This property defines the Unicodes which belongs to Coptic block
Characters like Ⲁ,ⲁ,Ⲃ, etc. are listed under Coptic Block.
124 Characters are present in Coptic Block starting with the Unicode point U+2C80 that represents the character Ⲁ.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.