360 company's blockchain cat
Just at the beginning of this month, a game of raising cats with blockchain suddenly became hot all over the world. As far as I know, this is a very simple game. If it is put into the game application market, it will sink to the bottom immediately. To put it bluntly, this is a nurturing game of buying cats, breeding, breeding and buying cats
but why does such a simple nurturing game cause a worldwide upsurge? I don't think it's because the game is interesting and the image is cute
the most important point is that the game has profits
players can pay for cats, pay for kittens (a small fee) and borrow others' cats to have kittens (a little more); Then you can sell your own cat for breeding kittens, or you can sell it directly to get profits without a cap
the sale of cats is completed in the form of auction on the website. The currency of transaction is ether currency, which can be converted into cash in foreign exchanges. Therefore, under the premise that users can continue to consume (kittens) and trade (CATS), blockchain kittens become an asset that can generate cash flow returns
secondly, the return is speculative
the setting of blockchain cat is that two cats can have kittens, but each cat has several elements, including generation, gene tag, etc. Gene tag represents scarcity and scarcity represents value; The higher the generation, the faster the reproction, so it is also positively related to the value
the generation of gene tags is a black box, which is an opaque part of the game (most of the games are open source and open in the white paper). For now, at least, there is no clear analysis of how to get a cat with scarce labels. Therefore, every time a kitten is born, it is possible to give birth to a valuable rare breed, and even the program settings of the game itself may have random parameters
this makes the whole game full of uncertainty and speculation. A speculative game, like gambling, is easy to attract people's attention and capital investment
secondly, blockchain itself has been a hot topic in recent two years. Many people are willing to try new things, before many people are difficult to understand blockchain technology. Now there is a simple and easy-to-use application for everyone to participate in the block
although the popularity of this game has little to do with the blockchain technology, it is a very successful example of the application of blockchain technology
Web link yes, this is the 360 mobile phone assistant address
Web link point connection is OK
Recently, Vulcan team of 360 company found a series of high-risk security vulnerabilities in EOS, a blockchain platform. It is verified that some of the vulnerabilities can remotely execute arbitrary code on EOS nodes, that is, they can directly control and take over all nodes running on EOS through remote attacks
In the early morning of May 29, 360 reported this kind of vulnerability to EOS official for the first time, and assisted it to repair the security risks. The person in charge of the EOS network said that the EOS network will not be officially launched until these problems are fixed 
EOS super node attack: the virtual currency transaction is completely controlled
in the attack, the attacker will construct and publish a smart contract containing malicious code, and the EOS super node will execute the malicious contract and trigger the security vulnerability. The attacker then uses the super node to pack the malicious contract into a new block, resulting in the remote control of all nodes in the network (alternative super node, exchange recharge withdrawal node, digital currency wallet server node, etc.)
because the system of the node has been completely controlled, the attacker can "do whatever he wants", such as stealing the key of the EOS super node and controlling the virtual currency transaction of the EOS network; Obtain other financial and privacy data in the participating node system of EOS network, such as digital currency in the exchange, user key stored in the wallet, key user information and privacy data, etc
What's more, an attacker can turn a node in the EOS network into a member of a botnet, launch a network attack, or become a free "miner" to extract other digital currency
source: Science and Technology News
1. According to different scenarios, design systems and attribution, blockchain is generally divided into three categories: public chain (public service), private chain (focusing on the application of an enterprise or instry) and alliance chain (generally belonging to an instry or a supply chain)
2. It is basically divided into three kinds of applications:
blockchain applications of well-known enterprises: (Netease blockchain cat (game), thunderbolt chain customer, storm's cool broadcast cloud (BFC points), Renren's social rrcoin, Meitu's e-commerce + blockchain, 360's router, cheetah and other well-known enterprises)
start up companies based on blockchain (Ethernet wallet, Babbitt, fire coin)<
social public applications (the bank has set up a research and development laboratory)
current market situation and development of blockchain:
currently, blockchain applications in the market still focus on issuing "token", realizing "point management"
, pet games, etc., with relatively single functions, and the data of blockchain related apps is even less, and more of them are financial apps.