EEA and Ethereum
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 token on theblockchain is called ether, and the code is eth. It can be traded in many foreign exchange markets of cryptocurrency, and it is also the medium used to pay transaction fees and computing services on Ethereum
the concept of Ethereum was first proposed by vitalik buterin, a programmer, from 2013 to 2014, inspired by bitcoin, with the general meaning of "next generation cryptocurrency and decentralized application platform", and began to develop through ICO crowdfunding in 2014. As of February 2018, Ethernet is the second highest cryptocurrency in market value, second only to bitcoin
extended data:
Ethereum platform has no characteristics and value. Like programming languages, it's up to entrepreneurs and developers to decide what to use. However, it is clear that some application types benefit more from the functions of Ethereum than others. Ethereum is especially suitable for those applications that automatically interact directly between points or promote group coordination activities across networks
for example, coordinate the application of point-to-point market, or the automation of complex financial contracts. Bitcoin enables indivials to exchange money without the help of financial institutions, banks or governments. The impact of Ethereum may be more profound
in theory, any complex financial activities or transactions can be automatically and reliably carried out on Ethereum with coding. In addition to financial applications, any application scenario with high requirements for trust, security and persistence, such as asset registration, voting, management and Internet of things, will be affected by Ethereum platform on a large scale
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about the variability of blockchain
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eth, if most people agree to modify the chain, that is, variability, then they can modify the blockchain records and contracts
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etc, blockchain records and contracts can't be modified, that is, they can't be tampered with
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here are the advantages and disadvantages of the two methods
The advantage of -
variability is that people can make timely changes to make the right decisions. Therefore, modifying the specification is more practical than finding loopholes
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non modifiability means that no matter how smart people are at that time, it is impossible not to make mistakes. Therefore, when problems arise in this scheme, it is best to find and solve the loopholes through the existing legal framework
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differences in development
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eth, whether it is intentionally arranged or since its birth, the core decisions of blockchain are made by Ethereum foundation with the participation of the community and most of them are developed by it
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etc, the decision-making of blockchain is mainly decided by the feedback of three loose, collaborative teams with community participation
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in any case, anyone can put forward improvement suggestions for the two kinds of blockchains. This is the benefit of open source, and it is also very common. You will find that developers of the two chains communicate with each other through GitHub and reddit. I hope to improve the frequency of communication in order to achieve the common goal
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about compatibility
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at present, the two kinds of blockchains are compatible with each other. Contracts or applications written by eth can be applied on etc, and vice versa
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eth, focusing on ewasm, is committed to providing a platform for more and more developers, while the issue of contract security is secondary, such as viper
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etc focuses on making developers create more secure contracts, such as viper, iohk research, at the cost of consuming the number of potential developers
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it's obvious that both chains can accept each other, regardless of whether their wishes are the same or not. My view is that the number of developers is not necessarily related to the quality of the proct
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about the transaction speed
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eth, the average is 25 seconds, which will be shortened after upgrading
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etc, with an average time of 14 seconds, maintained at 10-14 seconds after upgrade, according to ecip-1010 and ecip-1036 protocols
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about the block capacity
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eth, with the daily trading volume of eth graally reaching 5 million, the block capacity is graally saturated. This situation is similar to the recent transaction cost of bitcoin. This problem can be solved by expanding the block capacity by increasing the default fuel limit
ETC， At present, there is still a lot of room for block capacity. As more and more people accept etc, the block capacity will also increase, just like eth
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about community
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eth, mainly discuss on reddit
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etc, mainly discuss on slack
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about monetary policy
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eth, the planned supply is growing steadily, resulting in an average inflation of 3% in eth blockchain in its life cycle
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etc, before 2025, inflation will reach 3%, and then the total supply will reach 200 million etc, and then there will be deflation
As for the regional distribution of trading volume, China accounts for 20%, South Korea 25% and the United States 25% In etc, China accounts for 50%, South Korea 25% and the United States 10% About securities, at present, investors do not have the option to trade securities. Recently, one of eth's ETFs, trading open-end index funds, was denied by the regulators -
etc owns etc trading trust, which allows investors to own etc instead of the asset itself
etc (Ethereum Classic) is a bifurcated currency that Ethereum hard bifurcates after 1920000 blocks, and its function is very similar to Ethereum. Etc adheres to the concept of decentralization and supports the consensus mechanism of blockchain guarantee. Etc firmly believes that once the blockchain starts to run, its development direction will not be controlled by any central team, but will be determined by the consensus of the people participating in the whole network and the consensus of the computing power of the whole network
