Blockchain Integration Flow

System Design · flowchart diagram · unknown license

Illustrates the complete flow for a frontend application interacting with a blockchain, covering wallet connection, transaction creation, signing, network

Source: https://github.com/SanTiwari07/KrishiSetu/blob/bcd0405aa8353b20282b34f9c3478e444e7996cf/README/flowchart.md
Curated by SanTiwari07
Blockchain Web3 dApp MetaMask Smart Contract Transaction Flow Frontend

Mermaid source

graph TB
    A[Frontend Request] --> B{Wallet Connected?}
    B -->|No| C[Connect MetaMask]
    B -->|Yes| D[Create Transaction]
    C --> D
    
    D --> E[Sign Transaction]
    E --> F[Send to Network]
    F --> G[Smart Contract Execution]
    
    G --> H{Transaction Success?}
    H -->|Yes| I[Update UI]
    H -->|No| J[Show Error]
    
    I --> K[Emit Event]
    K --> L[Update State]
    
    style G fill:#e8f5e8
    style I fill:#e3f2fd
    style J fill:#ffebee

What this diagram shows

This diagram details the sequence of operations for a user to initiate and complete a blockchain transaction from a web interface. It covers checking wallet connection status, prompting connection via MetaMask, constructing and signing a transaction, broadcasting it to the network, and updating the user interface based on the smart contract's execution outcome, including success and error paths.

When to use it

Use this diagram when designing or explaining the user interaction flow for decentralized applications (dApps) that involve blockchain transactions. It's ideal for illustrating how a frontend connects to a wallet, creates, signs, and sends transactions to a smart contract, and handles the resulting outcomes.

How to adapt it for your project

Adapt by adding specific wallet providers (e.g., WalletConnect), incorporating gas estimation steps, detailing specific smart contract function calls, or integrating off-chain backend services. You can also expand error handling paths or introduce multi-signature transaction flows.

Key concepts