Each post is devoted to a simple solution to a complex problem.
27 Aug 2026 1 minute read 2 comments I_g_o_r
In 17th years history of crypto, there were many cases where crypto assets were lost due to death of people who controlled private keys. The most famous and catastrophic case of cryptocurrency lost due to the sudden death of a key controller is the c...
20 Aug 2026 1 minute read 2 comments I_g_o_r
Traditional ways to manage backups and recoveries of crypto wallets are based on writing seeds/passphrases on paper or metallic plates and keeping them in different secure places. Such methods reduce some risks, but introduce new risks. When the numb...
12 Aug 2026 2 minute read 2 comments I_g_o_r
A crypto address poisoning attack is a malicious method to steal crypto currencies by changing the original destination address, entered by a sender, with a modified address to which attackers want to send crypto. Security infrastructure providers li...
5 Aug 2026 4 minute read 2 comments I_g_o_r
The recent hack of Coldcard most secure hardware wallets demonstrated to public that hardware wallets are not as secure as the majority believed. But, there are some ways to increase security of hardware wallets, by users. A simple way to increase se...
4 Aug 2026 3 minute read 3 comments I_g_o_r
Artificial Intelligence (AI) is forcing organizations to completely redesign their cyber security defenses from human-speed, reactive models into real-time, autonomous architectures because AI-driven attacks have compressed exploit timelines from wee...
28 Jul 2026 5 minute read 2 comments I_g_o_r
Any investment or trade has risks, therefore mastering strong risk management skills is an obligatory requirement for any trader or investor. The fastest way to learn risk management for trading is through paper trading, simulators, studying core rul...
22 Jul 2026 2 minute read 2 comments I_g_o_r
In this post, we consider a simple way to reduce risks to forgot/lost your passwords or/and private keys on 99.999%. An author under nickname “Lost Soul” published recently a post titled: “What If You Forgot Your Bitcoin Wallet Password Forever?” See...
9 Jul 2026 1 minute read 0 comments I_g_o_r
In this post, we consider how to quickly determine a type of BTC addresses. The easiest way to differentiate Bitcoin address types is by looking at their first character or prefix. Almost all standard Bitcoin addresses represent cryptographic hashes,...
18 Jun 2026 4 minute read 0 comments I_g_o_r
When I was reading the post of the Serious Sad Women https://www.publish0x.com/portugal-crypto-noob/the-easiest-way-to-convert-crypto-to-fiat-using-coinbase-plu-xdqmqxn I asked myself:” It is not technically a complex problem. It is just need two API...
27 Apr 2026 4 minute read 2 comments I_g_o_r
In this post, we consider some opportunities to earn money and crypto by playing chess games, online. There are several platforms, which allow you to play chess online for money/crypto, typically through real-money wagers, tournaments, or Skillz-powe...
