What * * * knowledge mechanism does the blockchain currently use? What are their respective advantages, disadvantages and scope of application?

1. What is the technology of blockchain?

If we assume that the database is an account book, then reading and writing the database can be regarded as an act of bookkeeping. The principle of blockchain technology is to find out the fastest and best bookkeeping person in a period of time. This person will keep accounts and then send this page of information on the ledger to everyone else in the whole system. This is equivalent to changing all the records in the database and sending them to every other node in the whole network, so blockchain technology is also called distributed ledger.

Blockchain refers to the technical scheme of collectively maintaining a reliable database through decentralization and distrust. The technical scheme is mainly to make any number of nodes participating in the system connect with each other through a series of data blocks generated by cryptography, each data block contains all information exchange data of the system in a certain period of time, and generate data fingerprints to verify the validity of its information and link the next database block. Blockchain is a general term for technical solutions similar to NoSQL (non-relational database), and it is not a specific technology. Blockchain technology can be implemented through many programming languages and architectures. There are also many ways to realize blockchain, including POW (proof of work), POS (proof of interest) and DPOS (proof of entrusted interest). The concept of blockchain was first put forward in the article Bitcoin: A Peer-to-Peer Electronic Cash System, written by an individual (or group) who called himself Satoshi Nakamoto. Therefore, Bitcoin can be regarded as the first application of blockchain in the field of financial payment.

2. What are the principles of blockchain?

Combined with the definition of blockchain, we need to have these four characteristics: decentralized, untrustworthy, collectively maintained and reliable database. And two other features will be derived from these four features:

Open source and anonymity. If a system does not have these characteristics, it will not be regarded as an application based on blockchain technology. Decentralization: there is no centralized hardware or management organization in the whole network, and the rights and obligations of any node are equal. The damage or loss of any node will not affect the operation of the whole system. Therefore, it can also be considered that the blockchain system has good robustness. No trust: there is no need to trust each other when all nodes in the whole system participate in data exchange. The operating rules of the whole system are open and transparent, and all data contents are also open. Therefore, within the rules and time range specified by the system, a node cannot and cannot cheat other nodes. Collective maintenance: the data blocks in the system are jointly maintained by all nodes with maintenance function in the whole system, and anyone can participate in these nodes with maintenance function. Reliable database: The whole system will enable each participating node to obtain a copy of the complete database in the form of a sub-database. Unless more than 5 1% nodes in the whole system can be controlled at the same time, the modification of the database on a single node is invalid, and the data content on other nodes is not affected. Therefore, the more nodes participate in the system, the stronger the computing power, and the higher the data security in the system. Open source: Because the operating rules of the whole system must be open and transparent, the whole system must be open source for the program. Anonymity: Because there is no need for mutual trust between nodes and public identity between nodes, each participating node in the system is anonymous.

3. What is blockchain finance?

20 16, innovators innovate. A new round of technological revolution will meet the challenge of trust between strangers enjoying the economy, and at the same time destroy the foundation of making money on such platforms.

Traditional intermediary

* * * Enjoy the economy. Although it effectively challenges the status quo and is innovative, it still adopts a very traditional business model.

The most common way to charge commissions for transactions has been used for centuries. Today, technology has made many things possible, but it still cannot completely replace the intermediary.

When P2P platform and other online markets just emerged, people talked about disintermediation, a new way to connect people directly through the network, bypassing the traditional intermediary. In fact, although we have realized that the new market is much more convenient and have seen the possibility of trading with various suppliers, we still rely heavily on intermediaries today. In fact, the biggest new enterprises today are giant intermediaries, whose scale is beyond imagination, such as Alibaba, Amazon, Yi Bei and Uber.

Is there a technical solution that can completely remove the intermediary between the two parties to the transaction? Is there a system where you can deal with anyone directly to avoid being cheated, and no one owns this system, so there is no commission receiver?

Blockchain technology makes it possible. Blockchain is the core technology of Bitcoin, which is highly innovative. It can be used to build a completely transparent, ownerless and decentralized system, which can ensure all kinds of traders to conduct transactions safely without any form of intermediary. These traders include people and enterprises.

