Blockchain complex query

1.

blockchain includes public blockchain, joint (instry) blockchain and private blockchain. Public chain point-to-point e-cash system: bitcoin, smart contract and decentralized application platform: Ethereum

blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies

blockchain is an important concept of bitcoin. In essence, it is a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains a batch of bitcoin network transaction information, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

extended data

according to the different degree of blockchain network centralization, three kinds of blockchains under different application scenarios are differentiated:

1. The blockchain with the whole network open and without user authorization mechanism is called public chain

2. The authorized nodes are allowed to join the network, and the information can be viewed according to the authority. It is often used in the inter agency blockchain, which is called alliance chain or instry chain

3. All the nodes in the network are in the hands of one organization, which is called private chain

alliance chain and private chain are also called licensing chain, and public chain is called non licensing chain

blockchain features

1, 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

2. 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

3. 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

4. Safety. As long as 51% of all data nodes cannot be controlled, the network data cannot be arbitrarily manipulated and modified, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes

5. Anonymity. Unless there are legal requirements, technically speaking, the identity information of each block node does not need to be disclosed or verified, and the information can be transferred anonymously

2. Blockchain platform, do you want to see blockchain information? Here is Amway password finance, general chain circle, coin circle, DAPP and other information.

3. RMB is just a currency symbol, not a commodity. Things in law and things in real life are not the same concept.

4. Recently, I just used it for a few days under the recommendation of a friend. I think it's very good, with outstanding features and distinctive features. It's very suitable for novices in the coin circle. Of course, the information it provides can be used well by both new and old hands
wallet circle is an app that provides blockchain data analysis services. Its vision is to become the strongest search engine in blockchain and provide users with the best search service and data experience
the wallet circle provides core data such as wallet transaction details, wallet account relationship, and token query, which can help users see the complex digital asset world through multi angle analysis and multi-dimensional display
well known wallet query, big coin holder query, big dynamic query and large transaction reminder are the highlights of the wallet circle
in view of the fact that the current situation of the coin circle is that the makers are cutting leeks crazily, and the desire of leeks to earn a little money is constantly failing, the emergence of the wallet circle and its characteristic functions is expected to change the current situation of leeks being cut crazily. Of course, the premise of preventing leeks from being cut is that the leeks use the characteristic functions of the wallet circle to keep up with the operation in time when the makers make large transactions, rather than waiting for others to cut them
in general, the wallet circle is an epoch-making proct in the coin circle and a great blockchain search software.

5. As a distributed ledger structure, blockchain technology is irreversible and can not be tampered with at will. It can be widely used not only in the financial field, but also in supply chain management, intelligent manufacturing, cultural entertainment, financial services, health care, IP right, ecation, Internet of things, sharing economy, communication, social management, charity, public welfare, social employment and e-government
at present, the domestic Internet and it are all involved in the blockchain instry, and start to develop or launch a series of solutions for basic application cases. In the current development trend, it is one of the most representative blockchain application directions to integrate blockchain technology into smart life, Internet of things and other fields, integrate massive entity business application scenarios, carry out blockchain + entity instry projects, and realize the entity transformation and upgrading of entity instry
therefore, based on the characteristics of blockchain technology, it is more and more widely used and brings more and more convenience to people.