Ethereum home
do you remember what the consensus mechanism of bitcoin is? The consensus mechanism of bitcoin is pow. To put it simply, the more work you do, the higher the amount of computation you pay, the more likely you will be the first to find the correct hash value, and the more likely you will be rewarded with bitcoin
however, there are some defects in the pow of bitcoin, that is, it is too slow to process transactions, and miners need to constantly collide hash values through calculation, which is costly and inefficient. Friends who are interested in blockchain knowledge should see such a saying:
in order to make up for the deficiency of bitcoin, Ethereum has proposed a new consensus mechanism, called POS (this is the abbreviation of English, which means "proof of equity", also translated into "proof of equity")
POS simply means the same as its literal meaning: equity, equity. The more currency you hold, the more equity you have, the higher your equity
Ethereum's POS means that the more money you hold, the longer you hold it, the less difficult it will be to calculate and the easier it will be to mine
in the initial setting of Ethereum, Ethereum hopes to build a relatively stable system by using POW in the early stage, then graally adopt POW + POS, and finally completely transition to POS. So, it's true that the consensus mechanism of Ethereum is POS, but POS is only a plan or goal at the beginning of Ethereum's release. At present, Ethereum has not yet transitioned to POS, and the consensus mechanism adopted by Ethereum is still pow, that is, the pow of bitcoin, but it is slightly different from the pow of bitcoin
the amount of information here is a bit large,
the first information point is that the consensus mechanism currently adopted by Ethereum is also pow, but it is slightly different from the pow of bitcoin. So, what's the difference between the pow of Ethereum and bitcoin: in short, the mining difficulty of Ethereum can be adjusted, but the mining difficulty of bitcoin can't be adjusted. Just like our college entrance examination, because the teaching situation and the number of students in different provinces are not the same, so the college entrance examination is divided into national papers and provincial independent proposition
Ethereum said that I am in favor of the topic by region. Bitcoin said: No, it must be the same volume in the whole country. The difficulty is the same for everyone
the popular explanation is that bitcoin uses computer computing power to do a lot of hash collisions, enumerate various possibilities to find a correct hash value. The Ethereum system has a special formula to calculate the difficulty of each block. If a block is verified faster than the previous block, Ethereum protocol will increase the difficulty of the block. By adjusting the block difficulty, the time needed to verify the block can be adjusted
according to the Ethereum protocol, the dynamic adjustment method of difficulty is to make the time interval of creating new blocks in the whole network 15 seconds, and the network uses 15 seconds to create blockchain. In this way, because the time is too fast, the synchronization of the system is greatly improved, and it is difficult for malicious participants to launch 51% (that is, more than half) of the computing power to modify historical data in such a short time
the second information point is: in the initial setting of Ethereum, we hope to achieve the transition from POW to
POS through phased upgrade
dating back to 2014, at the beginning of Ethereum's launch, the team announced that the launch of the project would be divided into four stages, namely, Froniter, homestead, metropolis and serenity. In the first three stages, the consensus mechanism adopts pow (workload proof mechanism), and in the fourth stage, it switches to POS (equity proof mechanism)
on July 30, 2015, the first phase "frontier" of Ethereum was officially released. This phase is only suitable for developers. Developers can write smart contracts and decentralized application DAPP on Ethereum network, and miners begin to enter Ethereum network to maintain network security and get Ethereum coins. The leading-edge version is similar to the beta version, proving whether the Ethereum network is reliable or not
on March 14, 2016, Ethereum entered the second stage of "homeland". In this stage, Ethereum provides the wallet function, so that ordinary users can easily experience and use Ethereum. There is no obvious technology improvement in other aspects, but it shows that Ethereum network can run smoothly
