🪙 BaseTipJar

BaseTipJar is a minimalistic smart contract for receiving tips and micro-payments on the Base Mainnet.
Anyone can send ETH to the contract owner with an optional message.
The owner can later withdraw collected funds or update the payout address.

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🔗 Verified Contract

Network: Base Mainnet
Contract Address: 0x823810f48ac0de186e87bced0d849ff64a3cb62b
License: MIT
Category: DeFi

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🧩 Features

• 💸 Accepts ETH tips from anyone
• ✉️ Optional text message included with each tip
• 🔐 Owner can update the withdrawal address
• ⚙️ Optimized bytecode (200 runs, Solidity 0.8.20)

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⚙️ Deployment Details

• Compiler Version: v0.8.20+commit.a1b79de6
• Optimization: Enabled (runs = 200)
• EVM Version: Default (Prague)
• Constructor Argument: 0x0000000000000000000000000000000000000000
  → automatically assigns msg.sender as the owner

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🧠 Contract Overview (Solidity)

solidity
function tip(string calldata message_) external payable;
function withdraw() external;
function setOwner(address newOwner) external;
function owner() external view returns (address);

💬 Example Use Case

A user sends 0.01 ETH with a message:

“Thanks for the great content!”

The contract emits the event:

solidity
event Tipped(address from, uint256 amount, string message);
Later, the owner calls withdraw() to collect accumulated tips.

🧱 Repository Structure

bash
contracts/BaseTipJar.sol    # main smart contract
scripts/deploy.js           # deployment script
.env.example                # environment configuration template
package.json
README.md

⚙️ Environment Configuration

Copy .env.example → .env and fill in the following values:

bash
PRIVATE_KEY=0xYOUR_PRIVATE_KEY_HERE
BASE_RPC=https://mainnet.base.org
# Optional: predefined owner (or leave blank to use msg.sender)
#OWNER_ADDRESS=0x0000000000000000000000000000000000000000

🧾Explanation:

PRIVATE_KEY — wallet that deploys the contract BASE_RPC — Base Mainnet RPC endpoint OWNER_ADDRESS — optional, pre-defined owner

💡 How to Interact

Using Node.js (ethers.js)

js
// Send a tip
const tipJar = new ethers.Contract(
  "0x823810f48ac0de186e87bced0d849ff64a3cb62b",
  abi,
  signer
);

await tipJar.tip("Thanks for the amazing content!", {
  value: ethers.parseEther("0.01"),
});
js
// Withdraw collected tips
await tipJar.withdraw();

👤 Author

Deployed by: 0x87204f681de62581311b05ebf9fdd91c3fcd39a1

Verified on Base Mainnet — open for contributions, PRs and forks.

🧾 Notes

This project was developed as part of the Base Builders initiative and integrated into Talent Protocol as a verified on-chain builder contribution.