A person or entity that has partial control and access over a cryptocurrency wallet.
Co-signing the release of cryptocurrency funds may be required in different scenarios. One of the most popular ones is simple security enhancement of a personal wallet: by using a multi-signature wallet and storing the signatures needed to open it on several different devices, a single user can protect themselves from the loss or theft of one or more of the keys.
Another important use case is relevant to businesses: storing the majority of a company’s cryptocurrency funds on a single-signature wallet subjects them to excessive security and organizational risks. By requiring the keys of a majority of multiple co-signers (for example, board members) a multi-sig wallet protects its contents from misuse or outright theft by a single employee.
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