Tag：contract
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Time：2020-11-27
Yesterday, the elder sister carried out the first live coding for three hours in the nervos live studio. During the live broadcast, she realized the open transaction live, and responded to everyone’s request, and the women’s clothing appeared on the screen. 👇👇👇 If the response is good, we will continue to make a series of […]
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Time：2020-11-20
Start with bitcoin A story tells you how bitcoin works The positioning of this article will be more popular, and try to explain the basic principles of bitcoin by analogy. This article will not touch on the details of algorithms and protocols. I intend to write another article on bitcoin principle from the perspective of […]
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Time：2020-11-15
introduction Judging from the recent BCH bifurcation process, the governance of pow type chains such as bitcoin has been completely monopolized by large-scale mine owners (ore bullies), and has become a arena for the power and profit of mining bullies, which has greatly damaged people’s belief in the decentralized transformation of blockchain. Although Ethereum has […]
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Time：2020-11-12
When writing a smart contract, I used to record the data to be queried in the contract event. Some of the event fields are input parameters of methods. Although Ethereum log data gas free is relatively small, it can be accumulated significantly. After thinking about it, I set some rules for myself The fields to […]
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Time：2020-11-10
This series is aimed at blockchain developers and CS majors with other development experience In the face of media interpretation and praise of blockchain related technologies, many people are at a loss. Driven by fomo (fear of missing out), investors and large companies are scrambling to announce all in blockchain. Big names from all walks […]
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Time：2020-11-8
4.1 installation chain code The fabric sample project comes with many sample chain codes, which are located in the fabric samples / chaincode directory. This paper tests and installs the go version of the absore project to org1.peer0 and org2.peer0 nodes. After the chain code is installed successfully, you can call the chain code to […]
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Time：2020-11-7
For developers, the cell programming model is undoubtedly the most interesting part of nervos CKB. Here, we give a brief description of the cell model Cell is a universal version of utxo A cell is a utxo containing arbitrary data and customizable scripts When a transaction attempts to destroy or create a cell, the script […]
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Time：2020-11-2
Since the birth of the project, nervos has been adhering to its own design concept, adhering to the layered design scheme. The bottom layer solves the security and decentralization problems, and the upper level solves the problems of efficiency, expansion and multi-function. It is hoped that this way can solve the impossible triangle problem in […]
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Time：2020-10-31
Use scenarios in real life `A couple of photographers found you,Their photos are always stolen by others after they are uploaded to their blogs,The use of watermarks and other methods can not avoid such situations as intercepting parts,They need a proof that photography was first created byIt is a tool that can be uploaded by […]
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Time：2020-10-29
1. What can you gain from this course? After learning this tutorial, you will use solidity language to write some small smart contracts to achieve an entry level requirement for smart contracts. Through this tutorial, you can increase your interest in smart contract. In the future, you can go further on the road of smart […]
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Time：2020-10-27
Lesson 1 Introduction 1. What is a smart contract? Smart contract is not a common contract in reality, but a piece of program code that exists on the blockchain and can be triggered to execute. These codes implement certain predetermined rules and are “autonomous agents” existing in the execution environment of blockchain. If the smart […]
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Time：2020-10-26
1、 Introduction Guaranteed delivery is a common way to purchase brand display advertisements. The existing technical solutions are usually to abstract and model the problem in the crowd granularity. On the one hand, this modeling method ignores the differences of user behavior under the same crowd, on the other hand, it can not accurately control […]
