There is a huge research gap where the legal contracts with the challenges concerning vagueness and ambiguity have not been addressed. This research work is focused on addressing and tackling the open problem caused due to ambiguity and vagueness and how an ambiguous legal contract can be converted into ambiguity and vagueness-free blockchain-based smart legal contract. With the use of Fuzzy Logic and Artificial Intelligence, formal proof-of-concept methodologies have been developed that consist of several architectures, models, and algorithms that have made this work novel in this field which has resulted in several publications in top conferences.