Developers Forum for XinFin XDC Network: Lucas Chua

Everything You Need to Know to Set Up an RPC Node Server on XDC Network.

Lucas Chua — Fri, 31 Mar 2023 08:20:45 +0000

Are you looking to set up an RPC node server on the XDC network? If so, you've come to the right place. In this step-by-step guide, we'll walk you through the process of setting up your own node server on the XDC network. As you may already know, the XDC network is a blockchain network designed for enterprise use cases. It offers high transaction throughput, low latency, and robust security features. By setting up your own node server on the XDC network, you'll be able to validate transactions, participate in governance, and earn rewards.

Before getting started with steps to setup RPC nodes, let's understand What is XDC Network? And what RPC Node Server is?, why it is so important for a blockchain network and Dapps development.

What is XDC Network?

The XinFin XDC Network is an open-source, carbon-neutral, enterprise-grade, EVM-compatible, Layer 1 blockchain that has been operationally successful since 2019. The network obtains consensus via a specially delegated proof-of-stake (XDPoS) technique that allows for 2-second transaction times, near-zero gas expenses ($0.00001), over 2000 TPS, and interoperability with ISO 20022 financial messaging standards. The XDC Network powers a wide range of novel blockchain use cases that are secure, scalable, and highly efficient.

RPC Node Server Explained in Simple Words.

A blockchain network needs RPC servers as a crucial component. Requests from users and other servers must be received, processed, and validated by them. Distributed applications (Dapps) that operate on the blockchain can be made by developers using RPC nodes, enabling users to communicate with the network in a secure and trustless way.

Developers can send transactions, perform smart contracts, and retrieve data on the blockchain using RPC nodes. Additionally, they offer a means for programmers to communicate with the underlying blockchain technology without having to create a lot of complicated code. The creation and deployment of Dapps is made simpler for coders as a result.

The blockchain's consensus algorithm is upheld by RPC servers, which are also used to verify transactions. Without them, there would be a higher risk of attack and manipulation on the blockchain network.

Advantages of Using RPC Node

Using RPC nodes to develop Dapps on XDC Network provides developers with several benefits.

RPC nodes allow developers to access the blockchain’s data without having to write complex code. This makes it easier for developers to create and deploy Dapps with minimal effort.
Using RPC nodes also ensures that the Dapps created on XDC Network are highly scalable. This is because the nodes are able to quickly process requests and validate transactions on the blockchain. This makes it easier for developers to create and deploy applications that are able to handle a large amount of traffic.
RPC (Remote Procedure Call) nodes provide a number of benefits for development and deployment, including:
Improved performance: By offloading computationally expensive tasks to remote nodes, RPC can improve the performance and responsiveness of your application.
Scalability: RPC allows you to scale your application horizontally by adding more nodes to your network as needed, which can help accommodate increased traffic and demand.
Distributed architecture: RPC enables a distributed architecture, allowing you to deploy your application across multiple nodes and locations, which can improve fault tolerance and reduce downtime.
Language-agnostic: RPC allows you to use different programming languages for different parts of your application, making it easier to leverage the strengths of each language and avoid language limitations.
Encapsulation of complexity: RPC provides an abstraction layer that encapsulates the complexity of remote communication, making it easier to build and maintain your application.
Security: RPC can help improve security by limiting access to sensitive data and resources, and by providing secure communication channels between nodes.
Interoperability: RPC allows different applications to communicate with each other regardless of the underlying technology or platform, making it easier to integrate with other systems and services.
Finally, using RPC nodes to develop Dapps on XDC Network allows developers to take advantage of the network’s low transaction fees. This makes it easier for developers to create and deploy applications that are cost-effective and efficient.

Let's get started and take the first step towards becoming a part of the XDC network!

Learn How to set up an RPC node.

Before we get started, make sure you have the following prerequisites:

A server or cloud instance with at least 16 GB of RAM and 500 GB of storage.
Ubuntu 20.04 LTS operating system.
Basic knowledge of the Linux command line.

Let’s get started with the steps to set up the RPC node.
Step1: Setting up the full node with the Bootstrap command.

sudo su -c “bash <(wget -qO- https://raw.githubusercontent.com/XinFinOrg/XinFin-Node/master/setup/bootstrap.sh)" root

For Example:-

$ sudo su -c “bash <(wget -qO- https://raw.githubusercontent.com/XinFinOrg/XinFin-Node/master/setup/bootstrap.sh)" root
[sudo] password for user: 
Please enter your XinFin Network (mainnet/testnet/devnet) :- mainnet
Your running network is mainnet
Please enter your XinFin MasterNode Name :- Demo_Server 
Your Masternode Name is Demo_Server

Step 2: Setting up the full node with docker
Clone repository

git clone https://github.com/XinFinOrg/XinFin-Node.git

Enter XinFin-Node directory

cd XinFin-Node

Install docker & docker-compose

sudo ./setup/install_docker.sh

Update the .env file with details Create a .env file by using the sample — .env.example

Enter either your company or product name in the INSTANCE_NAME field.

Enter your email address in the CONTACT_DETAILS field.

cd mainnet # testnet
cp env.example .env
nano .env

Start your Node

cd mainnet
sudo docker-compose -f docker-compose.yml up -d

To stop the node, or if you encounter, any issues use

sudo docker-compose -f docker-compose.yml down

Attach XDC Console:

cd mainnet
sudo bash xdc-attach.sh

You can check the status of your full node on the stats page at https://stats1.xinfin.network, and if you want your full node to get sync faster, you can download the latest snapshot from https://download.xinfin.network/xdcchain.tar

Follow the snapshot steps to get your full node to sync faster

sudo docker-compose -f docker-compose.yml down
wget https://download.xinfin.network/xdcchain.tar
tar -xvzf xdcchain.tar
rm -rf xdcchain/XDC
mv XDC xdcchain/XDC
sudo docker-compose -f docker-compose.yml up -d

After downloading the snapshot, monitor your node on the stats page. Once your node is fully synced, you can start using the dedicated RPC for your Dapp. Please note that the RPC port used is 8989, and for WebSocket, the port used is 8888.

