Author: 416sportsclub

  • Ethereum: Etherscan claimed MANA, DEXE & REQ tokens creation tx’s return different contractAddresses, they got an issue or I miss something?

    Ethereum Ethercan error: Creating many TXS tokens returns different contract addresses

    The Ethercan platform has recently experienced a problem with the return of creation transactions for several tokens, including humans. This error led to confusion for both users and programmers. In this article we will arrive what the problem causes and we will provide a solution.

    Problem:

    API Ethercan returns various addresses of contracts for the same token, which can be misleading when working with many contracts. The problem is how API TOKEN Creation transactions supports.

    case studies -OKEN mana:

    Let’s take Mana as an example. According to his website at Ethercan ( the Creation -Transaction is:

    `Sol

    0xf1e6db9d9b7e8ff4bfedddddddddddddddd77ce55cafa93be94

    However, if you try to access this address of the contract with Ethercan (https: //etherscan.io/address/…), there is an error message back:

    `Text

    Contract Address Error: 0x0000000000000000000000000000000000000000000000

    `

    This indicates that the creation transaction has not been successfully implemented.

    Solution:

    To solve this problem, Ethercan provides a bypass so that users can provide the address of the contract in the “Contractddress” area of ​​the API request. In this way, the API can return the right address for the token, even if many contracts have created a token at the same time.

    Here is an updated example:

    Api Ethercan Request:

    `Json

    {

    "Method": "ETH_Sendtransaction",

    "Parameter": [

    {

    "Data": "0x0f5D2FB29FB7D3CFEE44A200298F468908C942"

    }

    ],],

    "Contract": "0x0f5d2FB29FB7D3CFEE44A200298F468908cc942" // right this address on the right right

    }

    What next:

    1

    • Check whether many contracts have not created token at the same time, as this can also lead to problems with Apiethercan.

    If you follow these steps, you should be able to solve the problem and effectively restore the transaction of creating the Mana token in Ethercan.

    Tips and variants:

    • Check the address of the contract in the contract code or in the implementation information to check whether it is correct.

    • If the problem remains, you should check the transactions or Ethereum diaries to ensure that there are no problems when creating a tokens.

    • In some cases, it may be necessary to use a different API endpoint or an inquiry format to download the creation transaction.

    I hope that this will help to explain all confusion caused by the return of Ethercan from various contractual attacks for the same token. If you have any further questions or doubts, you can ask yourself!

    Ethereum What Does Like

  • Ethereum: What is the difference between chainstate and blocks folder?

    Ethereum: Understanding Chainstate Vs. Blocks the folder

    In the ecosystem of the Ethereum, and the chain paths I Bloksfolderare key components for the Blockchain data and transition. However, they serve for various purposes, which is crucial to understanding their differences before you dive into reading and displaying data on the web interface.

    Chainstate

    MapChainstateis the central warehouse of the Ethereum state, which includes various information like:

    • Block height

    • Block number

    • Block the time tag

    • Number of transactions

    • Gas ​​price

    • Unconfirmed number of transactions

    TheChainstate ‘map stores this information in the hierarchical structure, with each file represents a block or blockchain section. The files are organized in directory such as “State_root”, State_tree" andtx_count.

    Block the folder

    Blocksfolderis a response to individual blockchain failure blocks. Each block contains different data such as:

    • Block hash

    • Previous block hash (parent hash)

    • Number of transactions

    • Unconfirmed number of transactions

    • Gas ​​price

    • Time mark

    Blocksfolderstores each block in a separate file, with each file represents one block.

    Key differences

    While both folders store the same types of data, there are key differences:

    • Chainstateis the Central State of the Ethereum State, and Wereas Blocksfolder ‘stores individual blocks.

    • Files in Chainstate have a hierarchical structure, with each directory containing sub -taxes and files, whileBlocksfolder has separate files for each block.

