kb User Registration Guide How long does it take for the participant verification to finish? Participant verification may take up to three business days, after which time you will be notified via email of your eligibility to participate in the GAIN tokensale event. 1 0 Related Articles Can I participate if I’m a US resident or citizen? My registration was denied. What should I do? I would like to update my KYC information. What should I do? Can I participate with a higher amount of contribution than I’ve stated during my registration? Can I participate with a lower amount of contribution than I’ve stated during my registration?