cursor-auto-free/server/models/LicenseKey.js

const mongoose = require('mongoose');

const licenseKeySchema = new mongoose.Schema({
    licenseKey: {
        type: String,
        required: true,
        unique: true
    },
    isUsed: {
        type: Boolean,
        default: false
    },
    generatedAt: {
        type: Date,
        default: Date.now
    }
});

module.exports = mongoose.model('LicenseKey', licenseKeySchema);