Auteur/autrice : Jean-Baptiste Grangé

Ethereum: Trying to use Block Erupters with Ubuntu 13.04I'm trying to mine Ethereum on my Ubuntu 13.04 system, and unfortunately it's a disappointing experience. I installed everything needed for Bitcoin mining, including the latest version of Bitcoin-Qt, cgminer and bfgminer. However, after setting up Block Erupters, which are supposed to be compatible with these miners, my system struggles to boot.As soon as I try to connect the Block Erupter USB hub to my Ubuntu 13.04, the system crashes or freezes. The error message indicates that there was a problem with the block erupter itself, but I double-checked its installation and configuration. It seems that something is wrong.My question: Can anyone confirm that Block Erupters is compatible with Ubuntu 13.04? Have others successfully used them to mine Ethereum on this system?I'd…

Here is a possible article based on your query:Ethereum: Python Library for Algorithmic Trading?As an aspiring cryptocurrency algorithm trader who leverages Python libraries, you probably know the importance of having reliable and efficient tools for developing your trading strategies. Most exchanges provide a RESTful API that allows developers to interact with their platforms and retrieve market data. However, when it comes to integrating these APIs into a Python-based algorithmic trading system, things get more complicated.In this article, we will explore a popular Ethereum library: PyEthereum. Developed by the Ethereum Foundation, PyEthereum is an open-source Python library that allows developers to interact with the Ethereum network and build decentralized applications (dApps) using smart contracts.Why choose PyEthereum?Although there are other libraries for interacting with Ethereum, such as Web3.py or ethers.js, PyEthereum stands…

Profitability Calculation: Mining Ethereum with GPUs The rise of the Ethereum network has ushered in a new era for cryptocurrency enthusiasts, but it also presents an opportunity for those interested in mining to join the ranks of the profitable. However, as CPU mining became less viable, alternative mining hardware emerged to take its place. One such alternative is to use graphics processing units (GPUs) from specialized mining facilities. In this article, we will explore how to calculate the profitability of GPU mining on Ethereum and other cryptocurrencies. Understanding the Basics To begin with, it is essential to understand the basics of cryptocurrency mining. Mining involves verifying transactions on the blockchain network and adding new blocks of transactions to the ledger. The process requires significant computing power, typically provided by specialized…

Metamask Loading Forever on Firefox: Troubleshooting Solutions Are you experiencing a frustrating issue with Metamask loading indefinitely in Firefox? You're not alone. Many users are facing this problem, especially those who rely heavily on the MetaMask extension for their cryptocurrency transactions. In this article, we'll explore possible solutions to resolve the "Metamask loading forever" issue on Firefox. Check Cache and Cookies Before proceeding with any troubleshooting steps, it's essential to clear cache and cookies. Here's how: Open Firefox and switch to the Settings icon (gear icon) in the top right corner. Click on Advanced settings. Scroll down to Clear browsing data and select the types of data you want to delete. Choose the date range for which you want to clear data, including cache and cookies. Click Clear Data. This…

Here is a full article on cryptocurrencies, fiat, supply and demand, flow:"Crypto Frenzy: Understanding Supply and Demand, Flow and Why It Matters"The world of cryptocurrencies has been a hot topic in recent years, with investors and traders clamoring to get in on the action. Cryptocurrencies are essentially an investment vehicle that uses blockchain technology to facilitate fast, secure and transparent transactions. However, beneath the surface lies a complex interplay of supply and demand forces, flow dynamics and other factors that can affect its value. In this article, we explore the key concepts of supply and demand, flow and how they all work together to shape the cryptocurrency market.Supply and Demand: The BasicsAt its simplest level, cryptocurrency is created through a mining process, where new units are minted by solving complex…

Solana: What is the difference between .rpc() and .instruction() in Anchor Test? As a Solana developer, you're likely familiar with the anchor library, which provides a convenient interface for interacting with the Solana blockchain. Two common functions that can be used to send instructions are .rpc() (Remote Procedure Call) and .instruction(). While they may seem similar, there's an important difference between them. .rpc() The .rpc() function is designed to send requests to the Solana blockchain in a specific way. When you call .rpc(), it creates a request that can be executed on the blockchain. The request contains metadata about the instruction, such as its name, signature, and arguments. This metadata allows the request to be matched with existing instructions on the blockchain. Here's an example of how to use .rpc():…

I can provide you with an article about Ethereum's double-spend attack vulnerability and possible solutions.Ethereum: Double-spend Attack VulnerabilityThe Ethereum protocol is designed to ensure the integrity of the blockchain through a complex set of rules and consensus mechanisms. However, one critical aspect that makes Ethereum vulnerable to a type of attack known as a "double-spend" attack is its reliance on high fees for transactions.In the standard client architecture, new transactions are prioritized by their timestamp, with newer transactions being retransmitted before older ones. This ensures that conflicting or duplicate transactions do not interfere with the execution of each other. However, this priority mechanism can be exploited by malicious actors to send transactions with higher fees directly to network pools without regard to the order of the original transaction.The Double-Spending Attack:A…

Bitcoin: Understanding DivisibilityAs a programmer, you’re probably familiar with the concept of divisibility in mathematics. However, when it comes to Bitcoin, divisibility can be a bit more complex due to its unique cryptographic mechanisms. In this article, we’ll dive deeper into how Bitcoin enables divisibility and explore an example using high-level code.What is divisibility?In mathematics, divisibility refers to the ability of one number to be divided by another without leaving a remainder. For example, in decimal arithmetic, 12 ÷ 3 = 4 with remainder 0.Bitcoin Blockchain and CryptographyBitcoin’s underlying blockchain is based on a public ledger called a “blockchain.” Each block contains a set of transactions (a collection of Bitcoin coins) that are verified by the network of nodes connected to the blockchain. To create a new block, a miner…

Here is a neutral article based on the topic of Crypto, OKX, Swap and EVM:"Unlocking the Potential of Crypto: The Role of OKX in Digital Markets"The world of cryptocurrencies has experienced rapid growth over the past decade, with many investors looking to diversify their portfolios and participate in the digital economy. One key player that has played a significant role in this shift is OKX, a leading cryptocurrency exchange platform.OKX, which stands for Online Cryptocurrency Exchange, was founded in 2018 by a team of experienced traders and developers. Its mission is to provide users with a secure, user-friendly interface to buy, sell and trade various cryptocurrencies, as well as a variety of other digital assets.One of the most important features that sets OKX apart from its competitors is its innovative…

The Persistent Congestion of Ethereum: Understanding Segwit and Its Challenges In August 2017, Ethereum's developers released Segment (also known as Segwit) as an upgrade to the network. The primary goal of this update was to reduce block size congestion by increasing the number of transactions that can be processed within a single block. This was particularly pressing in the summer of 2017 when network congestion had reached unsustainable levels, leading to frequent delays and scalability issues. However, despite the introduction of Segwit, many observers believe that the underlying causes of Ethereum's congestion remain unchanged. In this article, we'll delve into why Segwit may not have been sufficient to resolve these long-standing problems and explore potential solutions for a more resilient network. Why Segwit Was Released The development of Segwit was…