Show a button for sending quick donations to maintainers of bots, groups or channels using cryptocurrency. This could use either an established cryptocurrency like Bitcoin, Etherium, EOS, etc. – or some version of TON.
No, explain how you can trick a user into cryptocurrency if the user has to want to transfer the money themselves. If this channel or bot is fraudulent, Telegram will notify you with a "Scam" icon next to the channel/bot name.