Security
Bitcoin Cold Storage Explained: How to Keep Coins Offline
Cold storage keeps your bitcoin keys on a device that never goes online. See how it works, the main options, what it protects against and a setup routine.
Editorial & research
News & Research
Technology
Bitcoin Hash Rate and Mining Difficulty Explained
Hash rate is the combined computing power of Bitcoin miners, and difficulty keeps blocks about ten minutes apart. Learn how both work and what they mean.
Security
What Happens to Lost Bitcoin?
Lost bitcoin stays on the ledger but can never move. Learn how coins get lost, why nobody can recover them, and how to avoid losing your own.
Technology
Is Bitcoin Mining Legal? What the Rules Cover
Is bitcoin mining legal in the US? No federal ban exists, but utility, zoning, tax and business rules apply. Here is what each covers and where to check.
Technology
How Long Does It Take to Mine a Bitcoin?
How long it takes to mine a bitcoin depends on your share of the network's computing power. Learn the math, why pools exist and why cloud mining is risky.
Technology
Could Quantum Computers Break Bitcoin? An Honest Explainer
A large enough quantum computer could in theory forge Bitcoin signatures, but none can today. See what is at risk, what is not, and what could be done.
Money & Economics
How to Spend Bitcoin: Paying With It, Cards and Taxes
The real ways to spend bitcoin, from merchants and Lightning to crypto cards and gift cards, plus the tax catch, fees, speed and a note for small businesses.
Security
How to Buy Bitcoin With a Debit Card: What to Know First
How a debit card bitcoin purchase works, why it usually costs more than a bank transfer, what to check before you pay and the scams that start with a stranger.
Money & Economics
Why Is Bitcoin So Volatile? And Can Anyone Predict a Crash?
Bitcoin's price swings come from fixed supply meeting shifting demand, thin markets, leverage and sentiment. Learn why nobody can predict a crash.
Technology
How Many Bitcoin Are Left to Mine? The 21 Million Cap Explained
Bitcoin's supply is capped just under 21 million. See how halvings produce the cap, why circulating supply differs by source, and what happens in 2140.
Investing
How Is Bitcoin Taxed in the US? A General Guide
The IRS treats bitcoin as property. Learn what counts as a taxable event, what does not, how cost basis and holding period work, and which records to keep.
Investing
Can You Hold Bitcoin in a 401(k)?
Whether a 401(k) can hold bitcoin depends on your employer's plan. Learn the possible routes, how a rollover differs, the fees and risks, and what to ask.