The first is to accumulate early seed users as soon as possible;

　　The second is the simultaneous advancement of technology development and community operation. According to the route design of most white papers, the Main net launch usually takes about 1 year.

　　Main net (Main net) is relative to Test net (Test net), Main net refers to the original and main network of Bitcoin transactions, and the Bitcoin circulating on it has real economic value. Test net is similar in function to Main net, mainly used for rapid development iteration of projects and early community participation.

　　Blockchain technology

　　Background: After the birth of Bitcoin, it was found that the technology was very advanced, and then the blockchain technology was discovered. Bitcoin and blockchain technology were discovered at the same time.

　　1.1 The purpose of the birth of Bitcoin:

　　①Currency transactions are recorded, that is, the ledger;

　　②Disadvantages of centralized institution accounting – tamperable; easy to overissue

　　Bitcoin solves the first problem: anti-tampering – hash function

　　1.2 Hash function (encryption method)

　　①Function: Converts any length of string into a fixed length (sha256) output. The output is also known as a hash value.

　　②Characteristics: It is very difficult to find two different x and y such that h(x)=h(y).

　　③Application: md5 file encryption

　　1.3 Blockchain

　　①Definition

　　Block: Divide the total ledger into blocks for storage
sports betting localThe latest plan
　　Blockchain: On each block, an additional block header is added. It records the hash value of the parent block. By storing the hash value of the parent block in each block, all blocks are connected in order to form a blockchain.

　　②How blockchain prevents transaction records from being tampered with

　　After forming the blockchain, tampering with any transaction will cause the hash value of the transaction block to be different from that of its child block, and the tampering will be discovered.

　　Even if you continue to tamper with the hash value in the sub-block header, it will cause the hash value of the sub-block to be different from that of the grandchild block, and the tampering will be discovered.

　　1.4 The essence of blockchain

　　①The essence of Bitcoin and blockchain: A visible big ledger for everyone, recording only transactions.

　　②Core technology: Through the cryptographic hash function + data structure, ensure that the ledger records cannot be tampered with.

　　③Core function: Create trust. Fiat currency relies on government credibility, while Bitcoin relies on technology.

　　1.5 How to trade

　　①To conduct transactions, you need an account and password, corresponding to the public key and private key

　　Private key: a sequence of 256-bit binary numbers, which can be obtained without application, even without a computer, by flipping a coin 256 times to generate the private key

　　The address is generated from the private key. The address cannot be reverse-engineered to obtain the private key.

　　The address is identity, representing the ID in the Bitcoin world.

　　After an address is generated, it can only be known to everyone after entering the blockchain ledger.

　　②Digital signature technology

　　The sign() function with Zhang San’s private key and transfer information: Zhang San transfers 10 yuan to Li Si = This transfer signature

　　Verify that verify(Zhang San’s address, transfer information: Zhang San transfers 10 yuan to Li Si, this transfer signature) = True

　　Zhang San signs this transaction using his private key through the sign() function.

　　Anyone can verify it through the verify() function to determine whether the signature is issued by Zhang San himself who holds Zhang San’s private key. If it returns true, it is false.

　　sign() and verify() are guaranteed by cryptography and cannot be cracked.

　　③Complete the transaction

　　Zhang San publishes the transfer information and signature on the entire network. Under the premise that there is a balance in the account, after verifying that the signature is true, it will be recorded in the blockchain ledger. Once recorded, Zhang San’s account will decrease by 10 yuan, and Li Si will increase by 10 yuan.

　　Support one-to-one, one-to-many, many-to-one, and many-to-many transaction methods.

　　In the Bitcoin world, the private key is everything!!!

　　1.6 Centralized accounting

　　①The advantages of centralized accounting:

　　a. It doesn’t matter which centralized accounting, you don’t have to worry too much

　　b. Centralized accounting has high efficiency

　　②The disadvantages of centralized accounting:

　　a Denial of Service attack

　　b Stop service after fatigue

　　Centralized institutions are vulnerable to attacks. For example, server and network destruction, embezzlement, legal termination, government intervention, and so on.

