1. 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
if such technology wants to be put into application, the biggest problem is the "Impossible Triangle problem"
that is, scalability, decentralization and security cannot be achieved at the same time, and only two of them can be achieved
most of the existing public chain projects in the market are difficult to put into use on a large scale
2. Only the circulation of
digital currency can proce value. The DGC is the only one to promote the circulation first and then. DGC is a kind of digital cryptocurrency, which has two characteristics: decentralization and open source code. Just like 100 yuan RMB, each money has a different code. A total of 500 million shared coins were mined, each with a different code. The shared currency is gram
3. The great Magellanic nebula is about 180000 light-years away, the Magellanic nebula is 210000 light-years away, and the bright star on the lower left is the base of the ship α Old man star, a resident of the galaxy, is only 310 light-years away. Both big and small clouds are in the southern half of the sky, and the sphere is about 20 meters away from the southern pole ° Right and left. Located at the junction of the two constellations, Xiphophorus and Yamagata, the cloud spans the two constellations and occupies 8 °× seven ° The area of the sky is equivalent to the apparent area of more than 200 full moons. The wheat cloud is located in Rhododendron, occupying 4 °× two ° It's the area of 30 full moons. The distance between the barley cloud and the wheat cloud is about 20 meters ° In the southern hemisphere, the big and small wheat clouds hang high near the zenith of the southern sky all the year round. They never fall below the horizon. As we see in the northern hemisphere, the Big Dipper will never fall below the horizon. They are a pair of treasures of Nantian. Unfortunately, most of the northern hemisphere can't see them. In the Spratly Islands area of China, they are only found near the southern horizon.
4. Bitcoin is digital currency version 1.0, and Ethereum is digital currency version 2.0. Add smart contract on the basis of bitcoin, so Ethereum is a digital currency and an "Android system" in the blockchain. Many currencies and applications are based on Ethereum!
5. DAPP is the abbreviation of decentralized application, which translates into decentralized application, also known as distributed application. The reason why it is considered to open the era of blockchain 3.0 is that DAPP is different from the app we currently recognize. What is the difference? Of course, its particularity is not limited to "d", but lies in its background, which is blockchain! According to the current popularity of blockchain, everything related to it has become very advanced
here is a very straightforward way to explain DAPP, that is: take out the app that we currently develop relying on IOS and Android system, throw it on the blockchain system, and combine with the smart contract, it becomes DAPP.
6. Honeybird, badger, Anemone, hermit crab, aphid, ant, thousand birds, crocodile
7. This can't be generalized! Some Chinese medicine is very reliable, where he is, you can find him (her)! Not necessarily the hospital of traditional Chinese medicine or the people's hospital!
