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① 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. That’s right, getting your 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 smart contracts in your ownDeploy and use smart contracts on the 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 if you can play with the chainHow long~
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.

② Is it okay to invest in blockchain now? What are the precautions?

You can participate with a small amount of money. BiJing is the next generation Internet outlet. The following is my investment in the past year. I hope my experience will be helpful to you.

While I was relaxing physically and mentally during the holidays, I took stock of the pitfalls I had gone through, sorted out the gains and losses, and came to the following insights.

1. In the early days, I believed too much in the words of Big V, the big guy in the currency circle, and bought some coins from their platform. Now it is close to zero. I feel that I am so naive that I believe their lies. It is difficult for people to withstand the temptation of huge wealth, and of course they cannot escape. But saying one thing and doing another, and not admitting it in the end, has lost their moral bottom line. They have made a lot of money, leaving me waiting for Leek to stand on the top of the mountain and tremble.

2. The judgment of various public accounts and various media in the currency circle on market trends is similar to the effect of betting on dice. Of course, this does not mean that the media are completely irresponsible or incompetent. In fact, some media still cherish their feathers and do their best to analyze projects and judge trends for fans. But don’t forget that, by nature, the market is unpredictable, otherwise it wouldn’t be called a market. Bankers and leeks are always playing a cat-and-mouse game. The media’s predictions often provide savvy bankers with guidance on reverse actions. When most media are optimistic about the market, it is also when the bankers raise their sickles; when the media generally believes that When the market is still going deep, the market makers may be building positions secretly. This is not difficult to understand, because the media acts as the opinion leader of the leeks.

3. The current market still shows the characteristics of capital market, which is dominated by speculation, and the real value investment of blockchain has not yet been reflected. The performance is that almost all altcoins are linked to the rise and fall of Bitcoin. Why is it related to Bitcoin? Because there are no other standards to rely on? If there is no killer application, this linkage effect will be difficult to break, and there will be no real bull market in the currency market. The killer application mentioned here is not like Ethereum, issuing coins, building an underlying public chain, etc., but having real application scenarios that can link virtual digital assets on the chain to reality. In the supply and demand of the scene, DAPP must have a good user experience and be accepted by the public outside the currency circle. In this case, digital currency will have real support, and the development of blockchain will beSpring will come, otherwise it will be all nonsense.

4. Often start from historical phenomena to form expectations for the future. In 2017, some altcoins had a market price of a hundred times or even higher. Therefore, I always feel that the altcoin in my hand has increased three to five times after I bought it, which is not satisfactory and not in place. As a result, I did not sell it in time and ended up rotting in my hands. Let's analyze it. This time is not that time. At that time, there were fewer projects and more funds. At this time, there are more projects and less funds. The situation is exactly the opposite. Ignorance and greed are very dangerous. Since 2018, as the big Vs have made profits and left the market, the funds on the market have shrunk significantly. Even if the market rises, the original market funds are playing the game. The money-making effect is getting smaller and smaller. OTC funds are waiting and watching. Only Only when the wealth-creating effect appears will OTC funds have the urge to come in.

5. New ways of playing are constantly emerging. As the money-making effect becomes smaller and smaller, new leeks become old leeks, and it is difficult to harvest them with traditional harvesting methods. Only by making some innovations can the leeks flock to it and obey. Fcoin trading and mining, Huoniu video, etc. have made a small group of people rich, and at the same time made a large group of people miserable. These projects are essentially a drum-passing fund-raising game, changing the soup without changing the medicine. The earlier you participate, the better the results will be. By the time I wait for Leek to participate, it will basically be in the mid-to-late stage. If I invest money in it, it will definitely be harvested. Since I participated in Fcoin early, I made a small profit, but I participated in Huoniu late, and was cut as soon as I entered. Fortunately, I only invested a little tentatively.

6. Will the market rise again? The answer is yes. From two aspects. On the one hand, there is a consensus that blockchain is the future trend. It is said that there is a rule that can prove whether a technology can become a trend in the future. It depends on whether the number of articles published about this technology can increase exponentially every year. Blockchain completely complies with this rule. On the other hand, as mentioned earlier, the current market is mainly capital. So even if blockchain is not a future trend, it will still have a good market. Because the characteristic of the capital market is that when funds enter the market, the market will rise, and when funds withdraw from the market, the market will fall, and there is no need for a reason for funds to enter and exit the market. Currently, the funds on the market include not only retail investors, but also large investors and institutions. It is not only leeks that are trapped, but also bankers who have cut the vegetables but failed to harvest. No matter who you are, there is only one purpose for entering the currency circle, and that is to make money. If the market does not rise, there will be no big money-making effect. If it falls for a long time, it will rise. This is an unbreakable rule. Of course, whether retail investors can make money depends on themselves. of good fortune.

