What are the types of blockchain wallets? What are the blockchain coins?

1. Bitcoin.

It is the birthplace of blockchain technology, and the market has confidence in it, and it still maintains a stable growth in the case of major policies that are unfavorable to it, once it solves the problem of scaling, it is foreseeable.

2. Ethereum.

Compared to Bitcoin, Ethereum has the advantage of not having to worry about policy, and although the DAO incident led to its fork, the establishment of the Enterprise Ethereum Alliance may solve this problem. The concept and prospect of smart contracts proposed by it have attracted many developers.

Individuals support ETH, and the essence of community operation is that the majority decides the minority.

3. Compared with Bitcoin and Ethereum, ZEC will be more risky, and its value will take longer to reflect. But in the long run, the value of its anonymity will be one of the values that humanity universally pursues.

4. The function of BTS Bitstock is very powerful, and the system is also very stable. Decentralized exchanges, anchoring systems, and more. Although the community was hurt by the brain-dead behavior of the founder BM, the value of Bitcoin shares is significantly undervalued, and it is a wise choice to hold on to the dip.

Bitcoin, Litecoin, Ethereum, Grapefruit, these are all good, you can open ZB to take a look, the currency is very complete.

There are many investment currencies of virtual currency, such as Bitcoin, Ethereum, Ethereum Classic, Stellar, Litecoin, EOS, etc.

There are many currencies on the blockchain, the most common ones are Bitcoin, Litecoin, Ethereum, Ripple, EOS, Tether, Bitcoin Shares and many others.

Currency information.

A: Types of blockchains.

1. Public blockchain.

The public blockchain is that any individual or group in the world can send transactions, and the transaction can be validly confirmed by the blockchain, and anyone can participate in its consensus process.

2. Joint (industry) blockchain.

Industry blockchain by a group of designated multiple pre-selected nodes as the bookkeeper, the generation of each block by all the pre-selected nodes jointly decided (pre-selected nodes participate in the consensus process), other access nodes can participate in the transaction, but only ask the bookkeeping process (in essence, it is still managed bookkeeping, just become distributed bookkeeping, the number of pre-selected nodes, how to determine the bookkeeper of each block to become the main risk point of the blockchain), anyone else can be limited through the open API of the blockchain.

3. Private blockchain.

The private blockchain only uses the general ledger technology of the blockchain for bookkeeping, which can be a company or an individual, and enjoys the write permission of the blockchain exclusively, and this chain is not much different from other distributed storage solutions.

According to different classification standards, blockchains can be divided into the following types.

According to the different application scopes, blockchains can be divided into public chains, alliance chains, and private chains.

According to the different deployment mechanisms, blockchains can be divided into: main chain and test chain.

According to the different types of docking, blockchains can be divided into: side chains and interconnection chains.

Blockchain mainly solves the trust and security problems of transactions, so it proposes four technological innovations for this problem:

1) Distributed ledger, that is, transaction accounting is completed by multiple nodes distributed in different places, and each node records a complete account, so they can participate in supervising the legitimacy of the transaction, and at the same time can jointly testify for it.

Different from traditional distributed storage, the uniqueness of distributed storage of blockchain is mainly reflected in two aspects: first, each node of the blockchain stores complete data according to the block chain structure, and traditional distributed storage generally divides data into multiple parts for storage according to certain rules. Second, the storage of each node of the blockchain is independent and has the same status, relying on the consensus mechanism to ensure the consistency of the storage, while the traditional distributed storage generally synchronizes data from the central node to other backup nodes.

No single node can record ledger data separately, thus avoiding the possibility of a single bookkeeper being controlled or bribed to keep false accounts. Because there are enough accounting nodes, theoretically speaking, unless all nodes are destroyed, the accounts will not be lost, thus ensuring the security of the account data.

2) Asymmetric encryption and authorization technology, the transaction information stored on the blockchain is public, but the account identity information is highly encrypted and can only be accessed with the authorization of the data owner, thus ensuring the security of the data and the privacy of the individual.

3) The consensus mechanism is how to reach a consensus among all accounting nodes to determine the validity of a record, which is not only a means of identification, but also a means to prevent tampering. Blockchain proposes four different consensus mechanisms for different application scenarios, striking a balance between efficiency and security.

The consensus mechanism of the blockchain has the characteristics of "the minority obeys the majority" and "everyone is equal", in which "the minority obeys the majority" does not fully refer to the number of nodes, but can also be the computing power, the number of shares or other characteristic quantities that can be compared by computers. "Everyone is equal" means that when nodes meet the conditions, all nodes have the right to give priority to the consensus result, which is directly recognized by other nodes and may finally become the final consensus result. Bitcoin, for example, uses proof-of-work, and it is only possible to forge a non-existent record if it controls more than 51% of the network's accounting nodes.

When there are enough nodes joining the blockchain, this is basically impossible, thus eliminating the possibility of fraud.

4) Smart contracts, which are based on this trusted, immutable data and can automatically enforce some pre-defined rules and terms. Taking insurance as an example, if everyone's information (including medical information and risk information) is true and credible, it is easy to automate claims in some standardized insurance products.

At present, according to different application scenarios and user needs, blockchains can be roughly divided into three categories: public blockchain, private blockchain and consortium blockchain.

