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1. What is the latest blockchain game Ethereum Clown?

The most fun “blockchain game” and “Ether Clown” pet are not fun for you Just OUT! !
Ether Clown (full name CryptoClown) is a digital and collectible blockchain game developed based on the Ethereum blockchain.

Use Ether coins to adopt clowns and resell them. You can also use them to breed a new generation of clowns with various strange shapes. You can also cultivate them and let them work to make money. This makes clowns Digital collectibles have more persistence and playability.

This is a pet that you can play with and make money from, come and see how to play with it!

The production of clowns
The production mechanism of clowns is divided into two types, one is official production, and the other is the production of breeding between two clowns.

The appearance of the clown
The appearance of the clown is composed of the attributes of 8 parts. The attributes of each part are divided into common and rare. The number of rare attributes is less than that of ordinary attributes. Making clowns with rare attributes more valuable.

Each clown is unique.

Joker Trading
Ether Joker can be used directly for trading.
Sell: Users can choose clowns to be auctioned on the trading market, and can sell multiple clowns of their own. Buy: The buyer selects the clowns for sale in the trading market and pays Ether to purchase the clown he likes.

4. Clown attributes and work
There are four clown attribute values: growth value, strength value, agility value, and wisdom value. The 0th generation clowns get the value of each attribute randomly, and the non-0th generation clowns obtained through breeding are mainly inherited.
Attribute values ​​can be changed by eating food.

5. Clown food and feeding
Owners can purchase spinach, beef, carrots, walnuts and other foods through the mall to feed their clown pets.

2. Full analysis of Alipay’s mysterious blockchain product “Open Alliance Chain”, the era of everyone joining the chain is here

The mysterious blockchain product that Ant has been teasing for many days has finally been unveiled .

On April 16, Ant officially announced its new blockchain product "Open Alliance Chain". The "Open Alliance Chain" claims to be a universal chain-linking product that "doesn't require a chain and can be uploaded quickly and at low cost" mainly for small and medium-sized enterprises and developers. It focuses on helping developers quickly deploy and develop blockchain-related applications.

According to Ant Blockchain Jin Ge, the "Open Alliance Chain" began testing in December last year. After more than three months of public testing, it has accumulated thousands of customers and developers (active ratio More than 10%), dozens of DApps have been built on the product.

This official announcement also heralds the "Open Alliance"Alliance Chain" officially moved from public beta to commercialization.

Lowering the threshold is an eternal topic in blockchain development.

Previously, when various Internet giants entered the cross-border blockchain field, they were willing to start with BaaS services.

BaaS services mainly focus on providing developers with a complete set of development tools to lower the threshold for developers to build their own alliance chain system.

How is the "open alliance chain" that emphasizes further lowering the entry threshold realized?

The biggest difference between "open alliance chain" and BaaS services is that developers can use the blockchain without purchasing servers or building nodes.

Specifically, small and medium-sized developers can directly access the blockchain and carry out on-chain business through the IDE, smart contract development templates, DApp development assistants, and other components provided by Ant Blockchain.

Jin Ge, general manager of the Ant Blockchain Platform Product Department, gave an example of traceability scenarios:

"Open Alliance Chain" is actually a product between a public chain and an industry alliance chain. But in terms of form, it is more inclined to the industry alliance chain.

There are also differences between "open alliance chains" and industry alliance chains. The customer levels and business models they cover are different.

In terms of customer level differences, industry alliance chains cover top customers, such as listed companies or leading companies similar in size to listed companies, which have greater influence in the industry. The "open alliance chain" covers small and medium-sized customers with small revenue and some developers.

In terms of business model differences, industry alliance chains are more connected in the form of projects, with long implementation cycles and project volumes exceeding one million. "Open Alliance Chain" emphasizes a ready-to-use, on-demand pricing model with a low threshold.

At the press conference, Jin Ge also made a detailed analysis of the five major capabilities of the "open alliance chain":

Overall, the "open alliance chain" Currently we are adopting a low-cost, low-threshold pricing service model.

From the official website, it can be seen that the open alliance chain provides users with two versions: professional version and enterprise version. The product has three pricings, each priced at 100 yuan/month (professional version, for test-type novice developers) , 999 yuan/year (professional version, for developers who really need to access the blockchain), 4888 yuan/year (enterprise version, for enterprise-level developers with relatively high-frequency transactions).

