区块链的币种,区块链有几种币

近年来，区块链技术发展迅速，随之而来的是各种币种的出现。目前，区块链有许多种币种，比特币、以太坊、柚子、莱特币等等。今天，我们就来探讨一下区块链的三种币种：比特币、以太坊、柚子。

比特币：比特币是一种去中心化的电子货币，是一种基于密码学的货币。它的发行是通过数字加密技术实现的，并且它的发行量是有限的。比特币是由中本聪在2008年发明的，是当前最流行的加密货币。比特币的价格波动性也很大，它的价格会随着市场的变化而变化，有时会大幅度上涨，有时也会大幅度下跌。

以太坊：以太坊是一种去中心化的开放式的区块链技术平台，它可以用来开发和部署去中心化的应用程序。以太坊的发行量是有限的，而且它的价格也是不断变化的，它的价格也会随着市场的变化而变化。以太坊也是一种加密货币，它可以用来支付交易费用，也可以用来支付交易手续费。

柚子：柚子是一种去中心化的加密货币，它是由中本聪发明的，是一种基于区块链技术的加密货币。柚子的发行量是有限的，而且它的价格也是不断变化的，它的价格也会随着市场的变化而变化。柚子也是一种加密货币，它可以用来支付交易费用，也可以用来支付交易手续费。柚子还可以用来支持去中心化的应用程序，以及创建去中心化的经济系统。

总的来说，比特币、以太坊、柚子都是区块链技术的重要币种，它们都有自己独特的优势和功能，也都受到了市场的青睐。不管是投资者还是开发者都可以根据自己的需求来选择这三种币种中的一种，以获得最大的收益。

㈠ Classification of blockchains

Currently blockchains are divided into three categories, among which hybrid blockchains and private blockchains can be regarded as: generalized private chains, public Blockchain public blockchain. This means that any individual or group in the world can send transactions, the transactions can be effectively confirmed by the blockchain, and anyone can participate in its consensus process. Public blockchain is currently the earliest blockchain and the most widely used blockchain. Each virtual digital currency of the Bitcoin series is based on a public blockchain, and there is only one blockchain in the world corresponding to this currency.
Extended information
1. Industrial blockchain industry blockchains: multiple pre-selected nodes in the group are designated as bookkeepers, and the generation of each block is jointly decided by all pre-selected nodes (pre-selected nodes participate in the consensus process), others Access nodes can participate in transactions but do not interfere with the accounting process (essentially, it is managed bookkeeping, but it becomes distributed bookkeeping). How many pre-selected nodes and how to determine the bookkeeper for each block become the main risk points of the blockchain ), anyone else can make limited queries through the blockchain’s open API. Private Blockchain Private Blockchain ((privateblockchains)): Only the general ledger technology of the blockchain is used for accounting. It can be a blockchain with exclusive written permission from a company or individual. This chain is not much different from other distributed storage solutions. At present (December 2015), conservative giants (traditional finance) want to try private blockchains, while the applications of public chains, such as Bitcoin, have been industrialized, and the application products of private chains are still being explored. Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms. Blockchain is an important concept of Bitcoin. Essentially, it is a decentralized database.
2. At the same time, as the underlying technology of Bitcoin, it is a series of data blocks associated with encryption methods. Each data block contains a batch of Bitcoin network transaction information, verify the validity of its information (anti-counterfeiting) and generate the next block. In fact, the word blockchain does not appear in the original English Bitcoin white paper, but appears in blockchain. In the earliest Bitcoin white paper, blockchain was translated as blockchain. This is the time when the Chinese word "blockchain" first appeared. The Cyberspace Administration of China issued the "Blockchain Information Service Management Regulations" on January 10, 2019, which came into effect on February 15, 2019. In a narrow sense, a blockchain is a chained data structure that combines data blocks in chronological order, and a tamper-proof and forgery-proof distributed ledger guaranteed by cryptography. Broadly speaking, blockchain technology is a new distributed infrastructure and computing method that uses blockchain data structures to verify and store data, distributed node consensus algorithms to generate and update data, and cryptography to Ensure the security of data transmission and access, using smart contracts composed of automated script code to program and operate data.

㈡ What are the classifications of blockchain projects

The current blockchain projects are roughly divided into four categories: currency, platform, application, and asset monetization.

Mainly used as a medium of exchange for blockchain assets, it is a general equivalent, similar to the previous gold. Applications belonging to this category include Bitcoin, Litecoin, etc.

2. Platform category

Refers to the establishment of technical platforms to meet the development of various blockchain applications. The major public chain projects now belong to TRON, EOS, and Ethereum and other categories.

