In the dynamic landscape of blockchain technologies, RedStone X emerges as a fortress against front-running attacks through its ingenious implementation of deferred transaction execution.
Let's delve into the process of seamlessly integrating RedStone X, ensuring enhanced security and resilience against potential vulnerabilities.

The integration journey kicks off with a strategic refactoring of your smart contracts, particularly in the execution phases of price-sensitive transactions.

In this initial phase, the user takes the initiative by initiating the transaction. Crucially, this involves recording parameters without committing to the execution price. This decoupling sets the stage for a two-step transaction process.

function changeEthToUsdc() external payable {
        bytes32 requestHash = calculateHashForSwapRequest(
            msg.value,
            msg.sender,
            block.number
        );
        requestedSwaps[requestHash] = true;
        
        emit NewOracleDataRequest(msg.value, msg.sender, block.number);
    }

In the function above we:

1. Collect the collateral from the user keeping the eth that is attached to the transaction. This protects us from spamming the protocol with empty requests.

2. Notarize all the necessary parameters of the user's request that will be necessary to validate the execution step. In the context of our example, let's seal the values of:

• amount of funds to swap msg.value

• address of the caller msg.sender

• time when the transaction is submitted (it will be necessary to deliver a matching price) block.number (Keeping the timestamp as block number or hash is better because the on-chain timestamping may not be fully synchronized with the global clock posing a risk of malicious arbitrage).

We do not need to store all the data on-chain. It's sufficient to record a hash of the values mentioned above.

1. Notify the keepers' network about the new request to receive price data by emiting the NewOracleDataRequest event.

The actual execution of the transaction takes place in a separate transaction. Following the initial request, a call to execution is made, this time armed with the confirmed price. This segregation of phases serves as a key component in fortifying your smart contracts against potential front-running threats.

function executeWithOracleData(
    uint256 ethToSwap,
    address requestedBy,
    uint256 requestedAtBlock
    ) external payable {

    // Check if the request actually exists
    bytes32 requestHash =
      calculateHashForSwapRequest(avaxToSwap, requestedBy, requestedAtBlock);
    require(requestedSwaps[requestHash],
      "Can not find swap request with the given params");
    delete requestedSwaps[requestHash];

    // We need to validate the timestamp (block.number)
    uint256 dataPackagesBlockNumber = extractTimestampsAndAssertAllAreEqual();
    require(dataPackagesBlockNumber == requestedAtBlock, "Block number mismatch in payload and request");

    // Transfer USDC to the user
    uint256 usdcAmount = getExpectedUsdAmount(ethToSwap);
    usdc.transfer(requestedBy, usdcAmount);
}

1. We need to validate if the parameters provided by keepers match the ones notarized by the user.

2. Then we check if the timestamp (block number) for which the price is sourced matches the time when the request was recorded.

3. If all of the above checks are fine, we can send the appropriate value of usdc back to the user who originated the request

The second crucial step involves the deployment of a relayer bot. This automated sentinel plays a pivotal role in safeguarding your transactions against untoward interference.

• The bot diligently monitors the blockchain for Phase 1 requests.

• Upon detection, it promptly fetches the latest price from the oracles, validating the data with precision.

• Subsequently, the relayer bot executes the necessary transactions, completing the second phase with a fortified defense against front-running vulnerabilities.

A Decentralized Oracle Network Integral to the integration process is the seamless incorporation of RedStone's decentralized oracle network. This ensures a constant and reliable stream of price and market data delivery.

• Reliability: RedStone's decentralized oracle network ensures the consistency and reliability of the data fed into your smart contracts.

• Market Data: Leverage RedStone's comprehensive market data, empowering your transactions with the latest and most accurate information.

By combining the strategic refactoring of smart contracts, the deployment of a vigilant relayer bot, and the incorporation of RedStone's decentralized oracle network, you create an impregnable defense against front-running attacks.

For those eager to explore the intricacies of this integration firsthand, the full code for the example discussed above is readily available. Head over to the workshop, where a comprehensive guide elucidates the process using RedStone's three distinct models. The official RedStone GitHub repository stands as a testament to transparency and accessibility in the realm of blockchain integration.

In conclusion, the integration of RedStone X not only fortifies your smart contracts against front-running vulnerabilities but also opens doors to a new paradigm of security and reliability in the ever-evolving blockchain landscape. Dive into the code, embrace the innovation, and fortify your blockchain endeavors with the resilience of RedStone.

