For years, a Chinese-language market for crypto scammers and money launderers—by some measures, the internet's biggest black market of all time—operated in plain sight on the messaging service Telegram, facilitating tens of billions of dollars in illicit finance. Now, thanks to the scrutiny of one team of crypto crime researchers and Telegram's ban hammer, it's gone. Haowang Guarantee, the crypto-fueled crime bazaar more widely known by its original name, Huione Guarantee, declared in an announcement posted to its website sometime in the last 24 hours that it would be shutting down. Since July of last year, Elliptic has highlighted the enormous volume of money laundering and other illicit transactions taking place on Huione Guarantee and later Haowang Guarantee. When WIRED asked Telegram about Elliptic's findings regarding both markets, the company responded with broad bans of Xinbi Guarantee and Haowang Guarantee accounts.