I wanted to make a quick note that you can sell YouTube channels and I have a way to do that I think is secure for the buyer and the seller. So as of right now, this is incomplete, but I will come back to it.
- Do these things all in one go (could you use escrow or something?)
- use the domain of the business or entity you are selling
- check for recovery accounts and phone numbers
- make the switch of the domain and hand over emails and passwords
- change passwords
- …