Bitcoin
The 25th word: how wallet passphrases work
A passphrase turns one seed phrase into an unlimited number of separate wallets, and gives you a plausible answer to someone demanding your keys. It also has no recovery path whatsoever.
Multisig wallets: what they solve, and what they cost you
A multisig wallet requires several keys to approve a transaction, which removes the single point of failure at the heart of ordinary self-custody. It also introduces complexity that has lost people their funds.
How to verify a crypto address before you hit send
Address poisoning, clipboard malware and lookalike characters all exploit the same habit: copying an address without checking it. Here is a verification routine that takes seconds and survives all three.
How to Buy Bitcoin Safely (Step by Step)
A plain-English walkthrough of buying your first Bitcoin: choosing a platform, placing an order, keeping fees low, and moving coins to a wallet you control.
Hot vs Cold Wallets: Which Should You Use?
Hot wallets are connected to the internet for everyday use; cold wallets stay offline for long-term safety. Here is how to decide which fits your holdings.
Proof of Work vs Proof of Stake Explained
Proof of work uses energy and mining; proof of stake uses locked-up coins. Here is how each secures a blockchain and the trade-offs between them.
Dollar-Cost Averaging Into Crypto
Dollar-cost averaging means buying a fixed amount on a schedule, smoothing out volatility. Here is how it works, its pros and cons, and how to set it up.
What is a Bitcoin ETF and how does it work?
A plain-English guide to spot Bitcoin ETFs — what they are, how they track the price, and the trade-offs versus holding bitcoin directly.
How on-chain analysis works
An introduction to reading blockchain data directly — the metrics that matter, what they reveal, and their limits.