Welcome to BlockDAG Dashboard! 👋


Dev Release 51

June 12, 2024

Greetings BlockDAG Community,

Today has been buzzing with activity as we dive deep into the development of our x1 Miner application and blockchain explorer. While we eagerly await updates from the Apple Store regarding the application's availability, let's take a peek behind the curtains and explore the magic happening with our BlockDAG explorer.
You might be wondering, how exactly are we syncing the blockchain data with our explorer? Well, let me break it down for you in simple terms.Imagine our explorer as a super-smart detective constantly on the lookout for new clues (blocks and transactions) in the vast world of the BlockDAG blockchain. But how does it stay up-to-date with the latest happenings? That's where our sync service comes into play.
Think of the sync service as the explorer's trusty sidekick, tirelessly fetching and updating data from the blockchain network. But developing this sync service isn't just a walk in the park. We consider various factors to ensure it's as reliable and efficient as possible.
Firstly, we prioritize real-time updates. We want our explorer to be like a live newsfeed, delivering the latest updates straight to your fingertips. So, we implement cutting-edge protocols like WebSocket or HTTP/2 to ensure seamless real-time communication with the blockchain network.
But it's not just about speed; it's also about reliability. We know that blockchain reorganizations can sometimes throw a spanner in the works, so our sync service is equipped with clever algorithms to detect and handle these reorganizations gracefully. This ensures that our explorer maintains data consistency and accuracy at all times.

Enhancing BlockDAG Explorer with Blockchain Synchronization Service

Understanding Blockchain Data Structures:

  • Before diving into development, it's crucial to understand the underlying data structures of the BlockDAG blockchain. This includes familiarizing ourselves with block headers, transactions, and the relationships between blocks.

// Pseudo code to retrieve block headers

function getBlockHeaders() {

   const blockHeaders = blockchainClient.getBlockHeaders();

   return blockHeaders;



// Pseudo code to retrieve transactions of a block

function getTransactionsOfBlock(blockHash) {

   const transactions = blockchainClient.getTransactionsOfBlock(blockHash);

   return transactions;



// Pseudo code to establish relationships between blocks

function establishBlockRelationships(blocks) {

   for (let block of blocks) {

       if (block.previousBlockHash) {

           // Connect current block with its parent block            block.setParentBlock(getBlockByHash(block.previousBlockHash));





  1. getBlockHeaders() Function:
    1. This function is responsible for retrieving block headers from the blockchain.
    2. It utilizes the blockchainClient object to make a request to the blockchain and fetch the block headers.
    3. Once the headers are retrieved, they are stored in the blockHeaders variable.
    4. Finally, the function returns the retrieved block headers.
  2. getTransactionsOfBlock() Function:
    1. This function takes a blockHash parameter as input, representing the hash of the block whose transactions need to be retrieved.
    2. It utilizes the blockchainClient object to request transactions associated with the specified block hash from the blockchain.
    3. The retrieved transactions are stored in the transactions variable.
    4. Finally, the function returns the transactions of the specified block.
  3. establishBlockRelationships() Function:
    1. This function is responsible for establishing relationships between blocks.
    2. It takes a collection of blocks as input, representing the blocks whose relationships need to be established.
    3. The function iterates over each block in the collection.
    4. For each block, it checks if there is a previousBlockHash, indicating that the block has a parent block.
    5. If a previousBlockHash exists, the function retrieves the parent block using the getBlockByHash() function (not provided in the pseudo code).
    6. Finally, the function connects the current block with its parent block by setting the parent block reference.

Overall, these pseudo code snippets demonstrate the basic functionality of retrieving block headers and transactions from the blockchain, as well as establishing relationships between blocks based on their hash values.

  • Choosing the Right Protocol:
  • Selecting the appropriate protocol for communication with the blockchain network is essential. We opt for protocols like WebSocket or HTTP/2, which support real-time data updates and bidirectional communication.

// Pseudo code for selecting WebSocket protocol

function connectWebSocket() {

   const websocket = createWebSocketConnection("ws://blockdagnode:8546");

   return websocket;



// Pseudo code for selecting HTTP/2 protocol function connectHTTP2() {

   const http2Connection = createHTTP2Connection("https://blockdagnode:8545");

   return http2Connection;



connectWebSocket() Function:

  • This function is responsible for establishing a WebSocket connection to the BlockDAG node.
  • It uses the createWebSocketConnection() function to create a WebSocket connection.
  • The URL passed to createWebSocketConnection() (ws://blockdagnode:8546) specifies the WebSocket endpoint of the BlockDAG node, including the protocol (ws://), hostname (blockdagnode), and port number (8546).
  • Once the WebSocket connection is established, the function returns the WebSocket object (websocket), allowing further communication over the WebSocket protocol.

connectHTTP2() Function:

  • This function is responsible for establishing an HTTP/2 connection to the BlockDAG node.
  • It uses the createHTTP2Connection() function to create an HTTP/2 connection.
  • The URL passed to createHTTP2Connection() (https://blockdagnode:8545) specifies the HTTP/2 endpoint of the BlockDAG node, including the protocol (https://), hostname (blockdagnode), and port number (8545).
  • Once the HTTP/2 connection is established, the function returns the HTTP/2 connection object (http2Connection), allowing further communication over the HTTP/2 protocol.

Establishing Connection to the Blockchain Network:

  • The first step in developing our sync service is establishing a connection to the BlockDAG network. We utilize APIs provided by network nodes or implement node software directly to interact with the blockchain.

function connectToBlockchainNode() {

const blockchainNode = initializeBlockchainNode("blockdagnode");

return blockchainNode;


  • Handling Blockchain Reorganizations:

Blockchain reorganizations can occur when previously confirmed blocks are replaced by alternative chains. Our sync service detects and handles these reorganizations gracefully to ensure data consistency and accuracy.

// Pseudo code to handle blockchain reorganizations

function handleBlockchainReorg() {

   while (true) {

       const currentChain = blockchainClient.getCurrentChain();

       if (currentChain !== explorerDatabase.getChain()) {





  • Robust Error Handling:

Robust error handling mechanisms are integrated into our sync service to handle network disruptions, node failures, and other potential issues. Automatic retry mechanisms and fallback strategies ensure continuous synchronization.

// Pseudo code to handle sync errors

function handleSyncErrors() {

   while (true) {

       try {


       } catch (error) {






  • Testing and Optimization:
  • Throughout the development process, rigorous testing and optimization are conducted to ensure the reliability, scalability, and performance of our sync service. This includes stress testing under high loads and optimizing resource utilization.

By following these steps and leveraging advanced techniques, we're able to develop a robust blockchain synchronization service that forms the backbone of the BlockDAG Explorer.

Stay tuned!

So, while we eagerly anticipate the release of our x1 Miner application, rest assured that we're hard at work behind the scenes, fine-tuning our BlockDAG explorer to deliver the best possible experience for you, our amazing community.
Stay tuned for more updates, and as always, thank you for being part of the BlockDAG journey!

BlockDAG LogoBlockDAG Logo