Majority of the ICOs are now asking for KYC documentation even to the bounty hunters. But the main reason for it is to remain compliant with the existing anti money laundering law.

Having a strict kyc guideline is now a requirement for majority of the ICOs. But such guidelines are directly against the nature of cryptocurrency. While a cryptocurrency is meant to be anonymous, such KYC guideline is actually ruining that basic fact. But if it helps a startup to continue their business in the cryptospace, we will welcome the change for sure!

Thise who need to use crypto for illegal business, they will anyways continue doing that by using fake KYC. So absolute achievement is not possible, but to some extent it can cut down the illegal activities.