区块链 我的世界,mcf区块链系统

近年来，区块链技术和我的世界游戏均受到了广泛的关注。而MCF区块链系统作为一种新型的数字资产管理平台，为我的世界游戏的发展提供了更多的可能性。今天，我们就来聊聊MCF区块链系统拓展的三个关键词：去中心化、智能合约和游戏经济。

去中心化

去中心化是区块链技术的核心概念，它是指没有中央管理机构的系统，也就是说，所有的节点都是平等的，没有一个节点有特权。MCF区块链系统采用了去中心化的模式，它把比特币、以太坊等主流区块链资产整合在一起，让游戏玩家可以轻松获取这些资产，从而更好地参与到游戏中。

智能合约

智能合约是区块链技术的另一个重要概念，它可以让双方在不受外界影响的情况下进行交易，而且交易过程中的所有信息都可以被追溯，从而让交易双方都可以放心。MCF区块链系统采用了智能合约技术，可以让玩家轻松实现游戏物品的购买和交易，从而更好地参与到游戏中。

游戏经济

游戏经济是指游戏中的虚拟货币、虚拟物品和游戏服务等经济活动。MCF区块链系统支持游戏经济，它可以让玩家通过游戏获得实物和数字货币，这些数字货币可以用来购买游戏中的物品，也可以转移到其他区块链系统中，从而实现财富的流动。

以上就是关于MCF区块链系统拓展的三个关键词：去中心化、智能合约和游戏经济的介绍。MCF区块链系统让我们的游戏生活更加可靠、更加安全，让我们可以更好地参与到游戏经济中，获得更多的回报。

请查看相关英文文档

① Is there a computer version of Shenzhen’s blockchain electronic invoice?

Yes.
The Shenzhen Taxation Bureau has teamed up with Tencent Blockchain and WeChat Pay to launch a fast version of blockchain electronic invoices. Enterprises can register and activate blockchain electronic invoices in as little as 30 minutes.
In response to the invoice shortage and contactless service needs faced by enterprises, the Shenzhen Taxation Bureau teamed up with Tencent Blockchain and WeChat Pay to develop and launch a fast version of blockchain electronic invoices. Quickly go to the enterprise's industrial and commercial registration to directly grant the qualification to use blockchain electronic invoices, enabling invoicing to be issued immediately after opening.

② How to enter Yunnan Blockchain Merchant via computer

1. Enter the Yunnan Blockchain Merchant Platform, register immediately and fill in the registration information (note: the initial password confirmation password is the registrant’s For settings, you can ask the registrant, and the registration code does not need to be filled in).
2. Check I have carefully read and agreed to the agreement, click Register, return to the home page and enter your password to log in.

