江苏大妈6万枚比特币和陈志的12枚比特币，最终还是没有去中心化

Core Insights - Two individuals, Chen Zhi and Qian Zhimin, have emerged as major fraudsters, with significant amounts of Bitcoin confiscated from them, highlighting the challenges of using decentralized currencies for illicit activities [1][3]. Group 1: Fraudulent Activities - Chen Zhi, associated with the Prince Group in Cambodia, had approximately 130,000 Bitcoins seized, valued at around $15 billion, obtained through threats, illegal detention, and fraud [3]. - Qian Zhimin, the actual controller of Tianjin Lantian Ge Rui Electronic Technology Co., had about 61,000 Bitcoins confiscated, worth nearly 50 billion yuan, through high-yield investment schemes that ultimately led to investor losses [3][5]. Group 2: Money Laundering Techniques - Both individuals converted their illicit gains into Bitcoin to launder money, purchasing high-value assets like real estate, yachts, and luxury cars to enjoy material benefits while attempting to legitimize their illegal earnings [3][5]. - The use of non-custodial wallets, which are secure and not subject to freezing by authorities, was intended to protect their assets, but ultimately, the keys to these wallets were compromised [6][9]. Group 3: Legal Consequences and Challenges - The confiscation of their Bitcoins raises questions about how authorities can access the private keys necessary for seizing assets stored in non-custodial wallets, often relying on coercion of associates to reveal these keys [6][9]. - Chen Zhi's current whereabouts are unknown, indicating that he has evaded capture, while Qian Zhimin has admitted guilt in a UK court regarding money laundering activities [9].