Look at that cute Elephant! That's Dwindly a website that pays people in Bitcoin & Ethereum for promoting short URL links created by them. They have some extra tools like mass URL shortener among a website script that allows Dwindly to send an ad when someone exits or enters to a website, offers multiple choices here. Get 25% by referring friends to use the service. Here is a test link for you to try how the ads look like.
Crypto-Loot is a multi use site its not for URL Shorteners, it also offers Cryptojacking scripts and captchas for people to implement on their website. Everything is paid through Monero in this site, which is very popular crypto-currency. This service however works differently with short URL's it doesn't show you ads instead it uses hash rate (Which you are able to set yourself) when person enters to the link, default is 1024 hashes and thats something that probably takes below a 1 minute to pass depending on computer. Does this pay more than the advertising model? Not sure.
LinkShrink is pretty great service able to payout in Litecoin, Ethereum, Bitcoin and fiat options of PayPal and payoneer which have smaller payment thresholds. Among this there is fullsite scripts, mass URL shorteners and Custom URL links. Here is a test link for LinkShrink. Also they have pretty nice referral program.
Next up we have Linkrex, which is another Crypto/Fiat link shorten service that you may consider using. Their system works bit differently since its not just waiting time people also have to complete a captcha to pass through the location. They also have mass shorten tools among a Wordpress plugin and a full site script service. Example of their short link.
Then we have Linktor, which is similar to Linkrex since they pay both in PayPal, Bitcoin & Paytm. I'm not quite certain but it seems they use same technology and model as Linkrex and might be even owned by same people actually. However they have lower threshold for Bitcoin payments in their service and don't have payoneer option. Example of Linktor Link.
When it comes innovators of the short URL space, Linkbucks is among AdFly are ones that started the whole thing - they have been around for very long time. While their bitcoin rate may not sound best out there, there is something that Linkbucks have that most competition don't and thats popunder links. Also among this they have site enter link and also full site script options.
Another option that gives you a cool crypto URL and lets you track traffic where the clicks from in the world. However this site doesn't pay you anything for these clicks even though they display advertisements on their URL's, maybe not best option out there.
Mellow ads is one of the biggest Crypto currency advertisement sites, its really hard to get your own site registered actually. But they also offer advertising services among a URL shortener that has 7 different URL choices. Example of one their links.
There are other services out there, but since i haven't vetted them and don't know if they are even paying - i will not be listing them right now. You can always contact me on comment section below and if its closed emails to [email protected] and i will answer usually to them in next 72h