3. Application category

refers to applications that have their own applications in various fields such as finance, games, logistics, property rights protection, etc. It is developing the fastest and may have applications in various fields in the future. It has great application prospects. Specific projects include Ripple and other projects.

4. Asset tokenization

.

Refers to the block game chain mapping of physical assets. That is, the link to physical assets. Typical representatives are USDT, which is benchmarked against the US dollar, Digix, which is benchmarked against gold, and Dao.

㈢ What are the classifications and applications of blockchain projects

Judging from the current mainstream blockchain projects, blockchain projects are mainly divided into four categories: Category 1: Currency; Category 2: Platform; Category 3: Application; Category 4: Asset Tokenization.

Coins mainly serve as the "medium of exchange" in the field of blockchain assets. The medium of exchange refers to general equivalents, such as gold and silver notes in the past. (Trade blockchain assets on "Bihui Exchange")

Platform projects refer to the establishment of technology platforms to meet the development of various blockchain applications, which can reduce the cost of developing applications on the blockchain. threshold.

The scope of application projects is relatively wide, covering many fields such as finance, social networking, games, property rights protection, etc. It is also the fastest growing field of blockchain assets at present.

The asset tokenization project refers to the blockchain mapping of physical assets, that is, the physical assets are put on the chain. Currently, there are no more than 10 varieties.

01 Currency

The first category is currency projects, which are also the earliest blockchain projects. Currency projects mainly include projects such as Bitcoin and Litecoin. In addition, there is another type of asset that has the characteristics of anonymity. Its main functions include realizing payment while protecting the privacy of both parties. The well-known ones include Dash, Monero and Big Zero that use zero-knowledge proof. Coin (Zcash), etc. Currencies mainly serve as the "medium of exchange" in the blockchain asset field. The medium of exchange is the general equivalent that you use to exchange for goods. For example, in the past, gold, silver, and banknotes could be used as media of exchange. There are currently more than 2,100 types of digital assets in the world, and the number of currency blockchain projects has grown rapidly recently. As of June 2018, Bitcoin still has the largest market value.

02 Platform Category

The second category is platform blockchain projects. The main function of platform blockchain projects is to establish a technology platform and meet the needs ofMeet the technical requirements required for the development of various blockchain applications; simply put, platform applications allow developers to directly issue digital assets on the blockchain, write smart contracts, etc. A smart contract is a computer program that runs on a blockchain database and can be automatically executed under conditions set by its source code.

For example, if you develop a smart contract based on a house rental agreement on the blockchain, when the owner receives the rent, it will trigger automatic execution and give the apartment's security key to the tenant.

The main function of platform blockchain projects is to establish an underlying technology platform to allow developers to develop applications on the underlying technology platform. A considerable number of platforms are still under development. As of June 2018 , the one with the largest market value is Ethereum.

03 Application Category

The third category is application blockchain projects. Application projects are developed based on blockchain development platforms (such as Ethereum) and can solve various problems in the real economy. Blockchain projects that address many issues in the field.

For example, the blockchain-based prediction platform Augur, the blockchain-based computing power trading platform Golem, the blockchain-based luxury traceability platform VeChain, and the blockchain-based asset exchange and transfer services OmiseGo. Using blockchain technology, these projects can better solve trust issues, cross-border circulation and other issues. At the same time, using smart contracts and tokens on the blockchain, automatic execution can be better realized, greatly improving the efficiency of social and economic activities. efficiency. The scope of applied blockchain projects is relatively wide, covering many fields such as finance, social networking, games, property rights protection, etc. It is also the field where the market value of blockchain projects is increasing the fastest.

04 Asset Tokenization

The fourth category is asset tokenization blockchain projects. Asset tokenization refers to linking blockchain assets to physical assets such as gold and U.S. dollars. , is a blockchain mapping of physical assets. As of February 2018, there are no more than 10 varieties. The more typical representatives are USDT, which is benchmarked against the US dollar, and Digix Dao, which is benchmarked against gold. Each DigixDAO token represents 1 gram of London gold. Silver Market Association certified gold. Asset tokenization has the advantages of convenient transactions and safekeeping. First, asset tokenization makes transactions easier. Because blockchain assets can be split, they have better liquidity.

For example, currently the real estate needs to be transferred as a whole. If the real estate can be tokenized, it can be purchased in pieces, making transactions more convenient. Secondly, tokenization of physical assets is more conducive to safekeeping. In physical transactions such as gold, it is easy to cause wear and tear and cause losses. However, after tokenization of physical assets, there is no need for physical transfer, which is more conducive to the custody of physical assets.

㈣ What are the classifications of blockchain and what is the structure of the blockchain?

