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Miden wallet extension setup and seed phrase security
Miden Wallet Extension Installation Guide and Seed Phrase Security Best Practices
Install the browser add-on exclusively from the project's verified distribution channel, never from third-party sites.
Initial Configuration Steps
During creation, the interface will generate a 24-word recovery sequence. This code is the absolute master key for your account and assets.
Procedure for Recording the Recovery Sequence
Use a physical medium: pen and archival-quality paper resistant to water and fire.
Transcribe each term exactly, verifying the sequence twice against the screen.
Omit digital storage: no screenshots, cloud notes, or text files.
Secure Storage Protocol
Create multiple copies on durable material.
Store these copies in separate, geographically distinct physical locations (e.g., a safe deposit box and a secure home safe).
Inform a trusted legal heir or confidant of the storage locations, not the code itself.
Operational Safety for Daily Use
Assign a strong, unique password to the add-on itself. This password encrypts the local data vault on your device.
Treat the add-on as a daily spending account. For larger holdings, transfer assets to a vault that never connects its private keys to the internet, using only the recovery sequence for access.
Automatically reject any website, person, or service requesting your 24-term recovery phrase. Legitimate interfaces will only ask for transaction signing, never the master key.
Regularly verify the add-on's version and update it directly through your browser's official store to incorporate the latest protection patches.
Miden Wallet Extension Setup and Seed Phrase Security
Install the software directly from the official browser store to eliminate the risk of counterfeit code.
During initialization, the tool will generate a unique 24-word mnemonic recovery key; this sequence is the absolute master key for your assets and must be recorded manually on durable, offline media like steel plates, with digital storage (screenshots, cloud notes) being completely unacceptable. Verify the transcription twice, character by character, before proceeding.
Immediately after confirming the backup, configure a strong, unique password for local encryption of the vault's data; this adds a necessary secondary layer of protection, ensuring that even if your device is compromised, the funds remain inaccessible without this passphrase.
Store the physical backup separately from any device, ideally in a secure location like a safe, and never share the words or enter them on any website–legitimate interfaces will never request this information.
FAQ:
I installed the Miden wallet extension but can't find my seed phrase. Where is it stored?
After installing the extension and creating a new wallet, the seed phrase is shown only once on a single screen. The extension itself does not store this phrase in plain text anywhere you can view later. It's used to generate your keys and then encrypted locally. If you didn't write it down during that initial setup, you will need to create a new wallet. This is a security feature to prevent malware on your computer from easily finding the phrase.
Is it safe to type my Miden seed phrase on my computer to import a wallet?
Typing your seed phrase on any internet-connected device carries risk. Keyloggers or other malware could capture it. The safest method is to import a wallet using a hardware wallet. If you must use the seed phrase, ensure your computer is free of malware, your OS is updated, and consider doing it on a clean, offline device if possible. For daily use, once imported, the extension uses the locally encrypted data, so you won't need to enter the phrase again.
What's the difference between the seed phrase and the wallet password in the Miden extension?
These protect different things. Your 24-word seed phrase is the master key to all your accounts and funds. Anyone with it has complete control. The wallet password you set in the extension only locks the local data on that specific browser. It prevents someone with physical access to your computer from using the extension, but it does not protect against someone who has stolen your seed phrase. You need the password to access the wallet on your device; you need the seed phrase to restore the wallet anywhere.
Can I use the same seed phrase from another wallet (like MetaMask) in the Miden extension?
No. The Miden extension is for the Miden Virtual Machine, a different system using STARK proofs. Networks like Ethereum or MetaMask use a different cryptographic standard. Their seed phrases generate a different set of keys. You must create a new, separate seed phrase specifically for your Miden wallet. Never enter a seed phrase from another wallet type into the Miden extension.
My computer crashed after I wrote down half the phrase. Can I recover the rest from the extension files?
No. The extension is designed so you cannot retrieve the full, plain-text seed phrase after the initial setup screen closes. The stored data is encrypted. If you did not complete writing down the phrase, the only option is to create a new wallet with a new seed phrase. Any funds sent to the partial phrase's address will be lost. This underlines why writing all words in order on durable material before proceeding is necessary.
I installed the Miden wallet extension, but I'm confused about the seed phrase. What exactly is it, and why is it so important?
The seed phrase, often a 12 or 24-word list, is the master key to your wallet. It's generated from a massive pool of randomness, creating a unique sequence. This phrase is the root of all the cryptographic keys that control your assets on Connect Miden Wallet to dApp. If you lose access to your browser or the extension, this phrase is the only way to recover your wallet and funds. Anyone who sees these words can take control of everything in that wallet, permanently. Its importance cannot be overstated; it is the wallet itself.