EOS mining course
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 tutorialin fact, many currencies do not support mining. For example, gold, OMG coins and so on.
after the birth of bitcoin, it is proposed to realize value transfer through decentralized bitcoin network. In the bitcoin system, all participants in the whole network are the supervisors of the transaction, and both parties can complete the transaction without establishing a trust relationship. Blockchain technology has changed the way people access and share information, creating a new distributed, point-to-point ecological society
at present, blockchain technology is mainly divided into three times in the market:
&&# 160; The first era is a point-to-point e-cash system represented by BTC< br />Ø&# 160; The second era is the open smart contract complete solution represented by eth< br />Ø&# 160; The third era is to solve the problem of eth performance shortage and block congestion, and strive to achieve better commercial value of public chain cluster
the global ecological cycle Foundation (hereinafter referred to as the foundation) was registered in the United States in 2020. Through the integration of ecological technology and information technology, the foundation is committed to promoting global land greening, maintaining ecological balance, and leveraging more social resources to create a sustainable green economic business model
the foundation is committed to exploring a new sustainable business model of global green economy and promoting the development of global green economy; Promote the formulation and implementation of policies and action plans of the international community in the fields of green development, ecological environment protection, desertification control and clean energy. Through the above continuous positive feedback circulation business model, the external social capital can be internalized effectively. The Foundation hopes to mobilize at least $20 billion of global funds to develop a green economy in 10 years
the project will focus on the use of innovative technologies and financial tools, including but not limited to green assets, blockchain (standard tools), professional review institutions (AUDIT), and cooperate with project stakeholders including enterprises, governments, audit firms, certification institutions, investors and so on, to jointly promote the development of landing projects< br /> Basic Proct Chain (BPC) endows the green instry with the concept of "consumers are shareholders", so that more users can get green rewards by using green ecological procts. It can be predicted that after the crazy speculation in the first decade of blockchain, the next decade will lead to a golden period of value investment. Under the POC consensus mechanism, relying on capacity proof (hard disk) and digital assets as the means of circulation, it will eventually return to the real world and promote the development of the real economy through scenario application, It will play an important role. In short, as long as we prove the relevance of all the related rewards generated by the network through the capacity, the data will be linked, real, open, transparent and searchable; The idea of everyone mining and one person, one vote will appear in a more green, low-cost and complete form
I hope it will help you
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