The enterprise version is suitable for high-frequency scenarios such as games, social networking, bills and people's livelihood, and public welfare, while the professional version is suitable for low-frequency scenarios such as copyright contracts, organizations, and traceability.

Both the professional version and the enterprise version can enjoy the basic services provided by the open alliance chain. In addition to the price, the biggest difference between the two is that the TPS of the professional version user rights is ≤ 10, and the monthly available fuel is1 billion; the TPS available for enterprise version user rights is ≤100, and the available fuel per month is 100 billion. In addition, the first 100 enterprise version users can also obtain the creation product status of the "open alliance chain".

In addition to lowering the threshold, large companies are always willing to create scenarios when it comes to blockchain. The evolution from BaaS to "open alliance chain" is also a manifestation of giants attracting more developers by lowering the threshold to feed back application scenarios.

According to reports, the current main application scenarios on the open alliance chain are mainly 2C services, involving game interaction, public welfare traceability, copyright, bills and people's livelihood, etc.

It is easier for customers with their own scenarios to form a relatively stable group.

The follow-up plan of "Open Alliance Chain" is also closely related to the implementation of blockchain scenarios.

Jin Ge also introduced three future plans for "Open Alliance Chain":

1. Create more valuable industry scenarios based on existing customers, and hope In the future, we can expand more blockchain service providers in small and medium-sized enterprise industries, such as education, retail, agriculture, medical care, cultural tourism and other industries, and contribute more scenarios;

2. The Ant Industry Alliance Chain Provide it to customers on an on-demand pricing basis;

3. Gradually add more industry alliance chain technologies, such as digital identity, cross-chain, and cloud integration capabilities, to the open alliance chain according to the market pace Go inside to further lower the development threshold for developers and solve technical problems.

3. What is iac’s blockchain game and what is Ether Clown?

iac Ether Clown is the latest blockchain development game. In the game, everyone cultivates clowns and also It allows them to work and earn income. Doesn’t it look very interesting? The following friendly editor will bring you a detailed introduction of iac ether clown, let’s take a look!
What is iac Ether Clown

Ether Clown is a blockchain pet raising game launched by the IAC advertising platform. It combines the entertainment method of raising pets to make money easily, and at the same time combines the blockchain Chain technology to ensure the interests of players. Experience the fun of raising, working, earning, and reselling games with beautiful graphics, rich experience, and happy earnings! Make real games to give players a more enjoyable experience, and use games, a well-known product form, to bring mankind into the era of full intelligence!
Ether Clown is a digital collectible, a non-standard digital currency (Ether, etc.), based on the blockchain, which can never be changed. The relevant data information can be clearly queried through verification on a third-party platform! CryptoClow is a digital, collectible blockchain game developed based on the Ethereum blockchain. Use Ethereum to adopt clowns and resell them. You can also use them to breed a new generation of clowns with various unique shapes. You can also train them to work and make money, so that clowns can becomeDigital collectibles have more persistence and playability.
How to play:

The clown production mechanism is divided into two types, one is the official production, and the other is the breeding production between two clowns. The appearance of each clown is determined by an immutable gene stored in the smart contract. Each gene is unique, so each clown is unique. There are four types of clown attribute values: growth, strength, agility, and wisdom. The 0th generation clowns get the value of each attribute randomly, and the non-0th generation clowns obtained through breeding are mainly inherited. Ether Clown can be directly used for trading! You can buy spinach, beef, carrots, walnuts and other foods through the mall!

4. What are the latest blockchain games?

There are thousands of blockchain games now. The top five in spiderstore are: Crypto Hero, Cloud Fighting Dragon, Ether Elf, Blockchain Cute Pet, CtyptoAssault

5. 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.
----
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 Consensu you want in the pop-up boxs Plugin (consensus plug-in) and Size (number of blockchain network nodes).
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 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. At this timeNew blocks 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.