Naturally, a lot of resources flow to the blockchain, and the blockchain has also brought considerable influence to the financial and legal industries. It will eventually wreak havoc in these two industries or provide the best opportunities, depending on how you look at it.

Decentralized finance

In 20 15, probably out of high sensitivity to the growth of alternative financial markets, nine investment banks jointly formulated the open standard of blockchain technology and finance service. Last year, there were various activities to discuss the future of blockchain technology, and Slock.it was launched, which was one of the first batch of decentralized and economic technology stack.

What is the * * * enjoyment economy under the blockchain?

If you want to continue to earn commissions in the economy, you must create a new business model.

Of course, the blockchain market will still need some investment. Developers may be willing to spend time solving the code that bothers the system. However, I haven't met any brand consultants, designers or businessmen who have similar ideas or are willing to invest. Code alone cannot help the blockchain market enter the mainstream.

However, the blockchain will flourish and get rid of annoying intermediaries. Almost predictably, it will definitely be cheaper than the existing economy. At that time, the giants will be forced to deal with it.

Old brands enjoy the economy and repeat history. Because it firmly believes that it is indestructible, it will decline and be quickly replaced by competitors with more flexibility and technical assistance? Or will we try to find a profitable market in * * * Enjoying Economy 2.0 and win the game?

What about credit?

Credit, the most frequently used word in all discussions related to enjoying the economy, is quite complicated and tricky. The current collaboration platform is very clear: we can improve the level of trust in the economy; We can take the best measures to ensure that users trust our platform and conduct transactions on it, but we cannot guarantee that the transactions between people are trustworthy. The blockchain solution solves the above problems.

The trading system in the blockchain cannot be changed, and each transaction can be tracked in the assigned ledger. Smart contracts completely set parameters and conditions for all transactions between the two parties, so the blockchain no longer needs any "trusted intermediary" or credit guarantor between strangers.

By 20 17, regulators will realize that they need to thoroughly reflect on the rules and regulations in the economic field. By then, the two sides will reach hundreds of millions of independent contracts in the blockchain. One solution is to type the rule code into the system.

When the * * * enjoyment economy first appeared around 2008, many people cheered and thought that it would lead us into a new inclusive and sustainable economy and a democratic force that would lead us into the post-capital paradigm in the future. However, this is not the case. The same was true when the Internet first appeared. The initial stage is utopian idealization. Therefore, people who have the same revolutionary expectations for the blockchain may be disappointed. Even so, the blockchain will shake the economic giants, which will not be affected.

4. Blockchain community

Bubi blockchain focuses on the innovation of blockchain technology and products. It has a number of core technologies and developed its own blockchain service platform. With decentralized trust as the core, we are committed to building an open value circulation network and allowing digital assets to flow freely.

Characteristics and advantages

A number of core technological innovations have been carried out, and our own blockchain basic service platform has been developed, which has been applied in the fields of equity, supply chain, points and credit.

Fast transaction verification

By optimizing key transaction links such as signature algorithm, * * identification mechanism and account book storage, Bubi blockchain can realize second-level fast transaction verification.

Efficient account book access

The adjustment of the account book storage structure by Bubi blockchain can save 90% of the storage space and reduce the risk of the decline of account book access performance caused by long-term operation of the system.

Multiple asset issuance

Bubi blockchain supports the issuance and transaction of different users and various assets, and each asset can track and record detailed information such as issuer, issuance quantity and transaction flow.

Joint signature control

It is allowed to set multiple users under the same account, and set corresponding permissions for different operations to meet the use scenarios of multi-party signature control.

Built-in intelligent contract

A smart contract is a set of commitments defined in digital form. The blockchain becomes a participant in the contract and is responsible for maintaining and saving the contract and automatically executing the contract.

Chain exchange

Compared with the traditional centralized exchange, the trading platform built with blockchain ensures that all transactions are verified, completed and saved in the chain, ensuring the security of users' transactions.

What Bubi blockchain needs to do is new technologies and products-realizing real value circulation and bringing the Internet to a new height. With the application of this technology, there can be no central organization when transferring assets, and the direct transfer of assets between us can be realized. In the future, if the network itself can be settled, we can transfer money directly without going through an intermediary.