Multisignature is a scheme performed to protect an account from being compromised by a malicious user by allowing a group of trusted parties to sign a single document, mostly by producing a joint signature. Multisignatures are widely used in the cryptocurrency and fintech industries. Multisignature wallets are more protected from attacks than regular ones, due to the necessity of collecting the private data of several entities in order to hack them. Multisignature in Bitcoin, however, is technically not a multisignature, but just a protection with a number of additional distinct users’ signatures. There are a lot of multisignature Bitcoin and Ethereum wallets produced by third parties to provide supplementary protection for cryptocurrency users. Multisignature is often performed for corporate purposes to ensure a transaction is approved by management before initializing it.