Apart from Pineapple fund there is Bithope. You can start a campaign there. Right now there is a campaign running, no child should grow up alone - Radi's new Christmas. The campaign has a video and backed by a popular NGO, SOS Children's Villages.
https://bithope.org/campaign/support-radis-new-christmas-campaignAnd there is another campaign, support Edward Snowden, here's how we take back the internet. Short description and Snowden's official Bitcoin address.
https://bithope.org/campaign/support-whistleblower-edward-snowden-with-bitcoinNot saying you are a scammer, but like you said you will register a charitable foundation and upload a video, you have to do these things first to make your cause look legit or you have to be someone like Snowden. Have you volunteered for any NGOs that are into helping sick children in you locality? Rather than registering your own foundation, for a start isn't it better to associate yourself with a well-established NGO supporting your same cause (fundraising for sick kids) and start an online campaign on Pineapple funds or Bithope?
You think this person might not be a scammer?
Ask yourself this, what reputable charities are on this forum begging for money? Most reputable charities don’t know about bitcoin or how bitcoin works so why would they beg for bitcoin? What reputable charity have you ever seen go to a public forum and beg for money? What reputable charity does not have a website? Why would a respectable charity that may know about bitcoin know about Ethereum and ask for donations in that too (maybe Litecoin but not Ethereum)?
If your still not convinced, Belarus requires all charities to register. Ask for the registration number. If you really want to help sick children in Belarus then contact the Belarusian Children’s Fund here:
http://www.bcf.by/en/I realized that you are a skeptic. Well .. I indicated the two most popular crypto-currencies.
I'm not an authority charitable organization. I am an individual and I want to prove my competence before registering the fund.
Accepting donations in the crypto currency is simpler and more effective today. No fund accepts the crypto currency today and this slows down the collection of donations.
And once again I want to say that I am ready to show my passport to prove that I'm not a fraud. But I am sure that you will say that I am a scammer, even if I disclose my data.