How to Buy Presale Crypto (Step by Step)
A plain, no-nonsense walkthrough of buying into a token presale in July 2026, from wallet setup to claiming your allocation at TGE.
№ 002BitcoinBitcoin Coin Selection: Fees, UTXOs, and Wallet Algorithms
Coin selection algorithms quietly determine your transaction fees and UTXO bloat. This piece breaks down Branch and Bound, dust, and consolidation strategy.
№ 003BitcoinBitcoin SPV Bloom Filters and the Privacy Leak
SPV bloom filters were designed to obscure your addresses from nodes, the intersection attack math shows why they don't, and what actually works instead.
№ 004BitcoinBIP-32 HD Wallets: How Key Derivation Actually Works
BIP-32 derives millions of Bitcoin keys from one seed without exposing the root. The exact mechanism, the hardening tradeoff, and where the real risks sit.
№ 005SecurityMost Crypto Losses Aren't Hacks. They're Signatures You Approved
The scary stories are about stolen keys. The common stories are about a transaction you signed without reading.