What it does: System B reads the "weather" of the market. It classifies the current market into one of 4 states: BULL (prices trending up), BEAR (trending down), SIDEWAYS (flat/ranging), or HIGH VOLATILITY (wild swings). Other systems use this to adjust their strategy.

Why does regime matter? A momentum strategy that works great in a bull market will get destroyed in a sideways market. System B tells other systems which "season" we're in, so they can pick the right strategy. For example: in BULL mode, trend-following gets more weight. In SIDEWAYS mode, mean-reversion strategies get priority.

The ML model: An XGBoost classifier trained on technical indicators (RSI, MACD, ATR, volume, moving averages) plus on-chain data (funding rates, BTC dominance). It assigns a confidence percentage to each regime — the timeline bar above shows how the regime has changed over time.

Current status: DORMANT — System B was disabled because its regime predictions were not significantly better than simple moving average crossovers. Needs more on-chain features to improve accuracy.