To enable the 0x prefix RPC Endpoint, you can add the flag “ — enable-0x-prefix” to your “startnode.sh” script. This will allow the RPC Endpoint to recognize and process 0x-prefixed addresses.

Once the RPC node is set up and connected to the XDC Network, developers can start building their own Dapps.

Here are a few articles for your reference to get you started with Smartcontract deployment on XDC Network.

How to create and deploy a smart contract with Hardhat on XDC Network- Developers Forum for XinFin XDC Network 🌱

How to deploy smart contracts using Foundry on XDC Network ！ - Developers Forum for XinFin XDC Network 🌱

How to deploy a smart contract using Vyper on XDC Network! Developers Forum for XinFin XDC Network 🌱

How to Deploy a smart contract with XinFin Remix IDE by connecting Metamask through D'CENT Wallet Software App. - Developers Forum for XinFin XDC Network 🌱

Multiple ways to upgrade a Solidity smart contract deployed on XDC Network! Developers Forum for XinFin XDC Network 🌱

Checking XDC Network Smart Contracts for Vulnerabilities Using Mythril: A Step-by-Step Guide. - Developers Forum for XinFin XDC Network 🌱

Using RPC nodes to develop Dapps on XDC Network allows developers to take advantage of the network’s low transaction fees. This makes it easier for developers to create and deploy applications that are cost-effective and efficient.

So, if you are looking to develop powerful Dapps on XDC Network, make sure to take advantage of the power of RPC nodes. By following the steps outlined in this article, you will be able to set up an RPC node and create your own Dapp on XDC Network.

If you have any questions / queries, please post them on https://xdc.dev

5 Reasons Why Vyper Language is a Game-Changer for Smart Contract Developers.

Lucas Chua — Wed, 29 Mar 2023 13:56:42 +0000

As the world of decentralized finance continues to grow at an unprecedented rate, the development of smart contracts has become more important than ever. However, building smart contracts can be a daunting task, with developers facing numerous challenges such as security, scalability, and simplicity. That's where Vyper Language comes in. Developed by the Ethereum Foundation, Vyper Language is quickly gaining popularity among smart contract developers. In this blog post, we'll explore the top 5 reasons why Vyper Language is a game-changer for smart contract developers, and why you should consider using it for your next project. From its emphasis on simplicity to its enhanced security features, we'll take a deep dive into what makes Vyper Language stand out from the crowd.

Introduction to Vyper Language

Vyper is a cutting-edge programming language designed to create smart contracts on the Ethereum blockchain. Unlike many other programming languages, Vyper's primary focus is on security, user-friendliness, and transparency. The language ensures that smart contracts created using it are secure and trustworthy, thus minimizing vulnerabilities and risks of errors when executing these contracts. Its user-friendly interface and transparent coding structure allow developers to easily understand and modify the code. This ensures that the codes are more readable, maintainable, and less prone to critical errors. Therefore, Vyper language is an ideal tool for developers who seek to build impactful and reliable smart contracts on the Ethereum network.

Similarly, the Vyper language is also synonymous with Ethereum's virtual machine (EVM), and developers are assured that smart contracts and decentralized applications written in Vyper are guaranteed to run smoothly on the EVM. This is essential for creating trustless systems that rely on the EVM to execute their code. In conclusion, Vyper is a revolutionary programming language geared towards simplifying the development of smart contracts and decentralized applications. It is a more secure and user-friendly alternative to Solidity, and its compatibility with the EVM ensures that developers can build trustless systems that operate effectively.

The Benefits of Using Vyper Language for Smart Contract Development

The Vyper language has emerged as a highly preferred resource for developing smart contracts owing to its simplistic and intuitive syntax. The blockchain technology has witnessed a surge in popularity recently, and the Vyper language has certainly contributed to this growth. Being easy to learn and use, it is an ideal choice for novice developers who are embarking on smart contract development. Smart contracts, being self-executing programs stored on a blockchain, require a high level of accuracy and precision, and the Vyper language provides just that. Its efficient design allows developers to focus on the logic rather than the complexities of the language itself. Overall, the Vyper language has become an indispensable tool for blockchain enthusiasts, offering a user-friendly environment that fosters innovation and facilitates seamless integration with blockchain technology.

The Vyper language is a programming language that has been designed to create smartcontracts that are more secure than those written in other languages. Its enhanced security features and simple syntax make it a popular choice among developers who prioritize security and reliability. Vyper's security features include built-in checks that prevent common errors and vulnerabilities, such as integer overflow and reentrancy attacks. This ensures that smartcontracts written in Vyper are more robust and less prone to hacking. Moreover, Vyper's development team has implemented various measures to ensure the language's continual improvement in the realm of security, such as rigorous code reviews and audits. Overall, Vyper presents an excellent option for developers who want to create smartcontracts that are less susceptible to risks and offer greater protection to users.

All in all, Vyper language proves to be a very useful tool in the development of smart contracts for the Ethereum blockchain. Its simplicity ensures that developers can write secure contracts with ease and confidence. Furthermore, Vyper language integrates seamlessly with other popular Ethereum development tools like Truffle and Remix, providing developers with more options to efficiently deploy their contracts on the blockchain. With the increasing demand for blockchain technology and smart contracts, Vyper language will only continue to gain popularity as a go-to language for Ethereum development.