6. Tutorials for getting started with blockchain

However, there are very few simple and easy-to-understand introductory articles. What exactly blockchain is and what makes it special is rarely explained.
Next, I will try to write a best-understood blockchain tutorial. After all, it is not difficult. The core concept is very simple and can be explained clearly in a few sentences. I hope that after reading this article, you will not only understand the blockchain, but also understand what mining is, why mining is getting more and more difficult, and other issues.
It should be noted that I am not an expert in this area. Although I have been paying attention to it for a long time, my detailed understanding of blockchain started at the beginning of this year. You are welcome to correct any errors or inaccuracies in the article.
1. The essence of blockchain
What is blockchain? In a word, it is a special distributed database.
First of all, the main function of blockchain is to store information. Any information that needs to be saved can be written to the blockchain and read from it, so it is a database.
Secondly, anyone can set up a server, join the blockchain network, and become a node. In the world of blockchain, there is no central node. Every node is equal and stores the entire database. You can write/read data to any node, because all nodes will eventually be synchronized to ensure that the blockchain is consistent.
2.The biggest feature of blockchain
Distributed database is not a new invention, and there have been such products on the market for a long time. However, blockchain has a revolutionary feature.
Blockchain has no administrator, it is completely centerless. Other databases have administrators, but blockchain does not. If one wanted to add auditing to the blockchain, it would not be possible because it is designed to prevent the emergence of a central authority.
It is precisely because it is unmanageable that blockchain can be uncontrollable. Otherwise, once big companies and large groups control the management, they will control the entire platform, and other users will have to take orders from them.
However, without an administrator, everyone can write data into it. How can we ensure that the data is trustworthy? What if it is modified by a bad person? Please read on, this is the wonderful thing about blockchain place.
3. Block
Blockchain is composed of blocks. Blocks are much like database records. Every time data is written, a block is created.
Each block contains two parts.
Head: records the characteristic values ​​of the current block
Body: actual data
The block header contains multiple characteristic values ​​of the current block.
Generation time
Hash of the actual data (i.e. block body)
Hash of the previous block
...
Here, you need to understand what a hash is , which is necessary to understand blockchain.
The so-called hashing means that the computer can calculate a characteristic value of the same length for any content. The hash length of the blockchain is 256 bits, which means that no matter what the original content is, a 256-bit binary number will be calculated in the end. And it can be guaranteed that as long as the original content is different, the corresponding hash must be different.
For example, the hash of the string 123 is (hexadecimal), which is 256 bits when converted to binary, and only 123 can get this hash. (Theoretically, it is possible for other strings to get this hash, but the probability is extremely low and can be approximated as impossible.)
Therefore, there are two important inferences.
Corollary 1: The hash of each block is different, and the block can be identified by the hash.
Corollary 2: If the content of the block changes, its hash will definitely change.
4. The non-modifiable nature of Hash
Blocks and hashes have a one-to-one correspondence, and the hash of each block is calculated based on the block header (Head). That is to say, the characteristic values ​​​​of the block header are connected together in order to form a very long string, and then the hash is calculated on this string.
Hash = SHA256 (block header)
The above is the calculation formula of block hash. SHA256 is the hash algorithm of the blockchain. Note that this formula only contains the block header, not the block body. In other words, the hash is uniquely determined by the block header.
As mentioned before, the block header contains a lot of content, which contains the hash of the current block body and the hash of the previous block. This means that if the content of the current block body changes, or the hash of the previous block changes, it will definitely cause the hash of the current block to change.
This point has great significance for blockchain. If someone modifies a block, the hash of the block changes. In order for subsequent blocks to still be connected to it (because the next block contains the hash of the previous block), the person must modify all subsequent blocks in sequence, otherwise the modified block will be removed from the blockchain . Due to the reasons mentioned later, hash calculation is very time-consuming, and it is almost impossible to modify multiple blocks in a short period of time, unless someone controls more than 51% of the computing power of the entire network.
It is through this linkage mechanism that the blockchain ensures its own reliability. Once the data is written, it cannot be tampered with. This is just like history, what happened happened, and it can’t be changed from now on.
Each block is connected to the previous block, which is where the name blockchain comes from.
5. Mining
Since synchronization between nodes must be ensured, the adding speed of new blocks cannot be too fast. Just imagine, you have just synchronized a block and are preparing to generate the next block based on it, but at this time, another node generates a new block, and you have to give up half of the calculations and synchronize again. Because each block can only be followed by one block, you can only generate the next block after the latest block. So, you have no choice but to sync as soon as you hear the signal.
So, the inventor of the blockchain, Satoshi Nakamoto (this is a pseudonym, and his true identity is still unknown) deliberately made it difficult to add new blocks. His design is that on average, the entire network can generate a new block every 10 minutes, which is only six per hour.