In the dynamic landscape of blockchain technologies, RedStone X emerges as a fortress against front-running attacks through its ingenious implementation of deferred transaction execution.
Let's delve into the process of seamlessly integrating RedStone X, ensuring enhanced security and resilience against potential vulnerabilities.

The integration journey kicks off with a strategic refactoring of your smart contracts, particularly in the execution phases of price-sensitive transactions.

In this initial phase, the user takes the initiative by initiating the transaction. Crucially, this involves recording parameters without committing to the execution price. This decoupling sets the stage for a two-step transaction process.

function changeEthToUsdc() external payable {
        bytes32 requestHash = calculateHashForSwapRequest(
            msg.value,
            msg.sender,
            block.number
        );
        requestedSwaps[requestHash] = true;
        
        emit NewOracleDataRequest(msg.value, msg.sender, block.number);
    }

In the function above we:

1. Collect the collateral from the user keeping the eth that is attached to the transaction. This protects us from spamming the protocol with empty requests.

2. Notarize all the necessary parameters of the user's request that will be necessary to validate the execution step. In the context of our example, let's seal the values of:

• amount of funds to swap msg.value

• address of the caller msg.sender

• time when the transaction is submitted (it will be necessary to deliver a matching price) block.number (Keeping the timestamp as block number or hash is better because the on-chain timestamping may not be fully synchronized with the global clock posing a risk of malicious arbitrage).

We do not need to store all the data on-chain. It's sufficient to record a hash of the values mentioned above.

1. Notify the keepers' network about the new request to receive price data by emiting the NewOracleDataRequest event.

The actual execution of the transaction takes place in a separate transaction. Following the initial request, a call to execution is made, this time armed with the confirmed price. This segregation of phases serves as a key component in fortifying your smart contracts against potential front-running threats.

function executeWithOracleData(
    uint256 ethToSwap,
    address requestedBy,
    uint256 requestedAtBlock
    ) external payable {

    // Check if the request actually exists
    bytes32 requestHash =
      calculateHashForSwapRequest(avaxToSwap, requestedBy, requestedAtBlock);
    require(requestedSwaps[requestHash],
      "Can not find swap request with the given params");
    delete requestedSwaps[requestHash];

    // We need to validate the timestamp (block.number)
    uint256 dataPackagesBlockNumber = extractTimestampsAndAssertAllAreEqual();
    require(dataPackagesBlockNumber == requestedAtBlock, "Block number mismatch in payload and request");

    // Transfer USDC to the user
    uint256 usdcAmount = getExpectedUsdAmount(ethToSwap);
    usdc.transfer(requestedBy, usdcAmount);
}

1. We need to validate if the parameters provided by keepers match the ones notarized by the user.

2. Then we check if the timestamp (block number) for which the price is sourced matches the time when the request was recorded.

3. If all of the above checks are fine, we can send the appropriate value of usdc back to the user who originated the request

The second crucial step involves the deployment of a relayer bot. This automated sentinel plays a pivotal role in safeguarding your transactions against untoward interference.

• The bot diligently monitors the blockchain for Phase 1 requests.

• Upon detection, it promptly fetches the latest price from the oracles, validating the data with precision.

• Subsequently, the relayer bot executes the necessary transactions, completing the second phase with a fortified defense against front-running vulnerabilities.

A Decentralized Oracle Network Integral to the integration process is the seamless incorporation of RedStone's decentralized oracle network. This ensures a constant and reliable stream of price and market data delivery.

• Reliability: RedStone's decentralized oracle network ensures the consistency and reliability of the data fed into your smart contracts.

• Market Data: Leverage RedStone's comprehensive market data, empowering your transactions with the latest and most accurate information.

By combining the strategic refactoring of smart contracts, the deployment of a vigilant relayer bot, and the incorporation of RedStone's decentralized oracle network, you create an impregnable defense against front-running attacks.

For those eager to explore the intricacies of this integration firsthand, the full code for the example discussed above is readily available. Head over to the workshop, where a comprehensive guide elucidates the process using RedStone's three distinct models. The official RedStone GitHub repository stands as a testament to transparency and accessibility in the realm of blockchain integration.

In conclusion, the integration of RedStone X not only fortifies your smart contracts against front-running vulnerabilities but also opens doors to a new paradigm of security and reliability in the ever-evolving blockchain landscape. Dive into the code, embrace the innovation, and fortify your blockchain endeavors with the resilience of RedStone.