# 🛠 How to Migrate COIM (Old) → COIMx (New)

*A Step-by-Step Guide to Seamlessly Swap Your Old COIM Tokens for COIMx*

By [CoinMath](https://paragraph.com/@coinmath) · 2025-03-13

coimx, coinmath, migration

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### 📌 **New COIMx Token Address:**

📌 [View on BaseScan](https://basescan.org/token/0xb3fdca9149ceb33631b4803aec889515cbcaa2be)  
`0xb3fdca9149ceb33631b4803aec889515cbcaa2be`

### 📌 **Old COIM Token Address:**

`0xD2237D9fE0c36721220e4bD88aa85b55ffDA0E84`

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🔄 **Migration Process (With 3% Fee Deduction)**
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🚨 **Important:** During migration, a **3% transaction fee** will be applied. This means:

*   **1% will be burned** 🔥 (deflationary)
    
*   **1% will go to the marketing wallet** 🎯
    
*   **1% will be added to liquidity** 💧
    

💡 **Users must approve and migrate the exact amount they want to swap. The contract will automatically deduct the 3% fee from the migrated amount.**

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### ✅ **Step 1: Approve Old COIM Tokens**

1⃣ **Go to the Old COIM contract** → [Click Here](https://basescan.org/address/0xD2237D9fE0c36721220e4bD88aa85b55ffDA0e84#writeContract)  
2⃣ Click **"Write Contract"** → **Connect Wallet**  
3⃣ Find `approve(spender, amount)`

![](https://storage.googleapis.com/papyrus_images/ef7748c0b06d43693ff4aff15459cdf8.png)

*   **Spender:** `0xb3fdca9149ceb33631b4803aec889515cbcaa2be` (New COIMx contract)
    
*   **Amount:** _(How much you want to migrate, with 8 decimals)_
    
*   Example:
    
    *   If you want to migrate **100 COIM**, approve **100 COIM** (`10000000000` units in 8 decimals).
        
    *   If you want to migrate **50 COIM**, approve **50 COIM** (`5000000000` units in 8 decimals). 4⃣ Click **"Write"** and confirm in MetaMask.
        

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### ✅ **Step 2: Migrate to COIMx**

1⃣ **Go to the New COIMx contract** → [Click Here](https://basescan.org/address/0xb3fdca9149ceb33631b4803aec889515cbcaa2be#writeContract)  
2⃣ Click **"Write Contract"** → **Connect Wallet**  
3⃣ Find `migrateOldTokens(amount)`

![](https://storage.googleapis.com/papyrus_images/a47d4909ed81d2d66844cefebdd7df61.png)

*   **Amount:** _(Enter the exact amount you approved in Step 1)_
    
*   🚨 **The 3% fee will be deducted automatically by the contract.**
    
*   Example:
    
    *   If you migrate **100 COIM**, you will receive **97 COIMx**.
        
    *   If you migrate **50 COIM**, you will receive **48.5 COIMx**. 4⃣ Click **"Write"**, confirm in MetaMask.
        

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### 🎉 **You're Done!**

✅ You will receive **COIMx tokens 1:1 minus the 3% fee**.  
✅ Your new balance will reflect in your wallet after the transaction is confirmed.

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### 📌 **Final Notes:**

*   ✅ **Users must use the new COIMx contract only!**
    
*   ✅ Old COIM is only for migration; it won't be used afterward.
    
*   ✅ If users don't see COIMx in their wallet, they should **manually add the new COIMx contract in MetaMask**.
    
*   ✅ The **3% fee is automatically deducted from every migration transaction—users do NOT need to adjust the amount manually.**

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*Originally published on [CoinMath](https://paragraph.com/@coinmath/how-to-migrate-coimx)*