Your blockchain that can be deployed on EOS
No, the general big exchanges will do the mapping for you. EOS can be understood as enterprise operation system, which is a blockchain operating system designed for commercial distributed applications. EOS is a new blockchain architecture, which aims to extend the performance of distributed applications. Note that it is not a currency like bitcoin and Ethereum, but a token based on the EOS software project, known as blockchain 3.0
extended information:
previously, e to the super node election campaign of EOS, almost the whole currency circle participated in it: exchanges, mining pools, big V came in droves, and even the well-known overseas "Wenzhou Gang" also ran with billions of assets, which once pushed the price of EOS up. Non trumpet data show that in the middle and late March, EOS was in a low hovering period. On March 19, the price was only US $4.02, and the total market value of EOS was US $3 billion
in April, more teams and indivials continue to pour into the annual drama of the currency circle. On April 11, antpool ant mine announced to join. On April 20, baoerye arrived. On April 24, bitfinex and huocoin mine also announced to join the super node election. For a while, EOS has formed a strong momentum, boosting the price up all the way. By April 30, the price of EOS has increased to US $20.05, with a market value of US $16.5 billion
in May, the situation began to change, consistent with the downturn of digital currency market, and EOS also started a downward trend. By May 31, the price of EOS had fallen to a small bottom of only $11.94. In the following week, as the original date of main online line, June 8, approached, the price of EOS bucked the trend and rose to $14.29 on that day
unexpectedly, on June 8, e to the negative vote of one third of the participating nodes, the main network was not successfully launched, so it had to be postponed. On June 10, it was launched again, but failed again because the online voting rate was only 1.77%, which did not reach the 15% voting rate required by the main network
this situation quickly transmitted to the market price. Within a few days, the price of EOS went down again, from US $14 to US $13 and US $11. On June 14, the price of EOS "broke through ten" and fell to US $9.68. As of June 28, the price of EOS had dropped nearly 60%
EOS is a public chain system at the bottom of blockchain developed by block. One, which is specially designed to support decentralized application of Commerce, and its code is open source
bitcoin is called blockchain 1.0 because it opens up the world of digital cryptocurrency and takes a decisive step from 0 to 1
Ethereum is known as blockchain 2.0, because it provides Turing complete virtual machine that can run smart contracts, bringing unlimited possibilities
and EOS is called blockchain 3.0, why? Two words: performance
The positioning of EOS is the slogan of its home page:English: the most powerful infrastructure for decentralized applications
Chinese: the most powerful decentralized application infrastructure
EOS expects to be an enhanced version of Ethereum, a high-throughput intelligent contract platform
although Ethereum has complete functions, it is limited by its design choice. Due to the block output speed of 15 seconds, the transaction throughput is far from large-scale practical level, which is only about 30 ~ 40tps (transaction / s). EOS, on the other hand, has chosen a different technology route, with the goal of achieving a considerable million TPS, which is quite attractive considering visa's actual processing speed of 1700tps
consensus mechanism of EOS
the reason why the throughput of bitcoin and Ethereum is so low is that they are constrained by the application scenario they envision and the consensus mechanism they choose for the scenario - both of them assume that the environment in which the system runs is totally untrustworthy, so they both adopt the consensus mechanism of proof of work
consensus, as the name suggests, is to reach a unified understanding of something - for blockchain, something refers to the confirmation of the transaction - any node to submit a transaction needs everyone's approval
the pow mechanism currently adopted by bitcoin and Ethereum is the design of the legendary Nakamoto Tsung. Under this mechanism, in order to obtain the bookkeeping right and digital currency reward, miners need to constantly dig for the compliant hash value, and confirm and package the transaction data through the consensus of hash value. POW has no access threshold, and any node has equal rights to participate in bookkeeping. Of course, the probability of winning is related to computing power:
the price of ram is based on Bancor algorithm, that is, it is regulated by market supply and demand: if the supply of ram exceeds the demand, more EOS certificates are needed to buy ram, At this time, more EOS certificates can be obtained by selling ram
memory is a consuming resource, which cannot be redeemed and can only be bought and sold. Take the issue of currency on EOS as an example. At present, the issue of currency requires 20m of memory. An EOS can buy 20KB. According to the current storage price, issuing a currency will consume 1000 EOS. This is the source of EOS memory consumption
Course Overview
this course is for friends who are interested in the development of EOS decentralized application. The course covers the core concepts of EOS DAPP development, the development and deployment of smart contracts, and how the front page interacts with EOS blockchain. Finally, a complete DAPP development based on react and EOS is completed
Chapter 1: enter the world of EOS
to understand the core concepts of EOS, such as positioning and characteristics, consensus mechanism, payment computing model, etc
Chapter 2: Hi EOS
understand the overall framework of EOS node software and the functions of node server, wallet server and command-line tools, learn how to configure and start EOS node server and wallet server, and preliminarily understand the use of command-line tools
Chapter 3: wallet, key and account
understand the three core concepts related to personal identity in EOS: wallet, key and account, and learn how to use command-line tools to create wallet, key and account
Chapter 4: development and interaction of smart contracts
understand the concept and function of smart contracts, learn how to write and compile EOS smart contracts, and learn how to deploy and interact with contracts using command-line tools
understand the persistence mechanism of state in EOS smart contract, and learn to use multi index table to save contract state
Chapter 5: issue your own tokens
learn the principle and implementation mechanism of issuing tokens on EOS, and master how to use command-line tools to issue, transfer and view the balance of tokens through practical operation
Chapter 6: use code to interact with smart contract
understand the principle of interaction between application and EOS blockchain, and learn to use JSON RPC interface and eosjs encapsulation library to access EOS blockchain
Chapter 7: DAPP development of practical notes
comprehensively use EOS knowledge, use react to complete a decentralized application of EOS notes, and learn the complete process from requirement analysis to code implementation
The above course address is as follows: EOS tutorialbitcoin was born to realize a point-to-point cryptocurrency system, while Ethereum realized Turing's complete virtual machine on this basis, making the blockchain a computing platform, and EOS is a computing system by nature. The smart contract on EOS is similar to various programs on our computers. Even the EOS token itself is a contract
generally, we use some kind of cryptocurrency and need an address. When collecting money, others just need to transfer money to this address. However, there is no concept of address in EOS. If users want to use the EOS blockchain, they must create an account on the EOS chain to use it
the creation of this account is actually a contract transaction, which requires an account that can be used to create. This is also a factor that has a high threshold for the use of EOS blockchain, because at the beginning of the launch of EOS, there were few accounts available, and there were no tools (such as wallet) for users to create accounts
moreover, creating an EOS account consumes ram. According to the soaring price of ram, it takes several EOS to create an EOS account, which is also very expensive.
choose your own direction
the cost of developing an interface is not so high. Except for EOS, there is not much data to be chained, which is basically completed locally.
Take a blockchain API tool that I am currently using as an example
previously, I occasionally found bctools , which can quickly and conveniently test and verify BTC and EOS blockchain API. At the same time, these API interface test network and main network can be verified on bctools ; If you are interested, you can go http://bctools.io Use it
at present, Apis on bctools seem to have the following types:
3 am. College