IntroductionIn the previous article, we implemented the blockchain workload proof mechanism (POW), as much as possible to achieve the mining. But there are many important features that are not implemented from real blockchain applications. Today we will implement the storage mechanism of blockchain data and save the blockchai
Blockchain (blockchain) is a big hit right now, with news media reporting that it will create the future.
However, there are few easy-to-understand introductory articles. What the blockchain is, what is special and seldom explained.
Below, I'll try to write a best-understood blockchain tutorial. After all, it is not a
go+ Blockchain Course Outline Blockchainsyllabus course Competitive Advantage Tsinghua University, Microsoft teacher carefully build courses, lasted half a year to develop a unique system of courses, the first to introduce the Go language distributed cluster development. First to create blockchain front-end + back-end one-stop development. The first to introduce the cottage Bitcoin, fork ethereum, in-de
first section OverviewFor beginners, the content covers the basic concepts related to ethereum development and will teach you how to build a complete de-centralized application based on Ethereum-blockchain voting system.By learning, you will master:
Basic knowledge of Ethereum blockchain
Software environment required to develop and deploy ethereum contracts
Authoring Ethereum contracts usin
, specify the Chaincode to be called by Chaincodeid, as shown above, Chaincode is Fabcar.
So what does this chaincode, named Fabcar, look like? Take a look at the code. First of all, this chaincode is placed under this directory:
Open this chaincode source file, is written in the go language, the top defines the smartcontract and car two classes, wherein car is the main model object, there are several properties Make,model.
The following two methods are related to the fabric network, mainly t
This is a creation in
Article, where the information may have evolved or changed.
The series of articles I have put on GitHub: blockchain-tutorial, Updates will be on GitHub, and may not be synced here. If you want to run the code directly, you can clone the tutorial repository on GitHub and go to the SRC directory to execute make .
Introduction
Blockchain is one of the most revolutionary technologies o
This article began to enter the "Go to build Blockchain" series, mainly for the original translation. This article corresponds to the following text:
Building Blockchain in Go. Part 1:basic Prototype
Words do not say much, began to enter the text.
1. Introduction
Blockchain is one of the most revolutionary technologies of the 21st century, it is still evolving, a
Recently, the food anti-counterfeiting traceability system formally commercial, Carrefour signed its traceability system for large-scale project construction, mainly to improve food transparency, Carrefour use blockchain technology to build a traceability system, docking the entire production process, to achieve open and transparent supervision.Blockchain technology will change the financial system for the next 20 years and 30. At the same time,
The smallest blockchain is built from Python code with less than 50 lines (original: Let's build the tiniest Blockchain), but the code in the text is based on Python2, and the PYTHON3 environment needs to be modified slightly as follows: (built The first contact with the blockchain students, first read the last reference article of this article)Import Hashlib as
This is a creation in
Article, where the information may have evolved or changed.
Blockchain is currently the hottest topic, the vast number of readers have heard of bitcoin, and perhaps a smart contract, I believe we all want to know how this all work. This article is to help you use the Go language to implement a simple blockchain, with less than 200 lines of code to reveal the principle of the
This is a creation in
Article, where the information may have evolved or changed.
Blockchain is currently the hottest topic, the vast number of readers have heard of bitcoin, and perhaps a smart contract, I believe we all want to know how this all work. This article is to help you use the Go language to implement a simple blockchain, with less than 200 lines of code to reveal the principle of the
introductory Blockchain must-read
what the blockchain is.
"Blockchain" technology was originally designed by an alias Satoshi for Bitcoin (a digital currency) and a special database technology, it is based on the cryptographic Elliptic Curve Digital Signature Algorithm (ECDSA) to achieve the central to the design of the peer system. But the role of the
This is a creation in
Article, where the information may have evolved or changed.
The series of articles I have put on GitHub: blockchain-tutorial, Updates will be on GitHub, and may not be synced here. If you want to run the code directly, you can clone the tutorial repository on GitHub and go to the SRC directory to execute make .
Introduction
At the beginning of this series of articles, we mentioned that bl
verification speed of the blockchain. No need to worry about transactional issues, just care about the output script. Utxo cannot be split, each transaction requires multiple outputs, respectively, for expenses and change. The advantage of the account model is the ability to quickly get the balance of an account, and Bitcoin needs to integrate the total amount of unused transactions in all Utxo owned by the specified address. Save space because there
Blockchain Enthusiast (qq:53016353)
In fact, small series A bit hesitant to write this tutorial, in fact, the digital money mining method and LTC almost the same, only need to change the mining port to 8336 can be, but considering that there are still a lot of novices, and ultimately can't help writing, if you have mastered the LTC mining, then you can not read this tutorial, Change the mining port directly to 8336 and then dig it like LTC. If you are
Tags: platform It's content color organization operation domestic form IMABlockchain Technology and database technologyIBM was one of the first international companies involved in blockchain development, such as the IBM and Samsung blockchain projects and LINUX/IBM joint projects that were well known last year. As the head of the IBM Blockchain technology China a
March 10, there are netizens in the group to share the suspected Xiaomi blockchain products "encrypted rabbit" link, Xiaomi or will launch their own blockchain game project.First, about the millet blockchain pet "Crypto Rabbit"From the exposure of the 2 group chat, Xiaomi should formally enter the Blockchain game field
Now we have read the technical logic of many overseas blockchain projects. In fact, there are also a lot of domestic high-quality blockchain projects, and the momentum is very strong, so it cannot be underestimated.
I introduced several domestic blockchain projects in the previous article, but I gave a brief overview from the perspective of development and did no
Most people do not need to re-create a set of blockchain, but based on the existing blockchain underlying platform to develop their own applications, for similar encryption algorithms, peer-to technology, consensus algorithm and so on only need to have a basic understanding can be, temporarily do not need in-depth research. In the text, there are three main blockchain
Tags: blockchain vs Traditional DatabaseThe concept of blockchain (blockchain) is becoming more and more hot because of the flourishing of virtual currencies such as Bitcoin, which in fact can be used in many other fields because of the special design ideas. As a distributed data storage model with high fault tolerance, what are the differences between
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