Smart Contracts

Automate payments and ensure transaction security with blockchain technology

Overview

InvoiceDoodle's smart contracts provide automated, secure, and transparent payment processing on the blockchain. Our contracts are audited by leading security firms and optimized for gas efficiency.

Smart contracts automatically execute payment terms, handle escrow arrangements, and provide immutable proof of transactions. This eliminates the need for manual payment processing and reduces the risk of payment disputes.

Supported Networks

ETH

Ethereum

ACTIVE

Full smart contract support
Gas optimization
ERC-20 token payments

MATIC

Polygon

ACTIVE

Lower transaction fees
Faster confirmations
Ethereum compatibility

BSC

Binance Smart Chain

BETA

BEP-20 token support
Cross-chain integration
High throughput

Contract Examples

Simple Payment Contract

Basic smart contract for direct cryptocurrency payments

contract InvoicePayment {
    address payable public recipient;
    uint256 public amount;
    bool public paid;

    constructor(address payable _recipient, uint256 _amount) {
        recipient = _recipient;
        amount = _amount;
    }

    function pay() external payable {
        require(msg.value == amount, "Incorrect payment amount");
        recipient.transfer(msg.value);
        paid = true;
    }
}

This contract ensures that the payment amount matches the invoice and automatically transfers funds to the recipient.

Escrow Payment Contract

Advanced contract with escrow functionality for secure transactions

contract InvoiceEscrow {
    address public payer;
    address payable public recipient;
    uint256 public amount;
    bool public released;
    
    constructor(address _payer, address payable _recipient, uint256 _amount) {
        payer = _payer;
        recipient = _recipient;
        amount = _amount;
    }

    function deposit() external payable {
        require(msg.sender == payer, "Only payer can deposit");
        require(msg.value == amount, "Incorrect amount");
    }

    function release() external {
        require(msg.sender == payer, "Only payer can release");
        require(!released, "Already released");
        recipient.transfer(address(this).balance);
        released = true;
    }
}

This escrow contract holds funds until the payer approves the release, providing additional security for both parties.

Security Features

🔐

Multi-Signature Authentication

Require multiple parties to approve high-value transactions

📊

Automated Auditing

Real-time tracking and verification of all contract interactions

🛡️

Fail-Safe Mechanisms

Built-in protection against common smart contract vulnerabilities

InvoiceDoodle