# Etherscan Verification - FIXED Settings

**Error**: "Unable to find matching Contract Bytecode and ABI"  
**Solution**: Use **Via IR: YES**

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## ✅ CORRECT Verification Settings

### Form Fields

| Field | Value |
|-------|-------|
| **Contract Address** | `0x89dd12025bfcd38a168455a44b400e913ed33be2` |
| **Compiler Type** | `SINGLE FILE / CONCATENATED METHOD` |
| **Compiler Version** | `v0.8.20+commit.a1b79de6` |
| **License** | `MIT License (MIT)` |
| **Optimization** | `Yes` (200 runs) |
| **Via IR** | ✅ **YES** ← **CRITICAL!** |

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## 🔑 Key Fix

**The contract was deployed with `--via-ir` flag**, so verification **MUST** also use **Via IR: YES**.

The bytecode mismatch occurred because:
- ❌ Verification attempted with: Via IR: **No**
- ✅ Deployment used: Via IR: **Yes**

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## 📝 Constructor Arguments

**ABI-Encoded**:
```
0x00000000000000000000000080226fc0ee2b096224eeac085bb9a8cba1146f7d000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2000000000000000000000000514910771af9ca656af840dff83e8264ecf986ca
```

**Decoded**:
1. `_ccipRouter`: `0x80226fc0Ee2b096224EeAc085Bb9a8cba1146f7D`
2. `_weth9`: `0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2`
3. `_feeToken`: `0x514910771AF9Ca656af840dff83E8264EcF986CA`

---

## 📄 Contract Source Code

**File**: `docs/CCIPWETH9Bridge_flattened.sol`  
**Lines**: 396 lines  
**Ready to paste**: Yes

Copy the entire contents and paste into Etherscan's "Enter the Solidity Contract Code below" field.

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## 🎯 Step-by-Step Instructions

1. **Go to Etherscan**:
   - https://etherscan.io/address/0x89dd12025bfcd38a168455a44b400e913ed33be2#code
   - Click **"Contract"** tab → **"Verify and Publish"**

2. **Fill in the form**:
   - Contract Address: `0x89dd12025bfcd38a168455a44b400e913ed33be2`
   - Compiler Type: `SINGLE FILE / CONCATENATED METHOD`
   - Compiler Version: `v0.8.20+commit.a1b79de6`
   - License: `MIT License (MIT)`
   - Optimization: `Yes` (200 runs)
   - **Via IR: ✅ YES** ← **This is the fix!**

3. **Paste Contract Code**:
   - Copy from `docs/CCIPWETH9Bridge_flattened.sol`
   - Paste into the code field

4. **Enter Constructor Arguments**:
   - Paste the ABI-encoded constructor arguments above

5. **Submit**:
   - Click **"Verify and Publish"**
   - Wait for verification (up to 45 seconds)

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## ✅ Expected Result

With **Via IR: YES**, the bytecode should match and verification should succeed.

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## 📚 Reference

- **Deployment Script**: Used `--via-ir` flag (confirmed)
- **Documentation**: `docs/ETHERSCAN_BYTECODE_MISMATCH_FIX.md`
- **Flattened Contract**: `docs/CCIPWETH9Bridge_flattened.sol`

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**Last Updated**: $(date)  
**Status**: ✅ **FIXED - USE VIA IR: YES**