Guestbook Smart Contract

A simple guestbook smart contract that allows users to post messages on-chain.

Features

• Post messages to the guestbook
• Retrieve paginated messages
• View total message count
• All messages are stored on-chain with sender address and timestamp

Deployments

Sepolia Testnet

• Contract Address: 0xb8Ee3634253dF7BCb4ed7CD656C728327499480a
• Explorer: View on Etherscan

Foundry

Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.

Foundry consists of:

• Forge: Ethereum testing framework (like Truffle, Hardhat and DappTools).
• Cast: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
• Anvil: Local Ethereum node, akin to Ganache, Hardhat Network.
• Chisel: Fast, utilitarian, and verbose solidity REPL.

Documentation

https://book.getfoundry.sh/

Usage

Build

$ forge build

Test

$ forge test

Format

$ forge fmt

Gas Snapshots

$ forge snapshot

Anvil

$ anvil

Deploy

$ forge script script/DeployGuestbook.s.sol:DeployGuestbook --rpc-url <your_rpc_url> --broadcast --verify

Note: Make sure to set your PRIVATE_KEY environment variable before deploying.

Cast

$ cast <subcommand>

Help

$ forge --help
$ anvil --help
$ cast --help