Future plans:

1. Best policy. Strictly control positions, adjust layout, and stay away from air coins. Position control is always the first priority and is the lifeline of investors. Only after losing money did I realize the importance of position control. I really regret it now. If I had entered the dissatisfied position, I wouldn't have been so deeply trapped. Now that the matter has come to this, if we decisively liquidate all air-related projects, we can free up some funds. Then, select a few high-quality projects for fixed investment. If you don't have enough funds, you can spend a small part of it from your daily income. To do this step well, you need to make up for itThe last important link is learning. The reason why I couldn't distinguish between good and bad projects in the past was that I didn't study enough and my skills were shallow. Instead of focusing your time and energy on watching the market, checking public accounts, and asking for news, it is better to focus on studying. Accumulated knowledge and skills are also a kind of wealth, and no one can take them away. It is necessary to learn basic knowledge about economics, finance and investment, but also to learn about blockchain. I have read some books (General Economics, Economics in One Lesson, Xiang Shuai’s Peking University Finance Course (subscription required, electronic version not available), Buffett’s Law, Buffett Teaches You to Read Financial Reports, Blockchain Technology Guide, Decoding Zone Blockchain complete set), the link address is given (link:

Extraction code: sbmv) If you need it, you can download it with confidence.

2. The middle strategy. Do an oversold rebound. The small money-making effect does not mean that there is no money-making effect. You must enter the market with a small amount of money, you must focus on one or two projects, and you must move in and out quickly when there is a sharp decline that makes most people panic. You must not be reluctant to fight. (You can pay attention to one or two large public accounts to judge the panic in the market.)

3. Make the final decision. Be a wool party. On the premise of not expending energy, it is not a bad idea to receive candies and get some benefits. Under the current market situation, grasshoppers are also meat. The traditional way of receiving candy is too troublesome, and the gain is not worth the loss. Found two candy delivery platform projects, one is Fulcrum:

The other is Ant Mine Chicken:

The former airdrops various candies from time to time, and also has community social attributes, forming a system The latter is a new candy game platform under Candy World, which accumulates candies through the game of raising chickens and laying eggs. It is reported that it has just received strategic investment from GBls (Global Sleepless Blockchain Leaders Summit).

In addition, some Dapps that are in the testing stage are also worth a try. Anyway, it doesn’t involve any energy, just think of it as a way to relax after stressful work. Fighting video (ios version: https://fir.im/51ds Android version: http://a.app.qq.com/o/simple.jsppkgname=com.xysk.mvpart.douxi, invitation code: WN4VIZ) , focusing on creating a vertical segmentation field for professional artists. Fans and users can accumulate star power and sign in every day to obtain stars. Stars can be exchanged for prizes or sold privately. It will be launched in October.

③ Which companies have energy management systems that are technically mature?

The energy management system uses information technology to online monitor the dynamic process of production energy consumption of the entire enterprise and collect information during the production process. Wanzhou Energy Saving Service Company has done a good job in collecting a large amount of scattered energy consumption data of various energy media and realizing the fixed-point collection of meter data, which is very helpful for production enterprises to achieve energy conservation and efficiency, efficient production and rational utilization of energy. Good results.

④ How about Jiangsu Jigsaw Blockchain Technology Co., Ltd.

Jiangsu Jigsaw Blockchain Technology Co., Ltd. is a limited liability company (sole proprietorship of natural persons) registered on 2018-01-02. Its registered address is located on the second floor of No. 112 Shigu Road, Qinhuai District, Nanjing City.

The unified social credit code/registration number of Jiangsu Jigsaw Blockchain Technology Co., Ltd. is 91320104MA1UTYX4XJ. The corporate legal person Zheng Cheng is currently in business.

The business scope of Jiangsu Jigsaw Blockchain Technology Co., Ltd. is: blockchain technology, network technology development, technology promotion, technology transfer, technical consulting, technical services; computer system integration services; software development, technology Consulting; computer data processing; design, production, agency, and distribution of various domestic advertisements; e-commerce consulting; conference services; conference and exhibition services; real estate information consulting; business management consulting; financial consulting; market research. (Projects that require approval according to law can only carry out business activities after approval from relevant departments).

View more information and information about Jiangsu Jigsaw Blockchain Technology Co., Ltd. through Aiqicha.

⑤ Regardless of the current lack of popularity, GALA GAMES may be the leading platform for chain games in the future.

Speaking of the team of gala games, let’s first talk about the well-known and veteran social game listed company—Zynga!

Zynga is a social gaming company founded in June 2007 by Mark Pincus, Michael Luxton, and Eric Schiermeyer ), Justin Waldron, Andrew Trader and Steve Schoettler, and is headquartered in San Francisco, USA. Zynga occupies 6 of the top ten Facebook games. Zynga's profit model is very simple, similar to Tencent's. The main source of income is to make money by selling virtual items to users through social games.

Most of the games previously developed by Zynga were web games and published on social networking sites such as Facebook and MySpace. The games launched such as Treasure Isle, Texas Hold'em, Gang Wars and Dope Wars are all popular among a large number of users. Zynga mainly The source of income is to make money by selling virtual items to users through social games.

