What is MediBloc crypto?

Could you please elaborate on the concept of MediBloc crypto? How does it differ from other cryptocurrencies in the market, and what specific use cases does it have within the healthcare industry? Furthermore, how does its blockchain technology contribute to enhancing security, transparency, and efficiency within medical records and data sharing? Lastly, what are the potential challenges and opportunities that lie ahead for MediBloc as it continues to develop and gain traction in the crypto and healthcare sectors?