Topological settlement and purchase of blockchain

1. Double chain structure blockchain Technology: mainly for the single chain to make an explanation, because the single chain structure can not effectively realize the application of the entity, can not effectively realize the application of the value management of human labor time, so give it a second value chain. Double strand structure technology is inspired by DNA structure, and wasian is based on double strand structure blockchain technology

2. The procurement process includes information collection, inquiry, price comparison, price negotiation, evaluation, sample request, decision, requisition, order, coordination and communication, expediting, purchase acceptance and payment.

3. Shopping mall shopping mall shopping mall is still in the development stage, and now it is still young. Block chain mall also needs great technical strength and accumulation. Now the frontier is to develop more than a year's online shopping mall, which is also available soon after the official account.

4. This is absolutely pyramid selling. It's very popular in Xianyang, Xi'an. It deceives a lot of people. My mother was cheated. I know a few upper class swindlers. They are always called Yang Yonggang and Li Lintao

5. Mine pool refers to:
as the computing level of the whole bitcoin network continues to rise exponentially, a single device or a small amount of computing power can not get the block reward provided by bitcoin network
after the computing power of the whole network has been improved to a certain extent, the low probability of getting rewards has prompted some geeks on "bitcoin talk" to develop a method that can combine a small amount of computing power and operate jointly. The website established in this way is called "mine pool"
extended data:
the existence of the mine pool reces the difficulty of mining bitcoin and other virtual digital currencies, reces the threshold of mining, and truly realizes the concept of bitcoin mining that everyone can participate in
but its disadvantages are also very obvious, because computing power is connected to the mine pool. As a mine pool, it will have a huge amount of computing power resources. In the bitcoin world, computing power represents the bookkeeping right, and computing power is everything. If the computing power of a single mine pool reaches more than 50%, it will be easy to launch 51% attacks on bitcoin and other similar virtual digital currencies, The consequences are very terrible:
the mine pool can make the mine pool with 49% of the remaining computing power have no harvest, instantly quit the competition and go bankrupt. The mine pool's computing power exceeds 50%. If 51% attack is launched, it will easily occupy all the effective computing power of the whole network
source of reference: network mine pool

6. According to the analysis of jinwowo network technology, the block structure has two very important characteristics: first, the transactions recorded on each block are all the value exchange activities after the formation of the previous block and before the creation of the block, which ensures the integrity of the database
secondly, in most cases, once a new block is added to the end of the blockchain, the data records of the block can no longer be changed or deleted. This feature ensures the rigor of the database, that is, it cannot be tampered with.

7. Firstly, we need to know that blockchain is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism and encryption algorithm. Secondly, as for the composition architecture of blockchain system, jinwowo Group believes that it is composed of data layer, network layer, consensus layer, incentive layer, contract layer and application layer

1. Data layer: encapsulates the underlying data block and related data encryption and timestamp technologies

2. Network layer: includes distributed networking mechanism, data propagation mechanism and data verification mechanism

3. Consensus layer: it mainly encapsulates 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

4. Contract layer: it mainly encapsulates all kinds of scripts, algorithms and smart contracts, which is the basis of the programmable characteristics of blockchain; At present, jinwowo in Southwest China has taken the lead in big data research with blockchain as the underlying technology, and also provides big data services with blockchain as the underlying technology

5. Application layer: encapsulates various application scenarios and cases of blockchain. In this model, chain block structure based on timestamp, consensus mechanism of distributed nodes, economic incentive based on consensus computing power and flexible and programmable smart contract are the most representative innovations of blockchain technology

8. Blockchain
and
logistics supply chain
applications are now landing, and the blockchain + mode is very popular. Changsha Information Instry Park has built a SMIC blockchain service platform project, which is for enterprises to collect on the chain, to build a blockchain
Instry Alliance
.