You want to start allowing users to tip creators for their awesome content, similar to the way Twitch viewers can tip "bits" to streamers, which they can eventually cash out for real money.
The tips are expected to be very small, a few cents here and there.
How would you solve this? Maybe try to do exactly what Twitch does? Seems like it would be a heavy, expensive lift to try to navigate all the tax complexities. Perhaps Stripe could help?
I would probably avoid doing this at all costs unless it was perceivable that it would result in significant return, significant enough to justify the initial pain and ongoing costs.
Someone else mentioned KYC, which is also very important here to avoid fraud and potential legal issues. KYC is not easy to get working because bad actors will always find a way to break it. It is also not cheap and is very heavy with overhead.
Be aware that engaging in these things may also put you in the hook for complying with laws like GDPR or equivalent, depending on the data you store and how, which can add to things.
I'd pay someone who knows taxes, and I'd set a minimum withdrawal