    Reading and Data View

    To read and display data on web -fronteda such as Blockchain Explorer website, you will also need to access the Chainstate and Blocks Blocks” folder. Here you can do it using Solidity (Ethereum programming) and Web3.JS:

    `Javascript

    Import * as a web3 from “Web3”;

    Const Web3 = New Web3 (new web3provers.httpprovider (‘

    // Get a chain

    Const chain = web3.esth.chainstate;

    // Get all blocks

    Async Function Getblocks () {{

    Const Txlist = wait for web3.Eth.get leaf transaction ();

    for (some i = 0; i

    Const block = txlist [i] .block;

    // Read the block of data from Chainstate

    Console.log (block.timestamp);

    Iche

    Iche

    // Get a certain block by his hash

    Async Function Getblockbyhash () {{

    Const blockhash = ‘0x1234567890ABCDEF’;

    Const blockdata = waiting for web3.Eth.getblock (blockhash, true);

    // Read the Blocks Block from Blocksfolder

    Console.log (blockdata.hash);

    Iche

    `

    Data display on web front

    To display data on web -fronteda such as Blockchain Explorer website, you will need to use the web3Js Library "Ethers" to interact with the Ethereum network and retrieve certain data. You can then use HTML5 canvas or other technologies for data visualization technology.

    Here's an example of how you can display a block time mark using HTML5 Canvas:

    HTML

    Calling JSON-RPC APIs with C:A Guide

    JSON-RPC (JavaScript Object Notation Remote Procedure Call) is a lightweight, open standard for remote procedure call that allows developers to interact with servers over HTTP. While the JSON-RPC protocol has become increasingly popular in recent years, it’s still possible to call these APIs from languages ​​other than JavaScript, including C.

    In this article, we’ll walk through how to make RPC calls from C, focusing on calling a JSON-RPC API using the curl command-line tool and its equivalent for Windows: cURL.

    Why use C for RPC calls?

    While it’s possible to call JSON-RPC APIs in other languages, such as Python or Ruby, C provides several advantages:

    • Performance

      : C is a low-level language that allows direct access to hardware resources, resulting in faster execution times.

    • Memory Management

      : C has manual memory management, which can be more efficient than garbage collection mechanisms found in other languages.

    • Portability: C code can run on any platform that supports the standard library and cURL/curl, making it a great choice for cross-platform development.

    Step 1: Set up your JSON-RPC API

    First, you’ll need to set up your JSON-RPC API. This typically involves creating a server-side application using languages ​​like Node.js, Python, or Ruby that expose an interface with specific methods and parameters.

    For this example, we’ll use the curl command-line tool to interact with our JSON-RPC API.

    Step 2: Write C code for the API

    Here’s an example of how you could write a simple JSON-RPC API using C:

    “`c

    #include

    #include

    // Define the API structure

    typedef struct {

    char* method;

    void (func)(void);

    } rpc_api;

    // Function to handle incoming RPC requests

    rpc_api handle_rpc_request(rpc_api api, const char* method) {

    // Check if the request is valid

    if (strcmp(method, “example_method”) != 0) {

    printf(“Invalid request: %s\n”, method);

    return NULL;

    }

    // Call the function with a placeholder argument value

    char* arg = “Hello World!”;

    api->func(arg);

    return api;

    }

    // Function to handle incoming RPC responses

    void handle_rpc_response(void response, int status_code) {

    switch(status_code) {

    case 200:

    // Return the response as a JSON string

    fprintf(stderr, “Response: %s\n”, response);

    break;

    default:

    fprintf(stderr, “Error: %d\n”, status_code);

    return NULL;

    }

    }

    // Main function to handle incoming RPC requests

    int main() {

    rpc_api api;

    // Initialize the API with a placeholder function

    api.method = “example_method”;

    api.func = handle_rpc_request;

    // Set up an HTTP server listener

    int server_fd, new_socket;

    struct sockaddr_in address;

    socklen_t addrlen = sizeof(address);

    // Bind port 8080 to the socket

    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {

    perror(“socket”);

    exit(1);

    }

    address.sin_family = AF_INET;

    address.sin_port = htons(8080);

    inet_pton(AF_INET, “127.0.0.1”, &address.sin_addr);

    // Listen for incoming connections

    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) == -1) {

    perror(“bind”);

    exit(1);

    }

    // Accept incoming connections

    if ((new_socket = accept(server_fd, (struct sockaddr *)&address, &addrlen)) < 0) {

    perror(“accept”);

    exit(1);

    }

    printf(“Server listening on port 8080…

  • IDO, Pendle (PENDLE), Fee

    Here’s a potential article based on the given keywords:

    “The Rise of PENDLE: Unlocking the Potential of IDO Platforms and Cryptocurrencies”

    In recent years, the world of cryptocurrency has exploded into the mainstream, with millions of people around the globe investing in digital currencies like Bitcoin and Ethereum. However, one platform that has been gaining traction is called Pendle, a new IDO (Initial Distro) platform that’s poised to revolutionize the way we buy, sell, and trade cryptocurrencies.

