img width: 750px; iframe.movie width: 750px; height: 450px;
fast wallet dApp wallet extension setup and usage guide
Fast wallet extension setup and usage guide
Download a single file from the Chrome Web Store or Firefox Add-ons page matching your browser version. The current stable release (v0.4.2 as of October 2024) is 2.1 MB. After installation, the tool will prompt you to create a new identity. Use the Secret Recovery Phrase option–write down the 12 words on paper, not in a text file or screenshot. Store this sheet in a fireproof safe; it is the only backup for funds on Polygon, Ethereum, and BNB Chain.
Configure your primary network immediately. Click the gear icon, select Networks, and add a custom Remote Procedure Call endpoint. For Ethereum mainnet, use https://eth-mainnet.public.blastapi.io. For Polygon, use https://polygon-rpc.com. Confirm the chain ID matches: Ethereum is 1, Polygon is 137. This prevents transaction failures to incorrect chains. After adding, set one as your default by clicking the radio button next to its name.
Fund your new address by copying the public key from the main dashboard (starts with 0x). Transfer at least 0.01 ETH (or gas token) to cover initial fees. For testing, use a faucet like Goerli Faucet for testnet ETH. Do not use mainnet funds until you confirm the address receives tokens by checking a block explorer like Etherscan. Enable Show gas tracker under Advanced Settings to monitor current gas prices in real-time.
Execute your first transfer: click Send, paste the recipient’s public key, enter the amount in wei or ether, and set the gas limit to 21,000 for a simple ETH transfer. Adjust the priority fee to 1-2 Gwei for quick inclusion in the next block. Confirm the transaction and wait for the completion popup. For added security, activate Require approval for all purchases in the Connections tab to prevent automatic signing on any site.
How to install the extension from the Chrome Web Store and verify its authenticity
Open your Chrome browser and navigate directly to the Chrome Web Store search page. Type the precise official name of the application into the search bar, avoiding any abbreviated terms or third-party suggestions. The listing must display a publisher name matching the project’s official GitHub or website, such as "MetaMask" for a widely used digital asset tool. Check the "Offered by" line beneath the extension title; if it lists a random individual or an unfamiliar company, abort the installation immediately.
Click the "Add to Chrome" button only after confirming the store badge shows "Featured" and the rating exceeds 4 stars from over 10,000 reviews. Inspect the total number of users–a reputable tool typically has millions of installations. Scroll to the "Privacy practices" section and verify that the listed permissions align with the application’s function. For a cryptocurrency token manager, requests for "Read your browsing history" or "Access your data on all websites" are unjustified red flags.
After clicking "Add extension," a pop-up will display the specific permissions the software requires. Reject the prompt if it demands access to "Clipboard read" without a clear justification, as this often indicates data harvesting. Confirm that the permission list matches the developer’s published audit reports. For example, a hardware device interface tool should only seek "USB device access" and "Storage" permissions, not "Microphone" or "Camera" access.
Once installed, navigate to the browser’s puzzle-piece icon in the top-right toolbar and click "Manage extensions." Locate the newly added item and toggle "Developer mode" to expose the ID string. Copy this unique identifier and cross-reference it against the project’s official documentation. A mismatch between the listed ID and the one on the developer’s official repository means the published version is fraudulent–remove it immediately.
Right-click the toolbar icon for the tool and select "Inspect pop-up" to open the debugging console. Examine the "Sources" tab for any obfuscated JavaScript files containing domain names unrelated to the official project. Legitimate code will reference the developer’s known server URLs (e.g., api.metamask.io for a known client) and will not attempt to connect to unregistered IP addresses. Compromised variants often inject code that routes traffic through proxy servers.
As a final safeguard, visit the official project website directly–not via search engine ads–and locate their "Security" page. Many projects publish the SHA256 hash of their Chrome Web Store package. Generate the hash of your downloaded .crx file using a command-line tool (e.g., `shasum -a 256` on macOS or `certutil -hashfile` on Windows) and compare it to the published value. Any discrepancy proves the store listing has been replaced with a malicious copy.
Q&A:
I just installed the extension, but it’s asking me for a recovery phrase. I don’t have one yet because this is my first time. What am I supposed to do on the setup screen?
You’re seeing the option to "Import Wallet" using a recovery phrase, but since you’re a new user, you need to look for the button that says "Create New Wallet" or "Get Started." This is usually a small link or a different tab at the bottom of the import screen. When you click that, the extension will generate a brand new wallet for you. It will then show you a list of 12 or 24 random words—this is your "seed phrase." Write these words down on paper. Do not take a screenshot, do not store them in a text file on your computer, and do not type them into any website. After you confirm you wrote them down correctly, the wallet will be created and you can set a password (PIN) to unlock the extension locally. That password is just for your browser, not for recovering the wallet.