The Vyper language is a programming language primarily used for building smart contracts on Ethereum. As with any programming language, writing clean and organized code is essential to ensure the code is easily understandable and maintainable. Sub-headings within the Vyper language are indispensable tools that offer structure and organization to the code, making it more readable and easier to navigate. By segmenting the code into sub-sections, developers can easily identify where a particular function or variable is located, making debugging and maintenance much simpler. Furthermore, by making the code more readable, subheadings increase the chances of other developers being able to understand and potentially collaborate on the project. In short, subheadings are an essential component of writing clear, concise, and structured code in the Vyper language.

Thereafter, it is evident that Vyper's syntax for sub-headings is straightforward and user-friendly. This ensures that developers can easily create organized and easy-to-read smart contracts in the Vyper language. As smart contracts are becoming increasingly important in industries such as finance and supply chain management, it is crucial that smart contract platforms provide an intuitive and efficient coding experience. Vyper's simple sub-heading syntax serves as a testament to the language's emphasis on user accessibility and convenience. Ultimately, this feature contributes to the growth and adoption of Vyper as a go-to platform for smart contract development.

Simplified Syntax and Security Benefits

The Vyper language has emerged as a game-changer in the development of smart contracts. One of the key benefits of using Vyper is the simplified syntax of smart contracts. This simplicity makes it easier for developers to understand the code and reduces the likelihood of coding errors. With fewer errors, contracts written in Vyper are safer and more reliable. The language has been specially designed to improve the security of smart contracts and minimize the potential for vulnerabilities that could be exploited by malicious actors. As such, Vyper provides developers with a powerful tool to create trustworthy and secure smart contracts that can be deployed with greater confidence. Overall, the use of Vyper language is becoming increasingly popular in the blockchain community due to its ability to simplify and secure smart contract development.

Moreover, the Vyper language has emerged as a game-changer in the world of blockchain development. Its reliability and trustworthiness have made it an ideal choice for developers who value security above everything else. With its unique focus on security, Vyper ensures that smart contracts are secure, robust and tamper-resistant, even if a hacker were to gain access to them. This provides developers with peace of mind and confidence that their data and code are safe from malicious actors. The language has already gained significant traction within the community, and its popularity is set to grow as blockchain applications become more prevalent in our daily lives. In conclusion, the Vyper language is a highly sought-after tool that guarantees secure and reliable smart contract development, making it an excellent choice for any blockchain project.

Easier Debugging and Error Handling

Debugging and error-handling are crucial aspects of programming with the Vyper language, especially when using the Ethereum Virtual Machine (EVM) to execute smart contracts. Vyper's type-safe approach is designed to assist developers in anticipating and preventing potential errors during the development process. This feature ensures that the code is checked for errors before it is compiled, which reduces the likelihood of bugs occurring during execution. The Vyper language's type system helps to prevent common mistakes, such as arithmetic overflows or underflows, by providing developers with a more reliable way to handle errors. As a result, Vyper's type-safe approach enhances the reliability and security of smart contracts developed with the language, making it an ideal choice for developers who prioritize security and stability.

Next, it is important to mention that Vyper language is specifically designed to work seamlessly with the Ethereum Virtual Machine (EVM). This allows developers to write smart contracts and other decentralized applications with ease, while also ensuring robustness and security. Additionally, the incorporation of an advanced linter helps to identify errors and bugs in the code early on, which can save developers a significant amount of time and effort. As a result, Vyper provides a powerful and efficient platform for creating decentralized applications that are reliable and secure. In conclusion, Vyper language offers an array of features and tools that make it a preferred choice among developers looking to create decentralized applications for Ethereum or other blockchain networks.

Performance and Efficiency Enhancements

Vyper language is a simple yet efficient programming language that has gained popularity in the blockchain community as an ideal choice for building smart contracts. Its primary focus is on performance and efficiency, which makes it stand out from other more complex languages. Vyper language has a statically typed design that allows for execution times that are orders of magnitude faster than its counterparts. This is of utmost importance when it comes to smart contracts as they need to be executed quickly and efficiently to ensure their efficacy. The language is specifically designed for Ethereum, which further underlines its suitability for building smart contracts on the Ethereum blockchain. The Vyper language's focus on performance and efficiency makes it an excellent choice for developers looking to build complex smart contracts with minimal effort and time. Overall, the Vyper language is a powerful tool in the hands of developers, and its simplistic design is sure to find even more widespread use in the coming years.

Vyper, a programming language for Ethereum smart contracts, has gained recent popularity due to its unique features. One of its most notable characteristics is its compiler, which is designed to reduce gas costs while optimizing code. Gas is the fee paid to process transactions on the Ethereum network, and it becomes a crucial factor for developers to minimize these costs. Vyper's compiler achieves this by minimizing the number of computational and storage resources required to execute a smart contract. Additionally, Vyper language is designed to enable users to write code quickly and intuitively, making it accessible to both novice and experienced developers. Overall, Vyper language is an efficient tool for Ethereum developers looking to write smart contracts with minimal gas costs and optimized code.

However, despite the numerous benefits that the Vyper language offers, it still comes with some limitations. The language is relatively new, meaning that it has a smaller community compared to other languages like Solidity. Additionally, the language is not fully compatible with Ethereum, which could lead to compatibility issues in the future. Nevertheless, the Vyper language has shown its incredible potential in developing secure and efficient smart contracts. With its advanced features such as automatic memory management, support for advanced types, and libraries that enable easy sharing of code, the Vyper language presents itself as a powerful tool for developers looking to create secure and reliable smart contracts. Over time, as more developers embrace the Vyper language, we can expect to see a broader range of applications for this promising technology.

