DropERC20 Contract
This contract enables airdropping ERC20 tokens to a predetermined list of addresses. It allows the contract owner to set the token to be airdropped and the amount to be distributed to each recipient.
Features
- Airdropping ERC20 tokens to multiple addresses at once
- Setting the token to be airdropped and the amount per recipient
- Admin-controlled operations for initiating and managing the airdrop
Usage
1. Deploy the DropERC20 contract.
2. Call the `setDropToken` function to set the token to be airdropped and its decimals.
3. Call the `setRecipients` function to provide a list of recipient addresses and the amount to be airdropped to each address.
4. Call the `startDrop` function to initiate the airdrop process. The contract will transfer the specified amount of tokens to each recipient address in the list.
Implementation Details
The contract uses the ERC20 interface to interact with the token to be airdropped. It stores the list of recipients and their respective amounts in a mapping. The `startDrop` function iterates through the list and transfers the specified amount of tokens to each recipient address.
Best Practices
1. Ensure that the token contract has sufficient balance before initiating the airdrop.
2. Use a secure deployment process for the contract.
3. Test the functionality thoroughly before using it in a live environment.
Security Considerations
1. Access Control: Only the contract owner should be able to initiate the airdrop and update the recipient list.
2. Reentrancy: Ensure that the `startDrop` function is not vulnerable to reentrancy attacks. Implement appropriate safeguards to prevent malicious actors from interfering with the airdrop process.
3. Gas Optimization: Optimize the code to reduce gas costs associated with airdropping tokens to a large number of recipients.