This output speed is not achieved through commands, but by deliberately setting up massive calculations. In other words, only through an extremely large amount of calculations can the effective hash of the current block be obtained and the new block added to the blockchain. Because the amount of calculation is too large, it cannot be done quickly.
This process is called mining, because the difficulty of calculating a valid hash is like finding a grain of sand that meets the conditions among the sand in the world. The machine that calculates hashes is called a mining machine, and the person who operates the mining machine is called a miner.
6. Difficulty coefficient
After reading this, you may have a question. People say that mining is difficult, but isn’t mining just about using a computer to calculate a hash? This is the strength of computers. How could it be? It becomes very difficult, why can’t it be calculated?
It turns out that not just any hash can be used, only hashes that meet the conditions will be accepted by the blockchain. This condition is particularly harsh, causing most hashes to fail to meet the requirements and must be recalculated.
It turns out that the block header contains a difficulty coefficient (difficulty), which determines the difficulty of calculating the hash. For example, the difficulty coefficient of the 100,000th block is 14484.16236122.
Blockchain ProtocolIt is stipulated that the target value (target) can be obtained by dividing the difficulty coefficient by a constant. Obviously, the greater the difficulty coefficient, the smaller the target value.
The validity of the hash is closely related to the target value. Only hashes smaller than the target value are valid, otherwise the hash is invalid and must be recalculated. Since the target value is very small, the chance that the hash is smaller than this value is extremely slim, and it may be calculated 1 billion times before it is considered a hit. This is the fundamental reason why mining is so slow.
As mentioned earlier, the hash of the current block is uniquely determined by the block header. If the hash of the same block needs to be calculated repeatedly, it means that the block header must keep changing, otherwise it is impossible to calculate different hashes. All feature values ​​in the block header are fixed. In order to make the block header change, Satoshi Nakamoto deliberately added a random item called Nonce.
Nonce is a random value. The role of the miner is actually to guess the value of Nonce so that the hash of the block header can be smaller than the target value so that it can be written to the blockchain. Nonce is very difficult to guess. At present, we can only use trial and error one by one through exhaustive methods. According to the protocol, Nonce is a 32-bit binary value, which can reach a maximum of 2.147 billion. The Nonce value of the 100,000th block is 274148111. It can be understood that the miner started from 0 and calculated 274 million times before obtaining a valid Nonce value so that the calculated hash can meet the conditions.
If you are lucky, you may find Nonce in a while. If you are unlucky, you may have calculated it 2.147 billion times without finding the Nonce, that is, it is impossible to calculate a hash that meets the conditions for the current block body. At this time, the protocol allows miners to change the block body and start a new calculation.
7. Dynamic adjustment of difficulty coefficient
As mentioned in the previous section, mining is random, and there is no guarantee that a block will be produced in exactly ten minutes. Sometimes it can be calculated in one minute, and sometimes it may take several hours. No result. Overall, with the improvement of hardware equipment and the increase in the number of mining machines, the computing speed will definitely become faster and faster.
In order to keep the output rate constant at ten minutes, Satoshi Nakamoto also designed a dynamic adjustment mechanism for the difficulty coefficient. He stipulated that the difficulty factor should be adjusted every two weeks (2016 blocks). If the average block generation speed in these two weeks is 9 minutes, it means that it is 10% faster than the legal speed, so the next difficulty factor will be increased by 10%; if the average block generation speed is 11 minutes, it means It is 10% slower than the legal speed, so the difficulty factor of the next step must be lowered by 10%.
The difficulty coefficient is adjusted higher and higher (the target value is getting smaller and smaller), which makes mining more and more difficult.
8. Forks of the blockchain
Even if the blockchain is reliable, there is still an unresolved problem: if two people write data to the blockchain at the same time, that is to say, two people write data to the blockchain at the same time. Blocks join because they are connected to the previous block, forming a fork. Which block should be adopted at this time?
The current rule is that new nodes always use the longest blockchain. If there is a fork in the blockchain, it will look at which branch is behind the fork to reach 6 new blocks first (called six confirmations). Based on a block calculation of 10 minutes, it can be confirmed in one hour.
Since the generation speed of new blocks is determined by computing power, this rule means that the branch with the most computing power is the authentic blockchain.
9. Summary
Blockchain, as an unmanaged distributed database, has been running for 8 years since 2009 without major problems. This proves it works.
However, in order to ensure the reliability of data, blockchain also has its own price. The first is efficiency. You have to wait at least ten minutes to write data to the blockchain. All nodes synchronize the data, which requires more time. The second is energy consumption. The generation of blocks requires miners to perform countless meaningless calculations. This is Very energy consuming.
Therefore, the applicable scenarios of blockchain are actually very limited.
There is no management authority that all members trust
The written data does not require real-time use
The benefits of mining can make up for its own costs
If the above conditions cannot be met, then the traditional database is Better solution.
Currently, the largest application scenario (and possibly the only application scenario) of blockchain is the cryptocurrency represented by Bitcoin.

