EOS mining
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 tutorialas for reliable and unreliable, it's totally self-conscious. Equivalent to investment, you can bear the risk.
EOS is owned by an organization called block.one, but most people contact EOS by Daniel Larimer (BM), a software developer who has been involved in other blockchain projects, including bitshares and steemit, a distributed social network. The CEO is Brendan Blumer, a serial entrepreneur
EOS is considered as Ethereum for large enterprises
EOS public chain allows people to build decentralized applications (dapps) on it and run these applications
according to the developers, the difference between EOS and Ethereum is that EOS solves the performance shortage and availability problems encountered by developers when using Ethereum. There are other small differences that we will discuss below
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generation of EOS:
unlike bitcoin, EOS is not obtained by mining. Bitcoin's consensus protocol, known as workload proof, uses a lot of power and can only handle limited transactions
On the contrary, EOS allocated 1 billion EOS tokens in one year's ICO. After that, EOS uses a consensus protocol called certificate of entitlement (dpos) to create the blocks that make up the blockchainin this system, the community votes for the witness who is responsible for verifying the transaction. If the witness misbehaves, the community members can also vote, and others will take their place
The main features of EOS are as follows:1. EOS is a bit similar to Microsoft's windows platform. By creating a developer friendly underlying platform of blockchain, it supports multiple applications running at the same time and provides the underlying template for the development of DAPP
EOS solves the problems of delay and data throughput by means of parallel chain and dpos. EOS can process thousands of data per second, while bitcoin has about 7 transactions per second, and Ethereum has 30-40 transactions per second There is no service charge for EOS, and the general audience is more extensive. The network and computing resources needed to develop DAPP on EOS are allocated according to the proportion of EOS owned by developerswhen you have EOS, it is equivalent to having computer resources. With the development of DAPP, you can lease your EOS to others. From this point alone, EOS has a wide range of value. In short, having EOS is equivalent to having a set of rent to collect rent for others, or having a piece of land to rent for others to build a house
"Transaction is mining" is a typical platform operation mode. Users mine through transactions. Some platforms will issue their own tokens as rewards for users' trading behavior
Relevant introction:in June 2018, the cryptocurrency exchange fcoin put forward the concept of "trading is mining", and in a short period of time, the daily trading volume rose to the first in the world, triggering a war between exchanges
"transaction is mining" is actually a return mechanism of personal transaction fees based on platform currency. Strictly speaking, there were similar playing methods before the establishment of fcoin. For example, bibox had a mechanism to return a certain proportion of fee income to platform currency holders
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fcoin's "transaction is mining" is repackaged. Following the allocation rules of bitcoin mining, 51% of platform currency ft is taken as the mining reward pool. Through "mining (trading on fcoin)", FT is graally unlocked. Once 51% of FT is fully fed back, "mining" is automatically terminated
in terms of specific implementation, fcoin trading means mining starts at 0 o'clock every day (GMT + 8), and the transaction fees generated by users will be converted into ft for accumulation every hour. The conversion price is calculated according to the average price of FT in that hour (the average price is calculated as total transaction amount / total trading volume)
in fact, many currencies do not support mining. For example, gold, OMG coins and so on.
on December 17, 2017, bitcoin reached an all-time high of $19850, which led people to invest in bitcoin on the evening of January 22, 2017, fire coin, bitcoin China and okcoin announced on their official websites that in order to further curb speculation and prevent drastic price fluctuations, each platform will start to collect transaction service fees from 12:00 noon on January 24, 2017, and the service fee will be charged at a fixed rate of 0.2% of the transaction amount, And the active transaction rate is consistent with the passive transaction rate on May 5, the latest data from okcoin showed that the price of bitcoin had just set a new record, reaching a high of 9222 yuan before the press. From 12:00 noon on January 24, China's three major bitcoin platforms officially began to collect transaction fees. On September 4, the central bank and other seven ministries and commissions announced that China banned virtual currency trading on December 17, 2017, bitcoin reached an all-time high of $19850 business is also extended on this network. Computers running this software are competing to solve the problem of irreversible code, which includes several business data. The first miner to deal with the problem will get a 50 bitcoin reward, and the relevant trading area will join the chain with the increase of the number of "miners", the difficulty of each puzzle is also improved, which makes the proctivity of bitcoin in each trading area maintain at about 10 minutes