Blockchain platform Convention
Blockchain platforms include Ethereum, Asch and other underlying application development platforms
Ethereum, an open source public blockchain platform with smart contract function, provides decentralized Ethereum virtual machine to process point-to-point contract through its special cryptocurrency ether (ETH)
arch, a decentralized application platform based on side chain technology. Asch is designed to lower the threshold of developers, such as using JavaScript as the application programming language and supporting relational database to store transaction data, which is believed to be very attractive to developers and small and medium-sized enterprises
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in 2008, Nakamoto first proposed the concept of blockchain. In the following years, blockchain has become the core component of electronic currency bitcoin: public account book for all transactions
by using peer-to-peer network and distributed timestamp server, the blockchain database can be managed independently. The blockchain invented for bitcoin makes it the first digital currency to solve the problem of repeated consumption. Bitcoin's design is a source of inspiration for other applications
bitcoin is the absolute mainstream of digital currency, and digital currency is in full bloom. Bitcoin, litecoin, dogecoin, dashcoin are common. In addition to currency application, there are various derivative applications, such as Ethereum, Asch and other underlying application development platforms, as well as NXT, SIA, bitstocks, maidsafe, ripple and other instrial applications
The global well-known blockchain trading platform can refer to the following figure:
there are many similar platforms, which can be viewed on non small platforms. The market of digital assets fluctuates a lot, and no one can say for sure. Compared with the previous boom, the current market is in the cooling stage
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
the second category of blockchain projects is platform. The main function of platform projects is to establish a technical platform to meet the technical requirements of various blockchain application development
in short, platform applications allow developers to directly issue digital assets and write smart contracts on the blockchain. Smart contract is a computer program running on the blockchain database, which can be executed by itself under the condition of meeting the source code setting
for example, you develop a smart contract based on the house rent protocol on the blockchain. When the owner receives the rent, it will trigger automatic execution and give the security key of the apartment to the tenant
the main function of platform blockchain projects is to establish the underlying technology platform, so that developers can do application development on the underlying technology platform. A considerable number of platforms are still in the development state. As of January 2018, Ethereum has the largest market value.
for example, when you are hospitalized and discharged from a hospital, you need to queue up to go through a lot of proceres, such as printing the flow details ring hospitalization, for example, going through the discharge settlement proceres, for example, going through the medical insurance settlement, and so on. Without half an hour, these proceres can't be completed. Because once you go through the discharge proceres, in fact, it is equivalent to the end of the hospital proceres. When it comes to medical insurance settlement, it is not only the hospital system, but also the medical insurance system. At present, the data systems of the two departments can not be directly connected, so they need to queue up to handle it by themselves
the blockchain can provide a distributed accounting mode. Under the protection of cryptography knowledge, you can not only share data with other companies, systems and departments, but also ensure that the data is owned by you. Through distributed accounting, you can achieve cross department cooperation and real-time settlement
after being linked, all information is open and transparent, and any information can be found in the block.
Public key and private key are typical examples of asymmetric encryption. The public key is responsible for encryption and the private key for decryption. Using asymmetric encryption, there is only one way to connect. Browsers use asymmetric encryption to verify public-private key pairs and extend the certificate itself. To do this, the browser will encrypt a small amount of one-time data with a ready to use public key. If the server can decrypt the data and send it back in plaintext, it proves that its private key corresponds to the public key. At this point, browsers and servers can start their encrypted links