bc1qqufv8dyxtxhk2twys6rpeq3yc9mn6wka6lx09q is used by Bureau 24 times - their *cough* winnings were paid by Heisenberg_Hunter (the co-organiser of the competition) in [TX]

Those funds were moved from bc1qqufv8dyxtxhk2twys6rpeq3yc9mn6wka6lx09q to 3KLWUh3zZuHqawhWQcn5uKDnLMVrevPzCb [TX here] also used by Bureau and then sent directly to the wallet address 33ze68qZoBE9R4uMtRQGNnvgFTYN4sPBUq [TX here] which has been identified in five seperate threads as being owned by a scammer.

Of the nearly 700 wallet addresses swept in the almost 20 BTC transaction, the wallet address 3KHmL3fZQhDTuidC7f8dMcmXugu4rrWtSc (used by Bureau) is the "change" address with a little bit of dust remaining.

Follow the money/merit/trust