　　All attempts at secret currencies with centralized institutions in history have failed.

　　比特币解决第二个问题：如何去中心化

　　1.7去中心化记账

　　①去中心化：人人都可以记账。每个人都可以保留完整的账本。

　　任何人都可以下载开源程序，参与P2P网络，监听全世界发送的交易，成为记账节点，参与记账。

　　②去中心化记账流程

　　某人发起一笔交易后，向全网广播。

　　每个记账节点，持续监听、持续全网交易。收到一笔新交易，验证准确性后，将其放入交易池并继续向其它节点传播。

　　因为网络传播，同一时间不同记账节点的交一次不一定相同。

　　每隔10分钟，从所有记账节点当中，按照某种方式抽取1名，将其交易池作为下一个区块，并向全网广播。

　　其它节点根据最新的区块中的交易，删除自己交易池中已经被记录的交易，继续记账，等待下一次被选中。

　　③去中心化记账特点

　　每隔10分钟产生一个区块，但不是所有在这10分钟之内的交易都能记录。

　　获得记账权的记账节点，将得到50个比特币的奖励。每21万个区块（约4年）后，奖励减半。总量约2100万枚，预计2040年开采完。

　　记录一个区块的奖励，也是比特币唯一的发行方式。

　　④如何分配记账权：POW（proofofwork）方式

　　记账几点通过计算一下数学题，来争夺记账权。

　　找到某随即数，使得一下不等式成立：

　　除了从0开始遍历随机数碰运气之外，没有其它解法，解题的过程，又叫做挖矿。

　　谁先解对，谁就得到记账权。

　　某记账节点率先找到解，即向全网公布。其他节点验证无误之后，在新区块之后重新开始新一轮的计算。这个方式被称为POW。

　　⑤难度调整

　　每个区块产生的时间并不是正好10分钟

　　随着比特币发展，全网算力不算提升。

　　为了应对算力的变化，每隔2016个区块（大约2周），会加大或者减少难度，使得每个区块产生的平均时间是10分钟。

　　#欧易OKEx##比特币[超话]##lottery and How to find it #区块链中的每个区块中记录要经历哪些验证环节?

　　区块验证包括两个环节，即提议区块（由提议者建议）和证明区块（由证明者完结）。

　　再进一步解释一下吧。每个区块的验证者都是从一个很大的验证者调集中挑选出来的，一切验证者都需求在信标链中进行挂号才干成为验证者。验证者是经过随机数发生器进行随机挑选的，该随机数发生器便是RANDAO+VDF，而那些被选中的验证者们将组成一个委员会(committee)。

　　A detailed explanation of the blockchain consensus mechanism: POA

　　POA is the full name of proof of activity. It is not an independent consensus algorithm, but a mixed algorithm of POW and POS. Currently, onlychain, EUchain, and other chains have adopted the POA consensus mechanism.

　　The general process of the POA algorithm is as follows: each active node continuously performs hash calculations to find a block header with a hash value less than a specific value. The block header includes the previous block hash value, the local node address, block sequence number, and nonce value. When a node finds a block header that meets the conditions, it will broadcast this block header to the entire network. All active nodes receive the broadcast and perform verification. If the verification passes, the block header in the broadcast is used as the data source to export N random shareholders. All active nodes judge whether they are one of the lucky shareholders. If they are one of the first N-1 lucky shareholders, they also sign the above block header with their private key. And broadcast this signature on the entire network. If they are the Nth lucky shareholder, they use this block header to build a new block that includes as many transactions as possible, the signatures of the first N-1 lucky shareholders, and their own signature of the complete blockchain hash value. Then broadcast the signed complete node on the entire network. All active nodes perform verification after receiving the complete node. If the verification passes, it is considered that the node is a legitimate new block and is added to the blockchain.

　　If this block belongs to the longest chain, it is taken as the previous block, returning to the initial step. Otherwise, it is discarded. It is not difficult to find that the POA algorithm requires all N lucky ones to be online. Any lucky shareholder not online will cause the block to be discarded.

