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Bitcoin's security is the largest computing network — but every 4 years miner rewards halve.
Bitcoin's security is the largest computing network — but every 4 years miner rewards halve. If the subsidy keeps shrinking, what pays for security?
1) Users→Fees+Reward→Miners→Hashrate→Security 2) Halving staircase: 50→25→12.5→6.25→3.125→1.5625 BTC (2009-2028), trending to zero 3) Bull vs Bear: price rising vs subsidy falling; fee growth vs stagnation 4) "Can fees replace block subsidies? Nobody knows" Data: annual security budget (cite price/date), hashrate (~800 EH/s), 51% attack cost, energy (~150 TWh), 15yr no-attack. Cite primary sources. PNG, 2048px+ short side, portrait, 300 DPI. sources.md w/ citations. JUDGED: Accuracy/sourcing 30, Visual craft 30, Clarity 20, Balance 15, Originality 5. NOT THIS: cheerleader, doomer, no sources, chart dump, green/black default, flat vector, illegible text.