According to CoinMeta, Mark Jeftovic posted on Bombthrower.com that the era of "Bitcoin being restricted to" has come to an end. Recent reports indicate that some cold wallets (Coldcard) have been stolen, resulting in the loss of users' funds, which has had a significant impact on the entire concept of self-management of assets. Jeftovic pointed out that since Genesis Block, the creed "not holding the private keys = not owning the coins" has always been a principle of Bitcoin, but the recent incidents have challenged this belief. The vulnerabilities in cold wallets have caused users who thought they were secure to lose all their assets. This incident has affected not only the manufacturers of cold wallets (Coinkite) but also had a profound impact on the concept of self-management of Bitcoin.