in September 2017, Ethereum has reached the third stage of "metropolis"“ "Metropolis" is composed of Byzantine and Constantinople. The goal of this stage is to introce the hybrid chain mode of POW and POS, so as to prepare for the smooth transition from POW to POS. This is the latest popular "Ethereum Constantinople upgrade". In the Constantinople upgrade, Ethereum will make some changes to the underlying protocols and algorithms to lay a good foundation for the implementation of POW and
POS
how much reward will Ethereum get for mining? Miners who win the block creation competition will get the following income:
1. Static reward, 5 ethereums
2. The fuel cost in the block, i.e. gas, we talked about in the last issue
3. As a part of the block, it includes the extra reward of "Uncle block". Uncle is uncle of uncle, and each uncle block can get 1 / 32 of the mining reward as a reward, that is, 5 times 1 / 32, which is equal to 0.15625 ethereums. Here, let's briefly explain the concept of "TERT block". The concept of "TERT block" was proposed by Ethereum. Why should we introce the concept of TERT block? This also starts with bitcoin. In the bitcoin protocol, the longest chain is considered absolutely correct. If a block is not part of the longest chain, it is called a "orphan block". An isolated block is a block, which is also legal, but it may be found later, or the network transmission is slower, and it does not become part of the longest chain. In bitcoin, the solitude is meaningless and will be discarded later, and the miners who find the solitude will not receive mining related rewards
however, Ethereum does not think that isolated blocks are worthless, and Ethereum system will give rewards to miners who find isolated blocks. In Ethereum, isolated blocks are called "Uncle blocks", which can contribute to the security of the main chain. Ethereum's ten second block interval is too fast, which will rece the security. By encouraging the use of tertiary blocks, the main chain can obtain more security guarantees (because the isolated block itself is legal). Moreover, paying the tertiary block can also stimulate the miners to actively mine and actively use tertiary blocks. Therefore, Ethereum thinks that it is valuable.
The idea of Ethereum was born in 2013. Vitalik buterin ˙ When he was a programmer in the bitcoin community, he suggested to the core developers of bitcoin to develop a language for application developers to facilitate the development of various applications. Bitcoin core developers disagree. So God V decided to develop a new platform for this purpose
V God wrote the white paper of etheric currency in 2013, in which he explained the goal of building a decentralized program. In 2014, we got development funds through crowdfunding, so we developed the Ethernet system< (better digital currency trading platform "currency exchange")
since its birth, it has carried out four hard bifurcations so far
for the first time, in order to adjust the difficulty
released a stable version of "homeland" for the second time
for the fourth time, in order to prevent DDoS and rece weight
there is only the third hard fork, because of the hacker attack, and forced to fork. This is the Dao event
On July 30, 2015, v-god and Ethereum Foundation created the first smart contract platform and designed the Dao Ethereum contracton April 30, 2016, the Dao smart contract was officially deployed, and the world's largest crowdfunding was completed, reaching an amazing $150 million As an aside, the biggest crowdfunding event in time is EOS crowdfunding, which has reached an even more amazing $5 billion!)
on June 17, 2016, the Dao was attacked by hackers, who stole about 50 million US dollars of Ethernet currency, and the price also plummeted from US $20 to US $15, causing great harm to Ethereum. In order to recover the loss of investors, the community finally decided to hard fork
therefore, on July 20, 2016, at the block height of 1920000, the hard branching was successful, and the new chain is called Ethereum eth, while the original chain is now Ethereum classic etc
The sharp drop in the price of bitcoin will affect the stock market, and the funds that buy bitcoin and the blocks related to blockchain will fall e to the sharp drop in the price of bitcoin
with the continuous development of science and technology and the emergence of emerging instries, bitcoin, as an emerging instry, has attracted the attention of many people. Bitcoin has increased tens of thousands of times in more than ten years, which makes many people feel incredible. Bitcoin has also become a symbol of wealth in everyone's mind. The sharp drop in the price of bitcoin will have an impact on the stock market, especially on the bitcoin funds and blockchain technology, which are closely related to bitcoin. The sharp drop in bitcoin will also cause investors' losses
to put it simply: if you are only the holder of eth, you don't need to make any preparation for this upgrade.