Enhanced Developer Productivity

Vyper language is a programming language that has gained a reputation for being simple to use and highly productive for developers. The language structure of Vyper is designed to make coding more intuitive, with a syntax that is easy to understand and implement. This simplicity in structure allows developers to focus on building functional programs rather than spending significant time debugging their code. Vyper language has proven to be an excellent choice for developers who are looking to save time and increase their productivity, making it a popular option for those who want to develop scalable smart contracts. Its simplicity and intuitive syntax make Vyper language an excellent choice for both novice and experienced developers looking to build reliable, efficient, and secure software systems. Overall, the enhanced productivity offered by Vyper language sets it apart from other programming languages and cements its position as a popular choice in the development community.

Vyper language is a new high-level programming language designed to create smart contracts which are secure, maintainable and easy to understand. In contrast to other languages such as Solidity, Vyper has been created with simplicity in mind. This makes it easy for developers to read, write, and understand code without the need for specialized knowledge or a steep learning curve. Vyper has a very clear syntax and enforces security by limiting functionality and eliminating features that could be exploited. This makes Vyper a great choice for developers who prioritize security and want to ensure that their smart contracts are free from potential vulnerabilities. Overall, Vyper language is an excellent option for those who want to build secure and easily understandable smart contracts.

Also, it's essential to note that Vyper language was initially designed to address the security weaknesses prevalent in Solidity, particularly in creating smart contracts for the Ethereum Virtual Machine (EVM). Unlike Solidity, Vyper language has a simpler and more intuitive syntax that eliminates the possibility of coding errors and security vulnerabilities. Therefore, developers can trust Vyper language to create secure and reliable smart contracts that comply with the high standards required in decentralized applications (dApps) running on the EVM. In conclusion, Vyper language is an innovative programming language that offers developers unrivaled productivity, efficiency, and security features, making it a game-changer in the blockchain technology landscape.

Increased Interoperability with Other Platforms

Vyper language has been specifically created to increase its interoperability with other blockchain platforms. This feature allows developers to easily integrate Vyper with Ethereum, Hyperledger, and many other blockchain environments. This interoperability feature helps to simplify the development process by allowing developers to work on their projects using the Vyper language without the need to worry about any compatibility issues when deploying their codes on other platforms. As a result, Vyper language has gained a growing popularity among blockchain developers due to its versatility, scalability, and ease of use. By leveraging the unique features of the Vyper language, developers can create secure and efficient smart contracts, which can be seamlessly integrated into various blockchain ecosystems. Overall, the Vyper language represents a significant breakthrough in the blockchain industry, making it easier for developers to build decentralized applications that can run across different blockchain platforms.

The Vyper language is an open-source programming language designed to be used on the Ethereum Virtual Machine (VM). Vyper was created to address some of the security vulnerabilities found in Solidity, the primary language used for writing smart contracts on the Ethereum blockchain. One of the advantages of Vyper is its increased interoperability. The language allows developers to more easily write code that works across multiple platforms, resulting in a more streamlined development process. This interoperability is particularly important when writing smart contracts that need to interact with other contracts or decentralized applications. Vyper's focus on security and simplicity makes it an excellent choice for developers looking to create secure smart contracts on the EVM. Overall, the addition of Vyper to the Ethereum ecosystem is a positive development that will help to ensure the continued growth and success of the blockchain.

Also, it is worth noting that Vyper language has been primarily designed for smart contract development. It offers many advantages over other languages in terms of simplicity, security, and reliability. Its syntax is easy to learn and understand, and the language itself is free from many of the vulnerabilities that can plague other programming languages. With Vyper, developers can write smart contracts that are efficient, dependable, and secure. Moreover, with the added benefit of being able to write code that can be read on both Ethereum and Hyperledger networks, developers can have even more flexibility and reach in creating blockchain applications. Vyper language is truly an innovative solution for smart contract development and the blockchain industry as a whole.

In conclusion, Vyper Language is a true game-changer for smart contract developers. Its emphasis on simplicity and security, along with its ability to address scalability concerns, provides a comprehensive solution to the challenges faced by developers in the blockchain ecosystem. With its growing popularity and support from the Ethereum Foundation, Vyper Language is poised to become an essential tool for anyone looking to develop smart contracts with ease and confidence. As the blockchain landscape continues to evolve rapidly, Vyper Language remains at the forefront, offering an unparalleled level of simplicity, security, and scalability that sets it apart from other smart contract development languages. So, if you're looking to take your smart contract development to the next level, Vyper Language is a must-have in your toolkit.

Learn How to deploy a smart contract using Vyper on XDC Network! https://www.xdc.dev/vinn_9686/how-to-deploy-an-xrc20-smart-contract-using-vyper-on-xdc-network-301m

Unlock the Power of RPC Nodes and Create Your Own Dapp on XDC Network!

Lucas Chua — Mon, 09 Jan 2023 12:43:56 +0000

Have you ever wondered how to develop decentralized applications on a blockchain network? You may have heard about RPC nodes, but do you know how to set one up and use it to create your own decentralized applications (Dapps)? This article will explain what RPC nodes are and how they can be used to create powerful Dapps on XDC Network.

Introduction to RPC Nodes

RPC nodes are essential components of a blockchain network. They are responsible for receiving, processing and validating requests from users and other nodes. By using RPC nodes, developers can create distributed applications (Dapps) that run on the blockchain, allowing users to interact with the network in a secure and trustless manner.