③ Yunnan Province Blockchain Electronic Invoice Operation Guide

In order to implement the series of work deployments of the State Administration of Taxation on the reform of "delegation, regulation and services", the Provincial Party Committee and the Provincial Government's "Digital Yunnan" In accordance with the construction requirements, the Yunnan Provincial Taxation Bureau is vigorously carrying out the promotion of blockchain electronic invoices around "one platform, one industry, one town, two industries, and two types of invoices". Today let’s learn the operation of blockchain electronic invoices! Part 1 Blockchain Merchant Platform Invoicing Initialization Preparation Registration Log in to Yunnan Blockchain Merchant Platform yunnan-cloud.wetax.com.cn, submit relevant registration information, and complete registration . Please complete the application at the Yunnan Tax Bureau before registering on the merchant platform. To log in, merchants use the tax ID or mobile phone number they filled in when registering on the platform. After entering the login page, they must first sign the contract. After successful signing, they can start using it. Contract Signing Users who log in to the merchant platform for the first time need to complete the contract signing and enter the merchant platform after signing. Just confirm the signature, and you can start using it after the signature is successful. Maintenance and maintenance of invoicing equipment operation path: equipment coding - invoicing equipment - binding Yunnan blockchain electronic invoice Note: If it is not registered with the tax bureau, an error will be returned. Please confirm that you have completed the blockchain merchant registration application with the tax bureau. The operation path of maintaining product codes is: equipment code - product code - new product code - tax product code - enter the name to search. By searching for the product code name, you can quickly find the corresponding code, and selecting it will automatically bring out the product number, tax rate and other information. Check "Default billing items" to "Yes" and click "Add". Note: Select the preferential tax rate that should be enjoyed here. Store management operation path: Group management - store management - check the store number - download the QR code - print the counter card - place the cashier for consumers to scan the code and issue invoices. After scanning the code, consumers can choose to pay for invoicing or review the invoicing method, and invoice That is sent to the consumer's email address. (Be sure to pay attention at this time: check whether the tax plate number is displayed and whether the status is enabled. If these two conditions are not met, the invoice cannot be issued.) Download the store invoicing QR code to activate the payment function. Before downloading the store invoicing QR code, you need to activate the payment function (currently, you can choose whether to enable this function according to your needs). Finally: After all the above operations are completed, the invoice can be issued and the authenticity can be verified. Part 2 Invoicing Management Manual Filling Here is the manual filling page. After selecting the invoicing type and tax plate (the blockchain merchant identification is displayed as "tax plate number" in the system), you can enter the header and issue the invoice. Scan the QR code to issue an invoice. Consumers scan the QR code to issue an invoice (the QR code here is the store invoicing QR code downloaded in the store management function). Operation path: Open WeChat—scan the consumer to fill in the consumer amount and fill in the header information and click "Pay and invoice" or just "Submit for invoicing". After submitting the invoice, enter the submission success page, click Finish, and enter the invoice list page, where you can see the status and details of the invoice you just applied for. After consumers submit the invoicing application by scanning the invoicing QR code at the front desk of the store, the merchant can review the invoice-related information on the computer webpage. The corresponding invoices can be screened based on header type, invoice type, review status, etc. Review. Only after passing the review will the invoicing be successful. Operation path: Invoicing management - Invoicing review - After the review is passed, the electronic invoice can be generated in the "District Ticket Assistant" on consumer WeChat. It takes less than 3 minutes from filling in the information to generating the electronic invoice. It is really simple, fast and convenient. To query the invoice issuance status, the merchant can check the invoice details. The operation path is: Query Statistics - Invoice Details - Check the box and proceed with subsequent operations. You can check the invoice issuance status and perform operations such as retry invoicing/redemption/send email/download PDF and other operations on the invoice. The consumer searches for the invoice record. The consumer searches for the invoice record and sends it to the email. Operation path: Open WeChat - find the "District Invoice Assistant" applet - click to enter. The consumer clicks to view the invoice PDF to view the electronic invoice issued, or you can simply The town chooses to send the electronic invoice to the email address, click Send Email, enter the email address, and click Confirm. You can view it in your mailbox. To check the authenticity of units and individuals who have obtained blockchain electronic invoices, they can check and verify through the official website of the Yunnan Provincial Taxation Bureau of the State Administration of Taxation or follow the WeChat public account of the Yunnan Provincial Online Taxation Bureau. They have the right to reject invoices that do not meet the regulations. Okay, that’s it for our study of the blockchain electronic invoice operation. If you have any questions, you are welcome to consult the nearest tax authority!

④ What does mcy mean?

The initial abbreviation of Mengjiyuan, a blockchain digital certificate similar to Bitcoin, or other terms

⑤ The components of the blockchain

The components of the blockchain are as follows:

Openness: The system data of the blockchain is open and transparent, and everyone can participate. For example, when renting a house, you can know the previous rental information of this house and whether there have been any problems. , of course some personal private information here is encrypted.

Autonomy: The blockchain adopts consensus-based specifications and protocols (such as a set of open and transparent algorithms), and then each node follows theIt is operated according to this standard, so that everything is done by machines, and there is no human element. This changes trust in people to trust in machines, and any human intervention has no effect.

The information cannot be tampered with: If the information is stored in the blockchain, it will be saved permanently and there is no way to change it. As for the 51% attack, it is basically impossible to achieve.

Anonymity: There is no personal information on the blockchain, because it is all encrypted and is a string of letters and numbers, so your various ID card information and phone number will not appear. Numbers are being resold.

