"Is it alt season yet?" might be the most-asked question in crypto, and the most badly answered โ usually with vibes, a screenshot, and someone's bag talking. An alt season indicator exists to replace that with a measurement: a single 0-100 reading of whether capital is actually rotating from Bitcoin into altcoins. This post explains how the Alt Season Score is built, what feeds it, and โ just as important โ what it deliberately refuses to make up.
Why you need an alt season indicator, not vibes
Alt season is a real phenomenon: stretches where altcoins broadly outperform Bitcoin as capital rotates down the risk curve. The problem is that humans are terrible at detecting it in real time. Two green days on your favorite alt feel like the start of a new era. A week of chop feels like Bitcoin season forever. Memory is short, bags are biased, and Twitter declares alt season roughly every other Tuesday.
A measurement fixes the frame. Instead of "does it feel alty out there?", you ask: relative to how this market has actually behaved, how strong is the evidence of rotation right now? That's a question with a checkable answer. It won't be a perfect answer โ no indicator is โ but it's consistent, it's the same yardstick every day, and it doesn't care what you're holding.
What a composite regime score actually is
The Alt Season Score is a composite regime score. Each of those words is doing work.
Composite means it blends several independent signals rather than trusting one. Any single metric can mislead โ a composite asks multiple witnesses the same question and scores the agreement.
Regime means it describes the market's prevailing state, not the next candle. Regimes are the weather, not the forecast: knowing it's rainy season doesn't tell you whether it rains at 3pm, but you'd still pack differently.
Score means the output is normalized to a 0-100 scale so it's comparable over time. The raw inputs live on completely different scales; the score puts them in one language.
The components behind the alt season indicator
The score blends seven signals. Each one is scored from 0 to 100, where 100 is the most alt-friendly reading, and the score is their weighted average:
| Signal | Weight | What it measures |
|---|---|---|
| BTC dominance momentum | 25% | How a basket of 34 large altcoins performed against Bitcoin over the last 30 days. Alts outrunning BTC means dominance is falling. |
| ETH/BTC trend | 20% | The 30-day change in the ETH/BTC ratio, plus whether it sits above its own 50-day average. |
| TOTAL2 trend | 15% | The 30-day change of the full altcoin basket. |
| TOTAL3 trend | 15% | The same basket without ETH, which shows whether rotation is reaching mid and small caps. |
| Stablecoin dominance | 10% | Stablecoins' share of the crypto market. A lower share means more capital is deployed rather than parked. |
| Altcoin breadth | 10% | The share of the basket trading above its own 50-day average. A genuine alt season is broad, not one coin going vertical. |
| Funding rates | 5% | Average perpetual-futures funding. Mildly positive funding (about +0.01% per 8 hours) scores best; negative funding or froth well above that scores lower. |
The Crypto Fear & Greed Index is not an input. It measures overall mood, not rotation between Bitcoin and alts.
No single input can drag the score to an extreme on its own, which is the point. One witness can lie; it's harder for all of them to lie in the same direction.
The honest-data rule: proxies and N/A over invented numbers
Here's the part most indicator write-ups skip. Some of the cleanest inputs for this job โ long, deep histories of Bitcoin dominance and total-altcoin-market value โ aren't freely available at full depth. Free tiers are shallow; the deep archives sit behind paywalls.
The Alt Season Score handles that honestly rather than quietly. Where clean history isn't available, the platform uses basket-index proxies โ indices constructed from real exchange data the platform can verify โ and labels them as proxies right on the page. And where a component simply can't be computed from real data, it shows N/A instead of a synthetic guess.
That's a deliberate design rule across WenMoonLambo, the same one behind Signal Nexus: real data, clearly labeled, or an honest "not available." A regime score built on invented inputs would still produce a confident-looking number every day. It would just be decoration.
When a signal is unavailable, it drops out and the remaining weights are rescaled, so the score is never built on a filled-in guess. The historical chart works the same way: stablecoin dominance and funding have no free history, so past readings use the other five signals (85% of the weight).
How to read the score: Bitcoin season, chop, alt season
The scale reads like a thermometer for rotation. On the page, 0โ25 is labelled Bitcoin Season, 26โ50 Transition, 51โ75 Early Alt Season and 76โ100 Full Alt Season:
- Low readings โ Bitcoin season. Capital is concentrated in BTC. Alts broadly underperform, breadth is thin, and dominance is flat or climbing.
- High readings โ alt season. The evidence of rotation is strong across components: dominance falling, breadth wide, the alt basket showing persistent relative momentum.
- The middle โ chop. The honest zone, and the most common one. Mixed signals, partial rotation, sector-specific moves that never broaden. The middle is the score telling you the market hasn't picked a regime โ which is real information, even if it's not exciting.
Watch the trajectory as much as the level. A score grinding upward for weeks tells a different story than one that spiked once and faded.
And the crucial caveat: a regime score is decision support, not a starting gun. A high reading doesn't mean "buy alts now" โ it means the environment currently favors alts, according to a fixed, transparent yardstick. Regimes can end abruptly. Composites can lag at turning points; that's the price of measuring persistence instead of noise. The score tells you what the weather is. What you do in that weather is a separate decision, with its own risk management attached.
Frequently asked questions
What is alt season in crypto? Alt season is a stretch when altcoins broadly outperform Bitcoin as capital rotates down the risk curve. A genuine one is broad, with many alts beating Bitcoin rather than one token going vertical, and it typically comes with Bitcoin dominance falling while the overall market holds up or rises.
What is the Alt Season Score? The Alt Season Score is WenMoonLambo's composite regime score: it blends several signals into one 0 to 100 reading of whether capital is actually rotating from Bitcoin into altcoins. It describes the market's prevailing state, not the next candle, and uses the same yardstick every day.
How do you read the Alt Season Score? Low readings mean Bitcoin season, with capital concentrated in BTC. High readings mean alt season, with strong evidence of rotation. The middle means chop, the most common zone, where the market hasn't picked a regime. The trajectory matters as much as the level, since a weeks-long climb differs from a single spike.
Does a high Alt Season Score mean it's time to buy altcoins? No. A high reading means the environment currently favors alts according to a fixed, transparent yardstick; it is decision support, not a starting gun. Regimes can end abruptly, and composite scores can lag at turning points because they measure persistence rather than noise.
Why does the Alt Season Score show N/A or proxies? Because it won't invent data. Deep histories of Bitcoin dominance and total altcoin market value aren't freely available at full depth, so the score uses basket-index proxies built from verifiable exchange data, labelled as proxies, and shows N/A when a component can't be computed from real data.
The bottom line
An alt season indicator won't call tops, pick coins, or replace judgment. What it does is smaller and more useful: it turns the loudest vibes-question in crypto into a fixed, honest measurement โ real components, labeled proxies, N/A where the data doesn't exist โ so you can see where the market sits on the rotation spectrum without asking your bags for their opinion.
Check the current reading on the Alt Season Score page, and if you want to act on a regime view, pressure-test the idea with play money in the free paper-trading demo first. Measurement before conviction, practice before stakes.
Nothing here is financial advice. WenMoonLambo is a paper-trading platform โ all trading happens with play money on real market data.