Membership NFT Factory — Sub Protocol

Contract Details

Categorycontracts

Files12

Price$12.99

Tech Stack

Solidity ^0.8.24 OpenZeppelin v5 Foundry

Chains

Ethereum Arbitrum Base Optimism Polygon

Description

NFT-based subscription contract following the Unlock Protocol pattern. Mint membership NFTs with configurable tiers (Bronze, Silver, Gold), expiration timestamps, and automatic grace periods. ERC-721 compliant with on-chain metadata and batch minting support.

Features

✓ ERC-721 membership NFTs with on-chain metadata
✓ Configurable tiers: Bronze, Silver, Gold (extensible)
✓ Expiration timestamps with auto-grace periods
✓ Batch minting for airdrops and partner onboarding
✓ Ownable2Step governance with timelocked tier changes
✓ ReentrancyGuard on all payment functions
✓ Revenue withdrawal with split support
✓ Full Foundry test suite with fuzz tests

membership-nft-factory.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/// @title Membership NFT Factory
/// @notice NFT-based subscription contract with tiers and expiration.
contract MembershipNftFactory {
    address public immutable owner;
    uint256 public constant VERSION = 1;

    event Initialized(address indexed deployer);

    constructor() {
        owner = msg.sender;
        emit Initialized(msg.sender);
    }

    // ... full implementation in purchased package
}