Among them, the highest degree of decentralization is the public chain. This kind of public blockchain, represented by Bitcoin and Ethereum, is not controlled by a third-party organization, and all people in the world can read the data records on the chain, participate in transactions, and compete for the right to record new blocks. The program developer has no right to interfere with the user, and each participant (i.e., node) is free to join and exit the network, and do as he wishes.

Private blockchains are the complete opposite, the write permission of the network is fully controlled by an organization or institution, and the data read permission is regulated by the organization, which is either open to the public or has a certain degree of access restrictions. In simple terms, it can be understood as a weakly centralized or multi-centralized system. Since the participating nodes are strictly limited and few; Compared with public chains, private chains have a relatively short time to reach consensus, faster transaction speeds, higher efficiency, and lower costs.

However, this type of blockchain is more suitable for internal use by specific institutions, such as Linux**.

The consortium chain is a blockchain between the public chain and the private chain, which can achieve "partial decentralization". Each node on the chain usually has a corresponding entity or organization; Participants join the network and form a coalition of stakeholders through authorization to jointly maintain the operation of the blockchain. To some extent, consortium chains also belong to the category of private chains, but the degree of privatization is different.

For this reason, it also has the characteristics of low cost and high efficiency, and is suitable for B2B transactions such as transactions and settlements between different entities.

In general, public chains have the lowest barrier to entry, while private chains and consortium chains are limited in terms of openness.

Professor Chen Chun, director of the Blockchain Research Center of Zhejiang University and academician of the Chinese Academy of Engineering, said in an interview that the alliance chain is more suitable for empowering economic construction because its supervision is relatively controllable. Chen Chun said that the public chain itself has the characteristics of decentralization, non-tampering, non-deletable, low cost, etc., if it is used to disseminate harmful information, it will have an adverse impact on the industrial layout and development of blockchain technology, and also bring great challenges to the regulatory authorities, but we should also support the development of public chain technology and participate in international competition.

Chen Chun also said in the interview that the alliance chain between the low-trust public chain and the single high-trust private chain is a more suitable choice, because the alliance chain only allows authorized nodes to join the network, while maintaining a certain openness, the real-name system and traceability characteristics improve the system trust problem. Chen Chun pointed out that there are four major trends in the development of blockchain supervision technology: the first is the tracking and visualization of blockchain nodes, the second is the penetrating supervision technology of the alliance chain, the third is the active discovery and detection technology of the public chain, and the fourth is the architecture and standard of the chain governance chain.

Now we commonly use Qi Dazhi e-wallets such as WeChat wallet and Alipay, monopolizing the field of mobile payment. The field of digital currency payment is occupied by blockchain wallets, and it is impossible for blockchain high-end wallets to be used in our daily life, so what is the difference between the two?

Let's start with what they have in common. Since they are all wallets, although they are used in different fields, their functions are still the same, such as using them to hold money, transfer money, and receive money. The most basic function is to store and manage currency, followed by transferring and receiving money.

So what are the differences between them?

Difference 1: Storage.

Ordinary wallets can only store fiat currency, while blockchain wallets store tokens issued using blockchain technology. A blockchain wallet is a software program or hardware device that stores cryptocurrency. It can't store all digital currencies or assets, because there are so many types of digital currencies, and the digital currencies stored in a wallet are determined by the developer.

Difference 2: Is it centralized?

Blockchain wallets are decentralized, and regular e-wallets are centralized. When using ordinary e-wallets, users put their assets on the platform for safekeeping, and the platform serves users to ensure the safety of users' funds to a certain extent. When using a blockchain wallet, the user keeps the assets by himself, and has absolute ownership of the assets if he owns the private key of the first package of money.

Difference 3: Is the data reversible?

The data of blockchain wallets is irreversible, and the data of ordinary wallets is reversible. In ordinary wallets such as Alipay due to operational errors, deception and other transfer behaviors, communicate with customer service about related matters, and after the review is completed, you can generally recover the funds that have been deceived or transferred by mistakes such as operation errors, but this is impossible in blockchain wallets, because once you confirm the transfer, there is no longer the possibility of recovery, and you must be cautious when using blockchain wallets.

Difference 4: Variety.

Due to the wide variety of digital currencies, there are also many types of blockchain wallets, which serve different digital currencies; Ordinary wallets are all for fiat currency, the type is relatively simple, and the state has become stricter in its supervision, which also ensures the safety of assets.

That's all for today's introduction to the similarities and differences between blockchain wallets and ordinary wallets. In general, blockchain wallets are used to store digital currency, ordinary wallets are used to store fiat currency, Alipay and WeChat wallets that we use daily are ordinary wallets, and GST wallets and cloud wallets that are the first blockchain are blockchain wallets, understand?

Blockchain is a term in the field of information technology, so what are the types of blockchain? Let's take a look at what types of block pickpocketing chains are? Tools Raw material blockchain method Step 1 The first type: public chain, like a public ledger that everyone keeps accounts together.

2. The public chain is open to anyone, everyone can participate, and the data is recorded by everyone, and the nature of decentralization is the strongest.

3 The second type: private chain, a bit like a private ledger belonging to an individual or company.

4. The private spring Wang Qiaoyou chain is only open to individual enterprises, and the efficiency will be much higher than that of the public chain.

5 The third type: the consortium chain, which is a bit like a consortium of multiple companies.

6. The public ledger and data used within the consortium chain are jointly maintained by the members within the consortium and are only open to members within the organization, and its degree of decentralization is moderate.