RPC nodes allow developers to access the blockchain’s data, send transactions, and execute smart contracts. They also provide a way for developers to interact with the underlying blockchain technology without having to write complex code. This makes it easier for developers to create and deploy Dapps with minimal effort.

RPC nodes are also used to validate transactions and maintain the blockchain’s consensus mechanism. Without them, the blockchain network would be prone to attack and manipulation.

What is XDC Network?

XDC Network is a permissionless blockchain network that provides developers with the tools they need to build and deploy decentralized applications. XDC Network is powered by the XDC Protocol, a set of rules and protocols that allow developers to create and deploy Dapps on the network.

The XDC Protocol is powered by a consensus mechanism known as Proof of Stake (PoS), which enables the network to process transactions quickly and securely. The XDC Protocol also includes features such as smart contracts, decentralized exchanges, and staking rewards.

Benefits of using RPC nodes

Using RPC nodes to develop Dapps on XDC Network provides developers with several benefits. Firstly, RPC nodes allow developers to access the blockchain’s data without having to write complex code. This makes it easier for developers to create and deploy Dapps with minimal effort.

RPC nodes also provide developers with a secure and trustless way to interact with the blockchain. This ensures that the data and transactions on the blockchain are safe from manipulation and attack.

Using RPC nodes also ensures that the Dapps created on XDC Network are highly scalable. This is because the nodes are able to quickly process requests and validate transactions on the blockchain. This makes it easier for developers to create and deploy applications that are able to handle a large amount of traffic.

Finally, using RPC nodes to develop Dapps on XDC Network allows developers to take advantage of the network’s low transaction fees. This makes it easier for developers to create and deploy applications that are cost-effective and efficient.

How to set up an RPC node

Setting up an RPC node on XDC Network is a relatively simple process.
Prerequisites
Before we get started, make sure you have the following prerequisites:

A server or cloud instance with at least 16 GB of RAM and 500 GB of storage.
Ubuntu 20.04 LTS operating system.
Basic knowledge of the Linux command line.
Step:-1 setting up the full node with the Bootstrap command

sudo su -c “bash <(wget -qO- https://raw.githubusercontent.com/XinFinOrg/XinFin-Node/master/setup/bootstrap.sh)" root

Example:-

$ sudo su -c “bash <(wget -qO- https://raw.githubusercontent.com/XinFinOrg/XinFin-Node/master/setup/bootstrap.sh)" root
[sudo] password for user: 
Please enter your XinFin Network (mainnet/testnet/devnet) :- mainnet
Your running network is mainnet
Please enter your XinFin MasterNode Name :- Demo_Server 
Your Masternode Name is Demo_Server

Step:2 Setting up the full node with docker

Clone repository

git clone https://github.com/XinFinOrg/XinFin-Node.git

Enter XinFin-Node directory

cd XinFin-Node

Install docker & docker-compose

sudo ./setup/install_docker.sh

Update the .env file with details Create a .env file by using the sample — .env.example

Enter either your company or product name in the INSTANCE_NAME field.

Enter your email address in the CONTACT_DETAILS field.

cd mainnet # testnet
cp env.example .env
nano .env

Start your Node

cd mainnet
sudo docker-compose -f docker-compose.yml up -d

To stop the node, or if you encounter, any issues use

sudo docker-compose -f docker-compose.yml down

Attach XDC Console:

cd mainnet
sudo bash xdc-attach.sh

Follow the snapshot steps to get your full node to sync faster

sudo docker-compose -f docker-compose.yml down
wget https://download.xinfin.network/xdcchain.tar
tar -xvzf xdcchain.tar
rm -rf xdcchain/XDC
mv XDC xdcchain/XDC
sudo docker-compose -f docker-compose.yml up -d

If you have any further questions, please post them on https://xdc.dev

Building a Dapp on XDC Network using RPC nodes

Once the RPC node is set up and connected to the XDC Network, developers can start building their own Dapps. The first step is to create a smart contract. This is done by writing code in a language such as Solidity. The smart contract code can then be compiled and deployed to the XDC Network using the XDC CLI.
Once the smart contract is deployed, the next step is to create the frontend of the Dapp. This is done by writing code in a language such as HTML, CSS, and JavaScript. The code can then be compiled and deployed to the XDC Network using the XDC CLI.

Once the frontend is deployed, the Dapp is ready to be used. Developers can then start interacting with the Dapp using the RPC node. This allows them to send transactions to the Dapp, query the blockchain’s data, and execute smart contracts.

Advantages of using XDC Network

Using XDC Network to develop Dapps has several advantages. Firstly, the XDC Protocol is powered by a consensus mechanism known as Proof of Stake (PoS). This ensures that the network is secure and resistant to attacks and manipulation.

The XDC Protocol also includes features such as smart contracts, decentralized exchanges, and staking rewards. This makes it easier for developers to create and deploy applications that are secure, trustless, and cost-effective.
Finally, the XDC Protocol is highly scalable. This makes it easier for developers to create and deploy applications that can handle a large amount of traffic.

What are the requirements for deploying a Dapp?

To deploy a Dapp on XDC Network, developers need to have the following:
• A computer with an internet connection
• The XDC Network software
• The XDC Protocol
• The XDC Network node software
• The XDC CLI
• A configuration file
Once the requirements are met, developers can start building and deploying their Dapps on XDC Network.

Types of Dapps that can be built on XDC Network

Developers can use XDC Network to build a variety of different types of Dapps. These include games, digital wallets, exchanges, and other financial services. Developers can also use XDC Network to build applications that utilize smart contracts, such as decentralized autonomous organizations (DAOs) and supply chain management systems.

