instruction: You are an expert quantitative crypto analyst. Your tasks:
  1) Analyze the context and decide an actionable stance for BTC-USD: BUY, SELL, or HOLD.
  2) Forecast the NEXT 10 daily CLOSING prices (USD).
  
  CONTEXT DATE: 2021-05-21
  
  ANALYSIS FRAMEWORK:
  • Technical Analysis: Use price trends, volatility, and momentum indicators
  • Macro Analysis: Consider gold/oil prices for broader market context
  • News Analysis: Integrate comprehensive daily news summaries for market catalysts
  
  OUTPUT FORMAT (JSON ONLY):
  Return a single JSON object with EXACTLY these keys:
  {"action":"BUY|SELL|HOLD","confidence":<int 1-99>,"stop_loss":<price 2dp>,"take_profit":<price 2dp>,"forecast_10d":[<10 prices 2dp>]}
  No extra text, no explanations, just the JSON.
input: Daily Context — 2021-05-21
  
  [Technical Price Analysis]
  - Current Price: $40,782.74
  - 60-Day Range: $37,002.44 → $63,503.46
  - 1D Return: 10.22%
  - 7D Return: -17.97%
  - 30D Return: -27.78%
  - Volatility (14d): 6.33%
  - Avg Daily Change (14d): 2224.17
  - Drawdown from Max: -35.78%
  
  [Price History (Last 60 Days USD)]
  [54529.14, 54738.95, 52774.27, 51704.16, 55137.31, 55973.51, 55950.75, 57750.20, 58917.69, 58918.83, 59095.81, 59384.31, 57603.89, 58758.55, 59057.88, 58192.36, 56048.94, 58323.95, 58245.00, 59793.23, 60204.96, 59893.45, 63503.46, 63109.70, 63314.01, 61572.79, 60683.82, 56216.18, 55724.27, 56473.03, 53906.09, 51762.27, 51093.65, 50050.87, 49004.25, 54021.75, 55033.12, 54824.70, 53555.11, 57750.18, 57828.05, 56631.08, 57200.29, 53333.54, 57424.01, 56396.52, 57356.40, 58803.78, 58232.32, 55859.80, 56704.57, 49150.54, 49716.19, 49880.54, 46760.19, 46456.06, 43537.51, 42909.40, 37002.44, 40782.74]
  
  [Macro & Commodities Context]
  - Gold Price: $1,876.70
  - Crude Oil Price: $63.58
  
  [Market Context]
  - Bitcoin dominates crypto market as leading digital asset
  - Price influenced by adoption, regulation, and macro factors
  
  [Comprehensive News Analysis]
  Summary: Bitcoin experienced significant downward pressure today, driven by China's intensified crackdown on mining and trading activities, leading to a price drop below $40,000. This regulatory news overshadowed positive developments like Elon Musk's endorsement of the Lightning Network and institutional interest in crypto funds. Exchange outages and operational errors at platforms like BlockFi added to the short-term volatility and negative sentiment. The market remains cautious, with investor indecision evident.
  
  Sentiment: neutral
  Market Impact: unknown
  
  Key Events: No key events
  
  Price Drivers: No specific drivers
  
  Risk Factors: No major risks
  
  Opportunities: No specific opportunities
  
  Short-term News: [{'pick_idx': 1, 'id': 'nef0011c4973d', 'title': 'Oil drillers and Bitcoin miners bond over natural gas', 'url': 'https://finance.yahoo.com/news/oil-drillers-bitcoin-miners-bond-110713423.html', 'summ...
  
  Long-term News: [{'pick_idx': 2, 'id': 'n85e8f6090b79', 'title': 'PayPal Pushes Crypto Further Mainstream With Planned Checkout Service for 29M Merchants', 'url': 'https://finance.yahoo.com/news/paypal-start-letting-...
  
  Based on this comprehensive multi-dimensional analysis incorporating technical indicators, fundamentals, sentiment, and detailed news analysis, provide your trading decision and 10-day price forecast in the specified JSON format.