How to issue certificates in blockchain

1. Basically, the principle is the same. Take baopin.com as an example, baopin.com's video blockchain authentication is actually DAPP. First, it takes a screenshot of the video's key frames per minute, then transcodes it into a string of unique numbers, and then uploads and records it into the Ethereum blockchain.

2. Users get bitnation & quot; through blockchain on their official website It has a significant impact on the identity authentication system

3. We can understand it as a kind of negotiable certificate. It can represent a kind of identity, a kind of right, a kind of value carrier, or a kind of relationship link. The application of blockchain in the field of Bitong certificate, such as tickets, points, contracts, certificates, point cards, securities, permissions, qualifications and so on, can be used in the circulation of blockchain. At the same time, it can be consumed, verified and used in real economic life
the core advantage of blockchain technology is decentralization, which can realize point-to-point transaction, coordination and cooperation based on decentralized credit in a distributed system without mutual trust by means of data encryption, time stamp, distributed consensus and economic incentive, so as to solve the high cost and low cost of centralized institutions Low efficiency and data storage insecurity provide solutions
the application fields of blockchain include digital currency, token, finance, anti-counterfeiting traceability, privacy protection, supply chain, entertainment, etc. with the popularity of blockchain and bitcoin, many related top domain names have been registered, which has a great impact on the domain name instry
taking the tourism instry as an example, blockchain applications mainly focus on tourism travel, tourism community reviews, digital identity management, credit consumption management, tracking pilot's professional certificate and qualification, loyalty plan of hotels and airlines, reservation management and consumption points management. In addition, blockchain also has applications in finance, games, entertainment and other fields.

4. I took the examination after I signed up for the study at the Hashimoto business school. They are junior, intermediate and advanced. Different levels of learning have different content and depth. Elementary is the basic knowledge of the introction of popular science, very simple.

5. Considering all aspects, if you are not familiar with blockchain, don't follow suit. What you often say is very beautiful, the trap is also unfathomable, and you will fall miserably in the end! That's a good thing. I don't want to make a fortune with my own muffled voice, but I also need so much news and war to publicize and agitate
a person who is engaged in a major he likes and depends on his skills can be practical, stable and confident at any time, which can last for a long time
it's hard to be sober and unmoved in the face of temptation, but we should also stick to it. From user: Mr. Bu
thank you for your invitation
blockchain is a new instry rising in recent one or two years. The heat is pretty good. Some hot money has gone in. It's just that there are still many differences in the understanding of policy disputes, the practicability of blockchain technology, and the realization of implementation
I personally take a cautious attitude

as for the skill training of blockchain, I haven't seen any information of professional institutions carrying out such training and ecation. Even if there is, it is recommended to have a thorough understanding

if you want to research, I suggest that you consider securities funds, securities fund analysts, sponsors (the securities bull's mess)
I hope it can help you. User: Mr. Xing

6. A friend of mine was studying at the hashton business school and got a certificate there.

7. Log in to Baopin's personal Center - My Video - and you can see the video certified by blockchain

8. I took the exam, but I took the exam after I signed up to study at the hashton business school. They are junior, intermediate and advanced. Different levels of learning have different content and depth. Elementary is the basic knowledge of the introction of popular science, very simple, pass the exam also issued a certificate.

9.

Rc20 token standard (erc20 token standard) is a standard used to create token through Ethereum. According to the erc20 specification, a smart contract can be written to create a "interchangeable token". It is not mandatory, but following this standard, the token created can interact with many exchanges, wallets, etc. it has now been widely accepted by the instry

erc20 token standard was first proposed by Ethereum developer Fabian vogelsteller in the open source community. Later, Ethereum founder vitalik (known as "V God") wrote the first version of the document, which was called "standardized contract API" at that time_ Contract_ APIs

following erc20 token standard, smart contracts can be written. The token methods it needs to implement include: optional name, symbol, decimals, balance of, transfer, transfer from, approve, and allowance. The event responses it needs to implement include transfer, approve

in addition to erc20, Ethereum also focuses on erc721. Different from erc20, erc721 is a non fungible token standard (NFT)

The general syndromes of

erc20 are interchangeable and homogeneous, while the general syndromes of erc721 are not interchangeable and heterogeneous; Erc20 can be subdivided infinitely, while erc721 can not be subdivided because its minimum unit is 1

in June 2018, erc721 was officially accepted by Ethereum community and became the final standard. The popular cryptokitties followed the erc721 standard

the Xueshuo innovation blockchain Technology Workstation of Lianqiao ecation online is the only approved "blockchain Technology Specialty" pilot workstation of "smart learning workshop 2020 Xueshuo innovation workstation" launched by the school planning, construction and development center of the Ministry of ecation of China. Based on providing diversified growth paths for students, the professional station promotes the reform of the training mode of the combination of professional degree research, proction, learning and research, and constructs the applied and compound talent training system