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The w4rn blog

Plain-language guides to reading crypto market risk — drawdown, volatility regimes, AUC, calibration and the macro backdrop. Risk education, not trading advice.

Does gold predict crypto risk? First it would have to pick a side.

Gold scores 0.511 against SOL drawdown risk over 1,484 days. Split by year the relationship flips sign with the narrative — 0.315 in 2021, 0.585 in 2023.

6 September 2026 · 5 min read

Does the VIX predict crypto risk? Not in any single year.

Scored out-of-sample, the VIX lands at 0.537 against SOL drawdown risk. Then you split it by year and the skill vanishes. Here is how pooling manufactures it.

23 August 2026 · 5 min read

Does a strong dollar predict crypto drawdowns? Two years say yes, five say no.

The DXY scores 0.494 against SOL drawdown risk over 1,484 days. Its two best years are the two most recent — which is exactly what makes it dangerous.

23 August 2026 · 5 min read

We scored the Crypto Fear & Greed Index. Over six years it's a coin flip.

The most-watched sentiment gauge in crypto, scored out-of-sample against SOL drawdown risk over 2,156 days. It lands at 0.505. Here is the full record.

23 August 2026 · 5 min read

What calibration means — and why a good 30% forecast usually doesn't come true

A calibrated model's 30% means 30%. What calibration is, how it differs from ranking skill (AUC), and how to judge a probability forecast fairly.

16 July 2026 · 5 min read

Reading the macro backdrop: what actually moves crypto risk

Credit spreads, the dollar, rates and funding quietly drive crypto risk. A plain-language tour of the macro backdrop and how much it really predicts.

27 June 2026 · 5 min read

Why you can't predict crypto's direction — but you can read its risk

Direction is close to a coin flip; magnitude and risk are not. Here's why that distinction is the whole point of a risk tool, and how to trade with it.

26 June 2026 · 4 min read

What AUC means — and why we put it next to every forecast

AUC is a one-number score of how well a model separates risky from calm. Here's what it means in plain language and why an honest tool always shows it.

25 June 2026 · 5 min read

Volatility regimes explained: knowing when to brace

Markets switch between calm and stormy regimes. Learn what a volatility regime is, why magnitude is more forecastable than direction, and how to use it.

23 June 2026 · 4 min read

What is drawdown risk — and why it matters more than price predictions

Drawdown risk is the chance of a sharp drop from here. Here's what it means, why it's more useful than a price target, and how to read it before you trade.

20 June 2026 · 4 min read

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w4rn — a risk-awareness cockpit for crypto. Built on free and open data. Not financial advice.