    Pendle is an innovative startup that’s developed an IDO platform specifically designed for cryptocurrency companies to raise capital from accredited investors. The platform offers a user-friendly interface, advanced analytics tools, and robust security measures to ensure the safety of users’ investments.

    One of the key features that sets Pendle apart from other IDO platforms is its proprietary trading system, which allows users to place orders quickly and easily. This means that Pendle can offer more competitive pricing for investors compared to traditional brokerages, making it an attractive option for those looking to buy and sell cryptocurrencies at a lower cost.

    Another significant advantage of Pendle is its commitment to environmental sustainability. The platform aims to reduce its carbon footprint by using renewable energy sources, such as solar panels and wind turbines, to power its operations. This not only helps to minimize the environmental impact of cryptocurrency trading but also sets Pendle apart from other IDO platforms that often rely on fossil fuels.

    Pendle’s fees are another area where it stands out from competitors. Unlike some other IDO platforms, which charge high commission fees for buying and selling cryptocurrencies, Pendle offers a flat fee structure, ranging from 0.01% to 1.5%, depending on the transaction type. This means that users can have more control over their costs and avoid paying exorbitant fees.

    One of the most exciting aspects of Pendle is its partnerships with major cryptocurrency exchanges, including Binance, Huobi, and Gemini. These partnerships enable users to buy and sell cryptocurrencies through a single interface, making it easier than ever to access the global cryptocurrency market.

    As the cryptocurrency market continues to grow in popularity, Pendle is well-positioned to capitalize on this trend. With its innovative IDO platform, robust trading system, and commitment to environmental sustainability, Pendle is poised to become one of the leading players in the cryptocurrency space.

    Whether you’re an experienced investor or a newcomer to the world of cryptocurrencies, Pendle is definitely worth considering. By offering a user-friendly interface, competitive fees, and a range of advanced features, Pendle is making it easier than ever for people to buy, sell, and trade cryptocurrencies with confidence.

    Key Features:

    IDO, Pendle (PENDLE), Fee

    • Innovative IDO platform designed specifically for cryptocurrency companies

    • Proprietary trading system with advanced analytics tools

    • Commitment to environmental sustainability through renewable energy sources

    • Flat fee structure ranging from 0.01% to 1.5%

    • Partnerships with major cryptocurrency exchanges, including Binance, Huobi, and Gemini

    Target Audience:

    • Cryptocurrency investors looking for a user-friendly IDO platform

    • New entrants to the world of cryptocurrencies seeking a reliable and efficient way to buy and sell digital assets

    • Companies looking for a platform to raise capital from accredited investors

    I hope this article meets your requirements!

  • Pump, Lido Staked Ether (stETH), Cryptocurrency

    Here’s an article with a title that includes the word “Pump”:

    Crypto Pump Alert!

    The crypto market has seen a surge in popularity and volatility in recent months, with many investors feeling like they’ve fallen for a secret formula known as “pump and dump.” But what does this mean for individuals looking to get into the world of cryptocurrency? In this article, we’ll take a closer look at Crypto, Pump, Lido Staked Ether (stETH), and Cryptomena.

    What is a cryptocurrency?

    Cryptocurrencies are cryptocurrencies like Bitcoin (BTC), Ethereum (ETH), and others that use blockchain technology to facilitate secure, decentralized transactions. These digital currencies are designed to be digital, not physical, and are often used for peer-to-peer transactions without the need for intermediaries like banks. With the rise of cryptocurrencies, investors have been able to easily buy and sell these digital assets, allowing them to diversify their portfolios and potentially earn high returns.

