AlzheimerChain is the first global app using blockchain technology, collecting data for early detection of Alzheimer's disease by rewarding its participants and promoting healthy life in order to prevent the disease and other causes of dementia. AlzheimerChain connects novel Fin-tech industry with screening and preventive initiatives and brain disease research to offer alternative to existing, frequently inefficient ways of Alzheimer's disease research funding. Bridging these areas offers many synergies and brings new opportunities for both fields.