　　This is where the active proof comes from. The POA algorithm periodically counts the number of discarded blocks and adjusts the value of N accordingly. If there are a large number of discarded blocks, then reduce N, otherwise increase N.

　　The loss of blocks in the POA algorithm is a loss of computing power. In the POA algorithm, the transaction fees in the block are shared by the block publisher and n lucky shareholders.

　　The most important thing about the POA algorithm is that it can prevent non-powerful attackers. Non-powerful attackers refer to attackers with powerful algorithms but only holding a small amount of shares. In the POA algorithm, the POS part makes it very difficult for non-powerful attackers to get the opportunity to build blocks. We should not be able to carry out attacks effectively.

　　In the POA algorithm, lucky shareholders make profits through capital, which is equivalent to holding shares to receive dividends. This mechanism estimates that holding shares for a long time is beneficial for the preservation of digital assets and reducing fluctuations.

　　The POAstay public’s pow part controls the speed of generating new block headers through hash algorithm difficulty. It plays a role in stabilizing the network and preventing forks.

　　However, there is also a cost to obtain the above advantages, the power consumption brought by the PoW part, and the PoS part leads to the loss of new block headers and a higher probability, resulting in the waste of computing power. How to distinguish the validity of each block in the blockchain

　　In the book ‘Illustrated Blockchain’, there is such a paragraph:

　　Taking Bitcoin as an example, in the fifth section of the Bitcoin White Paper, Nakamoto says that the steps to execute the Bitcoin network are as follows:

　　New transactions are broadcast to the entire network;

　　Each node incorporates the received transaction messages into a block;

　　Each node tries to find a proof of work with sufficient difficulty in its own block;

　　When a node finds a proof of work, it is like broadcasting to the entire network;

　　Only when all transactions contained in the block are valid and not previously existed, will other nodes recognize the validity of the block;

　　Other nodes indicate that they accept the block, and the method of acceptance is to follow at the end of the block, creating a block to extend the chain, and taking the random hash value of the block as the random hash value of the new block.

　　Among the five points ‘and not previously existed’, this is not clear. How do other nodes verify that all transactions in the block are not previously existed? Do we have to extract each transaction in the block one by one and then compare it with all transactions in the entire blockchain one by one? If so, isn’t it very time-consuming? Blockchain入门必备108知识点

　　Author: Kong Lin

　　What is ‘Trapped’

　　Expected the price of the coin to rise, but the price of the coin fell after buying; or expected the price of the coin to fall, but the price of the coin rose after selling.

　　What is ‘Break the Lock’

　　After buying Bitcoin, the price of the coin fell, causing a temporary loss on the books, but after the price of the coin rose, it turned a loss into a profit.

　　What is ‘Missed the Bus’

　　After selling Bitcoin due to a bearish outlook, the price of the coin has continued to rise, and it was unable to buy in time, so it was unable to make a profit.

　　What is ‘Over-Bought’

　　The price of the coin has continued to rise to a certain height, the buyer’s strength is basically exhausted, and the price of the coin is about to fall.

　　What is ‘Over-Sold’

　　The price of the coin has continued to fall to a certain low point, the seller’s strength is basically exhausted, and the price of the coin is about to rise.

　　What is ‘Lure Bulls’online casino tutorial，We need you

　　The price of the coin has been consolidated for a long time, and the possibility of falling is relatively large. Most bears have sold Bitcoin, and suddenly the bears raise the price of the coin, tempting the bulls to believe that the price of the coin will rise, and then buy, resulting in the bears suppress the price of the coin, making the bulls trapped.

　　What is ‘Lure Bears’

　　After buying Bitcoin as a bull, deliberately depress the price of the coin, making the bears believe that the price of the coin will fall, and then sell out, resulting in falling into the trap set by the bulls.

　　What is NFT

　　The full name of NFT is ‘Non-Fungible Tokens’, which means non-fungible tokens. Simply put, it is a type of copyright proof that cannot be divided on the blockchain, mainly used for digital asset authorization, transfer, and differs from lottery and How to find it in that it is unique, indivisible, and essentially, a unique digital asset.

