thinking and modular organization of Go-ethereum
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Ethereum's goal is to build a centralized platform for running smart contracts based on blockchain technology.
# # One. Blockchain technology
Blockchain belongs to a kind of centralized digital bookkeeping technology, and blockchain data is maintained by nodes that are not trusted by each other, and each node replicates a complete record.
# Two.
First visit GitHub on the Go Language development client URL: Https://github.com/ethereum/go-ethereum
Installing Ethereum Https://github.com/ethereum/go-ethereum/wiki/Building-Ethereum
Install on Mac
Brew Tap
(1) what is Ethereum.
Ethereum is a decentralized, intelligent contract platform supported by Ether's crypto currency. (2) have heard of Ethereum, but what is geth,mist,ethminer,mix.
Geth: The go implementation of the Ethereum node is the basis for any interaction with the Ether
Preface
Since go Ethereum is the most widely used Ethereum client, subsequent source analysis is analyzed from this code on GitHub.
Build Go ethereum debugging environment
Windows 64bit
First download go install package to install, because go website is wall, so download from the address below.
https://studygolang.com/dl/golang/go1.9.1.windows-amd64.msi
After ins
Account
The account plays a central role in Ethereum. There are two types of accounts: external accounts (EOAS) and contract accounts. We'll focus on the external account here, which will be referred to as the account. Contract accounts are referred to as contracts and are discussed specifically in the contract chapters. The general concept of putting both external and contractual accounts into accounts is justified, since these entities are so-calle
Ethereum History
For recent history, please see the Taylor gerring blog post. Birth
At the same time, Vitalik began working with Dr. Gavin Wood to create Ethereum. In April 2014, Gavin published the Ethereum Yellow Book as a technical note for Ethereum virtual machines. As specified in the Yellow Book, the
This is a creation in
Article, where the information may have evolved or changed.
After learning from various sources, we decided to start building a private chain environment based on Ethereum Go-ethereum. Because my computer system for WIN8, in order to avoid the window environment too many inexplicable problems, deliberately through the VM built a ubuntu16.04 version of the virtual system. The following
In doing some testing, it may be necessary to build a private ethereum network to facilitate control and to get to the real test work faster.While the Ethereum nodes can link to each other need to meet 1) the same protocol version 2) the same networkid, so the most convenient way to build a private network is to use the--networkid option in the Geth command to set a different networkid from the main network
In Ethereum (1): In the steps to build the Ethereum private chain on CentOS 6.5 we set up the Ethereum private chain, this time we will create accounts, mining and transfer operations in this private chain environment.
First of all, to review the construction process, the more important part of our talk.
We used the last step in the build./geth--rpc--rpccorsdoma
This article is mainly a supplement to the previous article, before the operation, we need to prepare two computers with an ethereum environment. Suggest learning Ethereum or other blockchain project preferred Linux or Mac OS, personally feel that CMD is not easy to use, because I have another window system on the computer, so I was on the window to recompile the Ethere
the validation is done n/k times. )。Let's define the negligible probability Pn as the probability of obtaining a, SHA3 collision (i.e. the hash ethereu M is built upon): 1/2^128. To honor the Ethereum security requirements, we need to choose the minimum chain length N (below which we veriy every head ER) and Maximum K verification batch size such as (1/k) ^ (n/k) We define the probability that the negligible probability PN is to obtain a 256-bit SHA3
Blockchain getting startedEthereum source code analysis ethereum random number generation method 2.
Incentive
The RNG cycle is very short. For example, if there are 20 generation cycles in one hour, if the profit without a cycle is 0.001%, the profit in one month will reach 0.00001.202430 = 0.144. To achieve a profit of 14.4% per month, and RNG has n participants on average, the cost of running smart Contract C is n3500Gasprice + ccost. (ccost is the
First, first install Geth CLI environment sudo apt-get install Geth, this is very important
Second, download the source code
git clone https://github.com/ethereum/go-ethereumThirdly, environment-dependent
Note: (important) First configure the Go language development environment with this link: https://github.com/ethereum/go-ethereum/wiki/Installing-Go#ubuntu-
Citation Link: http://blog.csdn.net/wo541075754/article/details/77650693
http://blog.csdn.net/fengmm521/article/details/78446520
1): Ethereum wallet and mist download link: https://github.com/ethereum/mist/releases/
2): Extract two files to your own desired hard drive, I am the D drive
3): Locate the file directory under the Ethereum Wallet.exe, double-clic
Gethjavascript console! hints, the instructions have been started successfully
Identity name
DataDir Blockchain Address
Node Information:
Admin.nodeinfo Info First letter must be capitalized
Admin.peers Viewing Peer Nodes
To add a peer node:
Enode corresponding to admin.nodeinfo inside the Enode information, the inside of the IP to change a bit
Admin.addpeer ("enode:// 4b3aee02d139345d7651aa07c7e5d486984834000171c700b6bbe7d5c56070f069efdb103f7d9e2dd0cd4078af53c2d9a59df918366891cc142212d
# # Why are there multiple types of clients? In the early stages of the Ethereum project, several different clients have been implemented on many different operating systems, which is a huge triumph for the entire ethereum ecosystem. It allows us to verify the clarity of the agreement (as specified in the Ethereum [(https://github.com/
Blockchain QuickStart (eight)--Ethereum, Ethereum IntroductionThe initial goal of the Ethereum (Ethereum) project is to create a platform for running smart contracts (Platform for Smart contract), supporting Turing-complete applications that are automatically executed in accordance with the contract logic of the smart
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A beginner's tutorial on Ethereum smart Contract programming
Jan | 2015, Nov | 30,578 Reads
The original is the Consensys developer blog, the original author of Eva and Consensys development team. If you want to get more timely information, you can visit the Consensys home page and click Newsletter to subscribe to the email.
The original is the Consensys developer blog, the original author of Eva and Consensys development team. If you want to get more timely information, you can visit the Consensys home page and click Newsletter to subscribe to the email. The translation of this article has been authorized by Mr. Lubin, founder of Consensys.
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