DApp Project Creation

Prerequisites

• You have registered with Huawei Cloud.
• You have purchased a package.

Procedure

1. Log in to the NES console.
2. Choose Shared > DApp Project Management and click Create DApp Project.
3. Configure parameters.
   Figure 1 Creating a DApp project
   

   Table 1 DApp parameters

   Parameter	Description
   DApp Name	Enter 1 to 10 letters and digits.
   Public Blockchain	There are Ethereum, TRON, Polygon PoS, Arbitrum, and BNB Smart Chain. Ethereum: an open-source, blockchain-based computing platform featuring smart contract functionality TRON: a blockchain-based, decentralized operating system Polygon PoS: an L2 solution or a side chain, with its PoS Chains interconnected and communicating with the Ethereum mainnet Arbitrum: a layer 2 scaling solution for the Ethereum blockchain. It aims to enhance scalability and reduce network congestion and transaction fees while maintaining the compatibility and security of the Ethereum Virtual Machine (EVM). BNB Smart Chain: an EVM-compatible blockchain. It contains consensus layers and hubs to multiple blockchains. As a leading blockchain, BNB Smart Chain serves as an essential infrastructure, offers low-cost transactions and fast processing, and prioritizes privacy.
   Mainnet & Testnet	For Ethereum, there are Mainnet and Sepolia. Mainnet: a PoS mainnet for real transactions Sepolia: a PoS testnet with a small amount of data and fast node startup speed For TRON, there are Mainnet and Nile. Mainnet: a DPoS mainnet for real transactions Nile: a DPoS testnet with a small amount of data and fast node startup speed For Polygon PoS, there are Mainnet and Mumbai. Mainnet: The PoS mechanism and compatibility with EVMs make mainnet the preferred choice for fast transactions and low costs. Mumbai: a replica of mainnet. Mumbai allows you to develop, test, and deploy your DApps. For Arbitrum, there are One and Goerli. One: an optimistic rollup chain that supports EVMs and lets you efficiently perform transactions at low costs Goerli: a replica of mainnet. Goerli allows you to develop, test, and deploy your DApps For BNB Smart Chain, there are Mainnet and Chapel. Mainnet: an EVM-compatible, PoSA mainnet, with shorter block time and lower fees. Chapel: a replica of mainnet. Chapel allows you to develop, test, and deploy your DApps.
   Description	Describe your project in 300 characters.
   Advanced Settings	You can set whitelists to restrict access to your DApp. Click and configure whitelist information as prompted. Options of Access Control By: Blockchain Address: Your DApp can only send query requests to the whitelisted addresses. User-Agent: Your DApp can only receive requests sent by the whitelisted user-agents. IP Address: Your DApp can only receive requests sent by the whitelisted IP addresses. JSON Web Token (JWT): A JWT is an Internet standard (RFC 7519) that defines a process for secure data exchange between two parties. Your DApp can only receive requests that include the whitelisted JWTs. HTTP Origin: Your DApp can only receive requests sent by the whitelisted domain names and URLs. Content: Blockchain Address: Enter an account or contract address. For example: 0xed10421561cc4ee07e3a9b32ce6829b7ac902490 User-Agent: Enter user-agent information. For example: mobileDapp IP Address: Enter an IP address. For example: 123.123.123.123 JSON Web Token (JWT): Enter a public key. For example: -----BEGIN PUBLIC KEY----- -----END PUBLIC KEY----- HTTP Origin: Enter a URL. For example: https://www.huawei.com/en/

4. Click Create.