In this paper a decentralized application proposed to improve the medical insurance process by enhancing transparency, security, and efficiency using Blockchain Technology.
However, there's a mistake in the sentence since I don't think the author wanted to say that a decentralized application was proposing solutions to medical insurances. AFAIK we are not yet at the point where applications are sentient and propose solutions. Probably the author wanted to say "... decentralized application IS proposed to improve ..."
> The sentence is almost grammatically correct, but it needs a slight adjustment to clarify who or what is doing the proposing. Here's a corrected version:
> "In this paper, a decentralized application is proposed to improve the medical insurance process by enhancing transparency, security, and efficiency using Blockchain Technology."
> This sentence now clearly indicates that the paper is proposing a decentralized application.