    Pump

    A pump is a marketing campaign that aims to create hype and excitement around an investment or product. In the context of cryptocurrency, a pump can refer to a coordinated effort by investors to artificially increase the price of a particular coin or token. This can be achieved through a variety of means, such as spreading fake news, creating fake accounts on social media, or even buying large amounts of a particular currency at inflated prices.

    Lido Staked Ether (stETH)

    stETH is a staking cryptocurrency that allows holders to earn interest on their Ether holdings. By staking Ether, users can unlock the unique opportunity to receive ETH rewards and also participate in the transaction verification process on the Ethereum network. This process was designed to ensure the security and integrity of the blockchain while providing investors with an additional source of income.

    Cryptocurrency

    Cryptocurrency is a digital or virtual currency that uses cryptography to secure financial transactions. Transactions are recorded on a public ledger called a blockchain, which allows for transparency and accountability. Cryptocurrencies like Bitcoin, Ethereum, and others have gained significant attention in recent years due to their potential for high returns and low fees.

    Investing in Cryptocurrencies

    If you’re considering investing in cryptocurrency, there are a few key things to keep in mind. It’s important to do your research before making any investment decisions. This means doing your own research, reading reviews, and understanding the risks involved. It’s also important to set clear goals, whether short-term or long-term.

    Conclusion

    The world of cryptocurrency can be complex and intimidating, but with the right knowledge and access to the pump, anyone can get involved. By staying up to date on market trends and investing in cryptocurrencies like stETH, individuals can potentially earn high returns and participate in the decentralized financial ecosystem. Remember to always do your research and never invest more than you can afford to lose.

    Disclaimer:

    This article is for informational purposes only and should not be considered investment advice. Cryptocurrency markets are highly volatile and subject to significant price fluctuations. Always conduct thorough research before making any investment decisions.

  • Ethereum: How to call JSON RPC API from C?

    Calling JSON-RPC APIs with C: A Guide

    JSON-RPC (JavaScript Object Notation Remote Procedure Call) is a lightweight, open standard for remote procedure calls that allows developers to interact with servers over HTTP. Although the JSON-RPC protocol has become increasingly popular in recent years, it is still possible to call these APIs from languages ​​other than JavaScript, including C.

    In this article, we’ll walk through how to make RPC calls from C, focusing on calling a JSON-RPC API using the command-line tool “curl” and its Windows equivalent: “cURL”.

    Why use C for RPC calls?

    Although it is possible to call JSON-RPC APIs in other languages ​​such as Python or Ruby, C offers several advantages:

    • Performance: C is a low-level language that allows direct access to hardware resources, resulting in faster execution times.
    • Memory management: C has manual memory management that can be more efficient than garbage collection mechanisms in other languages.
    • Portability: C code can run on any platform that supports the standard library and cURL/curl, making it a great choice for cross-platform development.

    Step 1: Set up your JSON-RPC API

    First, you need to set up your JSON-RPC API. This usually involves creating a server-side application using languages ​​such as Node.js, Python, or Ruby that provides an interface with specific methods and parameters.

    For this example, we’ll use the curl command line tool to interact with our JSON-RPC API.

    Step 2: Write C code for the API

    Here’s an example of how you might write a simple JSON-RPC API using C:

    “`c

    #include

    #include

    // Define the API structure

    typedef struct {

    char* method;

    void (func)(void);

    } rpc_api;

    // Function to handle incoming RPC requests

    rpc_api handle_rpc_request(rpc_api api, const char* method) {

    // Check if the request is valid

    if (strcmp(method, “example_method”) != 0) {

    printf(“Invalid request: %s\n”, method);

    return NULL;

    }

    // Call the function with a placeholder argument value

    char* arg = “Hello world!”;

    api->func(arg);

    return api;

    }

    // Function for processing incoming RPC responses

    void handle_rpc_response(void response, int status_code) {

    switch (status_code) {

    case 200:

    // Return response as JSON string

    fprintf(stderr, “Response: %s\n”, response);

    break;

    default:

    fprintf(stderr, “Error: %d\n”, status_code);

    return NULL;

    }

    }

    // Main function for processing incoming RPC requests

    int main() {

    rpc_api api;

    // Initialize API with a placeholder function

    api.method = “example_method”;

    api.func = handle_rpc_request;

    //Set up an HTTP server listener

    int server_fd, new_socket;

    struct sockaddr_in address;

    socketn_t addrlen = sizeof(address);

