Decentralized wallet imtoken

1. 1. I've seen and used the first imtoken. Every year, imtoken loses money, and every time it says that it is a decentralized wallet. It sounds like a shirking of responsibility and decisively unloading
2. I haven't heard of the second one. I guess it's a small wallet from somewhere. I might run away one day
3. Some exchanges provide channels for exchange. You call customer service, customer service will teach you. You can try ZB
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2.

Imtoken is an influential mobile light wallet

aims to provide safe, easy-to-use and powerful digital asset management tools for users in the blockchain field

imtoken wallet supports eth, BTC, EOS, cosmos and other multi chain assets. DAPP browser takes you to explore the unlimited possibilities of a decentralized world

one identity, Multi Chain Management

manages multiple blockchain wallets through one digital identity, saying goodbye to the chaotic management tools

the new architecture supports eth / BTC / EOS / cosmos and other multi chain assets

secure transaction, within reach

with the help of blockchain intelligent contract, currency exchange can be directly completed on the mobile terminal without trusting a third party

private key self-contained security management

the private key is encrypted and stored in the sandbox file system of the mobile phone to fully ensure the asset security

provide a variety of private key backup strategies to prevent loss and theft

wallet is identity protection data privacy

the wallet account based on public and private key cryptography can become your sovereign identity in the digital world

personal data is encrypted by private key of identity and stored in decentralized storage network

* * DAPP application authorization interaction * *

uses intelligent contract technology to build distributed application browser

with digital identity, you can authorize yourself to interact with the third party DAPP without creating an account repeatedly

3. Ethereum is an open source public blockchain platform with smart contract function. It provides decentralized virtual machine (Ethereum virtual machine) to process point-to-point contract through its special cryptocurrency ether (also known as "Ethereum"). The concept of Ethereum was first proposed by vitalik buterin, a programmer, from 2013 to 2014, inspired by bitcoin, to the effect of "next generation cryptocurrency and decentralized application platform". It began to develop through ICO crowdfunding in 2014
Ethereum is not only a database, it also allows you to run programs in the trusted environment of the blockchain. Ethereum has built a virtual machine named EVM (Ethereum virtual machine) on the blockchain. EVM allows code to be verified and executed on the blockchain, providing guarantee for code to run in the same way on everyone's machine. These codes are included in the smart contract. In addition to tracking the account balance, Ethereum uses the same method to save the EVM status on the blockchain. All nodes process the smart contract to verify the integrity of the contract itself and its output.

4.

Plustoken wallet is not reliable

on June 29, 2019, plustoken, the largest blockchain investment project, was reported by users that it was unable to withdraw money, and then six founding team members were arrested in Vanuatu for suspected Internet fraud. In the previous article "tracking the asset transfer of plustoken with pictures and texts", the preliminary tracking statistics showed that there were 1203 BTC inflows into the exchange

At the same time, peckshield found that another transfer address at the beginning of 1m1tfsvb in the monitoring transferred 5575 BTCs through multiple decentralized and small amount transfer out, and it is not sure whether it will flow into the exchange. However, ETH, EOS, XRP and other currency assets have no abnormal trend

5.

XTT (Xin time token), based on Ethereum erc20 platform, is a decentralized digital currency carrier based on blockchain as payment technology

Ethereum is an open source public blockchain platform with smart contract function, which provides decentralized Ethernet virtual machine to process point-to-point contract through its special cryptocurrency ether (ETH)

the concept of Ethereum was first proposed by vitalik buterin, a programmer, from 2013 to 2014, inspired by bitcoin, to the effect of "next generation cryptocurrency and decentralized application platform", and began to develop through ICO crowdfunding in 2014

extended data:

background

bitcoin has created the first decentralized cryptocurrency, and has fully tested the feasibility and security of blockchain technology in more than five years

the blockchain of bitcoin is actually a set of distributed database. If a symbol bitcoin is added into it and a set of protocol is specified, the symbol can be transferred safely on the database without trusting a third party. The combination of these features perfectly constructs a currency transmission system bitcoin network

however, bitcoin is not perfect, and the scalability of the protocol is a deficiency. For example, there is only one symbol in the bitcoin Network - bitcoin, and users can't customize other symbols. These symbols can represent the company's stocks or debt certificates, which will lose some functions

In addition, a stack based scripting language is used in bitcoin protocol. Although this language has some flexibility to realize functions such as multi signature, it is not enough to build more advanced applications, such as decentralized exchanges. Ethereum is designed to solve the problem of insufficient scalability of bitcoin

reference source: network Ethereum

6. For example, if you want to transfer to eth, the address of Ethereum on the imtoken, click Ethereum to withdraw the currency on the lbank, and then enter the address. Other currencies are the same as above
thank you

