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Miden wallet extension setup and seed phrase security guide



Miden Wallet Extension Installation and Seed Phrase Protection Guide

Install the browser add-on solely from the official distribution channel, never from third-party sources or forum links.

Initial Configuration Steps

After adding the tool to your browser, launch it. Select the option to generate a new account. The software will produce a 24-word mnemonic recovery key. This sequence is the sole method to regain access to your assets.

Recording Your Recovery Key

Write each term on durable, non-digital media. A metal plate designed for this purpose offers superior protection against fire and water compared to paper.


Never store this phrase digitally: no screenshots, cloud notes, or text files.
Transcribe the words in the exact order presented. Verify the spelling twice.
Create two copies. Store them in separate, secure physical locations like a safe or lockbox.

Post-Recovery Verification

Immediately after recording, the interface will request you to re-enter specific words from the sequence, such as the 3rd, 7th, and 15th terms. This confirms your record is accurate. Failing this check means your recorded phrase is wrong; you must restart the generation process.

Operational Safety Protocols

Assign a robust password exclusive to this add-on. This password encrypts the local database on your device; losing it necessitates using the 24-word phrase for restoration.


Before authorizing any transaction, double-check the recipient's full address directly in the blockchain explorer.
Reject connection prompts from unfamiliar or unverified decentralized applications.
Maintain your browser and operating system with the latest security patches.


Treat the 24-word key with the same confidentiality as the master key to a vault. Its exposure grants irrevocable control of your holdings to anyone who possesses it. No legitimate support entity will ever ask for these words.

Handling Compromise or Loss

If you suspect the mnemonic phrase is observed or your device is infected, move your funds immediately. Generate a fresh account with a brand-new 24-word key on a clean, secure machine. Transfer all assets to this new address. Consider the original phrase permanently tainted.


For long-term storage of significant value, a hardware-based signing device is the standard. It keeps the recovery key entirely offline, while the browser add-on handles transaction proposal and broadcast.

Miden Wallet Extension Setup and Seed Phrase Security Guide

Install the software directly from the official browser store, then generate your mnemonic recovery key offline before any initial connection to the network.


Transcribe the 12 or 24-word mnemonic onto specialized, fire-resistant metal plates stored in separate physical locations; never store a digital copy, including screenshots or cloud notes. Validate the backup by performing a full restoration on an air-gapped machine to confirm accuracy, then permanently delete all test instances. Treat this private recovery sequence with greater physical diligence than cash or passports, as its compromise guarantees irreversible loss of access with no centralized recourse for asset recovery.

FAQ:
I installed the Miden wallet extension but I'm confused about where the seed phrase is shown. Is it during the initial setup or later?

The seed phrase is only shown once, immediately after you click "Create New Wallet" during the initial setup. The extension will generate and display your 12 or 24-word recovery phrase on a dedicated screen. You must write it down at this exact moment. The extension will not show you these words again in full on-demand for security reasons. If you proceed without saving it, you will have no way to recover your wallet if you lose access to your browser or device.

Is it safe to store my Miden seed phrase in a password manager like Bitwarden or 1Password?

Using a reputable password manager is generally safer than storing the phrase in a plain text file or email. However, it introduces a different risk profile. Your seed phrase's security then depends on the master password and security of the password manager's vault. For maximum security against digital threats, the established best practice is to write the phrase on paper or metal and store it physically. A balanced approach is to split the phrase: store part in a password manager and the other part physically, ensuring neither storage method holds the complete phrase.

What happens if I clear my browser cache or use a different computer? Will I lose my Miden wallet?

Yes, if you only have the wallet extension installed and you clear browser data or switch devices, the local wallet data will be lost. The extension stores your encrypted keys locally in your browser's storage. This is why your seed phrase is critical. To regain access, you would reinstall the Miden wallet extension on the new browser or computer and select the "Restore Wallet" or "Import Wallet" option. You then enter your saved seed phrase to fully recover your wallet, addresses, and assets on the new setup.

Can someone steal my assets if they only get the wallet's public address?

No. A public address is for receiving funds only, similar to sharing your email address to receive messages. It cannot be used to spend or move assets from your wallet. The private key, secured by your seed phrase, is required to authorize transactions. Sharing your public address is necessary and safe for receiving payments. The real danger is exposing your seed phrase or the wallet's encrypted file along with its password.

I've written down my phrase. Should I also set a separate password in the Miden extension, and what does it do?

Setting a separate wallet password in the extension adds a necessary layer of daily protection. This password encrypts the wallet's data stored locally in your browser. Without it, anyone with physical access to your unlocked computer could open the extension and transact. It protects against casual access. However, this password only guards the local copy. It does not replace your seed phrase. If you forget this password, you can use your seed phrase to restore the wallet on a new browser and set a new one. Always use a strong, unique password here.

I installed the Miden wallet extension but I'm confused about the seed phrase. Is it stored anywhere on my computer after I write it down?

No. Once you generate your seed phrase during the initial Miden Wallet Edge extension wallet setup, it is displayed on your screen for you to record physically. The extension itself does not store the complete, plain-text seed phrase on your computer's hard drive or in its local storage in a way that is easily accessible. Its primary secure storage method is the encrypted keystore file, which is locked with your password. This is a critical security design. The only complete, readable copy of those words should be the one you write down on paper. Never save a photo, screenshot, or text file of your seed phrase on any device. If you lose the paper copy, you must rely on your password to access the encrypted keystore within the extension. If you lose both the paper seed phrase and forget the password, your funds will be permanently inaccessible.