Troubleshooting tips for setting up an RPC node

If you are having trouble setting up an RPC node on XDC Network, here are some troubleshooting tips:
• Make sure that your computer is connected to the internet. • Make sure that you have the correct version of the XDC Network software.
• Make sure that you have installed the necessary dependencies.
• Make sure that you have configured the RPC node correctly.
• Make sure that your configuration file is valid.
• Make sure that your RPC node is connected to the XDC Network.

Conclusion

RPC nodes are essential components of a blockchain network. They are responsible for receiving, processing, and validating requests from users and other nodes. By using RPC nodes, developers can create distributed applications (Dapps) that run on the blockchain, allowing users to interact with the network in a secure and trustless manner.

Online DeFi Hackathon Starting October 11 with Prize Pool of $51000

Lucas Chua — Tue, 11 Oct 2022 05:35:53 +0000

The XDC Network, which combines the power of public and private blockchains with interoperable smart contracts, has announced it is offering an online global DeFi hackathon in cooperation with Devpost and Inac Consulting starting October 11 at 10:00 a.m. ET on Devpost, which powers most of the world's software competitions on its platform. Register now at xdc.devpost.com

The purpose of the hackathon, which continues until December 19 at 5:00 p.m. ET, is to build your dream DeFi project on XDC Network.

The XDC Network is a Layer 1 EVM (Ethereum Virtual machine) compatible network, which means what runs on Ethereum will run on XDC Network. The enterprise-grade XDC Network is compatible with ISO 20022 financial messaging standards and can power a wide range of novel blockchain use cases. Equipped with both public and private states, the XDC Network was designed to meet the needs of enterprises with concerns about information transparency and data privacy. The delegated proof-of-stake mechanism (XDPoS) by which the network reaches consensus allows for two-second transaction time, near zero gas fees. Military-grade security through 2/3 node validation. User-friendly, customizable block explorer and network statistics pages offer unprecedented transparency where required.

In this hackathon, you’ll learn the capabilities of XDC and build your dream Dex or DeFi project on the XDC Network. Expand your knowledge of blockchain, get a shot at some great prizes and grow your Project with the XDC Community. The XDC community would love to try out your project so share it on Twitter with #BuilditOnXDC, #XDC, and #WeAreXDC.

$50,750 in XDC PRIZES

$20,000 in the Dex Track
$14,000 in the DeFi (Stablecoin backed by XDC) Track
$10,000 in the Ported dApp Track
$1,000 to 5 Honorable Mentions
$1,750 across Developer Forum MVPs
Details on prizes below

REQUIREMENTS

WHAT TO BUILD

Build a working dApp on the XDC Network within one of the categories listed:

Dex(Decentralized Exchange): Build your dream Dex with great UI and safety. Add staking/farming options. Optionally check and use https://defiforxdc.vercel.app as DeFi base and add your code to the contracts. Bonus points for Stablecoin integration or using new created stablecoin (DAI type).
DeFi - Stablecoin backed by XDC: Build a Stablecoin backed by XDC(DAI type stablecoin) and utilize the potential of the XDC Network.
Ported dApps: dApps that are ported for any of the above categories or disruptive, new dApps ported from other chains benefitting XDC network utility.
Note: All dApps must be deployed on the XDC Network Mainnet.

Please first deploy on XDC Testnet (Apothem Network). Once you're satisfied and ready to deploy on mainnet (XDC Network), request XDC for deployment by filling this form https://forms.gle/6nbRCS95w4K6hEcPA. If approved, XDC will be sent to you within 1 - 3 business days.

WHAT TO SUBMIT

Code. Submit your project code as a pull request to the XDC Hackathon repository here. You will also need to provide a URL to your open-source GitHub repository for judging and testing. Your code repository must be public and include an open-source license.
Video. Include a video (about 3 minutes) that demonstrates your project submission. Videos must be uploaded to YouTube, Vimeo, or Facebook Video and made public.
Write Up. Briefly describe the project's workflow, limitations, tech stack and identify which category you are submitting into.

DEVELOPER PORTAL MVP BONUS PRIZE

If you have a technical question, tips or tricks, or any other technical guidance - it might help your fellow developer. Share it on the XDC Developer Forum to help out and get a shot at the Developer Forum MVP prizes

PRIZES

$50,750 in prizes
Cryptocurrency logo Prizes paid in cryptocurrency

Dex (Decentralized Exchange) - First Place
✨ $13,000 in XDC ✨

Promotion on XDC social media handles
Featured in XDC blog

_ Dex (Decentralized Exchange) - Second Place_
✨$7,000 in XDC ✨

Promotion on XDC social media handles
Featured in XDC blog

_ DeFi - Stablecoin backed by XDC - First Place_
✨$10,000 in XDC ✨

Promotion on XDC social media handles
Featured in XDC blog

_ DeFi - Stablecoin backed by XDC - Second Place_
✨ $4,000 in XDC ✨

Promotion on XDC social media handles
Featured in XDC blog

_ Ported dApp - First Place_
✨ $7,000 in XDC ✨

Promotion on XDC social media handles
Featured in XDC blog

_ Ported dApp - Second Place_
✨ $3,000 in XDC ✨

Promotion on XDC social media handles
Featured in XDC blog

_ Honorable Mention (5)_
✨$1,000 in XDC✨

_ First Place | Developer Forum MVP_
✨ $1,000 in XDC✨

_ Second Place | Developer Forum MVP_
✨ $500 in XDC ✨

_ Third Place | Developer Forum MVP_
✨ $250 in XDC ✨

JUDGES

A qualified panel of judges

JUDGING CRITERIA

Implementation
How well was the idea executed? Does the interaction with the XDC network demonstrate quality software development?
Potential Impact
How big of an impact could the project have on the XDC Network. Does it add some kind of utility for XDC?
Quality of dApp
How creative and unique is the project? Is the project a high quality DeFi application?