　　69.什么是元宇宙

　　元宇宙是一个虚拟时空间的集合，由一系列的增强现实（AR），虚拟现实（VR）和互联网（Internet）所组成，其中lottery and How to find it 承载着这个世界中价值转移的功能。

　　70.什么是DeFi

　　DeFi，全称为DecentralizedFinance，即“去中心化金融”或者“分布式金融”。“去中心化金融”，与传统中心化金融相对，指建立在开放的去中心化网络中的各类金融领域的应用，目标是建立一个多层面的金融系统，以区块链技术和密码货币为基础，重新创造并完善已有的金融体系

　　71.谁是中本聪？

　　72.比特币和Q币不一样

　　比特币是一种去中心化的数字资产，没有发行主体。Q币是由腾讯公司发行的电子货币，类似于电子积分，其实不是货币。Q币需要有中心化的发行机构，Q币因为腾讯公司的信用背书，才能被认可和使用。使用范围也局限在腾讯的游戏和服务中，Q币的价值完全基于人们对腾讯公司的信任。

　　比特币不通过中心化机构发行，但却能够得到全球的广泛认可，是因为比特币可以自证其信，比特币的发行和流通由全网矿工共同记账，不需要中心机构也能确保任何人都无法窜改账本。

　　73.矿机是什么？

　　以比特币为例，比特币矿机就是通过运行大量计算争夺记账权从而获得新生比特币奖励的专业设备，一般由挖矿芯片、散热片和风扇组成，只执行单一的计算程序，耗电量较大。挖矿实际是矿工之间比拼算力，拥有较多算力的矿工挖到比特币的概率更大。随着全网算力上涨，用传统的设备（CPU、GPU）挖到比特的难度越来越大，人们开发出专门用来挖矿的芯片。芯片是矿机最核心的零件。芯片运转的过程会产生大量的热，为了散热降温，比特币矿机一般配有散热片和风扇。用户在电脑上下载比特币挖矿软件，用该软件分配好每台矿机的任务，就可以开始挖矿了。每种币的算法不同，所需要的矿机也各不相同。

　　74.量化交易是什么？

　　量化交易，有时候也称自动化交易，是指以先进的数学模型替代人为的主观判断，极大地减少了投资者情绪波动的影响，避免在市场极度狂热或悲观的情况下做出非理性的投资决策。量化交易有很多种，包括跨平台搬砖、趋势交易、对冲等。跨平台搬砖是指，当不同目标平台价差达到一定金额，在价高的平台卖出，在价低的平台买入。

　　75. Over-the-counter trading of blockchain assets

　　Over-the-counter trading is also known as OTC trading. Users need to find trading counterparts themselves, without going through a matching transaction, and the transaction price is determined by negotiation between the two parties. The two parties can communicate fully through face-to-face negotiations or telephone communications and other methods.

　　76. What is a timestamp?

　　The blockchain ensures that each block is sequentially connected by timestamps. Timestamps make each piece of data on the blockchain have a time mark. Simply put, timestamps prove when and what happened on the blockchain, and anyone cannot alter them.

　　77. What is a blockchain fork?

　　Upgrading software in a centralized system is very simple, just click ‘update’ in the app store. However, in decentralized systems like blockchain, ‘upgrade’ is not that simple, and it may even cause a blockchain fork with a word. In simple terms, a fork refers to a divergence of opinions during the ‘upgrade’ of the blockchain, leading to a fork of the blockchain. Because there is no centralized institution, each code upgrade of digital assets like Bitcoin requires the unanimous recognition of the Bitcoin community. If the Bitcoin community cannot reach a consensus, the blockchain is likely to fork.

　　78. Soft fork and hard fork

　　Hard fork refers to the situation where old nodes reject blocks created by new nodes when the Bitcoin code changes. Blocks that do not comply with the original rules are ignored, and miners will create new blocks after the last block they verified, following the original rules. Soft fork refers to the situation where old nodes are not aware that the Bitcoin code has changed and continue to accept blocks created by new nodes. Miners may work on blocks that they have not fully understood or verified. Both soft fork and hard fork are ‘backward compatible’, which ensures that new nodes can validate the blockchain from the beginning. Backward compatibility refers to the ability of new software to accept data or code generated by old software, for example, Windows 10 can run applications from Windows XP. Soft fork can also be ‘forward compatible’.