⑥ Hot! Create and play with your own blockchain in 5 minutes

Blockchain is developing so fast this year! From an unfamiliar concept at the beginning, it has now taken off in various industries. A single spark has the potential to start a prairie fire. I really hope I can have my own blockchain to practice with! But how can one person and one computer set up a blockchain environment? The blockchain is so popular that it is not easy to say that I love you!


Don’t Worry! The editor has been addicted to blockchain and smart contracts and can’t extricate himself! Now I will take you step by step to start from scratch and create your own blockchain in 5 minutes! ~
The SuperVessel platform developed by IBM China Research Institute provides a blockchain development and testing environment for blockchain enthusiasts and developers. Through this platform, users can create multi-node blockchains based on Hyperledger Fabric for free and super quickly, and play with smart contracts on their own chains.
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0.
Preparation
All you need is your local browser!
1. Register an account
Access the public beta address of SuperVessel blockchain service: 8800/bc.
Click the Log in button in the upper right corner, click Register in the pop-up window, fill in your email and password and submit. At this time, it is recommended to check the activation email in your mailbox and activate your account (Editor's tip: It doesn't matter if you activate lazily, but some advanced services must be activated before they can be used).
2.
Quickly create your own blockchain
After registration is completed, return to the homepage and click on the huge GIVE ME A BLOCKCHAIN ​​(Give me a blockchain!) button. Select the Consensus Plugin (consensus plug-in) and Size (number of blockchain network nodes) you want in the pop-up box.
Editor's note: Currently there are two consensus plug-ins officially provided by Hyperledger Fabric: noops and pbft.
After clicking Submit, you will get your own blockchain in a few seconds and automatically enter the monitoring panel. Yep, get oneYour own blockchain is that simple!
After entering the monitoring panel, you can see that the left side is the smart contract management panel, including the management and deployment of smart contracts; the right side is the network panel, which displays the applied blockchain network status, topology, and connections between nodes. Latency information, etc. are clear at a glance; click the telescope icon in the upper right corner to monitor the log information of each node in real time. The bottom is the blockchain panel, which shows the overall situation of the current blockchain. In the initial state, there is only one block.
3. Deploy and use smart contracts
Next, the editor will teach you how to deploy and use smart contracts on your own blockchain.
Under the Smart Contracts tab of the smart contract management panel, 2 smart contracts are listed as examples, namely map and chaincode_example02. The map contract can store key-value pairs, and the chaincode_example02 contract can simulate transfers and queries between two people.
Editor's note: The codes for these two sample contracts can be found in the Hyperledger Fabric source code.
Take the deployment and use of the chaincode_example02 contract as an example:
Deploy the contract
Click the Deploy button corresponding to the chaincode_example02 contract, and fill in the initialization value of the contract, including the contract name, initial function, and initial parameters. The initial function of the contract is init, and the initial parameters need to be filled in according to the format, such as ["a", "100", "b", "200"], which means registering two people a and b, giving them 100 units and 200 units respectively.
Click the Deploy button and the contract will be deployed in your blockchain. The process will take about 20 to 40 seconds. When a new block appears on the blockchain panel, it usually means that the contract has been deployed.
Call the contract
After the deployment is completed, view the deployed contract instance under the My Deployment tab of the smart contract management panel.
Click the Invoke button below the Action to call the smart contract, and fill in the called method name and corresponding parameters (the method names and parameters of different contracts have different meanings, which are related to the content of the contract). For this contract, call the invoke method name and fill in the parameters ["a", "b", "50"], which means a transfers 50 units to b.
After clicking Submit to complete the call, you can view the blockchain situation and a new block will be generated.


Query Contract
After the call is completed, you can query the contract execution results. Still under the My Deployment tab, click the Query button under Action to query the smart contract and fill in the query method name.and corresponding parameters. If you select the query method name and fill in the parameter ["a"], it means querying the current unit of a.
After clicking Submit, you can see that the current unit of a is 50. You can try query b again!
OK, then you can continue to operate the contract, observe the blockchain situation, or deploy a new smart contract, such as map, on the blockchain. For ease of use, the method names and parameter formats for deploying, calling, and querying contracts are all filled in by default. You only need to select a method name and change the parameters as you like! See how long you can play with the chain~
4. Upload and test your own private smart contract
In addition to the two public smart contracts currently provided, you can also upload and test your own private contract! Private contracts can only be seen by you.
Click Import private smart contract under the Smart Contracts tab.
After filling in the contract name and description, and uploading the contract code file, click Import to complete the upload.
Then the contract I uploaded will appear in the Smart Contracts list and can be deployed, called and queried as before.

