What to do if the height of blockchain blocks is not confirmed a

1. This is not a rigid rule. It has nothing to do with blockchain. There is a relationship between the algorithm of this currency. The confirmation method of each currency is different, so this is not a rigid rule
the confirmation times of bitcoin are different from that of Ruitai coin, Laite coin and doggy coin.

2. Jinwowo analysis believes that blockchain mainly solves the trust and security problems of transactions. Once the information is confirmed and added to the blockchain, it will be permanently stored. Unless more than 51% of the nodes in the system can be controlled at the same time, the modification of data on a single node cannot be realized. Therefore, the data stability and reliability of blockchain are very high
e to the use of Distributed Accounting and storage, there is no centralized hardware or management organization, the rights and obligations of each node are equal, and the data blocks in the system are jointly maintained by the nodes with maintenance function in the whole system.

3. Hello, of course.
blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. Blockchain is an important concept of bitcoin. It is essentially a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains a batch of information about bitcoin network transactions, Used to verify the validity of its information (anti-counterfeiting) and generate the next block. In fact, the original English version of bitcoin white paper [1] does not use the word blockchain, but uses the word chain of blocks. In the earliest Chinese translation of bitcoin white paper [2], chain of blocks was translated into blockchain. This is the earliest time when the Chinese word "blockchain" appeared.

4. I choose Chinese currency! Low operation delay, idle can also save money mining EOS, very suitable.

5. DGC is really unreliable. It's been 20 days since the withdrawal. I think it's really unreliable. Sorry to die

6.

Deflection refers to the linear displacement of the axis of the member perpendicular to the axis or the central plane of the shell perpendicular to the central plane when the force or non-uniform temperature changes

the deflection of slender body (such as beam or column) refers to the displacement of each point on its axis in the normal plane of the axis at that point. The deflection of thin plate or shell refers to the displacement of each point on the middle plane normal at this point. The rule that the deflection of each point on the object changes with position and time is called deflection function or displacement function

the deflection observation of building includes the deflection observation of building foundation, building main body and independent structure (such as independent wall and column). For high-rise buildings, when there is a large concentrated load on a small area, it may lead to the settlement of the foundation and buildings. The uneven settlement will lead to the inclination of the building, the bending of local components and the generation of cracks

extended data

1. Deflection calculation formula: ymax = 5ql ^ 4 / (384ei) (EI is the bending stiffness of beam under uniform load q)

deflection is related to load size, member section size and material physical properties of member

Deflection the linear displacement of the centroid of the cross section along the direction perpendicular to the axis ring bending deformation is called deflection γ Expression

rotation angle the angle at which the cross section turns relative to its original position ring bending deformation is called rotation angle θ Expression

The traditional bridge deflection measurement mostly uses dial indicator or displacement meter to measure directly, which is still widely used in bridge maintenance, old bridge safety assessment or new bridge acceptance