　　79. Classification and application of blockchain projects

　　From the perspective of mainstream blockchain projects at present, blockchain projects mainly fall into four categories: the first category: currency; the second category: platform; the third category: application; the fourth category: asset tokenization.

　　80. USDT equivalent to the US dollar

　　USDT is a token launched by Tether Limited, which is equivalent to the US dollar (USD). 1USDT is equal to 1 dollar, and users can exchange USDT for USD at a 1:1 ratio at any time. Tether Limited implements a 1:1 reserve guarantee system, meaning that each USDT token is backed by 1 dollar in reserves, supporting the stability of the USDT price. The price of a certain digital asset in USDT is also equivalent to its price in US dollars (USD).

　　81.山寨币和竞争币

　　山寨币是指以比特币代码为模板，对其底层技术区块链进行了一些修改的区块链资产，其中有技术性创新或改进的又称为竞争币。因为比特币代码开源，导致比特币的抄袭成本很低，甚至只需复制比特币的代码，修改一些参数，便可以生成一条全新的区块链。

　　82.三大交易所

　　币安

　　Okex

　　火币

　　83.行情软件

　　Mytoken

　　非小号

　　CMC

　　84.资讯网站

　　巴比特

　　金色财经

　　币世界快讯

　　85.区块链浏览器

　　BTC

　　ETH

　　BCH

　　LTC

　　ETC

　　86.钱包

　　Imtoken

　　比特派

　　87.去中心化交易所

　　uniswap

　　88.NFT交易所

　　Opensea

　　SuperRare

　　89.梯子

　　自备，购买靠谱梯子

　　90.平台币

　　平台发行的lottery and How to find it ，用于抵扣手续费，交易等

　　91.牛市、熊市

　　牛市：上涨行情

　　熊市：下跌行情

　　92.区块链1.0

　　基于分布式账本的货币交易体系，代表为比特币

　　93.区块链2.0

　　以太坊（智能合约）为代表的合同区块链技术为2.0

　　94.区块链3.0

　　智能化物联网时代，超出金融领域，为各种行业提供去中心化解决方案

　　95.智能合约

　　智能合约，SmartContract，是一种旨在以信息化方式传播、验证或执行合同的计算机协议，简单说，提前定好电子合约，一旦双方确认，合同自动执行。

　　96.什么是通证？

　　通证经济就是以Token为唯一参考标准的经济体系，也就是说相当于通行证，你拥有Token,就拥有权益，就拥有发言权。

　　大数据是生产资料，AI是新的生产力，区块链是新的生产关系。大数据指无法在一定时间范围内用常规软件工具进行捕捉、管理和处理的数据集合，是需要新处理模式才能具有更强的决策力、洞察发现力和流程优化能力的海量、高增长率和多样化的信息资产。简单理解为，大数据就是长期积累的海量数据，短期无法获取。区块链可以作为大数据的获取方式，但无法取代大数据。大数据只是作为在区块链运行的介质，没有绝对的技术性能，所以两者不能混淆。(生产关系简单理解就是劳动交换和消费关系，核心在于生产力，生产力核心在于生产工具)

　　ICO, Initial Coin Offering, the first public token offering, is crowdfunding in the blockchain lottery and How to find it industry. It was the most popular topic and investment trend in 2017, and the national 9.4 regulation scheme was issued. When talking about ICO, people will think of IPO, and the two have essential differences.

　　99. lottery and How to find it Five Characteristics

　　First feature: decentralized

　　Second feature: has open-source code

　　Third feature: has an independent electronic wallet

　　Fourth feature: constant issuance

　　Fifth feature: can be globally circulated

　　100. What is decentralization?

　　Without an issuing party, it does not belong to any institution or country, and is designed, developed, and stored on the Internet by Internet network experts, and is publicly issued currency.

