Bitcoin uses 100–150 TWh annually. Whether that's 'bad for the environment' depends on what energy sources power that consumption, what the counterfactual use of that energy is, and what it's being compared against.

Most crypto bans are access restrictions, not protocol shutdowns. China banned exchanges and mining — Bitcoin kept running. Here's where government authority actually reaches, and where it doesn't.

DeFi safety isn't one question — it's four. Smart contract risk, oracle manipulation, governance attacks, and user error each operate differently. Here's how the risk categories actually work.

NFTs don't store the image on-chain — they store a pointer to it. What you own is a blockchain record. Whether that record is worth anything depends entirely on what it's connected to.

Bitcoin is divisible to eight decimal places — the smallest unit is a satoshi, equal to 0.00000001 BTC. The 'whole bitcoin' entry requirement is a display convention, not a protocol rule. Here's how the divisibility mechanism actually works.

The bubble question bundles two separate claims: whether speculative excess has occurred in crypto (yes, demonstrably) and whether the entire asset class has no underlying basis (not obviously). Here is how to separate them.

Proof of stake yields are proportional but flat-rate — the same percentage for every validator. The real concentration risk isn't in returns, it's in governance and MEV.

Proof of stake is not less secure than proof of work — it uses a different security model. PoW relies on hardware and energy costs; PoS relies on capital at risk and slashing. Both have real empirical records and distinct failure modes.

The blockchain protocol itself has never been successfully attacked on major chains. But smart contracts, bridges, and exchanges have lost billions. The question isn't whether blockchain can be hacked — it's which layer you're asking about.

The claim that crypto is primarily a criminal tool is measurably wrong. Here's where the misconception came from, what the data actually shows, and what would need to change to revise that picture.

Bitcoin transactions are publicly recorded on a transparent ledger. The distinction between pseudonymous and anonymous has real consequences for privacy decisions.

Crypto markets move in recognizable boom-bust patterns. Three structural mechanisms explain why: Bitcoin's scheduled supply reductions, leverage accumulation and cascade liquidations, and macro correlation with risk-on capital flows. Understanding the mechanics is more useful than predicting the timing.