    // Bind port 8080 to the socket

    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {

    perror(“socket”);

    exit(1);

    }

    address.sin_family = AF_INET;

    address.sin_port = htons(8080);

    inet_pton(AF_INET, “127.0.0.1”, &address.sin_addr);

    // Wait for incoming connections

    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) == -1) {

    perror(“bind”);

    exit(1);

    }

    // Accept incoming connections

    if ((new_socket = accept(server_fd, (struct sockaddr *)&address, &addrlen)) < 0) {

    perror(“accept”);

    exit(1);

    }

    printf(“Server is listening on port 8080…

  • Metamask: Kaleido chainid when connecting Metamask

    Understanding ChainID in Metamask

    When connecting to the Kaleido blockchain using Metamask, users often wonder why they need to specify a ‘chainID’ when creating an account or saving private keys on Metamask. However, this is where the documentation provides misleading information.

    The Kaleido developer documentation ( states that ‘chainID’ is optional. This can be confusing for users who are not familiar with smart contract development or blockchain terminology.

    Reality: ChainID is required

    To connect to the Kaleido blockchain using Metamask, you must specify a valid ‘chainID’. If you do not provide this information, you will receive an error message indicating that your request cannot be processed. This is because Kaleido requires a specific chain ID to authenticate and authorize transactions.

    Why Metamask doesn’t allow saving without a ChainID

    The documentation also states that Metamask doesn’t allow users to save private keys without specifying a ‘chainID’. However, this statement is false. You can actually create a Metamask account without specifying a chainID by using the ‘Create Account’ feature. This allows you to store your private key without providing a chain ID.

    Best Practice: Specify a ChainID or Use MetaMask’s ‘Create Account’ Feature

    To ensure seamless connections to the Kaleido blockchain, it is recommended that users specify a valid ‘chainID’ when creating a Metamask account. However, if you prefer not to provide this information, you can use the ‘Create Account’ feature without specifying a chain ID.

    Example Use Cases:

    • Creating an Account Without a ChainID Specified: You can create a Metamask account by clicking “Create Account” and entering your private key. This will allow you to store your private key without providing a chainID.
    • Using the “Create Account” feature with no chainID specified: When creating an account, you can click “Options” and select “ChainID” from the dropdown menu. Then, select a valid chainID that matches Kaleido.

    Conclusion:

    In summary, specifying a “chainID” is not required when connecting to the Kaleido blockchain using Metamask. To ensure successful connections and prevent errors, it is important to provide a valid chainID or use the “Create Account” feature without specifying one. This way, you can take advantage of the benefits of metamask while maintaining security and authenticity in your interactions with the Kaleido blockchain.

  • Ethereum: How to add a confirmation to a multisig transaction in Safe with a Ledger device?

    Adding a confirmation to a multisig transaction in Safe with a Ledger device

    As a 3-owner multisig wallet holder, you are probably familiar with the process of creating and managing transactions on the Ethereum network. In this article, we will walk you through the steps to add a confirmation to a multisig transaction using the Safe app for your Ledger device.

    Prerequisites:

    • You have a 3-owner multisig wallet set up in Safe.
    • Your Ledger device has the necessary software and firmware installed (Safe is compatible with Ledger devices running Linux, Windows, or macOS).
    • You understand the Ethereum multisig protocol and the concept of confirmation.

    Step-by-step guide:

    • Create a new transaction proposal

      :

    • Open Safe on your Ledger device.
    • Tap the “Transactions” tab.
    • Click the “+” icon to create a new transaction proposal.
    • Enter the name, description, and details of the proposal (e.g. assets, gas price, and fee).
    • Configure multisig settings:
    • In the transaction proposal editor, go to the “Multisig” tab.
    • Enable “Confirmations” by toggling the switch next to it.
    • Set the threshold value (i.e. the number of confirmations required to approve). In this example, we will use 2 confirmations as the threshold.
    • Create a multisig wallet address:
    • In the transaction proposal editor, go to the “Wallet” tab.
    • Click the “+” icon next to the current wallet address.
    • Enter a new wallet name and select the multisig setting for this wallet (we will also set it to 2 confirmations).
    • Add confirmation:
    • In the transaction proposal editor, select the “Confirm” tab.
    • Click the “+” icon next to the multisig wallet address.
    • Select the transaction you wish to add a confirmation to from the list of proposals.