No, all right. If block currency is used for trading in the game or something. It's likely to touch the penalty area. No contact< br />
1、 General situation of mineral resources (1) discovered minerals and ore procing areas by the end of 2005, 138 kinds of minerals have been discovered in the whole region, accounting for 80.7% of 171 kinds of minerals in China. There are 81 mineral resources (102 subspecies) with proven reserves. There are 87 oil and gas fields with proven resource reserves, including 10 large, 43 medium and 34 small ones. There are 993 proven non oil and gas procing areas, including 137 large, 210 medium and 646 small ones
During the Tenth Five Year Plan period, there was no change in newly discovered minerals compared with the end of the Ninth Five Year Plan period. There were 7 more minerals (natural asphalt, antimony, strontium, andalusite, pyrophyllite, basalt, perlite) with proven resource reserves, 13 more oil and gas fields with proven resource reserves, and 127 more non oil and gas procing areas with proven resource reserves. See table 3-1
Table 3-1 ring the Tenth Five Year Plan period, the situation of discovered minerals and proved ore procing areas in the autonomous region is as follows: (2) general situation of retained resources and reserves. Among them, natural gas, iron ore, gold mine, silver mine, cesium mine, andalusite mine, Glauber's salt mine, sylvite mine, asbestos mine, limestone mine for cement, bentonite mine, granite mine for decoration and marble mine for decoration increased by more than 19% (see attached table 10). See table 3-2 for the increase and decrease of main mineral reserves in 2005 compared with that in 2000
Table 3-2 increase and decrease of main mineral reserves in 2005 compared with that in 2000. See table 3-3
During the Tenth Five Year Plan period, 3652 new non oil and gas mineral exploration licenses were approved in accordance with the law. Among them, there are 239 energy minerals (223 coal mines), 528 ferrous metal minerals, 1322 non-ferrous metal minerals, 892 precious metal minerals, 62 rare, rare earth and scattered minerals, 571 non-metallic minerals and 38 water vapor minerals. It is one of the top three provinces (regions) that issue the most exploration licenses in China (Inner Mongolia, Shandong and Xinjiang in turn). See table 3-4 and Figure 3-1
Table 3-3 by the end of 2005, the reserve of main mineral resources in the autonomous region ranked among the top 10 minerals in China
there were 8 Sino foreign joint ventures and wholly foreign-owned mineral exploration enterprises registered in the autonomous region, with a total approved exploration license area of 1300 square kilometers
During the Tenth Five Year Plan period, 13300 mining licenses for non oil and gas minerals were approved in accordance with the law in the whole region (the licenses issued by land and resources management departments at prefectural and municipal levels are mainly small construction placer and clay minerals), of which 2224 were newly issued
Table 3-4 new license issuing situation of exploration license in the autonomous region ring the 10th Five Year Plan Period, 821 changes were handled and 1040 mining areas were demarcated. See table 3-5 and figure 3-2
Table 3-5 list of new mining licenses issued by the Department of land and resources ring the Tenth Five Year Plan period unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: unit: Unit, Collective enterprises decreased by 31.7 percentage points, limited liability companies increased by 15.4%, and private enterprises increased by 14.7%. The data show that the pattern of investment in mineral resources development has changed greatly
there are 19 Hong Kong and Macao businessmen and foreign-invested enterprises developing mineral resources in our region, accounting for 10.2% of the 187 Hong Kong and Macao businessmen and foreign-invested enterprises that have obtained mining licenses
The construction of mining right market is a new task, and there is no ready-made experience to follow. At the same time, it is an important task for geological and mineral administration. In order to establish a standardized, orderly, unified, open and reasonably competitive mining rights market, first of all, Hami, Altay and Tacheng regions, which are rich in mineral resources, high mining output value and well managed, are selected to carry out the pilot work of mining rights transfer(1) Altay is rich in metal and rare metal mineral resources, but the degree of geological work is low, the level of mineral resources reserves is not high, and there are many scattered small mines. Altay Bureau of land and resources tried to transfer the mining rights of scattered small mines by agreement, and achieved good results
