Por que os Bitcoiners avançados devem considerar a atualização para um backup Shamir
Self-custody is an absolute must for every bitcoiner. After the collapses of FTX, BlockFi, Celsius and many others, the merit of the “not your keys” mantra is beyond obvious. However, self-custody comes in many forms, and the security properties of a single-seed setup are not that great. That is why advanced bitcoiners should consider upgrading to a Shamir backup. What is Shamir backup? Shamir backup is a method for securely splitting a recovery seed while adding an element of redundancy. For example, with Shamir backup it is possible to have a 3-of-5 recovery seed, where the user writes down 5 lists of recovery words, and later needs only 3 of those lists to recover the wallet. Compared to a setup based on a single list, this brings some serious benefits. Fail-safe setup An ordinary single-list seed is susceptible to a catastrophic loss in case a user loses the list or when a malicious actor discovers it. Mitigating both of these risks simultaneously is impossible in the single-seed scenario: the risk of loss can be decreased by creating multiple copies, but that increases a risk of theft; the risk of theft can be decreased by having a single copy, but that increases a risk of









