On March 12, on-chain data visualization platform Bubblemaps published an article on X platform to disclose the witch detection situation in BMT airdrop. 30% of the disclosure rankings are robots trying to use airdrops, which have been identified and cleared through clustering analysis. Bubblemaps added that they were supposed to receive a $20,000 BMT reward, but the addresses were linked to each other through SOL transfers and their application activity was unusually frequent, showing non-human behavioral characteristics.