On March 12, Bubblemaps, an on-chain data lake visualization platform, published an article on the X platform to disclose the detection of witches in BMT airdrops. It was revealed that 30% of the leaderboards were robots trying to use airdrops, which had been identified and cleared through cluster analysis. Bubblemaps added that they should have received a $20,000 BMT reward, but these addresses were correlated through SOL transfers, and their application activity was unusually frequent, showing non-human behavior characteristics.