The implementation system of blockchain is absolutely safe and r
each node on the blockchain can verify the integrity and authenticity of the account book to ensure that all transaction information is not tampered with, true and effective
every node on the blockchain keeps copies of all transaction information. When the number of data and participants on the blockchain is very large, the cost of modifying information will be very high. At least 51% of the computing power of the whole network is needed to modify information, and the modification cost may far exceed the expected revenue
when the information of some nodes is maliciously tampered with, other nodes on the blockchain will find the information that has not formed a "consensus" in a short time and maintain and update it.
Unsolicited
blockchain combined entities are reliable, and there are already applications of blockchain combined entities
as for blockchain + real estate, there is Beizhu based on ulord
Beizhu is a blockchain real estate leasing platform based on ulord. Beizhu uses blockchain technology to improve the efficiency of space use from financial investment. The combination of blockchain and intelligent hardware reces people's living cost and improves people's living experience; Beizhu realizes the unification of the three identities of service providers, consumers and platform builders in the leasing instry
in addition to blockchain + real estate, many other places have also been applied to blockchainbitcoin
1. Bitcoin is the first project that should go to the blockchain, and it is also the most familiar blockchain application. In 2009, Nakamoto put forward the concept of bitcoin, according to the idea of Nakamoto, designed and released open source software and constructed P2P network on it. Bitcoin is a kind of P2P digital currency
2. Youxiang
is based on the world's first decentralized experience value sharing platform of ulord public chain, Youxiang ushare. At present, ushare has been launched on major application platforms
ushare will build a deep content social platform with high-quality experience as the media by taking high-quality experience sharing as the bridge. Through the multi-dimensional experience exchange between users, users and opinion leaders, opinion leaders and opinion leaders, you enjoy ushare has opened up the growth channel of users and the voice channel of opinion leaders, realized experience circulation, value income, social networking, indivial growth, and realized high-quality content social networking
based on the ulord public chain, ushare adopts a decentralized storage mode, which reces the operation and maintenance costs of the platform; Ushare uses the key information of the article to link, which maintains the creator's ownership of the content. On the issue of content review, Youxiang ushare adopts the combination of artificial algorithm and voting mechanism to better screen high-quality content for users,
at the same time, Youxiang ushare applies the certificate system of ulord, which can get incentives and share creative benefits for the whole people when Youxiang ushare likes and comments on value content, publishes high-quality experience and shares the experience of playing weird
3. Network totem
Network totem is an original image service platform of network blockchain, which was officially launched on April 11, 2018. The proct uses the self-developed blockchain right registration network, with double authentication of trusted time stamp and chain stamp to generate right DNA for each original image, which can truly realize the traceability, reprinting and monitoring of original works
4. Blockchain electronic invoice
on December 11, Shenzhen Taxation Bureau of the State Administration of Taxation opened the wechat payment platform and launched the "wechat payment blockchain electronic invoice" function
in the morning of November 1, after handling the precious metal purchase business for customers, China Merchants Bank Shenzhen Branch successfully issued the first blockchain electronic invoice for customers through the system directly connecting with the blockchain electronic invoice platform of Shenzhen Taxation Bureau, marking that China Merchants Bank has become the first pilot bank of blockchain electronic invoice in China, opening the era of blockchain electronic invoice in the field of financial services
5. Health energy chain
based on the first block chain of national fitness mutual promotion and incentive community in ulord, health energy chain has entered the internal test. Through the token economy of blockchain, social interaction can promote and motivate each other, and fitness can also make money, making fitness more valuable
6. Tmall double 11
ant blockchain uses blockchain technology to trace the origin of tmall double 11.15 billion commodities
Seeing some answers to the debate on the definition of blockchain, I suddenly realize that my answer to this explanation principle has always been directed at bitcoin. There is no specific and unique answer in the instry between the definition of blockchain. Here I first summarize the characteristics of "blockchain" according to the papers I read:
1; Hash chain & quot There are several nodes participating in the system operation (distributed)
3. Reach a consensus on the consistency of basic data (consensus agreement / algorithm) through a certain protocol or algorithm
since bitcoin is currently one of the most typical and influential applications of blockchain, it will be much easier to understand how bitcoin uses blockchain before understanding other forms of blockchain applications
bitcoin is a typical blockchain system, which can be studied carefully
The hottest things this year are "bitcoin", "Ethereum" and all kinds of cryptocurrencies, so hot that even aunts and uncles are about to start talking about them. It is no exaggeration to say that 2017 is the first year of the development of cryptocurrency and blockchain technology
