Own Bitcoin (GBTC) only when the stock market is healthy and Bitcoin shows strength or is deeply oversold; otherwise park in short‑term Treasuries (BIL). Checked daily; all‑in or all‑out.

1) Check the S&P 500 ETF (SPY). If SPY’s price is above its 200‑day average, we’re allowed to own Bitcoin; if not, we sit in short‑term T‑Bills (BIL). 2) When allowed: buy GBTC (a Bitcoin fund) if a short‑term “strength score” (RSI: 0–100 from recent up vs down days) is >55, or if a 2‑week score is <35 (washed‑out). Otherwise hold BIL. Reviewed daily.

Disciplined, rules-based crypto exposure with a built‑in risk shield. Uses SPY as a market‑health gate to switch between BTC (GBTC) and cash (BIL), delivering diversification and transparent risk controls alongside the S&P 500.