Tag：contract
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Time：2021-2-26
Contracts Laravel’s contract is a set of interfaces that define the core services provided by the framework, such as the user watcher contract we found in the chapter introducing user authenticationIllumninateContractsAuthGuardAnd user provider contractIlluminateContractsAuthUserProvider And the frame comes with itApp\UserThe implementation of the modelIlluminateContractsAuthAuthenticatableContract. Why use contracts From the source code files of the above […]
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Time：2021-2-17
As mentioned in the previous article, most of the alliance chain platforms, including FISCO bcos, use solidness as the development language of smart contracts, so it is necessary to be familiar with solidness. As a Turing complete programming language for blockchain platform design, solidness supports function call, modifier, overload, event, inheritance and other features, and […]
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Time：2021-2-12
preface FISCO bcos uses solidity language to develop smart contract. Solid is a Turing complete programming language for blockchain platform design. It supports function call, modifier, overload, event, inheritance, library and other high-level languages. In the first two articles of this series, we introduced the concept of smart contract and the basic features of solidness. […]
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Time：2021-2-8
The reason why blockchain application is full of criticism is the high threshold. For example, each transaction needs to consume a certain amount of gas fee. Many users with erc20 token have to save a certain amount of eth in their wallet to pay for the gas fee before using DAPP. The realization of Ethereum […]
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Time：2021-2-2
It’s easy to get a basic smart contract on Ethereum. Just Google erc20 token tutorial and you’ll find a lot of information about how to do it. Interacting with contracts programmatically is quite another matter. If you’re a python programmer, there are few tutorials. So write the Ethereum smart contract development guide in Python. According […]
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Time：2021-1-19
Author: Ke Ke (Hujiang front end development engineer)This article is an original article. You are welcome to point out some mistakes. Please indicate the source of the reprint. The emergence of a new thing must have its historical reasons. In order to write asynchronous code in a synchronous way, people have broken their heart in […]
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Time：2020-12-23
What is “on chain”? What data and logic should be “linked”? Can files be linked? Can you batch check data on the chain? What is “under the chain”? There are many problems in “on chain” and “off chain” in one article. What are “on chain” and “off chain” The chain of block “chain”, including“Data link”And“Node […]
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Time：2020-12-7
The conventional Ethereum account (EOA) has an unfortunate limitation. Each transaction from the EOA can only interact directly with a single address or contract. This often happens in DAPP interactions, such as “you must unlock x before you can get y”. Contract based accounts (contract wallets) are not subject to this restriction, and transactions can […]
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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 […]
