Blockchain development HTML

1. It also depends on what kind of blockchain app you develop. A simple one can be done with thousands of yuan, and a complex one can be done with tens of thousands or even hundreds of thousands of yuan

2. How much does it cost to develop a blockchain application? For example, blockchain digital wallet
there are many kinds of blockchain digital wallet apps. For example, online applications can be divided into many kinds, including full node wallet, light wallet and centralized wallet. In addition, they can be divided into single chain wallet and Multi Chain Wallet, while offline applications can be divided into paper wallet and hardware Wallet
the development costs of different types of blockchain digital wallets are very different. For example, the development costs of single chain wallets and Multi Chain wallets are different because of the different system types used in the development. It can be known that the development of Multi Chain wallets is more difficult, because the quotation will be much higher than that of single chain wallets.

3.

On September 18, 2018, Hangzhou Internet court was officially put on the chain and became the first court in the world to use blockchain for trial

it is understood that prosecutors can submit electronic evidence such as contract, rights protection process and service process details online through online appeal portal, and notarization office, forensic identification center, CA / RA organization, court and other chain nodes can witness and endorse together to provide one-stop service for prosecutors. Hangzhou Internet court of Zhejiang Province made a public judgment on a case of infringement on the right of network dissemination of works' information, and confirmed the legal effect of electronic data with blockchain technology for the first time

2. In the field of logistics

in early 2018, rookie and tmall global jointly announced that blockchain technology has been used to track, upload and verify the logistics full link information of cross-border imported goods

after all nodes of the logistics chain are connected to the blockchain, the goods can be traced from manufacturers to consumers, forming a complete chain; The more links the commodity is missing, the more likely it is to be a fake proct

3. Electronic invoice

on August 10, 2018, Shenzhen International Trade revolving restaurant issued the country's first blockchain electronic invoice. It is understood that this blockchain electronic invoice was led by Shenzhen Taxation Bureau and provided by Tencent with underlying technology and ability

different from traditional e-invoice and simple e-invoice on the chain, this blockchain e-invoice combines "capital flow and invoice flow", combines invoice issuing with online payment, and gets through the whole process of invoice application, invoice issuing, reimbursement and tax declaration

there are still many practical applications of blockchain. You can learn more about relevant information

4. It is suggested that you should study the blockchain after you have just contacted it. In fact, blockchain is essentially a decentralized distributed ledger database. It is a series of data blocks generated by using cryptography Association. Each data block contains information about effective confirmation of multiple bitcoin network transactions. This is the definition of blockchain. If you want to have an in-depth understanding of blockchain, you need to do a little research. Including the characteristics of blockchain technology itself: decentralization, tamper proof, anonymous encryption, point-to-point transaction, intelligent contract, value quantification, accurate data description, etc., there are many contents, which will not be repeated one by one. I don't know which lawyer you are looking for in the field of blockchain. I have contacted the lawyer group of blockchain before. It's better to find a professional one. I hope it can help you.

5. Blockchain has the following characteristics:
decentralization. Blockchain technology does not rely on additional third-party management institutions or hardware facilities, and there is no central control. In addition to the self-contained blockchain itself, each node realizes information self verification, transmission and management through distributed accounting and storage. Decentralization is the most prominent and essential feature of blockchain

openness. Blockchain technology is based on open source. In addition to the private information of all parties involved in the transaction is encrypted, the data of blockchain is open to everyone. Anyone can query blockchain data and develop related applications through the open interface, so the information of the whole system is highly transparent

independence. Based on consensus specifications and Protocols (similar to various mathematical algorithms such as hash algorithm used by bitcoin), the whole blockchain system does not rely on other third parties, and all nodes can automatically and safely verify and exchange data in the system without any human intervention

6. 1. Public chain, no official organization and management organization, no central server, participating nodes freely access to the network according to the system rules, not controlled, and work based on consensus mechanism among nodes Subversive: absolutely credible and open) < br > typical case: digital currency represents bitcoin < br > 2. The private chain is built within a group. The operation rules of the system are set according to the requirements of the group, and the modification or read permissions are limited to some extent, while maintaining the authenticity and partial decentralization of the blockchain Typical case: R3 < br > 3. Alliance chain, jointly initiated by several institutions, is between the public chain and the private chain, and has the characteristics of partial decentralization. The read permission on the fast chain in this area may be public or partially public, that is to say, multiple pre selected nodes are designated as bookkeepers internally, and the pre selected nodes compete for bookkeeping permission, Other access nodes can participate in the transaction, but not the accounting process The abilities of the candidates should not be uneven< Br > (relatively credible and open) < br > existing cases: Super ledger < br > example:? In the case of loan diversion, when the user jumps to the other party's website for registration through our link, the docking party can choose to cheat and say that it has not received the user's registration request. However, if we put the user registration behavior into the block, if the docking party wants to receive the user registration behavior, it must pay us at the same time.

7. Blockchain is a term in the field of information technology. In essence, it is a shared database. The data or information stored in it is characterized by "unforgeability", "trace in the whole process", "traceability", "openness and transparency" and "collective maintenance". Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects
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8. The concept of "blockchain" was put forward as early as 2008. As a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies, blockchain has the characteristics of disintermediation, good traceability, and difficult to tamper. In recent years, it has been widely concerned around the world, with which a new instrial form is forming
the formation of blockchain instry was once closely related to the birth and development of bitcoin, but blockchain is not equal to bitcoin and other digital coins. After the boom of bitcoin and other virtual currencies graally subsided, countries have begun to realize the real value of blockchain as an emerging underlying computing technology, and have accelerated the strategic layout. Globally, the application scenario of blockchain has basically realized the extension from the initial digital currency and mining machinery manufacturing to financial services. At present, it is developing to supply chain, digital right, food and drug traceability and other fields
key R & D directions of China's blockchain technology include large-scale consensus algorithm, smart contract technology, software and hardware privacy protection, cross chain protocol, blockchain storage, etc. Among them, there are high R & D bottlenecks in large-scale consensus algorithm, cross chain protocol, blockchain storage and other technical fields. At present, smart contract technology and cross chain protocol have been applied in depth, and can significantly improve the efficiency of blockchain application
the instrial structure of blockchain tends to be convenient for developers: through any service network portal, blockchain application developers can purchase cloud resources with TPS (transactions per second), storage capacity and bandwidth as charging standards at any public city node in the world. Users can choose any underlying framework that has been adapted to develop, deploy and operate blockchain applications with extremely low cost and convenient operation
the underlying framework of alliance chain will become the mainstream service in the instry: most of the underlying frameworks of alliance chain adopt the concept of LAN deployment, and each underlying framework of alliance chain complies with a series of unified standards when adapting to the service network, such as key algorithm and gateway SDK. Developers can use the same key certificate to access different applications of different underlying frameworks through authorization
the Xueshuo innovation blockchain Technology Workstation of Lianqiao ecation online is the only approved "blockchain Technology Specialty" pilot workstation of "smart learning workshop 2020 Xueshuo innovation workstation" launched by the school planning, construction and development center of the Ministry of ecation of China. Based on providing diversified growth paths for students, the professional station promotes the reform of the training mode of the combination of professional degree research, proction, learning and research, and constructs the applied and compound talent training system.