Symbiosis of main chain and side chain of blockchain

1. The degree of decentralization of public chain. This kind of public blockchain, represented by bitcoin and Ethereum, is not controlled by a third party. All people in the world can read the data records on the chain, participate in transactions and compete for the bookkeeping rights of new blocks
program developers have no right to interfere with users, and each participant (i.e. node) can freely join and exit the network, and carry out relevant operations according to their wishes
private blockchain is on the contrary. The write permission of the network is fully controlled by an organization or institution, and the data read permission is regulated by the organization, either open to the outside world or with a certain degree of access restrictions
in short, it can be understood as a weakly centralized or multi centralized system. Because the participating nodes are strictly limited and few; Compared with public chain, private chain has shorter time to reach consensus, faster transaction speed, higher efficiency and lower cost
the alliance chain is a blockchain between the public chain and the private chain, which can realize "partial decentralization"
each node in the chain usually has its corresponding entity or organization; Participants join the network through authorization and form a stakeholder alliance to jointly maintain the operation of the blockchain.

2.

An important reason for the popularity of "virtual currency" in China is the lack of multi-level and multi category investment market, which makes many investors choose speculative procts such as "virtual currency"

therefore, China should also pay close attention to the construction of e-money system and virtual currency in line with the background of the times, improve the supervision of the investment market and the new financial technology system, and make good use of financial technology on the premise of preventing financial risks, so that it can better serve the real economy

in the face of the rapid development of Internet Finance and financial technology, relevant departments need to do a solid job in risk prevention and control while encouraging innovation. In order to regulate the development of this virtual commodity better and make its transaction in the market truly based on the use value, we should build special regulatory measures and even institutions for innovation such as "virtual currency" on the existing basis

3. Generally speaking, the main chain can be understood as a formal online and independent blockchain network; The side chain is not. It does not specifically refer to a blockchain, but is a general term for all blockchains that comply with the side chain protocol
the purpose of the side chain is to achieve two-way anchoring, so that some cryptocurrency can be "transferred" between the main chain and the side chain. Take bitcoin as an example: through the side chain technology, bitcoin can be "transferred" from the main chain to other blockchains, and can be used on the "transferred" blockchain. At the same time, bitcoin can safely "return" to the main chain; Bitcoin keeps the same value throughout the process. Therefore, the concept of side chain is relative to the main chain; As long as it conforms to the side chain protocol, all existing blockchains, such as Ethereum, lightcoin, zcash, etc., can become side chains
the deployment of side chain technology on the main chain means that users can use their existing assets to access the new cryptocurrency system, so as to achieve the operation purpose that cannot be achieved on the main chain. For example, using rootstock technology will enable bitcoin to conct more complex transaction operations, such as micro payment, through smart contract technology. At the same time, cryptocurrency can also expand its application scope through two-way circulation in the main chain and side chain
on the other hand, because the side chain is an independent blockchain and has its own node network, the code and data are relatively independent; So it will not increase the burden of the main chain in the process of running, to avoid the situation of excessive data expansion. However, the side chain technology is more complex, and it needs to support scripts that can be later reorganized to prove failed transactions and enough running nodes to ensure its security.

4. 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

5. Toobi, it's a unilateral trading operation mode, very safe

6. It's hard to say. My colleagues are learning from the chain.

7. I think it's the main chain

8. 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