as the underlying technology behind bitcoin, the concept of blockchain has only been mentioned in the past two or three years, although as early as 2009, "Nakamoto Tsung" released bitcoin. After this wave of digital currency boom, the concept of blockchain technology has really entered the eyes of all walks of life. I'm afraid it's too early to mention the wide application of blockchain technology, which is still in a very early stage of development. However, e to the arrival of the boom, many technicians and teams have contributed their efforts to build some blockchain concept projects“ Needless to say, as the first application of blockchain technology, bitcoin of "Zhongben cong" has realized the function of distributed ledger, which can realize the first decentralized value transmission of human beings. It can be said that it is "blockchain 1.0". Then Ethereum invented the smart contract, which extended the function of blockchain technology to build applications. It is well deserved to be defined as "blockchain 2.0". However, the blockchain concept projects that came out later did not realize this leap forward role, but only improved to a certain extent at the application level, so they can not be called "blockchain 3.0"
so what is "blockchain 3.0"? Maybe bitcoin OS is the answer: an operation system that is completely based on blockchain technology and follows the concept of blockchain technology. In the 1980s, before Microsoft released the windows operating system, personal computers and Internet technology were still in a non systematic state and could not be popularized. After the release, personal computers were allowed to enter ordinary people's homes, making PC and Internet universal application procts. Recently, bitcoin OS team announced the implementation of the bifurcations of bitcoin and Ethereum on Christmas day, so as to officially publish the plan of developing blockchain OS
anyone who knows a little bit about blockchain technology knows that bitcoin solves the problem of account book, while Ethereum is a smart contract to realize application expansion. Later, a team will launch a distributed storage project. But these systems with only a single functional mole are not "operating systems". The traditional definition of operating system is a huge management and control program, which includes five management functions: process and processor management, job management, storage management, device management and file management. In fact, the OS based on blockchain does not need to change all the five functional blocks into distributed ones, as long as the parts related to the external transmission of value and information can be decentralized and distributed. Therefore, the blockchain operating system should have at least three functions of "account system management, computing resource management and storage resource management", which can realize distributed ledger, edge computing and edge storage. Although it is still too early to define the instry standard in this way, bitcoin OS team is committed to realizing the blockchain OS possessed by these three functional blocks first, and then improving it through iteration
according to the bitcoin OS team, the name "bitcoin OS" is actually "blockchain OS", which is named after "bitcoin", which is also a tribute to the inventor "Satoshi Nakamoto". At present, from the technical details given by the bitcoin OS team, we may be able to see some aspects of this "blockchain 3.0" project
firstly, the management function of the account book system supports locating the ownership of resources according to the account ID, such as the private key; Computing resource management can obtain corresponding computing resources according to the demand, support edge computing, and share distributed computing power. In addition, storage resource management can use storage resources according to the demand, and support edge storage. Compared with bitcoin OS, Ethereum only supports account system and smart contract, which can not meet the distribution of distributed computing tasks. Ethereum only supports the fair execution of contract code, let alone the management of storage resources. So Ethereum is only a custom calculator
in addition, it is worth mentioning that bitcoin OS self customized enhanced smart contract. It supports two modes, which are more flexible and efficient
1. Central computing mode: the outgoing node is responsible for executing the smart contract, and both the incoming parameters and the output results support sipfs to be stored in the storage node
Distributed computing mode: ordinary nodes can claim computing tasks, input parameters and output results support sipfs storage to storage nodesfinally, we also need to mention the built-in sipfs super interstellar file system of bitcoin OS. Sipfs can realize the decentralized storage of technical input parameters and output parameters. At the same time, the file has a life cycle, and the DNA description of the file descriptor is recorded on the blockchain. The file descriptor of sipfs does not exist on the blockchain, but it will be stored in a separate file descriptor data file. After the end of the file life cycle, the blockchain will automatically delete the file descriptor, Realize the intelligent slimming of blockchain
"blockchain 3.0" is worth looking forward to, and bitcoin OS team, as the vanguard, is worth paying attention to and encouraging. We are looking forward to the real blockchain operating system
1. The point-to-point system allows members to join freely without middleman, and nodes can interact freely
2. The point-to-point system can speed up information processing and rece costs by replacing middleman
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that every node has all bitcoin's complete blockchain data--- yes