Contract verification errors

# Contract Verification Errors

Verification errors usually occur due to compilation mismatches.

Common Causes

• Wrong compiler version  
• Optimization mismatch  
• Incorrect constructor arguments  
• Incorrect EVM version  
• Flattening errors  

How to Fix

1. Confirm compiler version used at deployment  
2. Match optimization settings exactly  
3. Encode constructor arguments properly  
4. Ensure correct pragma version