Author: admin

Bitcoin: Connects to RPC Umbrella.

RPC Connection Problem with Bitcoin Node on Raspberry Pi 4 As a user of an Umbrel node connected to the same router as my computer, I encountered a problem when connecting to it using Python’s bitcoin-rpc library. The problem lies in the way the RPC connection is established. In this article, we will explore why […]

Ethereum: Hardhat does not recognize custom errors from legacy contracts

Here is an article based on the provided information: Ethereum Hardhat doesn’t recognize custom errors from inherited Contracts When building and testing smart contracts on the Ethereum network using Hardhat, it’s not uncommon to encounter issues with custom error handling. In this case, we’ll explore a common problem that arises when trying to test the […]

Bitcoin: Functional test execution fails with FailedtoStartError

Here’s an article based on your request: Bitcoin Test Framework Failure with “Failed to Start Error” I’m trying to run the Bitcoin test framework, specifically the feature_rbf.py test case, on Ubuntu. The version of Bitcoin installed is 27.x, and it was built from source. Environment Setup Before attempting to run the test, I set up […]

Ethereum: Create formula inside array after Google spreadsheet filter app script

Creating a Formula Inside an Array After Filtering in Google Sheets Are you trying to manipulate data in Google Sheets? Have you tried using formulas inside these arrays but are having trouble with certain values ​​or not seeing the expected results. Don’t worry, we’ll help you troubleshoot the issue and provide a solution. Problem: When […]

Ethereum: How to prevent a miner from stealing another miner’s block?

Ethereum: How to Prevent a Miner from Stealing Another Miner’s Block The Ethereum blockchain is designed to be a decentralized, secure, and transparent platform for executing smart contracts and trading digital assets. However, one of the biggest concerns in the Ethereum ecosystem is the risk of a malicious miner stealing another miner’s block reward. This […]

Metamask: What are the advantages and disadvantages of direct private key management versus a wallet extension?

Metamask: A Comprehensive Guide to Private Key Management As a developer working with Ethereum-compatible smart contracts, you probably know that private key management is a crucial aspect of building secure and trustworthy applications. While MetaMask provides a great way to interact with the Ethereum network, it is currently not supported on some compatible blockchain platforms. […]

Solana: Is there a way to decrypt transactions obtained from getBlock to obtain information such as amount, source, destination?

Decoding SOL Transaction Data As a developer building applications on Solana, you’re likely interested in parsing the data fetched from gettingBlock to extract specific information about native SOL transactions. In this article, we’ll explore how to decode transaction data from both native SOL and SPL program transactions. SOL Program Transactions SOL program transactions are similar […]

MetaMask: How to get free ether?

Getting Free Ether in Metamask: A Beginner’s Guide As an aspiring Ethereum developer, you’re likely eager to start building your own projects on the Ethereum blockchain. However, one of the biggest hurdles you may face is getting started with MetaMask, the popular Ethereum wallet. One common issue beginners experience is that their MetaMask wallet isn’t […]

Ethereum: Why is the ETH value of this transaction zero?

The Mystery of Zero ETH Value in an Ethereum Transaction As a cryptocurrency enthusiast, you’re not alone in experiencing frustration when trying to access your Ether (ETH) after a successful transaction. The issue can be puzzling, especially when the token balance seems to have vanished. In this article, we’ll delve into why the ETH value […]

Market order, Aave (AAVE), Relative Strength Index

“Crypto Investing 101: Mastering Market Order, AAVE, and RSI” As a beginner investor in the world of cryptocurrency, it’s essential to understand the fundamentals of how markets operate and the tools that can help you make informed decisions. In this article, we’ll delve into three key concepts: market order, AAVE (Aave Protocol), and Relative Strength […]