# User Guide
## Mint to Earn Overview
Through the zkPass protocol, users can verify their off-chain platform data (e.g., social accounts, travel, business trips) to generate a zero-knowledge proof credential (zk-VC), which is then stored on-chain.\
This credential serves as a verifiable credit carrier, helping users build decentralized credit profiles.\
When verification is successful and meets the rules, users can earn token rewards — this is Mint to Earn.
## Verification Flow & Rules
#### 1. Data Verification & Credential Generation
* Users choose the data source to be verified (e.g., Twitter follow @PolyFlow).
* zkPass uses zkTLS technology to directly access HTTPS data sources and generate a zero-knowledge proof confirming data authenticity.
* The credential only includes verification results (e.g., Twitter Follower Count) rather than raw data. Raw data never leaves the user’s device, ensuring full privacy protection.
#### 2. On-Chain Storage & Reward Trigger
* Credentials are stored on-chain via smart contracts as publicly verifiable records, while rewards are distributed automatically.
* Uniqueness constraint: the same data source (e.g., Twitter Blue Badge) can only be uploaded once. Duplicate attempts are blocked.
#### 3. Validity & Renewal Mechanism
* On-chain credentials have a 2-year validity period ⏳. After expiration, re-verification is required to update credit records and maintain data accuracy.
* If verification fails or conditions are not met, users can re-submit unlimited times until successful.
## Using the zkPass Plugin
### **1. PC (Highly Recommended)**
Recommended setup:
* Browser: Latest Google Chrome or Brave
**Instructions:**
* Option 1: Install **TransGate** from the official Google Chrome Web Store.\
\&#xNAN;**⚠️ Important:**\
Do not install TransGate extensions from third-party sources. Always use official links to protect your accounts.
* Grant permissions for pop-ups and cross-site cookies (disabling may block the verification process).
* Log in to the data source normally. zkPass will run in-browser; do not close the tab during verification.
**Note:**\
Ad blockers or privacy extensions may interfere with wallet communication. If issues occur, temporarily disable them.
**Important Note:** Since mobile service may be unstable, we recommend using the Google extension on PC for the best experience!
### **2. 📱 iOS (iPhone)**
* App Clip access — no installation required.\
zkPass SDK fully supports Apple’s App Clip experience, delivering a seamless and secure verification process.
**How to use:**
* Open the zkPass-integrated dApp link in Safari or scan the QR code.
* An App Clip card will appear — tap Open to start verification.
* Complete wallet connection and data verification inside the App Clip.
* Return to the main dApp after finishing. No persistent app or background service is kept.
**Requirements:**
* iOS 14.3 or above
* Safari or Camera (for QR scanning)
* App Clips enabled in Settings → App Clips
**Note:**
* Wallet connection is handled in-session (MetaMask or WalletConnect).
All processes are sandboxed under Apple’s App Clip privacy rules.
### 3. 📱 Android Devices
**Requirement:** Install the official TransGate app from Google Play.
* zkPass SDK runs via the native TransGate client to ensure secure proof generation.
✅ **Recommended setup:** Chrome Browser + MetaMask Mobile App
* Open the dApp link in Chrome or other Chromium-based browsers.
* When prompted, connect your wallet with MetaMask or WalletConnect.
* Approve requests in MetaMask and return to the browser tab to complete verification.
⚠️ Note on MetaMask in-app browser (Android):
* Due to system limitations, it does not fully support dApp redirects or advanced authentication.
* For best stability, use a standalone browser.
**Compatibility:**
* TransGate Android app supports Android 12+.
* For incompatible devices, use Mise Browser + TransGate Extension:
* Download Mise browser:[ https://mise.xyz](https://mise.xyz/)
* Open Chrome Web Store → Add TransGate extension in Mise
* After installation, TransGate icon will appear in the top-right. Open any zkPass-supported page to begin.
***
## Verified Platforms, Data, & Rewards
Full list of supported verifications and reward mappings:
## Mint to Earn Rewards
### **Rewards include:**
* PolyFlow Points
* Roam eSIM mobile data
* UMY discount vouchers
1. **Roam — a partner providing global eSIM services:**\
Roam eSIM redemption available directly\
Download the Roam app and activate instantly
2. **UMY Discount Voucher Redemption**
* UMY (Umy.com) is a leading global Web3 travel & lifestyle platform for crypto holders, digital nomads, and Web3 users.
* By leveraging blockchain, UMY addresses traditional travel pain points like high costs, weak privacy, and complicated cross-border payments.
* Mint to Earn users can redeem UMY vouchers for discounts on travel and services.
**Tips:**
1. The redemption validity period for Roam eSIM data vouchers is until September 10, 2026. Availability is limited to a total of 2,000GB, offered on a first-come, first-served basis. Once all vouchers are claimed, no further eSIM rewards will be issued.
2. UMY Reward Validity: UMY code vouchers must be redeemed by November 21.
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