adshrink-it is an old shortener. I friend of mine was using it back in late April this year and he told me got paid. The site seems legit and the CPM is quiet good.
Some DOMAIN info:
Domain is registered on 2019-02-08
Payment options:
PayPal and Bitcoin with minimum for withdraw $10.
Payment schedule:
The payment request will be made automatically every month.
Worldwide deal (lowest payout rate for all countries): $2.50 (tested and true)