(2) Tuoli County in Tacheng area is rich in granite resources, among which the variety of "tuolihong" granite is popular in the market. Because there are many mining sites, the quality and price fluctuate greatly, which affects the orderly development of mining economy in the county. Through the rectification, the mine that issued the license beyond its authority was closed down, the mining area was re planned, four mining rights were set up, and the price of 1.1 million yuan was used for bidding, which achieved good results
(4) the natural environment of Hami region is relatively good and the resources are rich. In August 2002, through investigation, Hami Municipal Bureau of land and resources selected the "Tianshan Baima" facing granite varieties with good market prospect and low transportation cost adjacent to the national highway, i.e. No. 1 and No. 2 orebodies of Liugou granite in Hami City for auction, and successfully determined the first hammer for the whole district to sell mining rights by auctionon the basis of the working experience of mining right agreement transfer and auction in pilot units, the Interim Provisions on the administration of mining right bidding, auction and listing transfer (new land and resources development [2002] No. 134) was formulated and issued to guide and standardize the paid transfer of mining right in the whole region
In order to cultivate and standardize the mining right market of the whole region and speed up the construction of the mining right market, according to the mineral resources law, supporting laws and regulations and the relevant requirements of the Ministry of land and resources, In 2001, the implementation plan for further rectifying the mining economic order and standardizing the mining right market in the autonomous region (new land and Resources Office [2001] No. 175) and the notice on strengthening the management of mining right transfer and cultivating and standardizing the mining right market (new land and Resources Office [2001] No. 244) were formulated, Land and resources departments at all levels are required to conct in-depth investigation and investigate illegal transfer of mining rights in accordance with the law, and promote market-oriented management of mining rights. In order to standardize the bidding, auction and listing of mining rights, increase the market allocation of mineral resources, and rece the transfer of mining rights by administrative examination and approval, the notice on stopping the transfer of mining rights of building materials minerals by administrative examination and approval (new land and Resources Office [2002] No. 459) was formulated on the basis of summarizing the pilot work of the transfer of mining rights, The establishment of the above documents and systems has played a positive role in the construction and standardized development of the mining rights market in the whole region Since the implementation of the administrative measures for bidding, auction and listing of exploration rights and mining rights on August 1, 2003, the whole region has actively studied and formulated the paid use system of mineral resources in line with the local reality, and further cultivated and standardized a unified, open, competitive, orderly and dynamic mining rights market system, "Two rights" bidding, auction, hanging "transfer has increased significantly, the degree of marketization of mining rights has graally improved, and breakthrough progress has been made in the construction of two rights market(1) listing transfer of mining rights of construction placer and clay ore. After the mining right market of the whole region started, the paid transfer of construction placer and clay mining right was first included in the agenda of mining right market construction. Taking advantage of the opportunity of mining order rectification and mining management in scenic spots, we first carried out the paid transfer of mining rights of sand and clay mines in Turpan. The non coal mines in Shanshan county were re planned, and only 6 sand and stone mines were set up in the county. Shanshan County Bureau of land and resources openly sold two sand and gravel mining rights in Sanchakou of the county town to the public by way of listing. The initial price of listing was 200000 yuan. After 15 and 29 rounds of listing bidding, the two mines sold for 2.44 million yuan, becoming the first sand and gravel mining right sold by way of listing in Xinjiang
(2) coal mining right auction. In order to further promote the construction of mining right market, according to the development planning of mineral resources and market demand, the mining right of Heishan coal mine in tuokesun County, with proved reserves of 25.66 million tons, thick coal seam and good mining conditions, was selected for auction. On November 18, 2002, the mining right of the mine was sold at 9 million yuan. After 33 rounds of bidding, it was sold by Xinjiang Guanghui granite mine development Co., Ltd. at a price of 49 million yuan, becoming the first coal mining right sold by auction in China (3) the important mineral exploration rights and mining rights are transferred to the public. In March 2004, according to the requirement of "emancipating the mind and achieving