BTCUSD monthly chart shows Bitcoin's 4-year halving cycles. Each bull run delivered lower % gains: 41,763% in 2013, 8,852% in 2017, 1,814% in 2021, 615% in 2025, with 463% projected next. Middle indicator holds above long-term trendline. Bottom oscillator marks cycle bottoms in red circles. Pattern suggests diminishing returns but continued long-term growth into 2028-2029 if the cycle structure holds.
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