⑦ What are the classifications of blockchain and what is the structure of blockchain

The concept of blockchain has been quite popular recently. It comes from The implementation of cryptocurrencies such as Bitcoin, but this technology has been gradually used in various fields. So do you know what the classifications of blockchain are? What is the structure of blockchain? 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, just 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 using the general ledger technology of the blockchain for accounting, you canTherefore, a company, or an individual, has exclusive write permission to the blockchain. 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 legal currency for cryptocurrency. They are simple to implement, get money quickly, and have low costs, but the risks are also high. 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? of the entire content.

⑧ How can a computer quickly implement fct currency network node block link

There are three ways to speed up the opening of web pages: one is to increase the network bandwidth, and the other is to optimize the user's local machine , The third is that website designers make certain optimizations to web pages.
The following are some processing methods:
Optimize images and use appropriate image formats;
Optimize CSS;
Reduce http requests (remove some unnecessary objects, separate two adjacent Combine pictures into one, merge CSS)
Remove unnecessary add-ons
Some content can be made static, so make it static to reduce the load on the server
Statistics code is placed at the end of the page

⑨ What is blockchain

In the simplest terms, blockchain is a distributed ledger.

To understand what this means, we first have to look at its opposite: a centralized ledger. Because blockchain technology started with finance, we will also introduce it below using banks as an example.

The following is our process for using bank debit card transactions:

You can swipe your card to purchase goods in stores.

The merchant sends a statement to your bank for the agreed upon amount.

Your bank will verify that you may have authorized the purchase.

The bank sends the money to the merchant.

Finally, the bank records this information in its ledger.

There’s a lot of technology involved here, but that’s basically it. The last step is important - the bank records all transactions made by the customer. This ledger goes all the way back to the first transaction the bank made.

This ledger is kept, maintained and regulated by the bank. You can read it in your online bank account, but you can't change it. The bank has complete control. If it decides to make a change, there's nothing you can do about it.

Crucially, if hackers were able to access a bank’s ledger, that could cause a lot of problems. They can change the account balance to make it look like certain transactions never occurred, etc.

This is why distributed ledgers are so cool.

Blockchain Network Visualization

If a bank operates on a distributed ledger, each member of the bank will have a copy of the ledger, and whenever any member of the bank When they make a purchase, they tell every other member of the bank.

Each member will validate the transaction and add it to the ledger (the added records are called "blocks"). This has some important benefits, as there is no centralized authority that can manipulate records. Hackers accessing one ledger won't be a big problem because other ledgers can easily verify it.

On the other hand, it requires a lot of work. In short, the second system is blockchain (at least in financial scenarios).

As mentioned above, blockchain is a decentralized list of transactions. If I send Xiao Ming 2 Bitcoins, I send a message to everyone in the network saying "I am sending Xiao Ming 2 Bitcoins" and they all record the transaction.

The future of blockchain, how will it change our lives?

One thing that is important about blockchain is that it is a public resource and no one really owns it because everyone owns it.

Blockchain is not just science fiction. We don’t need to understand the mechanism behind this technology, but you do need to understand that it may completely change our lives in the next 20 years.

This sounds bold, but remember, 20 years ago we were browsing the Internet on Netscape, using state-of-the-art Motorola flip phones, and buying our first DVD players. At that time, if we imagined that a computer could be held in our hands and that we could buy cars, make payments, and watch movies, it would have been considered a fantasy.

Although the impact of blockchain may not be as obvious as the Internet, nor as tangible as mobile phones, blockchain will effectively solve many worries in daily life. Such as intermediaries cheating people, transaction delays, etc. In our current lives, middlemen are everywhere and we take them for granted as a part of life. If one day these intermediaries cease to exist, you will find that the world will become a different place.

Imagine that by 2040, blockchain may become a mature and widely used technology. When one day you can't live without the blockchain just like you can't live without the Internet now, you will be surprised to find that this decentralized accounting technology has simplified the complexity and become a part of your lifestyle