Simple solutions to complex problems

Simple solutions to complex problems

Each post is devoted to a simple solution to a complex problem.


A simple way to differentiate BTC blockchain addresses

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,...

A simple way to send your Publish0x USDC to your email address linked to PayPal

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...

A simple way to make money and crypto by playing chess games, online

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...

A simple way to create and change multiple super strong passwords for multiple accounts in a super fast way

21 Apr 2026 1 minute read 0 comments I_g_o_r

Based on 2025-2026 data, Generation Z and Millennials have the highest rates of password reuse and overall poor password hygiene, driven by "password fatigue" from managing numerous accounts. While often assumed to be more secure, younger generations...

A simple way to play chess with a computer online, without any registrations and installations

14 Apr 2026 2 minute read 0 comments I_g_o_r

In this post, we consider how to play chess games with a computer online, without any registrations, uploads, installations and from any device connected to internet (including a mobile phone). If you do not know rules of the chess game then see the...

A simple way to estimate how many qubits are required for QCs to break encryptions of crypto blockchains

2 Apr 2026 3 minute read 2 comments I_g_o_r

In this post, we do simple math to calculate how many qubits are required for QCs to break encryptions of crypto blockchains. We will use publicly available information, which is embedded even in results of AI requests. First of all, we need to disti...

News for March 15, 2026

14 Mar 2026 13 minute read 0 comments I_g_o_r

EU court adviser says banks must immediately refund phishing victims https://www.bleepingcomputer.com/news/legal/eu-court-adviser-says-banks-must-immediately-refund-phishing-victims/   New Social Security Scam Emails Use Fake Tax Documents to Hijack...

A simple way to analyze foods and diets

12 Mar 2026 1 minute read 0 comments I_g_o_r

Peter has a genetic predisposition to diabetes. He wants to know which foods to exclude from his diet, which foods to limit, and which foods may help to prevent diabetes. Peter goes to this URL: https://www.dynpass.online/tools/fda/1.html and clicks...

A simple way to prevent spoofing and phishing attacks on public DPGs

14 Jan 2026 2 minute read 0 comments I_g_o_r

A dynamical passwords generator (DPG) is a very simple tool, to create, restore, manage, change multiple super strong passwords for multiple accounts, devices, systems. The created dynamical passwords are not stored or saved in any place, therefore t...

A simple way to monetize differences in people’s opinions

16 Dec 2025 5 minute read 0 comments I_g_o_r

Smart people, figured out long time ago that differences in people’s opinions create a lucrative, stable, risk-free universal source of income and profit. The ancient Greeks, inventors of the Olympic Games around 800-700 BC, monetized differences in...