ADAB Solutions cannot borrow from or financially transact with someone whose wealth is completely, or predominantly, haram. If it is predominantly halal, then financial transaction, borrowing, accepting gifts, etc. would be permissible. If one is unsure, then the default assumption is that most of their wealth is lawful. ADAB Solutions doing KYC and AML on their investors and need not investigate deep into the wealth of investor, but rather the basis is what is apparent.
If the Majority of the profit the company makes is from a halal activity and you are not directly involved in the smaller haram aspect of it, then you aught to assume that your income is from the halal, and you won't be culpable.
If you find out that part of received money from haram sources best to give it to charity because you can't do anything else with it. But you shouldnt expect any reward for giving it to charity.
and Allah ta'ala knows best.
@AlexMilton - Thank you for the very well written post.
I highlighted the key point of your excellent post. The fact these Adab exchange people are not even vetting the source of the funds means by default they cannot call it a Halal or Shariah compliant project. The fact it is near impossible to vet every ICO investor means they should drop the use of the word "Shariah". They claim to have reached their soft cap figure last week. So what happens if 90%, 40% or 10% of the ICO funds (which are ranging between hundreds of thousands of US$ to millions of US$) are given to the Adab exchange team by a company or individual that owns websites and print publications promoting anti-Muslim sentiment and overtly uses obscenities to refer to the Muslim "God" and prophets. What if the investment was from a criminal (sitting in jail or on bail) who raped women or physically assaulted them on the basis of their head covering or choice of religion? What if the investment was from an organisation that had a sole purpose of manufacturing alcohol and distributing it in shops and bars?
By all means they can open their Adab Exchange and call it what it is... a crypto exchange because the team behind Adab Exchange are nothing other than a group of non-Muslims and those who claim to be Muslim with one goal in mind "profit". They should not falsely promote this project as "Shariah" compliant when it clearly is not