Blockchain webpage tamper proof

3. With the help of blockchain technology and alliance chain node, wangchain technology integrates and writes the information of commodity raw material circulation process, proction process, commodity circulation process and marketing process into the blockchain, and uses the tamper proof attribute of the blockchain to realize the whole process traceability of one thing one code

4. Generally speaking, blockchain is an "encrypted distributed synchronous updating accounting technology"
characteristics of blockchain:
the core potential of blockchain lies in the transparency, openness, traceability and non tampering of information
origin of blockchain:
blockchain technology originated from a special currency, and its essence is to create a decentralized monetary system
it's hard to say whether we can change the world in the future, but the future is very clear.

5.

- yinlian answer:

blockchain can realize the traceability and non tampering of data, because it is based on the distributed database established by cryptographic links, thus forming non tamperable data sources. Therefore, in the whole process of procts from proction to circulation, complete information records can be achieved, and comprehensive data information can be provided for regulatory authorities, so that they can more efficiently complete proct quality inspection and data interconnection and sharing. In this process, blockchain can solve four problems:

first, information can not be tampered, consensus can be reached and trust can be built. In the network node composed of each participant, data records are formed in the business process, and the information of proct logistics, warehousing and proction, including raw material source, processing and assembly, is stored in the blockchain network to provide data information of each link for regulatory departments, cooperative enterprises or institutions

Second, the process is open and transparent. In the process of business process, the proct's anti-counterfeiting and circulation can be realized by implanting an identification chip into the proct and registering it on the blockchain, so that it can have a digital identity, and then record all the information of the digital identity, such as source and flow, through the account book maintained jointly, so as to achieve the verification effect

Third, save cost and improve efficiency. Under the condition of confidentiality, the data records on the blockchain are stored, transmitted, verified and analyzed by the regulatory department, and transferred among different departments, so as to achieve unified voucher, whole process record and enterprise credit reference, which can effectively solve the problems of multi-party participation, information fragmentation and repeated audit in circulation

Fourthly, information sharing. The circulation of enterprise proct certification depends on the interconnection of public data resources among departments and institutions such as commerce, customs, quality inspection, instry and commerce, banking, etc. under the review environment of blockchain construction, all departments can obtain information synchronously, establish credit evaluation mechanism based on supply chain, and organically connect various supply chain platforms, so as to improve the credit rating, credit record, risk warning, risk management, etc Information disclosure and sharing of illegal and dishonest behavior

the disadvantages of traditional anti-counterfeiting traceability are very obvious, and anti-counterfeiting traceability has always been an important scenario in blockchain application, such as yinlian, which also starts from the anti-counterfeiting traceability scenario, hoping to build a commercial blockchain

compared with the traditional centralized anti-counterfeiting Traceability Technology, yinlian uses the underlying technology of blockchain, and the merchants proce their own anti-counterfeiting codes to remove the trust problem of cheating by the intermediate anti-counterfeiting merchants. The main process is as follows:

6. 1. Blockchain is an anti tampering, shared and traceable distributed ledger technology. Anti tampering lies in that the modification of a single node can only be recognized through the consensus of other nodes; Traceability means that the whole account book of the blockchain can only be written in, not deleted, and all modification records will be left marks on the whole chain; Sharing means that the account book of the whole blockchain is transparent to multiple nodes in the distributed network
hash function in blockchain is the key to anti tampering, and hash algorithm is a one-way cryptographic mechanism to ensure that transaction information is not tampered in blockchain. After receiving a piece of plaintext, hash algorithm will transform it into a short and fixed hash data in an irreversible way. So block association has but is not limited to tamper proof
2. Quantum secure communication is divided into quantum cryptography communication, quantum teleportation and quantum dense coding. It can be divided into classical communication and quantum communication. The former mainly transmits quantum key, while the latter can be used for quantum teleportation and quantum entanglement distribution. When quantum communication is eavesdropped, although the eavesdropper can't get the information, the communication is interrupted, which affects the normal communication. His anti eavesdropping is at the cost of interrupting the communication, so it doesn't seem as good as the legend.. At present, there are still many unsolved problems in quantum communication, such as short transmission distance, relay difficulty and so on
3. In secure communication, technology competition and complementarity are mutual reference and common development. In secure communication, blockchain should belong to network layer, and quantum communication should belong to physical layer. Therefore, there should be no competition result of who will replace who.

7. It's useless to just delete, because there is no solution to the vulnerability
the suggestion is to redo the system, and then find the guardian God to reinforce the system security for you, so as to completely plug the loopholes.

8. I believe many people hope to do some part-time work at home to increase their income, especially Baoma. They hope to earn some money at home to subsidize their families. Today I share some of my online part-time jobs
1. Network experience (the one with the most income in my part-time job at present)
many people don't understand how to make money from network experience. In fact, it's very simple. You can register and open an account, and then you can collect some pictures and texts online and publish them. I'm just carrying them. I don't need to think about what to write, just them all, More time may be spent looking for material. How to find, official account and other non network series can be, of course, many will decide that no original, no gains, never mind, you insist.

compared with the current income at the beginning,
it may be a few cents at the beginning. With the increase of the number and level, the income also increases. I have three accounts for more than a year, and now I have experienced the highest level of Dashen Lv2. With a fixed income of more than 10 yuan per day, plus red envelopes, good pen farming and other subsidies, I can add up to more than 1000 yuan a month. Before that, I had to punch in, I can earn more than 2000 yuan a month, but now it's less. Basically, I talk for more than an hour every day, and I send 5 articles to each number, with a total of about 15 articles. It's relatively easier<

the subsidy for clocking is gone
2. E-commerce platforms take orders
for goods taken on e-commerce platforms (mainly: Taobao, Jingdong, pinoo, etc.), sellers will give commissions or small gifts such as data lines, paper towels, umbrellas and so on. I usually add business cards shared by everyone in the group, and some of them will give you tasks, Accumulated for a period of time, there are fixed businesses looking for you. Now I have fixed those shops to do tasks every month to earn some small gifts and commissions. Generally, I earn about 100 yuan a month. If you have enough leisure, you can do more. A friend of mine, Bao Ma, said that he could earn more than 600 yuan a month with three titles. What leisure and perseverance he had
anyway, I can't stand the comparison of goods and screenshots operated by Xiao, which wastes my time. However, students and Baoma are the main force in the group. Generally, this is more suitable for idle people, but novices should also pay attention to fraud prevention. Generally, shops have margin and sales volume, and it's basically OK to shoot physical goods. Many businesses return immediately, and the seller is the vulnerable group

3, Taobao customer commission
many people do Taobao customers will establish a website or group to promote, I believe many people will be pulled into the coupon group, Business Internal group and so on, this is what they promote to earn commission. Ordinary people can not maintain the group, or help friends to buy or their own shopping to earn some commission, save money is more practical. I usually recommend procts that I think are good to my friends. It's OK to help them earn some commission, and it's also hard to earn a lot of pocket money to help friends, relatives and neighbors buy on their behalf
4. Information reading software
now many information apps have been launched to exchange points for money by reading articles. I have tried more than ten apps, and many one yuan tasks are easier to complete. Then I basically rely on apprentices to earn points to earn rewards. I can't earn much money by reading on my own every month. I have tried more than ten apps on four micro signals, and basically I earn rewards for apprentices, I earned more than 100 yuan in two days, no