Blockchain technology for online shopping

1. 1. What is blockchain? In a word
A: blockchain is an encrypted database chain, that is, the transaction data in multiple timestamps / events are encrypted and linked together, and the data can not be tampered with or shared
2. Performance and logic:
A. external operation forms: bank deposit and withdrawal, remittance, account in and out, shopping, currency issuance, capital transaction, etc
B. internal logic processing (software program): after human operation, the data will be encrypted first and then stored in the database. After the program, the data will be divided into regions, such as the data in the event and time stamp will be classified and put together into a region. Multiple events and data in timestamps are associated to form a blockchain. The encrypted data can be shared, but not tampered with
C. forms of sharing: querying personal information, auditing, etc. Query permission / sharing permission: different permissions can query different data. For example, the bank can query the information of all people, and the indivial can only query the indivial
3. Most of the examples are different, but the logic processing ideas are the same, but the implementation methods and operations are different
4. Blockchain: it has the characteristics of encrypted data, tamperable data and shared data
5. Blockchain Technology: the technology of encrypting, partitioning and sharing data with editing programs
there are suggestions for guidance
application fields: finance, it, commodity sales, online shopping, etc.

2. They will record proction information, logistics information, sales information and other data on the chain. It's equivalent to a person who has an ID card, but the ID card is a code. When you go in, you can see complete information. Family name, even "parents" can know, but also can't change! With this kind of blockchain for anti-counterfeiting traceability, even the labor cost of playing Jia is saved.

3. Technology is infinite, and there is a lot of space for blockchain to empower e-commerce. The trust mechanism, decentralization and token system of blockchain have brought disruptive changes to the buyer and seller of e-commerce and the supply chain.

4. SEC uses the trust value generated by the transaction records of goods and encourages the sharing of reward token to transfer trust. For example, the user buys a cake from a wechat friend in the circle of friends, which generates transaction records. If the cake is delicious and cost-effective, the user can share and recommend it to others, and get a token reward for it. This is based on the transaction records to proce a credit transmission
it doesn't involve scoring, it only involves the credit relationship between the two parties after the completion of the transaction. The transaction was broadcast in the SEC network and stored on the chain, indicating that it was approved of the transaction. The process of sharing with friends is similar to mining, and the token incentive is obtained through sharing
to solve a very simple problem is proct based trust transfer. But this is the key, because the whole network is full of trusted people and trusted transactions, so you can trust them to trade. Our application of blockchain is very light, more flexible, faster iteration to meet the changing needs, and more in line with the current development situation of blockchain.

5.

Yes

blockchain can solve the problem of mutual trust in transactions

< H2 > smart contract solves the problem of mutual trust in transactions

since the beginning of bitcoin, blockchain technology has been developing continuously. In 2014, Ethereum further developed a variety of new functions of smart contract technology. Smart contract is linked in the form of digital, & quot; Once generated, the information recorded in the blockchain will be permanently recorded and cannot be tampered with; It can solve the trust problem of "strange trust"

ulord has the property of smart contract, which introces the design concept of gas, but different from Ethernet gas, every operation consumes gas. Compared with the gas concept of ether, ulord adopts a more simplified and abstract method. The resources and sites that users publish on the ulord consume the resources on the ulord network. Therefore, when users publish resources or sites, they need to bind a certain amount of ulordtoken. With the growth of block height, the ulordtoken will be consumed graally. Users need to fill in a new ulordtoken at the address corresponding to the consumed site to ensure the ownership of the domain name. At the same time, through the side chain technology, it can be compatible with the Ethernet virtual machine, publish smart contracts, and allow users to publish their own tokens. There is a certain proportion of exchange relationship between tokens and ulordtoken. Ulord allows users to customize the release of their own site services, and by issuing their own tokens, they can operate their own site

< H2 > ZK snark technology to protect transaction privacy

ulord will adopt the most mainstream privacy protection ZK snark technology to protect transaction privacy. In the ulord blockchain, creating an effective transaction includes the following three things:

1

2. The sender proves that he is the "holder" of the currency by means of authorized signature

The input of transaction is equal to its output

the work of proving that money has not been spent before is done by the ledger itself, which does not require the sender to do any work. The sender only needs to prove that he is the holder of these currencies, and he wants to send these currencies by means of electronic signature through the private key corresponding to the address. In order for the signature to be verified, the sender's address must be public. Correspondingly, the receiver must disclose the receiving address to complete the transaction process. In the use of ulord, it is simple to verify that the input and output of the transaction are equal, because the number of transmissions is fully revealed

6. Bitbox summarizes that blockchain can solve several problems of Internet of things. Rece the operating costs of the Internet of things. Solve the problem of privacy protection of Internet of things. Building a new business model with blockchain

7. Solve the problem with blockchain Technology