　　100. What is measured (scarcity)?

　　Once the total supply is set, it is permanently fixed and cannot be changed or arbitrarily over-issued, and can be supervised globally by the Internet. Although the mining and mining difficulty change over time, the longer the time, the greater the mining difficulty, and the less the currency mined, thus having scarcity.

　　101. What is open-source code?

　　Composed of letters and numbers, stored on the Internet, anyone can check the source code it designs, everyone can participate, mine, and it is globally open.

　　102. What is anonymous trading? Exclusive private wallet?

　　Everyone can register and download a wallet online without real-name authentication, which is completely composed of encrypted digital codes, allowing for instant point-to-point sending and trading globally without the need for banks or any institutions. No one can trace or query it without the authorized permission of the owner.

　　Contract trading refers to the agreement between buyers and sellers to trade a certain amount of assets at a specified price at a future time. The trading objects of contract trading are standardized contracts formulated by the exchange, which stipulates the types of goods, trading time, quantity, and other standardized information. Contracts represent the rights and obligations of both parties.

　　105. lottery and How to find it Industry Chain

　　From chip manufacturers to mining machine manufacturers, agents, mining to the exchange, individual traders trading coins

　　106. Who is Kuanglin?

　　Kuanglin: lottery and How to find it, a value investor

　　Investment style: stable

　　107. Kuanglin Investment Strategy

　　Combining long and short, mainly value investment, avoiding contracts and short-term trading

　　Reasonable layout, scientific operation, stable and conservative, making money through cycles

　　108. Empty forest?

　　Welcome to the community of token holders, let’s work together for development

　　In blockchain technology, the main network refers to the core part of the blockchain network. Generally speaking, the main network refers to the most important and fundamental system-level network in the entire blockchain system. The main network can support the infrastructure of the entire blockchain network, including node management, transaction verification, data storage, and distributed computing, among others. Generally, the main network is designed, developed, and maintained by a group of professional development teams, and its importance is self-evident.

　　The role and significance of the main network lie in supporting the operation of the entire blockchain system. By providing stable performance and reliable data exchange channels, it ensures the normal operation and development of the blockchain network and realizes the decentralization and distribution of data exchange and management processes. At the same time, the main network is also one of the important symbols of the entire blockchain system. More and more blockchain projects choose to issue and run their own lottery and How to find it and smart contracts on it.

　　In the field of blockchain commercial applications, the importance of the main network is becoming more and more prominent. At present, many well-known blockchain projects are rapidly developing their own main networks, including Bitcoin, Ethereum, EOS, and TRON, among others. At the same time, various blockchain projects are actively developing and improving their own main networks to ensure the development and application of blockchain technology. Therefore, how to choose a safe and reliable main network has also become a concern for many investors and entrepreneurs.

　　Have you often heard the term ‘main network’ in the lottery and How to find it circle? For example, the popular core coin recently went online. Do you know what the main network means? Why do you need to go online? Let’s take a look with the editor below.

　　What does main network mean

　　The full name of the main network is Main net, which means the officially launched, independently operating blockchain network. Simply put, it refers to the public chain, that is, the underlying infrastructure of this project. The transaction behavior on the network is recognized by all members of the community. When your main network goes online, it means that the underlying infrastructure has been built and can be used by developers on the network.

　　Whether the main network upgrade is a positive or negative factor

　　Whether it is a positive or negative factor is not easy to say. It needs to be based on the current market situation, and the development path of each token is different. Therefore, when we look at this issue, we need to consider the current needs and view it accordingly.

　　What is main network upgrade

　　Main network upgrade is necessary for the development of the project. Generally, main network upgrade will bring an improvement in the performance of the entire main network chain, a reduction in GAS fees, and an increase in computing power; of course, if there are technical bugs, problems may also be solved through upgrades/maintenance.

　　The process of using ERC20 tokens to exchange for tokens on another blockchain is usually called main network token upgrade.

　　The main network token upgrade is necessary for the development of the project. Although many tokens are issued on the Ethereum blockchain, they only use the Ethereum blockchain as a transfer base, and their purpose is to raise funds and develop a completely independent blockchain.