Zynga treats game products as Internet products and operates them quickly: launching products quickly and testing them fasterproducts are maintained and updated. As a company with more than 1,300 people, Zynga's emphasis on speed is incredible. Everyone must perform quickly as if they are recharged. Once he discovers a link is missing, Pincus pounces. Zynga is divided into a large number of teams, which ensures that the speed required by Pincus can be executed. It also ensures that the company can seize the market as soon as possible and make quick adjustments to the product. While most companies understand the need to maintain and update their games, fix bugs, and keep their users fresh, few companies update their games as many times a week as Zynga does.

As of July 26, 2021, Zynga has a market value of US$11.3 billion. (Stock code: ZNGA)

Gala Games: A blockchain game development company founded in 2018.

In addition to game development, the "Gala Games Ecosystem" ecosystem platform operated by the company is also gradually changing the public's view of the non-circulation of assets such as in-game items.

Gala Games is developing and operating a number of different types of games. Players can trade items obtained from games on the blockchain, which provides free circulation of in-game property, not just It's just as simple as playing games.

Behind Gala Games is an all-star team of the most outstanding minds and skill sets in digital gaming and blockchain. At present, the team has 60+ people and is still growing. The game has already been profitable before it is officially launched.

The first game released by Gala Games is Town Star, a deceptively simple but very in-depth farming simulation in which users build a farm to compete in weekly competitions.

The Gala Games gaming platform is able to leverage cryptocurrency and blockchain smart contract capabilities, allowing developers to design blockchain games while allowing players to own and transfer NFTs of loot obtained in games through a peer-to-peer market. Buy, sell and trade securely.

Mirans, an MMORPG/Adventure Simulator currently developed by Gala Games, is working to completely redefine the game development process and game model, putting power in the hands of players and giving them ultimate control over the content economy in games.

1. Town Star (already online)

"Town Star" is the sequel to Farmville.A competitive farming game developed by one of the co-founders of the later company Zynga, it is also the only currently operating blockchain game under Gala Games.

Although it is only in the testing stage now, its game map has been occupied and developed by many players.

"Town Star" world map

Any player can play Town Star through the browser page on the Gala Games official website.

This game is built on Gala's network using the Ethereum blockchain. Players need to grow a small farm into a vibrant town by growing crops, gathering resources, and creating materials to build more buildings. The interesting thing about this game is its high competitiveness and very down-to-earth gameplay. Players can enjoy farming and community development as they wish. Each competition round usually lasts for a week, which means players only have one week to optimize their farm and try to get the most points, since only the top players will receive rewards at the end. These rewards are usually GALA Tokens or other alternative prizes.

2. Mirans (coming soon)

Game studio and developer Gala Games has announced the title of its latest game "Mirans", a fantasy RPG that allows players to Possess rare in-game items. Set in a vast world ruled by five monarchs, Mirans offers players complete freedom of choice, including the ability to acquire, exploit, and sell assets ranging from humble landholdings ($50) to one of five ancient castles one ($500,000).

Gala Games leverages Ethereum’s ERC-1155 non-fungible token (NFT) standard to enable players to fully own in-game items. This provides a greater incentive for participation and creates liquidity for the trading of skins, artifacts, and other virtual items earned during matches. The Gala Games ecosystem includes connections to AAA game studios that promote unique items beyond the games that produce them, while fostering greater synergy between developers and players.

The studio’s most ambitious release to date, Mirans offers players a wealth of strategic options: they can set out into the wilderness and cast their destiny against monsters in deep woods and dungeons; A monarch works together as a knight in their court; or sets up shop in one of the five great cities in the realm.

The ability for players to own assets in the game is a central mechanic that allows players to capture portions of the wilderness and build strongholds ranging from small farms to large citiesland. Five castles are released in 1/1 terms (Earth, Sky, Moon, Sun, Stars), granting the owner a kingdom and capital within Miranda Dos. The smallest plot of land is a homestead and costs approximately $50 in GALA tokens, which is 1/1000 NFT.

Gala Games builds games and enters into strategic alliances with other game development companies to expand the network of player-owned game assets. Gala Network is the studio’s blockchain platform that hosts Townstar (the Farmville of blockchain), which enables true ownership of game assets to facilitate the buying and selling of NFTs. After connecting to an Ethereum wallet, Townstar players can harvest crops, build houses and even build entire cities. In the game, players can store assets such as BTC and ETH in integrated wallets and purchase items on the market. Mirans, a fantasy RPG, is Gala's largest and most ambitious release to date.

3. Fortified (under development)

Fotified is a tower defense game that requires players to fight against each other. The game uses NFT to manage land and soldiers, and players can participate in the game and receive rewards.

4. Echoes of Empire (under development)

Echoes of Empire is a current Star Wars strategy game. Players can own land in the galaxy, form guilds, form space battleship formations, and compete for space territories.

5. Spider Tank (under development)

There are currently more than 15 games under development on the Gala Games platform, and various studios They are also being developed for the GALA game ecosystem.

At present, the global chain game market has just started. Compared with the huge number of traditional game players in the world, chain games still have a huge market space. Combining blockchain with natural advantages, the Gala Games platform is likely to be used in the future. It will become a chain game distribution platform, where you can play various interesting chain games.