Bitcoin side chain Ethereum

3. Bitcoin and Ethereum are both digital currencies. Bitcoin ranks first in market value, followed by Ethereum. After registering with the bitnet exchange, you can invest in them.

4. Ethereum has established a programmable and Turing complete blockchain. On this blockchain, you can realize the proction of all kinds of digital assets through a simple program, and you can also accurately control the status of the blockchain assets circulating on Ethereum by writing a program, such as whether the asset is to be paid or locked or has a quota, whether the account is a treasure list or a white list Ethereum and other digital assets, etc. At the same time, Ethereum is a programmable, flexible and complete blockchain network foundation. On this basis, we can realize more functional procts of non regional fast chain assets. For example, I use Ethereum to set up smart contracts, which can be applied in personal daily economic life and enterprise economic activities. Ethereum is a new and open blockchain platform based on the concept of blockchain and blockchain assets. It allows anyone to build and run decentralized applications on the platform by using blockchain technology. In short, Ethereum technology is blockchain technology plus smart contract.

5. All of them are deceiving. Many people have been cheated. Don't believe them. There is no free lunch, and there will be no pie in the sky

6. If you want to invest, it is recommended to consider whether you are optimistic about this instry first, because bitcoin, a kind of digital currency, has no real value, only collection value, and all the speculation prices are relatively high. If you want to invest, you should first choose a reliable old platform with good reputation, so that at least the money will not disappear out of thin air. You can take a look at AEX and fire coin, It has been more than 6 years and has a good reputation. For long-term investment, you can go to AEX for money management

7. As long as you can pay the deposit, choose the right direction.

8. 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

9.

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