The concept of blockchain has been quite popular recently. It comes from Bitcoin and so on. The implementation of cryptocurrency, but this technology has been gradually used in various fields. So do you know what the classifications of blockchain are? Blockchain compositionWhat is the structure? Let’s follow us to find out more.
What are the classifications of blockchain?
1. Public Blockchains (PublicBlockChains)
Public Blockchain means: any individual or group in the world can send transactions, and the transactions can be effectively confirmed by the blockchain, and anyone can participate its consensus process. The public blockchain is the earliest blockchain, and it is also the most widely used blockchain at present. The virtual digital currencies of all major bitcoins series are based on the public blockchain. There is one and only one corresponding to this currency in the world. Blockchain.
2. Consortium (Industry) Blockchain (ConsortiumBlockChains)
Industry Blockchain: Multiple preselected nodes are designated within a certain group as bookkeepers, and the generation of each block is jointly performed by all preselected nodes. Decision (pre-selected nodes participate in the consensus process), other access nodes can participate in transactions, but do not participate in the accounting process (essentially still managed accounting, but become distributed accounting, how many slag points are pre-selected, how to decide each The bookkeeper of each block becomes the main risk point of the blockchain), and anyone else can conduct limited queries through the open API of the blockchain.
3. Private Blockchain (privateBlockChains)
Private Blockchain: Only uses the general ledger technology of the blockchain for accounting. It can be a company or an individual, and has exclusive access to the writing of the blockchain. With access permissions, this chain is not much different from other distributed storage solutions. At present (Dec2015), conservative giants (traditional finance) want to experiment with private blockchains, while public chain applications such as Bitcoin have been industrialized, and private chain application products are still being explored.
4. Sidechain (Sidechain)
Sidechain is a blockchain used to confirm data from other blockchains. Through the two-way peg (TwoWayPeg) mechanism, various assets such as Bitcoin and Ripple coins can be Transfers are realized on different blockchains at a certain exchange rate.
What is the structure of blockchain?
1. Basic network layer: The basic network layer consists of a data layer and a network layer. The data layer includes underlying data blocks and related data encryption and timestamp technologies; the network layer includes distributed networking mechanisms, Data dissemination mechanism and data verification mechanism, etc.
2. Intermediate protocol layer: The intermediate protocol layer consists of a consensus layer, an incentive layer, and a contract layer. The consensus layer mainly includes various consensus algorithms of network nodes; the incentive layer integrates economic factors into the blockchain technology system. , mainly including the issuance mechanism and distribution mechanism of economic incentives; the contract layer mainly includes various scripts, algorithms and smart contracts, which is the basis of the programmable features of the blockchain.
3. Extension layer: This layer is similar to a computer driver and is designed to make blockchain products more practical. There are currently two categories. One is various trading markets, which are important channels for exchanging fiat currencies for cryptocurrency. They are simple to implement, get money quickly, and have low costs, but the risks are also high.big. The second is the expansion implementation in a certain direction. For example, based on the Yishu side chain, it can provide customized services for third-party publishing organizations, forum websites and other content producers.
4. Application service layer: As the most important link in the blockchain industry chain, the application service layer includes various application scenarios and cases of blockchain, including programmable currency, programmable finance, and programmable society.
The above are the blockchain classifications brought to you by the editor? What is the structure of blockchain? all content.

㈤ What is a blockchain stablecoin and what are the main stablecoins?

In the blockchain world, a currency system that is mapped to the real world has been established. The currency in this system , we will call it stablecoins (StableCoins). A stablecoin is a cryptocurrency that is collateralized by the value of an underlying asset. By mortgaging assets, the value of the token is anchored and the value of the token becomes stable.

According to the issuance method, stablecoins are generally divided into four types:

1. Stablecoins issued with collateralized legal currency
USDT, USDC, and Tether (USDT) is a token issued by a financial institution and has a 1:1 right to exchange for the U.S. dollar. Tether (USDT) is launched by Tether, and USDC is issued by Circle and Coinbase. Both tokens claim to have a 100% reserve ratio as a reflection of the real-world U.S. dollar. They are currently the most widely used in the blockchain and are also the stablecoins with the largest market value.

2. Stablecoins minted with mortgaged digital assets
Dai is a decentralized over-collateralized stablecoin established by MAKER. It is minted by mortgaging some assets. Its mortgaged assets It is an asset that MAKER has determined can be mortgaged, such as ETH, BAT, etc., and if recognized by the major community, it can be mortgaged and minted to bring out Dai. Note that this is over-collateralization. For example, if we mortgage $150 of ETH into the Dai system, we can only obtain Dai worth $100.

