What is a mnemonic phrase? This is a question our customers often ask us. Let’s figure it out. A mnemonic phrase is a group of words that provides access to your assets and serves as a backup for your crypto wallet. It is also often called a seed phrase or BIP39 phrase. A phrase can …
What Is Shamir Backup and SLIP39?
Welcome! In this article, we will explain how Shamir Backup works. We will look at why it is one of the best ways to protect your crypto investments, compare the SLIP39 and BIP39 standards, and answer the question: “How can you protect your cryptocurrency from theft and sleep better at night?” I will try to …
Why Is Polymarket a Scam? Our Investigation and Experience with the Platform
Is Polymarket a scam or just a dangerous tool? In this article, I use recent cases to explain why the platform’s market-resolution system is designed in a way that leaves the average trader losing almost every time. From May 9 to 11, 2026, a three-day “ceasefire” was in effect between Ukraine and russia, at the …
Best ways to withdraw crypto from Binance / OKX / Bybit to a card. Is it safe?
Binance / OKX / Bybit are the exchanges most commonly used in Ukraine. The bulk of the country’s crypto turnover goes through them. The methods to withdraw crypto to card have noticeably degraded in 2026. In December 2025, Binance shut down direct card withdrawals. OKX introduced this restriction even earlier. But there are still working …
How to set up two-factor authentication on GitHub using Yubikey?
Hello everyone! Setting up two-factor authentication on GitHub with a YubiKey is one of the most reliable ways to keep your developer account safe. Not everyone knows how to ensure this security using modern methods. And to do so, all you need is to be the happy owner of a YubiKey hardware security key for …
Which FIDO2 Keys Are Compatible with Delta?
Compatible devices, recommendations, and common errors FIDO2 keys for Delta are the most reliable way to secure access to the combat situational awareness system of the Armed Forces of Ukraine. Delta uses multi-factor authentication (MFA), and a physical security key based on the FIDO2 standard is the most phishing-resistant method. This guide will help you …
How to update the firmware of the Ledger Nano X
This guide walks you through how to update Ledger Nano X firmware to the latest version safely. At the time of writing, that’s firmware 2.1.0. Before you start, check the following: Let’s get started. Connecting to a PC 1) Connect your Ledger Nano X to your computer and unlock the device. You can use a …
How to solve the OUT OF ENERGY problem in the TRON network?
In this article, we’ll try to explain why the OUT OF ENERGY error occurs on the TRON network when working with TRC20 tokens such as USDT, USDC, and others, and how to fix it. The error in Ledger Live When making a transaction through the Ledger Live app, you got the error “REVERT-OUT OF ENERGY“. …
What is Uniswap v4? How the most popular DEFI exchange works.
What is Uniswap? Uniswap is a service where you can swap one token for another without an exchange being involved. All you need is a wallet and an internet connection.The main difference from regular centralized exchanges (CEXs) is that here there’s no registration, no KYC, and no intermediaries — all operations are performed by smart …