For more details and Join Hackathon at https://xdc.devpost.com/

How to Build a dApp on XDC Blockchain?

Lucas Chua — Mon, 13 Jun 2022 06:10:51 +0000

The XDC Network is a hybrid blockchain platform that has been designed to support global finance and trade. It’s highly interoperable and harnesses the power of cryptographic tokens to facilitate quick settlement of trade transactions, reducing dependence on complicated foreign exchange infrastructures. The XDC Network offers several key benefits to its users, including lower transaction fees, minimal energy consumption, faster confirmation time, double validation, and randomization for security guarantees.

XDC can help lay the foundation for a revolutionized digital economy and develop tokenized trade financing distribution standards. This, in turn, can offer organizations greater exposure to emerging markets.

What is a dApp?

Decentralized apps (dApps) are digital programs or applications that are built and run on a peer-to-peer network of computers. They are essentially a combination of a frontend user interface and a smart contract. DApps are not under the control or purview of any single authority and has a multitude of use cases in various industries including finance, gaming, and social media.

How to develop a dApp on the XDC network?

Deciding on the architecture of your dApp is the first step in dApp development. Depending on its intended architecture, you can choose a blockchain protocol for your dApp’s development.

Let’s now discuss the next steps you should take after you have completed the dApp architecture-

Protocol selection

To build a dApp, it’s important first to choose a blockchain protocol. You have the option to choose a private network, public network or hybrid ecosystem such as the XDC Network based on your needs.

Collecting data

Depending on which microservices the dApp intends to provide, both on-chain or off-chain data, from multiple sources including external sources, must be gathered onto the blockchain.

Data processing

Once the data has been gathered on the blockchain, it is time to process it and create an interface design that allows users to interact with the dApp and trust the data. After this, the structure of the dApp is focused on. A dApp’s architecture design involves two aspects-

Front-end Development

The front-end development of a decentralized application is focused on building an easily navigable interface for users. This includes optimizing web pages and visual aspects of the app, fixing bugs, and improving the overall user experience. Note that the front end allows users to interact with the dApp. Here is the technology stack you will need to develop a dApp on the XDC ecosystem.

AngularJS
BootStrap
jQuery
React
Backend development

Any dApp’s backend focuses primarily on smart contract development in addition to the following components-

User identity

User identity entails a set of basic decisions, such as whether the identity should be centralized or decentralized. This is an important factor that determines the success of the user interface.

Authorization and Roles

Authorization and roles must be considered to regulate user movements, determine where authorization can be saved, and ensure that roles are properly managed.

Notifications

Notifications send out alerts about actions occurring on and off the chain. They are off-chain in nature.

Business Logic

Business logic determines how to present business logic data to the public. This involves determining whether the data will be available off-chain or on-chain.

Storage

You have two choices for storage: either save your data to the cloud or allow the blockchain to save it. You can choose which storage option you want, depending on the needs of the dApp.

Smart contracts

Smart contracts control the entire blockchain and define its functionality. They also determine how external data sources and APIs interact with on-chain data via Oracles. It’s important to note here that-

Third-party integration and APIs are also required for dApp development. These help front-end programs communicate with smart contracts or the backend.

Connect the dApp with the wallet, smart contract, and XDC ecosystem for its decentralization.

How to create a smart contract for dApp development?

We now have a better understanding of the architecture of dApps, and how they are built. Let’s now discuss the technicalities of creating the smart contracts that regulate dApps.

1.Set up the dApp Environment

For facilitating dApp development on the XDC Network, it’s first important to create a dApp environment for both the front-end and backend of the app. The following are the requirements for creating a dApp environment-

A test network for testing the smart contract:

Smart contract deployment on the mainnet is a highly resource-intensive process. That is why developers should test their smart contracts on test networks to tune them and verify that they are ready to be deployed on the mainnet.

Wallet client:

Wallet-CLI, the command-line wallet of the XDC Network, is used by developers to post and deploy smart contracts and perform other operations on the network.

Developing the smart contract
Once you have set up your dApp environment, it is time for smart contract development. The smart contract will regulate the functions and operations of the dApp. Let’s talk about the process of compiling and debugging the contract and how to deploy it.

Initiating the private chain:

For determining if a log message stating “produce block successfully” appears, the private chain must be deployed successfully.

Develop the smart contract:

Pragma solidity ^0.4.0;

Contract DataStore {

mapping(uint256+>uint256) data;

function set(uint256 key,uint256 value) public {
}

function get(uint256 key) view public returns (uint256 value) {

value=data[key];
}

}

Use SimpleWebCompiler to compile:

The XDC Compiler integrates with Remix. You should consider temporary methods of acquiring ABI or ByteCode, rather than getting them directly from Remix. To do this, copy the smart contract code and paste it into SimpleWebCompiler. Finally, click the compile button.

Deploy with Wallet-Cli:

To compile on Wallet-Cli, first, download it. Use the given code:

#Download source code

git clone

cd wallet-cli

#Compile

./gradlew build

cd buil/libs

Then initiate Wallet — Cli with this code:

java-jar wallet-cli.jar

After initiation, enter the given command into the portal. Import your private key and inquire about the balance

importwallet

<Enter your custom wallet password twice>

<Enter private key: da146374a75310b9666e834ee4ad0866d6f4035967bfc76217c5a495fff9f0d0>

login

<Enter your custom wallet password>

getbalance

Contract deployment

Upon successful deployment of a smart contract, a message with the following text will be displayed: “Deploy the contract successfully.”

