Nice way to implement thread-safe singleton pattern with enhanced security

design_pattern_singleton.cpp

#include <ctime>
#include <chrono>
class Singleton
{
private:
    Singleton() { }
    void operator delete(void*) {}; // such that its not deleted accidentally

public:
    Singleton(Singleton&) = delete; // Copy prohibited
    void operator=(const Singleton&) = delete; // Assignment prohibited
    Singleton& operator=(Singleton&&) = delete; // Move assignment

    static Singleton* getInstance();

    // This is a sample method
    std::chrono::system_clock::time_point getTime() const {
        auto now = std::chrono::system_clock::now();
        return now;
    };
};

Singleton* Singleton::getInstance() {
    static Singleton* pInstance_;
    return pInstance_;
}