7. Is the latest blockchain project NMC coin

First of all, there are many kinds of blockchain projects, and blockchain projects are constantly updated over time.
From the perspective of blockchain architecture, it can be divided into three stages.
Take blockchain 1.0 as an example. Blockchain 1.0 mainly implements digital currency, which is mainly divided into core nodes and front-end tools
Blockchain 3.0, the blockchain 3.0 stage mainly integrates blockchain Chain is seen as a broad solution that can be combined with the technical characteristics of blockchain and applied in other fields. It can also be called "blockchain implementation application"
NMC can also be called domain name currency. It is a distributed domain name system based on Bitcoin technology that is secure and uncensored. It's not a scammer, but due to the relative lack of supervision, digital currencies can easily be pushed up or sold off, so you may get rich overnight or lose all your capital overnight. This is the universality of digital currencies, not just NMC coins.
The connection is that CNM is developed based on blockchain technology.
In short, blockchain is an underlying technology that will develop faster and faster, and more and more blockchain projects will appear. We must look at this kind of thing from a rational perspective. Be cautious and don't invest blindly following the crowd.

8. What is the newly developed blockchain pet ether clown training game? I heard that it has just started internal testing. How can you still make money by playing the game

Everyone Well, I'm the Ethereum Clown, CryptoClown is my formal full name. To be a real blockchain pet raising game, CryptoClowns is a digital and collectible blockchain game developed based on the Ethereum blockchain. Use Ethereum to adopt clowns and resell them. You can also use them to breed a new generation of clowns with various strange shapes. You can also cultivate them and let them work to make money. This gives the digital collection of clowns more value. Durability and playability.
The closed beta officially starts today!
As a pet that everyone loves, besides being “beautiful”, what other characteristics do I have?
I will act coquettishly with my master every day;
I will work and make money when I am full. I will eat less and earn more;
I will not only cost the master no money to have a girl, but also earn more money. Can make money (male clown);
I give birth to a baby that is not out of shape, the baby can make money when it grows up, the baby’s baby can make money when it grows up, and there are endless descendants (female clown)!
I carry a 54-bit genetic code (well, several pairs more than my owner’s 23 pairs), engraved with the genes given to me by my ancestors and fathers, and my own random genes. They determine my appearance: Background color, clothing pattern, skin pattern. Occasionally, genetic mutations may occur, resulting in some particularly rare shapes. No matter what, I am unique!
I am a digital collectible. This is my most typical and important characteristic. I am a non-standard digital currency (like Ethereum, each unit is equivalent, we call it a standard digital currency). Each of our brothers and sisters represents the value of a currency and will change with the owner. The price of the photos is getting higher and higher. If the owner has a new love, you can sell it to me at any time to make money. I swear I won’t count the money for you, really!
I, based on the blockchain, can never be changed: all my actions mentioned above will be recorded on Ethereum. Through verification by the third-party platform, the owner can clearly check all the above information about me and my partners. Data information. When a gentleman is magnanimous, he is talking about us. The code of our smart contract is all open source, and owners can view it at will

