SimpleChat — On-Chain Messaging dApp

Contract Address

0xFAc05469491F5e529AC44166fA6DA4ab3f42e0F3
Explorer: https://coston2-explorer.flare.network/address/0xFAc05469491F5e529AC44166fA6DA4ab3f42e0F3

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Project Description

SimpleChat is a fully on-chain messaging application built on the Flare Coston2 network.
It allows users to send plain-text messages directly to a deployed smart contract, where they are stored permanently on the blockchain. Anyone connected with a wallet can view and post messages, demonstrating decentralized data storage and smart-contract interaction with a clean frontend.

This project serves as a beginner-friendly decentralized application (dApp) template, showcasing:

• Smart contract interaction using Wagmi + Viem
• Reading on-chain data (messages, count)
• Writing transactions (sending messages)
• Wallet gating
• Realtime UI updates upon transaction confirmation

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Features

✅ On-Chain Storage

All messages are stored directly inside the smart contract.

✅ Send Messages

Users can submit any string message, which is broadcast to the blockchain.

✅ View All Messages

Anyone can instantly fetch and view all messages stored on-chain.

✅ Message Count

The UI displays the total number of messages stored.

✅ Transaction Feedback

Includes full transaction lifecycle handling:

• pending
• confirming
• confirmed
• error handling

✅ Wallet Gating

The interface automatically detects wallet connection status and restricts access accordingly.

✅ Clean UI + React Hooks

Built using:

• React
• TailwindCSS
• Wagmi
• Viem

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How It Solves the Problem

Traditional chat applications store messages on centralized servers, making them vulnerable to:

• Data loss
• Single-point failures
• Censorship
• Unauthorized tampering

SimpleChat solves this by decentralizing message storage onto the blockchain, ensuring:

• Messages cannot be altered or deleted
• Data is globally accessible
• No central authority controls the system
• Full transparency and immutability

Use Cases

• Demonstrating how dApps interact with smart contracts
• Teaching blockchain fundamentals to beginners
• A template for building more complex social dApps
• Proof-of-concept for immutable data storage

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SimpleChat is a minimal but powerful foundation for learning Web3 development using real smart contract integration, UI/UX handling, and blockchain interaction.