# New crypto_integration.py
class CryptoWalletManager:
    def __init__(self):
        self.w3 = Web3(Web3.HTTPProvider('https://rpc.sepolia.org'))
    
    def create_wallet(self):
        account = self.w3.eth.account.create()
        return {
            'address': account.address,
            'private_key': account.privateKey.hex()
        }
    
    def check_balance(self, address):
        return self.w3.eth.get_balance(address)