breakthroughs in the development of mineral resources in Xinjiang" put forward at the sixth (enlarged) meeting of the sixth session of the Sixth Party committee of the autonomous region, 13 exploration rights and mining rights of coal mine, gold mine, copper mine, iron ore, magnesite, potash and other important minerals were transferred to the public, of which 7 exploration rights and mining rights had a total starting price of 38.6 million yuan, The auction price was 183 million yuan. In particular, the meisbulake coalfield in Baicheng county (a total of three minefields) has a total starting price of 29 million yuan and an auction transaction price of 172 million yuan, which has strong repercussions in the society. At the same time, the people's Government of the autonomous region attaches great importance to the exploration right and mining right(4) the mining right evaluation unit is determined by "shaking beads". In 2005, in order to reflect the principle of fairness and justice and improve the transparency of mining right examination and approval, our district took the lead in determining the mining right evaluation unit by "shaking beads" in China
During the Tenth Five Year Plan period, we actively explored the transformation of the management mode of mining rights, made efforts to settle the unemployed workers and social stability, and promoted the economic development of the autonomous region. For example, a state-owned ceramic factory in Urumqi, with two small coal mines and one clay mine for ceramic making, was on the verge of bankruptcy in 2001 e to poor management. The staff and workers of the enterprise are living in distress and petitioning constantly, which has affected the local social stability. In accordance with the instructions of the leaders of the autonomous region, our department has invested 3.6 million yuan of the mining rights originally obtained free of charge by the enterprise as a share of the resettlement expenses of the enterprise's employees, introced new capital technology and new management methods, revitalized the assets, and revitalized the old enterprises. Another example is an old state-owned gold mine in Hami. Due to the chaotic operation and the depletion of proven resources, the enterprise went bankrupt, and the placement of workers became a major difficulty. After negotiation with the Department, Hami District auctioned the four mining rights obtained free of charge by the original enterprise and the fixed assets of the bankrupt enterprise, and finally concluded the transaction with 11.08 million yuan, which effectively protected and utilized the original mine resources, guaranteed the life of the enterprise staff, and accumulated experience for the disposal of the mining rights of the bankrupt enterprise (3) explorationsecondly, even though little friends can't figure out what bitcoin is like, after 7 p.m. the price of bitcoin once soared to $10429 , a good bull market means a sense of vision. Therefore, many small partners believe that the bull market of bitcoin is really coming, and they can't help but start one after another for fear that they will miss this opportunity to make money
then, just an hour after 7 o'clock, the company burst its position by more than $7 million, equivalent to more than $4410 in RMB. On the same day, more than 36000 small partners frantically snapped up bitcoin, setting a record of more than $7 trillion in 24 hours, equivalent to about $5 billion in RMB
finally, just when my little friends were happy to catch the last bus of the bull market, in the last 20 minutes on June 2, bitcoin fell from $10147 to $797 in six minutes , which was more exciting than taking a roller coaster. A proper coin circle, a day, a decade on earth
How do you feel about it< p> 1. The reason why bitcoin has risen so miraculously is once in a century, but its rise is reasonable. We need to know that because of the impact of the epidemic in the US economy, everything is possible2. For coin friends, whether they are novices or veteran, it is the best choice to choose to wait and see under such circumstances<
otherwise, it's not making money, it's giving moneyBTD is a blockchain project based on distributed cloud storage launched by bitmi foundation of Singapore. BTD is a kind of digital asset, which can be traded through BTD wallet, just like we need to register and real name authentication when we want to buy digital currency, such as bitcoin, Ethereum, etc. BTD real name authentication is confirmed by Alipay or WeChat's real name authentication system. You are what I am, not someone else who impersonate you or machine maliciously. Your Certified data will not be given to BTD. So, considering this point of view, there should be no danger. Now we need real name to buy a ticket, take a subway, and take a bus. Our real name information has flooded the whole network. How to ensure the security of our personal privacy information is a problem that can not be ignored I hope my answer will help you< br />