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How Long is a Seed Phrase

We have several articles in which we answer certain doubts related to the seed phrase due to the immense importance it represents for those who wish to protect their cryptoassets.


Today, we have decided to talk about how long is a seed phrase and how it influences security according to the length we choose.


Let's get started!


Standard lenght of seed phrases


Seed phrases, also known as retrieval or mnemonic words, usually have a fixed length that varies depending on the wallet configuration you use.


The length of these phrases directly affects the security and recoverability of your wallet.


There are 3 versions like, which are:


12 words


The 12-word length “is the standard” because it has a higher usage.


This recovery phrase is generated by a process that combines random words from a list of 2048 words (as defined by the BIP39 protocol).


These 12 words provide a reasonable level of security for most users, adequately protecting their assets against unauthorized access.


18 words


Although not as common, the 18-word option is also available in some wallets.


It is used when the user needs to generate a stronger key for their digital assets, the more words, the harder it is to crack.


24 words


Continuing the previous trend.


The 24-word format is the longest, therefore, it provides greater security for those who have significant assets in their wallets or want an additional level of protection.


However, its handling and storage is also much more complex.



how long is a seed phrase?


How does the length of the seed phrase influence security?


Which is better for me, a 12 or 24 seed phrase?


Well, the length increases the resistance to attacks and decryption becomes costly in terms of brute force.


Of course, the length alone does not guarantee anything if you have your words stored on paper or in a digital file without encryption.


In this case, the best would be a cryptographic cold storage device that has all the functionalities such as creation, storage, cloning and PSBT transactions like Cuvex.


Cuvex device

And if you already have experience in this topic and you have a seed generated by a third party, pay attention because with Cuvex you can create your own wallet100% offline, participating in the entropy process of the seed phrase manually and physically, using the "Dice and Coin" standard, which ensures the highest quality seed phrase creation.



This is only a small portion of all what we can tell you! So keep reading our blog 😉.


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