7. Seven misunderstandings about blockchain
blockchain based systems have broad prospects in the future, but we need to be very clear about what blockchain can do. Imagine the blockchain technology in the next 20 years, its impact may be as big as the Internet
however, it is shocking that we mainly see today that the project seems to be based on decentralized design, but in fact there are some misconceptions about blockchain
if we want technology to continue to move in the right direction, we need to turn this craze into proctive and realistic expectations, so as to rece the possibility of the supply chain falling to the bottom. Once it falls to the bottom, it may be abandoned in the corner with meaningless proof of concept
let's take a look at the seven misconceptions of unrealistic expectations for blockchain:
misconception 1: highly scalable
compared with traditional (server based) trading methods, blockchain deployment does not have real scalability, and the current trading time depends on the slow party. They are only scalable for certain types of transactions, such as transactions with small payloads and transactions close to certain limits. You can't just pile up information on the blockchain
Myth 2: it is absolutely secure
although the blockchain is based on encryption standards, the method to ensure privacy is completely outside any blockchain standards and implementation. Only encryption experts can really understand and verify blockchain integration. However, each implementer has the responsibility to ensure security, so this approach is largely the same as the management of financial transactions in the old era
mistake 3: trustworthy
the blockchain ensures the integrity of transactions and information, otherwise anything stored in the blockchain cannot be trusted. You need to make sure that the parties that store the facts in the blockchain are trustworthy and that the facts are true to determine that they are truly trustworthy. This governance model allows multiple parties to be jointly and severally liable for the infrastructure, and requires secure access to store facts in the blockchain
myth 4: you can put anything in the blockchain
blockchain is a protocol represented by code, which is not defined according to any standard. There is no standard body to provide rules or guidance for the implementation of sanctions
generally, you can only handle small payloads, and you still need to reach an agreed standard among all participants so that anyone can understand what is stored
myth 5: you can express anything in a smart contract
although this is technically feasible, in practice, blockchain is limited to simple and easy to understand use cases. Smart contracts are very complex in nature. By design, once released, you cannot modify or repair them. They contain very complex interactions and irreversible results
myth 6: if you don't like public chain, please choose private chain
private chain is not a channel to obtain privacy or access restricted information. In fact, you can even think that private chain should not be an open option. Nevertheless, enterprise blockchains may not be able to realize any inherent advantages of blockchain technology, and privately developed blockchains may lack the community and academic review necessary to ensure their attributes
myth 7: the size of the community doesn't matter
the blockchain procts promoted by the community are being forked by private players in all aspects, and they strengthen their role in various ways. However, a large community composed of users, users, scholars and implementers is the only force to ensure the validity of password attributes. Only the open source blockchain with the largest community and installation base will last. The rest can be regarded as experiments in the laboratory, of which 99.9% will die
a smart technician will move forward based on use cases and a set of first principles in his mind. First, there may never be a blockchain to manage all of them. Two different use cases require different blockchains. Some participants are many, some are few, some need strong privacy around facts, and some are fully transparent
considering all the above, what we can do together now is to innovate, tackle real business problems, and initiate and promote proof of concept to better understand the power of blockchain.

8. The normal continuous combat effectiveness of men is 20-30 minutes,
to enhance combat effectiveness, the maintenance of artillery is very important,
usually in a secret place to absorb extreme sunlight,
(that is to do sunbathing)
can't you see that artillery always hide in a dark corner
when you absorb enough extreme light,
your continuous combat effectiveness will naturally increase a lot.

9. Hello, your problem, I seem to have encountered before, the following is my original solution ideas and methods, hope to help you, if there is a mistake, please forgive me! The process of signing all
e-contracts on the e-signing platform is generally as follows:
how to sign an E-contract first step: real name authentication
real name authentication is a kind of verification audit for the authenticity of user data. Help to establish a sound and reliable Internet credit foundation< How to sign an E-contract step 2: sign an E-contract online
the Ministry of Commerce promulgated the "E-contract online process specification", which encourages everyone to sign an E-contract by using the E-contract platform, and uses the e-signature technology to ensure the security, integrity and effectiveness of the contract signing, transmission and storage. The e-signature and encryption technology are adopted. Once the contract is signed, the, After signing the contract, it can be stored in a secure cloud storage system, solidifying the evidence and providing evidence in case of dispute. The most important thing is that the evidence provided by the third party E-contract platform is very strong and easy to be accepted by judges
to sign an E-contract on the E-contract platform, as long as you upload your E-contract and use your exclusive e-signature, in order to verify that your e-signature is exclusive to you, encrypt the login, reserve the mobile phone random dynamic password, and ensure that the signing behavior is controlled by the signer, the E-contract will be signed
how to sign an electronic contract step 3: send the contract
next, you can send the signed contract to the other party, and the first time you sign it will be sent to the other party for signing, and the sending time will also be recorded accurately
how to sign an E-contract step 4: the other party signs the contract
when the other party receives the contract you sent, it will receive a notice. At this time, the other party only needs to log on the platform to sign the received E-contract, verify it by SMS, and complete the effective signing. In this process, the platform E-contract will also issue CA certificate through the national authority, and ensure the uniqueness of the certificate fingerprint, so that the tampering is invalid and the authenticity and validity of the signature can be identified. Thank you very much for your patience. If you have any help, please accept it. I wish you a happy life! thank you!

10. The regional chain is hot at present. But is it really feasible. Or whether the project is a requirement or a pseudo requirement. Take a look at the market situation and research