代写范文

留学资讯

写作技巧

论文代写专题

服务承诺

资金托管
原创保证
实力保障
24小时客服
使命必达

51Due提供Essay,Paper,Report,Assignment等学科作业的代写与辅导,同时涵盖Personal Statement,转学申请等留学文书代写。

51Due将让你达成学业目标
51Due将让你达成学业目标
51Due将让你达成学业目标
51Due将让你达成学业目标

私人订制你的未来职场 世界名企,高端行业岗位等 在新的起点上实现更高水平的发展

积累工作经验
多元化文化交流
专业实操技能
建立人际资源圈

Assignment代写:Block chain

2018-05-16 来源: 51due教员组 类别: 更多范文

下面为大家整理一篇优秀的assignment代写范文- Block chain,供大家参考学习,这篇论文讨论了区块链。区块链是比特币的底层技术,我们可以将其理解为一种公共记账的机制,而并非一款具体的产品。区块链技术的基本思想是通过建立一组互联网上的公共账本,由网络中所有的用户共同在账本上记账与核账,以保证信息的真实性和不可篡改性。区块链虽源自比特币,但已有多项跨领域技术,皆是构成区块链的关键技术,而现在的区块链技术与应用,也已经远超过比特币区块链。

Block chain,区块链,assignment代写,美国作业代写,作业代写

Just like the word "database", blockchain is a design idea of a particular technology that can be implemented in most languages and implemented in different ways.

When it comes to the blockchain, you have to say bitcoins. Blockchain is the underlying technology of bitcoin, and we can understand it as a mechanism for public accounting, rather than a specific product. Block chain technology, the basic idea is: through the establishment of a set of public Internet books, jointly by all the users in the network on the books of account and nuclear account, to ensure the authenticity of information and tamper-resistant. And was called "block chain" because block chain storage structure is the result of data from the network one by one store "blocks" of a chain, each block contains a certain amount of time in all of the data communication network. Over time, the chain will grow.

Block chain is derived from the currency, but prior to that, for a number of interdisciplinary technology, is the key technology of block chain, now block chain technology and application, have been far more than the currency block chain.

The key work in the currency block chain proved mechanism used by Adam Back invented in 1997 by Hashcash workload prove algorithm, this algorithm based on the irreversible characteristics of the cost function, easy to verify but it is difficult to be cracked as features, was first applied to stop receiving junk mail.

In terms of privacy security, the research of block chain technology can be traced back to the privacy cryptography network payment system proposed by David Chaum in 1982. The system has not track features, become the currency block chain in the embryonic form of security, privacy, after David Chaum based on each theory further create cannot track cryptography eCash online payment system, but eCash are not a decentralized system.

In the block chain, the elliptic curve digital signature algorithm used in each transaction was proposed by Scott Vanstone and others in 1992. The history of this algorithm can be traced back to 1985, when Neal Koblitz and Victor Miller introduced elliptic curve cryptography. ECC first USES the elliptic curve for cryptography, and establishes an algorithm for public key cryptography. Compared with the current influential RSA algorithm, the advantage of ECC is that it can obtain a shorter key, but achieve the same security intensity.

Essentially, chain block is a kind of database technology, the sharing of the distributed database, can record all transactions, and improve efficiency, enhance transparency, security, and its biggest advantage is can solve the problem of the trust of the trading, thus between two strangers to establish a reliable and safe deal.

On the figure 1 shows clearly the establishment of a single block chain and validation process, and can be seen in figure 2, chain blocks, books are copied to multiple locations, each node holds his backup, according to a new transaction data update separately. The picture shows three consecutive transactions. In the first two transactions, the data and signature information are verified correctly by all six nodes matching the hash value. However, the hash value of transaction 3 of node 5 does not match with other nodes, which will be corrected by other nodes through "consensus".

The public chain is any node that is open to anyone, and everyone can enter the block chain to participate in the calculation, and anyone can download the block chain that gets the complete block chain data. This is the first and most widely used block chain, and the digital currency of each large bitcoin series is basically based on its corresponding public block chain. The public links that are now familiar to the industry include bitcoin, etheric square, superbooks, most other electronic currencies, and smart contracts, where the bitcoin block chain is the ancestor of the public chain.

Correspond to public block chain, chain in some blocks of the application scenario, does not want all people have rights to participate in the calculation of the system and view the data, only licensed node can participate in and check all the data, this block chain structure is known as a private chain. This type of block chain is relatively backward due to its conservative form. At present, several private block chain projects in the development stage include the Linux foundation, R3CEVCorda platform, and the super account project of Gem Health network, among which R3CEVCorda has the most extensive influence.

League chain refers to participate in each node permissions are completely equal, everyone in the case of without full trust can realize reliable data exchange in the development of the third class between public and private block chain. The bank block chain made up of R3 is a typical union chain. However, with the rapid development of block chain technology, the boundary between the public and private chains will become blurred. Because each node can have more complex to read and write permissions, there may be some permissions nodes will be open to all, and the key part of charge to an account or privileges node can only open to licensing of nodes.

This is in the chain of blocks in this new field of the latest concepts, is mainly refers to for confirmation from the other chain data of the block chain, it through the bidirectional wedge mechanism make COINS, Wright's currency and other digital currency assets in different blocks at a certain rate in the chain of transfer. At present, the side chain technology is mainly developed by BlockStream company, and the first commercial application Liquid based on side chain technology has been released, which can realize the exchange function.

The presence of side chains is a milestone for the block chain technology, which further extends the application scope and innovation space of the block chain technology. Although now it is still in its infancy, but as side chain technology development mature, block chain will be able to support include stocks, bonds, financial derivatives, such as various types of assets operation, and in the little micropayments, intelligent, safe handling contract mechanism, the application of real property registration in the world emerge in endlessly.

51due留学教育原创版权郑重声明:原创assignment代写范文源自编辑创作,未经官方许可,网站谢绝转载。对于侵权行为,未经同意的情况下,51Due有权追究法律责任。主要业务有assignment代写、essay代写、paper代写、美国作业代写服务。

51due为留学生提供最好的assignment代写服务,亲们可以进入主页了解和获取更多assignment代写范文 提供作业代写服务,详情可以咨询我们的客服QQ:800020041。

上一篇:Assignment代写:The formal beauty 下一篇:Assignment代写:Spanish film alte