Web3 Authentication Bridge • NOT a Wallet

Connect Your Wallet to CTJ

Sign in securely to Crypto Trading Journal using your existing Web3 wallet (MetaMask required). No passwords, no seed phrases shared — just cryptographic signatures. This extension bridges your wallet for authentication only.

Install from Chrome Web Store Visit Main App

Available on Chrome Web Store

REQUIRES MetaMask or similar wallet extension already installed. Install the extension directly from the Chrome Web Store for automatic updates. Manual installation instructions are available below as an alternative.

This is NOT a Cryptocurrency Wallet

This extension is an authentication bridge that connects your existing wallet (MetaMask, Brave Wallet, etc.) to Crypto Trading Journal for passwordless sign-in. It does NOT store private keys, send/receive crypto, or provide wallet functionality. You must have MetaMask or another EIP-1193 compatible wallet extension already installed.

Before You Begin

Make sure you have these ready

Chromium Browser

Chrome, Brave, Edge, or Opera. Any Chromium-based browser will work perfectly.

Web3 Wallet (REQUIRED)

MetaMask required (or Brave Wallet, Coinbase Wallet, Rabby). This extension cannot work without an existing wallet extension — it's an authentication bridge, not a standalone wallet.

5 Minutes

The entire setup process is quick and straightforward. No technical expertise required.

Install the Extension

Get it from the Chrome Web Store for automatic updates

Chrome Web Store Download ZIP (Manual)
Latest: v2.2.6 • Updated Feb 2026

Manual Installation Guide

Alternative: follow these steps if you prefer to install from the ZIP file

Select your browser — instructions will update automatically

2

📂 Extract the ZIP File

Unzip the downloaded file to a permanent location on your computer.

💡 Important: Choose a location you won't delete, such as Documents/crypto-web3-extension. The browser loads the extension from this folder — if you delete it, the extension stops working.
3

🔧 Open the Extensions Page ← Changes by browser

Open your browser and type chrome://extensions in the address bar, then press Enter.

💡 Tip: You can also access this via Menu (⋮) → Extensions → Manage Extensions.
4

🔓 Enable Developer Mode

Find the "Developer mode" toggle in the top-right corner of the extensions page and turn it ON.

This reveals additional options including "Load unpacked" which we'll use next.

Extensions page showing Developer mode toggle enabled
5

📦 Load the Extension

Click the "Load unpacked" button that appeared after enabling Developer Mode.

Navigate to and select the folder where you extracted the ZIP (the folder containing manifest.json).

6

📌 Pin the Extension

Click the puzzle piece icon 🧩 in your browser toolbar to see all extensions.

Find "Crypto Trading Journal - Web3 Auth" and click the pin icon to keep it visible in your toolbar for easy access.

Browser toolbar showing pinned CTJ extension
✓

🎉 You're All Set!

The extension is now installed and ready to use.

Visit cryptotradingjournal.xyz and click "Connect Wallet" to authenticate with your Web3 wallet.

💡 Note: Chrome may show a "Disable developer mode extensions" dialog on startup. Simply click Keep or close it — this is normal for manually loaded extensions.

Frequently Asked Questions

Solutions to common issues

Where can I install the extension?

The extension is available on the Chrome Web Store. Installing from CWS gives you automatic updates. Manual installation via ZIP is available as an alternative above.

"Wallet not detected" error

This extension is an authentication bridge — it requires an existing wallet extension like MetaMask to work. Make sure:

  • MetaMask (or similar) is installed and enabled
  • Your wallet is unlocked
  • You're on the correct network

Download MetaMask →

"Load unpacked" button not visible

The "Load unpacked" button only appears when Developer mode is enabled. Look for the toggle switch in the top-right corner of the extensions page and make sure it's turned ON.

Extension disappears after browser restart

This happens if you deleted or moved the extracted folder. The browser loads the extension directly from that folder location.

Solution: Re-extract the ZIP to a permanent location and load it again.

How do I update the extension?

Since this is a manual installation, updates aren't automatic. To update:

  1. Download the latest version from this page
  2. Extract it to the same folder (overwrite existing files)
  3. Go to chrome://extensions
  4. Click the refresh icon (🔄) on the extension card
Is this extension safe to use?

Yes. This extension:

  • Never accesses your private keys or seed phrase
  • Only requests signatures for authentication (like signing a message)
  • Is open source — you can review the code on GitHub
  • Only communicates with cryptotradingjournal.xyz
"Cannot redefine property: ethereum" console error

This is a known conflict that occurs when multiple wallet extensions try to inject their provider. It's harmless and doesn't affect functionality — the extension will still work correctly.