the Ethereum blockchain hard branching in July 2016 aims to transfer the Dao funds stolen by hackers to an account controlled by investors, and let the old transaction records be forgotten by history. Most Ethereum developers are involved in the reversal, as are exchanges, startups and other members of the ecosystem. A few days later, the project returned to normal. But not everyone wants to forget the old record. As a result, a small number of miners continued to use the original blockchain as a protest. They described the hard fork as a capital withdrawal for the abandoned project of the Dao. So Ethereum classic (etc) was born
2. Detailed parameters
Chinese Name: Ethereum classic English Name: Ethereum classic English abbreviation: etc
developer: Ethereum Classic team core algorithm: ethash consensus proof: POW
release date: 2016 / 7 / 20 block time: About 15-17 seconds / block
total currency: fixed at 210 million, up to 230 million, Every 5 million blocks decelerate by 20%, and the first proction rection is expected to be in December 2017
main features: independent cryptocurrency
Typical uses include: polymer modification, hot melt adhesives and sealants, flexible hoses and common pipes, laminated sheets, multilayer films, injection molded and extruded parts, and wire and cable mixtures
EEA copolymer is compatible with all olefin polymers, such as VLDPE and LDPE. LLDPE, HDPE and polypropylene. EEA is mixed with other polyolefins to proce a kind of proct with special molus and desired EEA characteristics. The impact resistance of high molus polymers, such as polyamide, polyamide and polyester, was significantly improved by adding EEA copolymer. EEA copolymer is also used to proce hot-melt adhesive procts, which has a wider temperature range than ethylene copolymer. EEA hot melt adhesive has some unique comprehensive properties, including high shear failure temperature and low temperature toughness; And excellent adhesion to nonpolar matrix. In the field of thin film applications, EEA copolymer is used as the bonding layer of multilayer films, and mixed with other polymers to improve the low temperature toughness and stress fracture resistance. EEA copolymer has a high capacity for fillers. Semiconctor films and pipes made from EEA and carbon black are used as packaging materials for microchips, glycerine explosive bags, and a variety of antistatic applications in hospitals. According to FDA regulations, EA content in EEA copolymers contacting with food should not exceed 8%. However, copolymers with higher EA content can be blended with other olefin polymers, so that EA content in the mixture is less than 8%, meeting FDA regulations. At the same time, the mixture must meet the restriction of FDA 177.1520 on polyolefin extract
EEA pa-809 physical property table data performance characteristics copolymer
lubricated
dispersible composite appearance black form particle material processing method composite
extrusion
injection molding
the ethyl acrylate part provides flexibility and polarity for the copolymers, usually accounting for 15-30% (WT) of the polymer. Compared with ethylene vinyl acetate (EVA), EEA has higher thermal stability and belongs to non corrosive degradation procts, so it can adapt to a wider range of processing conditions
processing plants and reprocessing plants often mix EEA with olefin polymers or engineering polymers to proce procts that combine the advantages of the two resins
chemistry and properties
EEA resin is proced by free radical polymerization in a specially modified high pressure polyethylene reactor. When the content of ethyl acrylate increases, the copolymer will become stronger, softer and more elastic. The polarity of resin with high content of ethyl acrylate increases the ability of surface to absorb ink and has adhesive property< Compared with other polyolefins such as LDPE, EEA has strong resistance to stress fracture, impact and bending fatigue; High friction coefficient; Good low temperature performance and lower melting point. When the content of EA increased, the upper limit temperature of the copolymer decreased slightly and the transparency decreased
EEA on the market is usually unmodified sheet resin, but there are also special mixtures containing a lot of fillers, such as flame retardant mixture and semiconctor material used as cable coating
processing
EEA copolymers can be processed by standard extrusion designed for LDPE with similar melt index. Blow molding and injection molding equipment. The typical extrusion melting temperature is 320 ℃ ° F The temperature range of injection molding is 280-400 ℃ ° F. The specific value depends on the melt index and the content of ethyl acrylate. When EEA copolymer is processed by extrusion, blow molding or injection molding, additives are usually not needed
uses
typical uses include: polymer modification, hot-melt adhesives and sealants, flexible hoses and ordinary pipes, laminated sheets, multilayer films, injection molded and extruded parts, and wire and cable mixtures
EEA copolymer is compatible with all olefin polymers, such as VLDPE and LDPE. LLDPE, HDPE and polypropylene. EEA is mixed with other polyolefins to proce a kind of proct with special molus and desired EEA characteristics. The impact resistance of high molus polymers, such as polyamide, polyamide and polyester, was significantly improved by adding EEA copolymer. EEA copolymer is also used to proce hot-melt adhesive procts, which has a wider temperature range than ethylene copolymer. EEA hot melt adhesive has some unique comprehensive properties, including high shear failure temperature and low temperature toughness; And excellent adhesion to nonpolar matrix. In the field of thin film applications, EEA copolymer is used as the bonding layer of multilayer films, and mixed with other polymers to improve the low temperature toughness and stress fracture resistance. EEA copolymer has a high capacity for fillers. Semiconctor films and pipes made from EEA and carbon black are used as packaging materials for microchips, glycerine explosive bags, and a variety of antistatic applications in hospitals. According to FDA regulations, EA content in EEA copolymers contacting with food should not exceed 8%. However, copolymers with higher EA content can be blended with other olefin polymers, so that EA content in the mixture is less than 8%, meeting FDA regulations. At the same time, the mixture must meet the restriction of FDA 177.1520 on polyolefin extract.
EEA resin is proced by free radical polymerization in a specially modified high pressure polyethylene reactor. When the content of ethyl acrylate increases, the copolymer will become stronger, softer and more elastic. The polarity of resin with high content of ethyl acrylate increases the ability of surface to absorb ink and has adhesive property
compared with other polyolefins such as LDPE, EEA has strong resistance to stress fracture, impact and bending fatigue; High friction coefficient; Good low temperature performance and lower melting point. When the content of EA increased, the upper limit temperature of the copolymer decreased slightly and the transparency decreased
EEA on the market is usually unmodified sheet resin, but there are also special mixtures containing a lot of fillers, such as flame retardant mixture and semiconctor material used as cable coating