How does it ensure that Dai is exchanged for USD 1:1? When Dai is lower than the mortgage line, liquidation will be triggered. For example, when ETH falls to $120, the liquidation line will be triggered. At this time, the MAKER system will auction ETH on the market, and the Dai obtained from the auction will be used for destruction. In this way This maintains the dynamic balance of the entire system and maintains the stability of Dai as a dollar value.

pUSD is a USD-bound stablecoin issued by the Mixin project team using BTC as collateral. The principle is similar to Dai. Because the mortgage rate is 200% and the issuance is decentralized, the collateral is co-managed by multiple teams and multi-signatures, so the risk is lower than stablecoins issued by centralized companies.

3. Algorithmic Stablecoin 1.0
Ampleforth (AMPL) has no mortgage assets and no credit endorsement by the main body. It relies purely on algorithms to achieve fluctuations around the anchored price. The anchored price of AMPL is the US dollar in 2019, which will rise and fall with the CPI within a certain range. Within, when it is higher than the anchor price, it will trigger additional issuance and send new AMPL to all AMPL addresses. When it is lower than the threshold, such as lower than 0.95, deflation will be triggered, and all AMPL addresses will be affected. Deflationary effects.

4. Algorithmic Stablecoins 2.0 and 3.0
Basis, an extension of AMPL, uses the rebase (can be understood as token supply rebalancing) mechanism and has the characteristics of separation of powers. , there are some mechanisms to solve the problem of AMPL death spiral.

Advantages of stablecoins:
First, it provides a deposit and withdrawal channel between legal currency and cryptocurrency, which is also the most important application scenario. Affected by policies, general exchanges do not support direct trading of cryptocurrencies with legal currency (RMB/USD, etc.). Currently, mainstream exchanges with legal currency transactions support the exchange of RMB and USDT. After users purchase USDT through RMB, they can use USDT to purchase other cryptocurrencies. currency.

The second is to combat the risk of falling traditional cryptocurrencies. As mentioned above, the birth of stablecoins stems from this, so it naturally has the advantage of stability. Since the currency price is stable, it can be applied It is no different from common legal currency in daily payment and transaction scenarios.

Third, unlike ordinary cryptocurrencies, stablecoins have a value basis because they have mortgage assets behind them.

Fourth, it can provide sufficient liquidity for the exchange. Compared with other mainstream markets, cryptocurrency is still a niche market. The birth of stablecoins helps attract large-scale capital entry.

Disadvantages of stablecoins:
Centralized issuance leads to opaque mortgage assets, such as USDT, which is rumored to be subject to thunder every day. The decentralized issuance method of mortgage cryptocurrency also carries the risk of significant fluctuations in the price of collateral. Therefore, stablecoins still have a long way to go in the future.

㈥ Blockchain, 4 types, how much do you know

——Hello, I am mentality, focusing on sharing my understanding of blockchain and investment thinking. hope this helps.

Based on different usage requirements and scenarios, blockchain is divided into 4 types: public chain, alliance chain, private chain and hybrid chain.

1. Public chain

Public chain means that anyone at any node in the world, at any geographical location, can enter the system to read data, send transactions, and compete. Blockchain that participates in consensus such as accounting. No institution or individual can tamper with thedata, so the public chain is completely decentralized.

Bitcoin and Ethereum are both representatives of public chains. Public chains generally encourage participants to compete for accounting (i.e. mining) by issuing tokens to ensure data security and consensus updates.

Bitcoin generates one block every 10 minutes on average, and its POW mechanism is difficult to shorten the block time. The POS mechanism can shorten the block time relatively speaking, but it is more likely to cause forks. So the transaction needs to wait for more confirmations before it is considered safe.

It is generally believed that a block in Bitcoin is secure enough after 6 confirmations, which takes about an hour. Such a confirmation speed is difficult to meet commercial-level applications. Therefore, public chains such as ETH and EOS that support more writing speeds are constantly developing.

2. Alliance chain

Alliance chain refers to a blockchain that is jointly participated and managed by several institutions, with each institution running N nodes.

The data of the alliance chain only allows different institutions in the system to read, write and trade. The PKI-based identity management system transactions or proposals are initiated through digital certificates and are verified by the joint signatures of the participants. A consensus is reached, so there is no need for proof of work (POW), and there is no digital currency (token), which improves the efficiency of transaction completion and saves a lot of computing costs (computing hardware investment and electricity energy consumption).

Normally, nodes participating in the alliance chain will be divided into different read and write permissions, which can support more than 1,000 data writes per second.

3. Private chain

Private chain is completely decentralized unlike public chain. The access rights of private chain are controlled by an organization, and the qualification of each node to participate is controlled by the organization. Authorization control.

