Champaign with payment in bitcoin or ethereum will give us certinity although its price cheap when bitcoin price drop. But if compared with token Bounty , no one could guarantee that we will received our Bounty reward. As we know many dev team cut bounty allocation , or even didn't paid at all. Working in this Champaign sometimes will make us angry or bored to do Bounty task.
You can take part in signing bounty to pay for bitcoin and Ethereum if you are selected and in a category to support signatures due to strict rules. Not everyone can follow the bounty signature with bitcoin or Ethereum payments.
usuallly it has strict rules , not all rank could participate in signature campaign with btc payment. Although it has less amount but there is no chance to scamm. Most of Bounty manager that handle it has good reputation, they really filtered which is participants or project that will accept. Hopefully all Bounty manager did it , so scam projects possibility will decrease alot.