All About Multisig Wallet

In traditional business, something known as "key person risk" comes into the scene when an organisation depends too much on an individual to succeed. Crypto business is prone to a very literal version of this risk when it comes to handling funds. But multisig wallets come with a built-in way to manage such risks.

Let’s take a closer look at what multisig wallets are.

What is a multisig wallet?

Multisig wallets refer to crypto wallets which require two or more private keys to sign and make a transaction. In order to access the wallet, the storage method needs multiple cryptographic signatures (the unique fingerprint of a private key).

You can benefit from improved security with multisig wallets because they store private keys in various locations. Also, using multiple keys to sign cryptocurrency transactions offers better scope for usability. 

Some other key pointers of a multisig wallet are:

• Every co-payer linked with the wallet can see details of different funds and transactions in the wallet. 
• All co-payers receive a unique recovery phrase. Also, the wallet will no longer have the necessary number of co-payers to sign a transaction in case a co-payer loses the recovery phrase.
• Multiple co-payers must sign a transaction to send funds from a multisig wallet, hence improving its security.

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Understanding the working of a multisig wallet

The working of a multisig wallet can be best understood with the help of an example.

Suppose there is a bank vault which needs more than one key to open, and the user can choose the number of keys allowed to open the vault and the minimum number of keys required to unlock it. For instance, there is a 2-of-3 multisig in which two of the three private keys are needed, etc.

It works in this manner - Mark, Craig and Justin set up a multisig wallet where each holds a key, and two out of the three keys should be present to send a transaction. 

To make a payment, Justin will generate a transaction, sign it with his key and then send this transaction to Mark, who will sign it with his key. Mark can either send it back to Justin for finalising the transaction or send it to Craig to sign as well. However, this final step is not required as only two of the three keys are necessary to unlock the wallet.

Typically, hardware wallets are the go-to option for using a multisig setup. This is because they are the safest way to store a private key. After these wallets combine into a multisig setup, they form a completely new multi-signature address independent of every individual hardware wallet.

Types of multisig wallets

• 2-of-2 multisig wallets

2-of-2 multisig wallets depend on two-factor authentication and storage of private keys on various devices. 

This implies you can store a private key on a mobile device and another one on a computer. It is also possible to authorise transactions without signatures from both devices. Even though 2-of-2 multisig wallets provide improved security, there exists more probability of losing access to funds because of compromised devices. 

• 1-of-2 multisig wallets

1-of-2 wallets help share funds among multiple users. To share funds in a single wallet with a trusted party, you can set up a wallet that allows any private key to develop the signature. Thus, you won’t require both keys to operate the multisig wallet, as every party can access funds without any intervention from the other.

• 2-of-3 multisig wallet

The 2-of-3 multisig wallets require two out of three private keys to authorise transactions. Generally, these wallets are an ideal option for exchanges to enhance hot wallets' security. The functionalities in these wallets empower exchanges with improved security functionalities.

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Advantages of multisig wallets

• Multisig wallets can help lower security concerns which are generally evident in the case of single private key wallets. 
• These wallets provide security from cyber-attacks because they lower the potential vulnerability points.
• It facilitates limited dependency on one device or individual for transactions. You, as a user, can save your private keys separately on several devices to ensure easier access to their cryptos. 

Setbacks of multisig wallets

• Multisig wallets do not have legal custodians for the funds in shared wallets. Thus, seeking legal help in case of unforeseen circumstances is challenging. 
• The recovery procedure is pretty complex and tedious as it requires importing recovery phrases on a distinct device.
• The configuration of multisig addresses is a huge challenge for multisig wallets. You need the right technical knowledge and skills to find your way around these wallets. 
• Slow transaction speed is another huge setback linked with a multisig wallet. Multisig wallets rely on a particular location, third party or device to sign transactions and access the wallet.

Bottom line

Multisig wallets come with several interesting applications, thereby making cryptocurrencies even more appealing and useful - particularly for businesses. By needing more than one signature to transfer funds, these wallets offer improved security and enable trustless escrow transactions. Plus, this technology will likely witness higher usage in the future.