Access the dApp through XDCPay

Your dApp is now ready for end-users. Users must connect to an XDC dApp with a wallet in order to access it.

Once connected, users have access to the dApp and can navigate its features, perform transactions, and enjoy many other benefits.

As decentralized technology becomes more widely recognized for its potential for driving business growth, the number of dApps or decentralized applications built across industries continues to rise. The XDC network facilitates dApp development in its ecosystem by offering different SDKs as well as ecosystem tools such as XDCPay, XDC Origin, Network Stats, and XDC Explorer to developers. Besides, this hybrid EVM-compatible network maintains its momentum through timely feature launches and frequent updates of such features. So, XDC is undoubtedly an ideal platform for scalable dApp development you can bank upon.

What is Web 3.0 ? | Features of Web 3.0

Lucas Chua — Fri, 10 Jun 2022 07:58:21 +0000

Web 3.0 represents the next iteration or phase of the evolution of the web/internet and potentially could be as disruptive and represent as big a paradigm shift as Web 2.0 did. Web 3.0 is built upon the core concepts of decentralization, openness, and greater user utility.

Berners-Lee had expounded upon some of these key concepts back in the 1990s, as outlined below:

Decentralization: “No permission is needed from a central authority to post anything on the web, there is no central controlling node, and so no single point of failure...and no ‘kill switch’! This also implies freedom from indiscriminate censorship and surveillance.”
Bottom-up design: “Instead of code being written and controlled by a small group of experts, it was developed in full view of everyone, encouraging maximum participation and experimentation.”

Web 3.0 has moved well beyond the original concept of the Semantic Web as conceptualized by Berners-Lee in 2001. This is partly because it is very expensive and monumentally difficult to convert human language—with all its subtle nuances and variations—into a format that can be readily understood by computers, and because Web 2.0 has already evolved substantially over the past two decades.

Defining Features of Web 3.0
Though there is as yet no standardized definition of Web 3.0, it does have a few defining features:

Decentralization: This is a core tenet of Web 3.0. In Web 2.0, computers use HTTP in the form of unique web addresses to find information, which is stored at a fixed location, generally on a single server. With Web 3.0, because information would be found based on its content, it could be stored in multiple locations simultaneously and hence be decentralized. This would break down the massive databases currently held by internet giants like Meta and Google and would hand greater control to users.

With Web 3.0, the data generated by disparate and increasingly powerful computing resources, including mobile phones, desktops, appliances, vehicles, and sensors, will be sold by users through decentralized data networks, ensuring that users retain ownership control.

Trustless and permissionless: In addition to decentralization and being based upon open source software, Web 3.0 will also be trustless (i.e., the network will allow participants to interact directly without going through a trusted intermediary) and permissionless (meaning that anyone can participate without authorization from a governing body). As a result, Web 3.0 applications will run on blockchains or decentralized peer-to-peer networks, or a combination thereof—such decentralized apps are referred to as dApps.

Artificial intelligence (AI) and machine learning: In Web 3.0, computers will be able to understand information similarly to humans, through technologies based upon Semantic Web concepts and natural language processing. Web 3.0 will also use machine learning, which is a branch of artificial intelligence (AI) that uses data and algorithms to imitate how humans learn, gradually improving its accuracy. These capabilities will enable computers to produce faster and more relevant results in a host of areas like drug development and new materials, as opposed to merely targeted advertising that forms the bulk of current efforts.

Connectivity and ubiquity: With Web 3.0, information and content are more connected and ubiquitous, accessed by multiple applications and with an increasing number of everyday devices connected to the web—one example of which is the Internet of Things.

Potential and Pitfalls of Web 3.0
Web 3.0 has the potential to provide users with far greater utility, going well beyond the social media, streaming, and online shopping that comprise the majority of Web 2.0 applications consumers use. Capabilities like Semantic Web, AI, and machine learning, which are at the core of Web 3.0, have the potential to greatly increase application in new areas and vastly improve user interaction.

Core features of Web 3.0, such as decentralization and permissionless systems, will also give users much greater control over their personal data. This may help limit the practice of data extraction—which refers to information collected from web users without their consent or compensation—and curb the network effects that have enabled the technology giants to become near-monopolies through exploitative advertising and marketing practices.

However, decentralization also brings with it significant legal and regulatory risks. Cybercrime, hate speech, and misinformation are already difficult to police and will become even more so in a decentralized structure because of the lack of central control. A decentralized web would also make regulation and enforcement very difficult; for example, which country’s laws would apply to a specific website whose content is hosted in numerous nations globally?

What’s a Real-World Example of How Web 3.0 Will Be Able to Provide Greater User Utility?
For example, if you are making plans for a vacation and are on a budget, you currently would have to spend hours looking for flights, accommodation, and car rentals, trawling through numerous websites and comparing prices. With Web 3.0, intelligent search engines or bots will be able to collate all this information and generate tailored recommendations based on your profile and preferences, saving you hours of work.

Is Web 3.0 the Same as the Semantic Web?
Web 3.0 goes well beyond the Semantic Web envisioned by web pioneer Tim Berners-Lee in 2001. Though Web 3.0 uses technologies based on Semantic Web concepts and natural language processing to make user interaction more intuitive, it also has other features, such as widespread use of artificial intelligence (AI) and machine learning, and trustless/permissionless systems, such as blockchain and peer-to-peer networks.

Which Newer Technologies in Finance Will Be Facilitated by Web 3.0?
Because of its key decentralization feature, Web 3.0 lends itself to technologies such as blockchain, distributed ledger, and decentralized finance (DeFi).