You could use an intermediate step, like Charity Science's fundraisers (I'm sure there are plenty of other places that allow you to do this if Christmas/Birthday/Event doesn't fit your needs) so you can see how much is being donated. Then when you donate the whole lot to Givewell etc. at the end you can ask for a receipt/show it on your bank statement.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.