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SparkMinds
SparkMinds

Crypto Wallet Extension

Industry

Blockchain

Team size

3 people

Type

Web App, Browser Extension

Location

Malaysia

Timeline

12 weeks

Technologies

ReactJS, HTML, CSS, 
Typescript,

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Crypto Wallet Extension's Screens

Crypto Wallet Extension Mobile App's Screens

Project Overview

Zchains is a cryptocurrency wallet that allows users to interact with the Ethereum blockchain. It is basically a digital wallet that holds your Ethereum and EVM (Ethereum Virtual Machine) tokens.

With ZChains wallet, users are able to store and manage their Ethereum and other Ethereum-based tokens within the wallet. Moreover, they can also send, receive, and swap Ethereum and other tokens to other addresses. As a bridge between users and dApps, ZChains enables them to utilize a multitude of decentralized applications. We added secure storage mechanisms for users’ private keys, to keep their funds secure.

Key Features

  • Send and receive features by wallet address or QR code
  • Connect to Zchains Wallet Extension
  • Integrated swap functionality for trading Ethereum and other tokens directly within the wallet
  • Transaction history
  • Advanced encryption and private key protection
  • ...

Challenges

  • Making sure wallets are safely stored on devices, with access limited to their owners. It needs to combine a multitude of security technologies customized according to each platform (iOS, Android, Web) ensuring a seamless experience for the user. Further, passwords should not be stored in the devices and should be demanded to be entered each time the application is utilized.
  • Building a system to display real-time transaction history based on user activities while synchronizing data with the blockchain. This involves handling large amounts of data from multiple blockchains.
  • Enabling users to add, remove, and edit multiple wallets and networks while supporting custom tokens. This requires flexible scalability and a user-friendly interface.
  • Building a synchronized and compatible system between the web client and Chrome extension, enabling users to perform actions similar to MetaMask. This is highly complex due to the need for seamless interaction between two different platforms.

Solutions

  • Integrate blockchain APIs to fetch real-time transaction data.
  • Use local databases to temporarily store transaction history and synchronize with the blockchain when connected.
  • Optimize blockchain queries to reduce load and improve response speed.
  • Develop a modular wallet and network management system, allowing easy addition of new chains or custom tokens without major modifications.
  • Integrate EIP-155 to support multiple EVM networks and popular token standards like ERC-20 and ERC-721.
  • Provide intuitive guides and interfaces to help users manage wallets and tokens effortlessly.
  • Develop a communication bridge using WebSocket or Message Passing API to connect the web client with the Chrome extension.
  • Synchronize wallet states and transactions in real-time between both platforms.
  • Like with new modules, test the theme in a local or staging environment before deploying it to production to avoid errors.

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