Tag：contract
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What are the phases of the life cycle of solidity?
id:BSN_2021 Official account: BSN Institute Solid language is a contract oriented high-level programming language, which is used to implement smart contracts on Ethereum blockchain networks. The solid language is deeply influenced by c++, Python and JavaScript, and is designed for Ethereum virtual machine (EVM). The life cycle of solidity includes four stages: editing, deployment, execution […]
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Ensure the safe operation of Oracle network
In the actual use of smart contracts, Oracle is required to verify the data. Because blockchain is also a consensus based system, the running smart contract also requires a deterministic program. The data verification step of the Oracle machine is to conform to the consensus mechanism, so that the data finally fed back to the […]
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Get started with hardhat Ethereum smart contract
0x1general When I started the development of Ethereum smart contract, I first faced a choice, hardhat vs truffle vs remix, which development tool should I choose. I searched many comparisons on Google, including “hardhat vs truffle vs Remix – which is the best for blockchain development?”This article helped me in a timely manner, and openzeppelin, […]
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Parsing the running rules of Dao
There are many exciting concepts on blockchain, and Dao is one of them. Why does Dao attract so much attention? What kind of organization is “Dao”? How does it work? To understand “Dao”, let’s take two biological characteristics as examples. Traditional organizations are like spiders. Their intelligence focuses on their heads. As long as you […]
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Subgraph ultra quick start development brief
The subgraph is actually very simple. I’ve only studied for about three hours, so I can develop it directly. Here is a brief summary of the main points. introduce The first thing to know is what it does. The subgraph is used to index data on the chain. The children who are familiar with the […]
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Source code analysis of laravel application layer loading process
Source code analysis of laravel application layer execution process Laravel is an elegant PHP web development framework. It is efficient, concise and expressive. MVC design is a full stack framework that advocates development efficiency. Is the most popular PHP framework. Therefore, I think the design idea of the laravel framework itself is worth learning by […]
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Connect smart contracts to data and systems outside the native blockchain (i.e. under the chain)
Adaoracle Oracle Oracle can connect smart contracts to data and systems outside the original blockchain (i.e. under the chain), reformat external connection points (i.e. APIs), and ensure that these two different software are compatible when exchanging data.The operation steps of adaoracle system are as follows:1. the user sends a data request to adaoracle through the […]
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How much do you know about the core architecture of the laravel framework?
Friends who have used the larave framework know that in addition to providing some basic functions (such as controller, view and model), there are also middleware, facade and contract in the larave framework. How can these things be used in the larave framework? Today I’ll talk to you in detail. First, you should understand the […]
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Key knowledge points of bsn-ddc basic network (IV) generation and management of DDC
id:BSN_2021 Official account: BSN Institute On January 25, 2022, the blockchain service network development alliance (BSN Alliance for short) launched the “bsn-ddc basic network” and entered the trial commercial stage. At the same time, the bsn-ddc official website portal (ddc.bsnbase.com) was launched for ddc/nft business parties to apply for the registration of “platform parties”. The […]
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Ensure that two different software are compatible when exchanging data
The function of the Oracle is to write external information into the blockchain to complete the data exchange between the blockchain and the real world. It allows certain smart contracts to respond to the uncertain external world. It is the only way for smart contracts to interact with external data, and it is also the […]
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Bsn-ddc basic network introduction & Q & A
id:BSN_2021Official account: BSN Institute On January 25, 2022, the blockchain service network development alliance (BSN Alliance for short) launched the “bsn-ddc basic network” and entered the trial commercial stage. At the same time, the bsn-ddc official website portal (ddc.bsnbase.com) was launched for ddc/nft business parties to apply for the registration and access of “platform parties”. […]
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[near protocol] near development demo analysis -game game near (I): smart contract
[near protocol] near development demo analysis -gamble game near Smart contract Hello everyone, near protocol is an eye-catching public chain project in recent years. Its sharding technology has also greatly improved and broken through its performance and stability. I recently learned the basic concepts related to the development of near. Based on the concept of […]