will be slow, time is long, and hand renewal is expensive. Digital money will make traditional transactions "no longer traditional". That will also make cross-border payment more efficient: digital currency is not subject to the "constraints" of any country or bank. Based on blockchain technology, it can just bypass this centralized system with low handling charges, and its point-to-point transmission transaction characteristics can effectively improve the current problems of long-time and high cost of cross-border payment
the times have been developing, and the way of life is constantly improving. Online shopping and payment are born from our development, with both advantages and disadvantages. Then we will try our best to push everything in a better direction
digital currency is on the rise. Although the current digital currency is not perfect, many countries have begun to use digital currency as a payment method. Due to the various characteristics of digital currency, bitcoin, Ethernet, Las Y2, QTP (wechat ID: yingbivc), ASEC and other digital currencies are being actively used. They can not only simplify the traditional online payment transaction process, but also circulate payment around the world and rece exchange rate issues such as handling charges. Don't just look at digital currency with one eye. Maybe in the near future, it will open the era of digital currency full payment!
when the economy is stable, it doesn't rise. When the economy is in turmoil, people begin to store digital currency. Of course, it is convenient for some corrupt elements
now the economy is stable, the digital currency is in a bear market, the financial crisis, the crisis, and only when there is a crisis can there be an opportunity. At that time, the rapid growth of bitcoin was the opportunity in the financial crisis. Don't worry, there will be a bull market in digital currency, which is expected to come in the second half of next year