you are trying to make some kind of coin that will be easy to look very beautiful and covered with drogocene metals or I misunderstood you
Hello. Thanks for your question.
The term "Backed" which is widely used by competitors doesn't show full image of the project.
"Covered" used in means of "Refunded" (Oxford Dictionary
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Covered = Backed = Refunded = Supported
Hope now it's more understandable.