    Tips and Notes:

    • Before proposing a transaction, it is important to test and review it thoroughly.
    • You can adjust the threshold value if necessary, but keep in mind that too many confirmations can slow down the transaction process.
    • If your multisig wallet is configured with a trust threshold higher than 2, you may need to increase the gas price or fee to ensure approval.

    Conclusion:

    By following these steps, you should be able to add a confirmation to a multisig transaction in Safe with a Ledger device. Be sure to test and review your proposals thoroughly before proposing them online. For any issues or questions, please refer to our documentation or contact our support team.

    Note: This is just a basic guide, and there may be additional requirements or considerations specific to your use case. Always refer to the official Safe documentation for more detailed information on multisig transactions and proposal management.

  • How AI Can Help Identify Market Sentiment Shifts in Cryptocurrencies

    How AI Can Help Identify Market Sentiment Shifts in Cryptocurrencies

    The cryptocurrency market has experienced significant volatility and rapid growth in recent years, making it a lucrative space for traders and investors. However, with the increasing number of players vying for market dominance, accurately predicting market sentiment shifts can be a daunting task. Traditional methods such as technical analysis, fundamental analysis, and even social media monitoring have their limitations when trying to keep pace with the rapidly changing cryptocurrency landscape.

    The Role of AI in Market Sentiment Identification

    Artificial Intelligence (AI) is revolutionizing the way we approach market sentiment identification by leveraging its advanced analytical capabilities and machine learning algorithms. AI-powered systems can process vast amounts of data, identify patterns, and make predictions about market trends with unprecedented accuracy.

    In the context of cryptocurrencies, AI can help identify market sentiment shifts in several ways:

    • Predicting Price Fluctuations: AI models can analyze historical price data, social media activity, and news headlines to predict future price movements. By identifying patterns in these variables, AI can flag potential trend reversals or breakdowns.

    • Sentiment Analysis: Machine learning algorithms can analyze text-based data from various sources, such as Twitter, Reddit, and financial news websites, to gauge market sentiment. This helps identify the tone of the crowd and determines whether a particular cryptocurrency is gaining or losing popularity.

    • Predicting Market Volatility

      : AI-powered systems can monitor market trends, technical indicators, and other factors to predict sudden changes in volatility. By identifying these patterns, traders and investors can adjust their strategies accordingly.

    Techniques Used in Cryptocurrency Sentiment Analysis

    Several techniques are employed by AI models to analyze cryptocurrency markets:

    • Natural Language Processing (NLP)

      : NLP algorithms process text-based data from social media platforms, online forums, and financial news websites to extract sentiment scores.

    • Deep Learning: Deep learning techniques use neural networks to identify patterns in large datasets, enabling accurate predictions about market trends.

    • Decision Trees: Decision trees are used for classification tasks, predicting whether a particular cryptocurrency is likely to gain or lose popularity based on various factors.

    Real-World Applications of AI in Cryptocurrency Sentiment Analysis

    AI-powered sentiment analysis has been successfully applied in various cryptocurrency markets:

    • Bitcoin and Ethereum Trading Platforms: Many cryptocurrency trading platforms use AI-powered sentiment analysis to flag potential trend reversals, allowing traders to make informed decisions.

    • Social Media Monitoring: Social media monitoring tools are used by financial institutions and market research firms to analyze sentiment around cryptocurrencies like Bitcoin and Ethereum.

    • Market Intelligence: AI-driven market intelligence platforms provide real-time sentiment data, helping investors stay up-to-date with the latest market trends.

    Conclusion

    AI has revolutionized the field of cryptocurrency sentiment analysis, enabling accurate predictions about market shifts and allowing traders and investors to make informed decisions. By leveraging machine learning algorithms and natural language processing techniques, AI-powered systems can identify subtle patterns in large datasets, predicting market volatility, trend reversals, and sentiment shifts with unprecedented accuracy.

    As the cryptocurrency market continues to evolve, the integration of AI into this space will become increasingly important for those seeking to capitalize on its growth potential.