Technical Deep Dive: How Our Agents Execute Real Blockchain Transactions

class BlockchainExecutor:
    def __init__(self):
        self.w3 = Web3(Web3.HTTPProvider(RPC_URL))
        self.account = Account.from_key(PRIVATE_KEY)
        
    async def deploy_contract(self, bytecode: str, abi: dict):
        # Gas estimation with safety buffer
        gas_estimate = self.w3.eth.estimate_gas({
            'from': self.account.address,
            'data': bytecode
        })
        gas_price = await self.get_optimal_gas_price()
        
        # Build transaction
        tx = {
            'from': self.account.address,
            'gas': int(gas_estimate * 1.2),  # 20% buffer
            'gasPrice': gas_price,
            'data': bytecode,
            'nonce': self.w3.eth.get_transaction_count(self.account.address)
        }
        
        # Sign and send
        signed = self.account.sign_transaction(tx)
        tx_hash = self.w3.eth.send_raw_transaction(signed.rawTransaction)
        
        # Wait for confirmation with timeout
        receipt = await self.wait_for_confirmation(tx_hash)
        return receipt.contractAddress

class ResilientWeb3:
    def __init__(self):
        self.providers = [
            "https://bsc-dataseed.binance.org/",
            "https://bsc-dataseed1.defibit.io/",
            "https://bsc-dataseed1.ninicoin.io/"
        ]
        self.current = 0
    
    async def execute_with_retry(self, func, *args):
        for attempt in range(len(self.providers)):
            try:
                provider = self.providers[self.current]
                self.w3.provider = Web3.HTTPProvider(provider)
                return await func(*args)
            except Exception as e:
                log.warning(f"RPC {provider} failed: {e}")
                self.current = (self.current + 1) % len(self.providers)
                if attempt == len(self.providers) - 1:
                    raise

class GasOptimizer:
    def __init__(self):
        self.history = deque(maxlen=100)
        
    async def get_optimal_gas_price(self) -> int:
        # Get current network price
        base_price = self.w3.eth.gas_price
        
        # Check recent history
        recent_avg = sum(self.history) / len(self.history) if self.history else base_price
        
        # Time-based adjustments
        hour = datetime.now().hour
        if hour in [9, 10, 11]:  # Peak hours
            multiplier = 1.3
        elif hour in [2, 3, 4]:  # Low activity
            multiplier = 0.9
        else:
            multiplier = 1.0
            
        # Network congestion check
        pending_tx = self.w3.eth.get_block('pending')['transactions']
        if len(pending_tx) > 200:
            multiplier *= 1.2
            
        optimal = int(base_price * multiplier)
        self.history.append(optimal)
        return optimal

class SecurityLayer:
    def validate_transaction(self, tx: dict) -> bool:
        # Check value limits
        if tx.get('value', 0) > MAX_VALUE:
            raise SecurityError("Transaction value exceeds limit")
            
        # Verify addresses
        if not self.is_valid_address(tx['to']):
            raise SecurityError("Invalid recipient address")
            
        # Check known malicious contracts
        if self.is_blacklisted(tx['to']):
            raise SecurityError("Recipient is blacklisted")
            
        # Simulate transaction
        try:
            self.w3.eth.call(tx)
        except Exception as e:
            raise SecurityError(f"Transaction would fail: {e}")
            
        return True