Another thing you can do, create a website related to your service and promote it through facebook and do some SEO... I see that Seo won't be much tough to rank.
Posting here is not a bad choice tho because doing something is better than doing nothing. But I tell you what, peoples here are very privacy concerned and you may not get many calls so better keep the above options in your mind.
I guess many users in fiverr will still use fiat, for cryptocurrency use in payments, they will just double the amount they are going to pay basically because of the transaction fee. Maybe it could happen in the future, let's see
E D I T: going to lock this topic, thank you for the both of you