Blockchain side chain currency

1. 1. bitcoin
it is the birthplace of blockchain technology, and the market has confidence in it. It still maintains a stable growth under the adverse situation of major policies. Once it solves the problem of capacity expansion, the price rise can be predicted
2. Ethereum
compared with bitcoin, the advantage of Ethereum is that it has no policy problems. Although the event led to its bifurcation, the establishment of enterprise version Ethereum alliance may solve this problem. Its concept and Prospect of smart contract attract many developers to follow
the essence of community operation is that the majority decides the minority when indivials support eth
3. Zec
compared with bitcoin and Ethereum, the risk of z-coin will be greater, and its value will take a longer time to reflect. But in the long run, the value of anonymity will be one of the values that human beings generally pursue
4. BTS
bitstocks are very powerful and the system is very stable. Decentralized trading, anchoring system and so on. Although the founder bm's brain damage has hurt the community, the value of bitstocks is obviously undervalued. It is a wise choice to hold bitstocks on the cheap.

2. The side chain is another blockchain outside the main chain, which anchors a node in the main chain, maintains the authenticity of the side chain through the computing power on the main chain, and realizes the transfer of the value on the public blockchain and the value on other account books in multiple blockchains. The most representative implementation is blocksteam. In this kind of blockchain architecture, the main chain is sometimes called parent chain

3. Generally, blockchain, especially public chain, has main network and test network. The main network is a trusted blockchain network recognized by the blockchain community, and its transaction information is recognized by all members. Effective blocks will be added to the block ledger of the main network after the consensus of the blockchain network
many people don't understand what side chain is. This concept comes from bitcoin community and was put forward in December 2013. There are some problems with the birth of bitcoin itself or the mechanism of a blockchain itself. But if you modify bitcoin protocol or chain directly, it is easy to make mistakes. Moreover, because the bitcoin block has been operating continuously, if it is wrong, the amount of funds involved will be very large, which is not allowed
in fact, sidechains do not refer to a particular blockchain, but to all blockchains that comply with the side chain protocol. This term is relative to the main chain of bitcoin
for more information, what is a side chain

4. The main chain is the underlying technology foundation of all blockchain applications, just like chips and operating systems. Whoever can become the main chain of the basic layer of the blockchain and accumulate a large number of users and scenes is likely to become the future giants such as apple and Microsoft
however, for most scenarios of using and developing blockchain, it is not necessary to re create a set of blockchain, as long as we develop our own applications based on the existing underlying blockchain or technical framework. Therefore, for the similar encryption algorithm, P2P technology, consensus algorithm, we only need to have a basic understanding, and do not need in-depth study
the primary goal of blockchain application development is to find a relatively mature underlying blockchain for application development. The underlying blockchain needs powerful and easy-to-use development interface or framework, scalability, transaction frequency, etc
Rong technology is a listed financial technology company, which currently provides main chain construction and development services http://www.erong.com/new/blockchain/backbone/index.html

5. LF supports multi-level side chain, and token is used as the main token of side chain for value circulation on all side chains. There is circulation between the side chain and the main chain, and the asset side chain is connected to the main chain. Aelf reshapes the structure between chains. The structure of eth is similar to series connection, and the solution of aelf is to change "series connection" to "parallel connection". The so-called "parallel connection" is a main chain, and then connect each branch chain on the N side. This is what the aelf team calls "mother union + n side chain Multi Chain" structure.

6.

Meituan belongs to BTC type

BTC (business to customer) is one of the categories of e-commerce according to the trading partners, which means the e-commerce of commercial institutions to consumers

this form of e-commerce is generally based on online retail instry, mainly relying on the Internet to carry out online sales activities

BTC is also called B2C. B2C mode is the earliest e-commerce mode in China

extended information:

the payment method of B2C e-commerce is the combination of cash on delivery and online payment, while most enterprises choose logistics outsourcing to save operating costs

with the change of users' consumption habits and the promotion of excellent enterprise demonstration effect, the number of online shopping users is increasing. In addition, some large-scale examinations such as the civil service examination also began to implement B2C mode

its basic needs include user management needs, customer needs and vendor needs

user management requirements: user registration and user information management

customer needs: provide electronic directory to help users search and find the goods they need

compare similar procts to help users make purchase decisions

evaluate goods, add shopping cart, place order, cancel and modify order

be able to pay online; Track the status of the order

seller's needs: check the customer's registration information

process customer orders

complete the settlement of procts purchased by customers and process customer payment

be able to publish commodity information, publish and manage online advertising

establish an interface with the bank for electronic auction

inventory management

establish interface with logistics distribution system

be able to track proct sales

to achieve customer relationship management

provide after-sales service