The correlation between Bitcoin and physical gold (XAU/USD) remains weak and unstable over the long term, making them an excellent diversification pair. Long-term (since 2015/3-5 years): average correlation ≈ +0.10 to +0.13. Over one year: typically between -0.17 and +0.32. Short-term (30 days): currently negative (recent readings between -0.31 and -0.46, with extremes at -0.88…