9. Recently, friends around me have been talking about city coin and I want to know what it is

1. To the users and supporters of CITY COIN:

The CITY COIN project has received much attention and support from people in the industry since its inception. The CITY COIN blockchain has accumulated energy for four years, continuously iterated and developed, and began to upgrade the wallet in 2018. Now the first version of the CITY COIN blockchain 2.0 has been upgraded. The CITY COIN team hereby announces that CITY COIN Blockchain 2.0 will be officially open for public testing on May 11, 2018, Beijing time. The CITY COIN team would like to express its sincere gratitude to all system developers, CITY COIN members, participants, supporters, etc.

CITY COIN Blockchain 2.0 will have the following core functions:

1. Independently innovative POS algorithm, energy-saving, stable and safe

2. CITY COIN payment has low latency and low fees

3. One-click currency issuance: No need to write code, just fill in the form to issue currency, it can be completed in one minute

4. Parallel sub-chain: Create an independent blockchain ecosystem, Program editing is simple and convenient, reducing development time and saving costs

5. C2C transactions: CITY COIN wallet C2C transactions, achieving completely decentralized transactions

6. Support cross-chain atomic transactions: adopted Wallet locking technology realizes atomic transactions between various digital currencies

This public beta mainly implements the following functions:

1. Independently innovate POS algorithms, CITY COIN blockchain 2.0 will strive for More nodes are deployed around the world;

2. CITY COIN payment has low latency and low fees

3. One-click currency issuance, parallel sub-chains, enterprise currency issuance, and blockchain application It's not difficult anymore.

We sincerely invite you to participate in the CITY COIN blockchain 2.0 public beta. This public beta will start on May 11th. The public beta period is expected to be 2 weeks. If there are no major bugs during the public beta period, files will not be deleted. Officially launched.

The CITY COIN R&D team will complete other core functions as soon as possible. Please pay close attention to the progress of CITY COIN. We will release other functions of CITY COIN blockchain 2.0 and improve them as soon as possible.

The launch of CITY COIN Blockchain 2.0 is of landmark significance to the development of CITY COIN, which means that CITY COIN is one step closer to the goal of becoming a simple, stable, and highly scalable blockchain network.

In the near future, CITY COIN will complete the registration of diversified assets on the chain, making digital assets on the chain more efficient, flexible and liquid, and truly allowing development teams and users to join the CITY COIN ecosystem. , creating a stable blockchain ecological environment.

CITY COIN will continue to work hard and work hand in hand with CITY COIN users to achieve the vision of decentralization.

2. Introduction to citycoin:

A cryptocurrency, also known as digital currency, citycoin is based on the core technology of blockchain 2.0 and the global financial industry's borderless payment. It is developed by South Korea and Japan. , City Blockchain Hong Kong Company jointly issued simultaneously.

3. Currency design concept:

1. Design positioning

1. Visual effects: technology, value, function, stability, image

< p>2. Design vocabulary: technological, international, graphic culture, decorative.

2. Design theme:

“Peer-to-Peer Network, City Currency

3.Composition interpretation:

1. The logo takes technology as the concept, gold color as the basis, and neural network as the basis to fully demonstrate the concept of "blockchain technology serving society with technological prosperity".

2. The structure of this logo uses circles, neural networks, and letters as the basic elements. It is easy to think of technology leading the world and the future. It is in line with the industry characteristics of the company; the "C" in the middle represents City currency, which can be transformed into a firm fist to show the company's culture and career development. It can be said that: firm and consistent, there will be no disadvantages.

3. The main color of this logo is gold, which represents stability. The structure uses brown lines, which represent technology, value, stability, and function; the circular dotted lines symbolize the rays of the sun, representing hope, vitality, and strength. , unity; the deformed "C" is surrounded by brown lines and gold, which represents technology, development, enterprising and firmness.

4. The logo culture is not only the current international design art style, but also a display of the contemporary style of contemporary enterprises. It communicates with the public in a simple and clear graphic language, allowing corporate information to be quickly transmitted. And form the precipitation of brand information culture.

citycoin style:

4. citycoin white paper: citycoin white paper