Since the participating nodes are limited and controllable, private chains often have fast processing speeds and can support more than 1,000 data writes per second, while reducing the transaction costs of each internal node.

Nodes can participate under real names and therefore have financial attributes to confirm identity. The value of the private chain is mainly to provide a safe, traceable, non-tamperable, and automatically executed computing platform that can prevent both internal and external security attacks or tampering of data, which is difficult to achieve in traditional systems.

The application scenarios of private chains are generally within enterprises, such as inventory management of branches, summary statistics of data from various places, etc. It can also be used in areas that can be supervised by the public, such as government budgeting and execution. Large financial groups are also currently inclined to use private chain technology.

4. Hybrid chain

When the respective advantages of public and private chains are combined, a hybrid chain will appear. The development of hybrid chains is difficult, but the prospects are broad.

In the future market, there will definitely be giant companies that develop underlying technologies and protocols. These giant companies will set up public chains, private chains or alliance chains for different purposes, based on different needs for performance, security and application scenarios. Then graft applications from different industries. For example, a communication public chain that supports high concurrency, a payment alliance chain that focuses on security, etc.

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㈦ What are the currency projects in blockchain projects?

The first category is currency projects, which are also the earliest blockchain projects. Currency projects mainly include projects such as Bitcoin and Litecoin. In addition, there is another type of asset that has the characteristics of anonymity. Its main functions include realizing payment while protecting the privacy of both parties. The well-known ones include Dash, Monero and Big Zero that use zero-knowledge proof. Coin (Zcash), etc. Currencies mainly serve as the "medium of exchange" in the blockchain asset field. The medium of exchange is the general equivalent that you use to exchange for goods. For example, in the past, gold, silver, and banknotes could be used as media of exchange. Currently, there are more than 1,000 types of digital assets in the world, and the number of currency blockchain projects is not growing rapidly. As of January 2018, Bitcoin still has the largest market value. Everyone is already familiar with Bitcoin. In the next few episodes of Huo Xiaobi, we will introduce Litecoin, NEM, Dash, Monero, and Zcash in detail.

㈧ There are several classifications of blockchain

1. Decentralization
Due to the use of distributed computing and storage, there is no centralized hardware or management organization, and any The rights and obligations of nodes are equal, and the data blocks in the system are jointly maintained by nodes with maintenance functions in the entire system.
2. Openness
The system is open. In addition to the private information of the transaction parties being encrypted, the blockchain data is open to everyone, and anyone can query the blockchain through the public interface. Data and development related applications, so the entire system information is highly transparent.
3. Autonomy
Blockchain adopts consensus-based specifications and protocols (such as a set of open and transparent algorithms) to enable all nodes in the entire system to exchange data freely and securely in a trustless environment. , so that trust in "people" is changed to trust in machines, and any human intervention has no effect.
4. Anonymity
Since the exchange between nodes follows a fixed algorithm, the data interaction does not require trust (the program rules in the blockchain will judge whether the activity is valid by itself), so the counterparty does not need to Making the other party trust you by disclosing your identity is very helpful for the accumulation of credit.
Outstanding advantages:
Information cannot be tampered
Once the information is verified and added to the blockchain, it will be stored permanently unless more than 51% of the system can be controlled at the same timeNode, otherwise modifications to the database on a single node will be invalid, so the data stability and reliability of the blockchain are extremely high.
(8) What coins are blockchains divided into? Further reading:
Blockchain originated from Bitcoin, two weeks after the collapse of Lehman Brothers, which marked the starting point of the last financial crisis, on November 1, 2008. , a person claiming to be Satoshi Nakamoto published the article "Bitcoin: A Peer-to-Peer Electronic Cash System", which elaborated on the electronic cash system based on P2P network technology, encryption technology, timestamp technology, blockchain technology, etc. The architectural concept of the cash system, which marks the birth of Bitcoin.
Two months later, the theory came into practice, and on January 3, 2009, the first Bitcoin genesis block with serial number 0 was born. A few days later, block number 1 appeared on January 9, 2009, and was connected to the genesis block number 0 to form a chain, marking the birth of the blockchain.
In recent years, the world's attitude towards Bitcoin has been ups and downs, but blockchain technology, one of the underlying technologies of Bitcoin, has received increasing attention. In the formation process of Bitcoin, blocks are storage units one by one, recording all communication information of each block node within a certain period of time.
The links between each block are realized through random hashing (also called hash algorithm). The latter block contains the hash value of the previous block. With the expansion of information exchange, one block and Blocks are continued one after another, and the result is called a blockchain [3].