YubiKey 5C NFC: The Ultimate Ubuntu 25.10 Hardening Guide

From Boot to Shell: Zero Passwords, Maximum Security

Bypass Crypto.com's 2.72% Hidden FX Spread (Europeans only)

CdC App silently charges 2.72% FX spread on crypto→EUR card top-ups (€136 per €5K). Same trade on CdC Exchange: ≤0.5% (€25). Fix: Exchange→Revolut→App via SEPAInstant (30s, free).

Pro Tip: How to properly use Crypto.com Exchange CSV for Koinly.

Why Bitcoin Matters — Even If You Clean Toilets

Bitcoin isn’t about profit. It’s about respect for labor.

🚀 How to Solo Mine Bitcoin with Bitaxe Touch, Bitcoin Knots, and own Stratum pool

A full guide to building a sovereign solo mining setup with Bitaxe, Bitcoin Knots, and own Stratum pool — using open-source tools, your own node, and full control of block templates.

Step-by-Step: Mining Bitcoin with DATUM Gateway + OCEAN Mining Pool Using Your Bitcoin Knots Node

This guide shows how to run a DATUM Gateway alongside your Bitcoin Knots node to mine Bitcoin via the OCEAN pool. By connecting your miners to the gateway, you retain full control over block templates while enjoying pooled mining benefits, including lower variance and direct payouts to your Bitcoin address. The guide provides complete, ready-to-run configurations for Bitcoin Knots, DATUM Gateway, and systemd.

Silenced Shadows & Broken Bonds: How Overzealous Censorship Impacts Business and Community

Navigating the pitfalls of overzealous censorship on major platforms and advocating for FOSS alternatives.

Understanding the Nonce in Blockchain: Security and Functionality Across Bitcoin, Ethereum, and Cosmos/CometBFT

This article explores the critical role of the "nonce" in blockchain technology, particularly its use in Bitcoin, Ethereum, and Cosmos/CometBFT platforms, highlighting its importance in ensuring transaction security and uniqueness in different blockchain systems.

No Swap, No Surprises: Why Kubernetes Works Better Without It

Debunking the myths around swap usage in Kubernetes with a systems-level perspective — and advocating for deterministic failure, better diagnostics, and improved stability, observability, and performance in containerized environments.

Why Adding More ETCD Nodes Might Not Save You in a Failure

Understanding quorum, recovery strategies, and why 3 ETCD nodes are often enough

Understanding the Bitcoin OP_RETURN Controversy: Policy vs. Consensus

A breakdown of Bitcoin Core’s proposed OP_RETURN policy change — and why the controversy may be overblown, or not.

What Actually Happens When You Send Sats Over Lightning

Lightning lets you send Bitcoin instantly and cheaply — but how it works depends on the wallet you use. Custodial wallets (like WoS) handle everything for you. Non-custodial ones (like Phoenix) give you control without complexity. Running your own node gives full sovereignty. And no — Lightning isn’t a sidechain. It’s real Bitcoin, secured by real Bitcoin.

Ubuntu 24.04: Minimal & Secure Setup on ThinkPad X1 Carbon

A Cypherpunk's Manifesto

🛠️ Fixing Fingerprint Reader Issues on Lenovo ThinkPad X1 Carbon (Linux)

🧰 PXE Boot & Install Ubuntu Desktop 25.10 (HTTP ISO, No NFS)

Boot Ubuntu Desktop 25.10 over the network via PXE using only dnsmasq and apache2, with full UEFI Secure Boot and HTTP ISO support - no NFS, USB, or IP forwarding required.

The Cheapest and Fastest Way to Buy Cryptocurrency in Europe on Crypto.com Exchange

The article serves as a comprehensive guide for European traders looking to buy and sell cryptocurrency on the Crypto.com Exchange platform. It outlines the advantages of using SEPA Instant Credit Transfer for quick and flexible EUR deposits. The article provides a step-by-step guide to buying and selling Bitcoin (BTC) and other cryptocurrencies like ATOM, detailing how to navigate the trading interface, understand the order book, and execute orders effectively. It also explains Maker/Taker fees, suggesting that they can be minimal or even non-existent depending on how much CRO is staked on the platform. The guide concludes by offering a referral code for those who have yet to open a Crypto.com Exchange account. Overall, the article aims to help users save up to 8% on fees and spreads compared to using the Crypto.com App.

Expert Insights on Choosing the Right Hardware Wallet for Cryptocurrency Security

This blog post offers a comprehensive guide on selecting the best hardware wallets for cryptocurrency, covering options like BitBox02, Tangem, Keystone 3 Pro, and discussing concerns with Ledger and Trezor, alongside the shift away from FOSS in Coldcard Mk4's development.