1. Introduction 2. Negotiated Authenticity and its Vulnerability 3. The Authentication and its Authenticating Process 4. Information and Communication Technology and Digitalization in Heritage Tourism 5. Smart and Sustainable Marketing Frameworks for Heritage Tourism 6. Negotiated Authentication of Heritage Accommodations 7. Negotiated Authentication of Homestay Tourism 8. Negotiating Authentication of Nation Branding and Heritage Tourism 9. Negotiated Authentication of Museums 10. Negotiated Authentication of Ethnic Cuisines 11. Negotiated Authentication of Heritage Souvenirs 12. Conceptualizing a Smart Resilient Negotiated Authentication System in Transformative Times