local our %copy;
*copy = \%hash;
[download]

should be

our %copy;
local *copy = \%hash;
[download]

Or if you prefer,

local *copy = \%hash;
our %copy;
[download]

What's the point of localizing %copy? Depending on whether you do it before or after the aliasing, you either localize a variable you never use, or you localize %hash.

But you do modify *copy, so you should localize that.

I want to know what package does those hash textgraphs you posted.

Notepad.