7. The smallest unit of bitcoin is "cong"
1btc = 1000, 1 = 1000, 1 = 1000 Cong

8. In recent years, people think that the weather is getting hotter all of a sudden. The originally cool autumn doesn't begin until late October, and the hottest day in August has reached more than 40 degrees. Why? It turned out that it was human beings who caused the trouble
with the rapid development of human high technology, the side effects of science are graally reflected. Global warming is an example. Hot weather, in the heat bubble air conditioning has become a new "hobby", but people have thought, air conditioning will bring any negative impact? The answer, of course, is yes. Air conditioning emissions contain a lot of methane, which is also a gas that causes global warming. At the same time, air conditioning will waste a lot of electricity, so try to avoid using air conditioning, appropriate< Another reason is: carbon dioxide! Car exhaust and factory exhaust contain a lot of carbon dioxide, and carbon dioxide is most likely to lead to the greenhouse effect (that is, global warming). Now the number of cars is graally increasing. According to relevant statistics, by the 21st century, there are 700 million cars in the world. A lot of exhaust seriously affects us, cough, throat inflammation... The most important thing is global warming. According to statistics, the per capita carbon dioxide emission of the United States has reached 20 tons a year! China's annual carbon dioxide emissions per capita emissions are 2.51 tons a year! The environment around us is changing badly
the more important reasons are as follows: forests have been sharply reced, water resources have been destroyed, ecological chain has been seriously damaged, a large number of land is barren, and water pollution is serious. According to statistics, 10% of the world's river water has been polluted, and fresh water supply has become a problem. At the same time, e to the extensive use of minerals, the burning CO2 gas has led to air pollution, and the ozone layer has been seriously damaged, The ozone holes in the north and south poles have exacerbated the deterioration of the environment. Such a vicious circle will eventually lead to a serious impact on people's lives
what is the tragedy? Obviously! The weather is heating, sea level is rising, glaciers in the north and south poles are melting, coastal cities and island countries are flooded. All these have seriously affected the survival of human beings. Experiments have proved that sea level will rise by more than half a meter in the next 300 years, which is still the most optimistic data. In another seven years, global warming will continue irreversibly. What's more, as the Arctic ice melts and rainfall intensifies, a large amount of fresh water flows into the North Atlantic, destroying the Mexican warm current. Once the Mexican warm current is cut off, the temperature in northwest Europe will drop by as much as 5-8 degrees, which may lead to a new ice age! You must have seen the movie the day after tomorrow. The scene in the movie is just a true portrayal of our earth after hundreds of years: tornado, ice breaking, sharp drop in temperature, ice storm, freezing rain, earthquake, flood, tsunami... This is not a crazy fantasy. If human beings do not stop destroying the environment, it will become a reality! Global warming is not only a hot weather, but also a lot of negative effects
in order to save the earth, we should try our best to: do not turn on the air conditioner, use recycled environmental protection paper, abandon meat (steak) food (cow digestion contains nitrous oxide, if you become a vegetarian, the annual carbon dioxide emissions will be reced by 1.5 tons!) Do not use plastic bags, take the bus... Every bit of life. In fact, environmental protection is not difficult. As long as you support environmental protection, it is your best gift to the planet. It doesn't need too much words. As long as everyone takes action, it will be a powerful force! Today, Japan, Britain, the United States and other countries have taken action. Although we have taken action, it is not enough for a great country with a population of 1.3 billion
therefore, global warming is the only way for all mankind to save the earth. Some people may say: can we not migrate to other planets? The answer is yes, but how many people can it hold? Some people say: the funds to control the greenhouse effect are too large, which is a sky high price for finance. However, if we keep procrastinating, the final result will be that our earth is beyond recognition, not to mention finance, even our own life is hard to protect! Therefore, environmental protection should not only stay in words, but should really be paid with action!

9.

First of all, remember whether the mnemonic words are at risk of loss. If it is possible to be known by others, please create a new token wallet at the first time and transfer the original wallet assets

if the wallet account in the cornerstone stage cannot be transferred, please contact the project party in time and ask the other party to assist in the transfer of token assets. If you are sure that it belongs to your own deletion or damage and is not known by others, you can choose to note the private key and log in with the private key

mnemonics is another form of plaintext private key, which was first proposed by bip39 proposal. Its purpose is to help users remember complex private key (64 bit hash value)

mnemonic words are generally composed of 12, 15, 18, 21 words, which are all taken from a fixed vocabulary, and their generation order is also based on a certain algorithm, so users don't have to worry about randomly entering 12 words to generate an address

although both mnemonic words and keysore can be used as another form of private key, different from keysore, mnemonic words are unencrypted private keys. Anyone who gets your mnemonic words can easily take control of your assets

So after users backup mnemonics, they must pay attention to three points:

1. Try to use physical media backup as much as possible, such as writing on paper with pen, and try not to take screen shots or photos and put them in networked devices to prevent being stolen by hackers

If one or two words are copied wrong, it will bring great difficulties to retrieve the correct mnemonics

3. Keep the backup mnemonics properly and take anti-theft measures

users can use the backup mnemonics to re import imtoken and generate a new keysore with a new password to modify the wallet password

extended data:

the essence of using imtoken to create wallets is to generate a set of mnemonics randomly. Due to the characteristics of decentralization, imtoken does not keep the privacy information of users' wallets. So after generating mnemonics, users must keep them by themselves. This group of mnemonics can dece the private key, the public key and the address of the wallet

according to the above instructions, if we want to find the mnemonic words, we need to know the generation process of mnemonic words: first, we make a 128 bit random number, and then we check the random number by 4 bits to get a 132 bit number, and then we divide it by 11 bits, so that we have 12 binary numbers, and then we use each number to look up the word list defined by bip39, So you get 12 mnemonics

calculate the number of mnemonics that can be generated, bip39 mnemonics thesaurus contains a total of 2048 words, 12 words in each group. For example, by analogy, the amount of sand on earth is about 1, followed by 18 zeros. If we can generate one million mnemonics per second, we can generate 3.1536 e + 13 mnemonics per year, which takes about 1.6715937e + 26 years to traverse all mnemonics. Therefore, brute force cracking is impossible

if all mnemonics and private keys are lost, they can't be recovered by brute force cracking, because imtoken's decentralization can't be recovered from us. However, if the mnemonic words are lost and the private key is still kept, the use of the wallet will not be affected

source: Official Website of imtoken - why is there no way to retrieve the missing mnemonics