After the breakout: what bitcoin needs to prove in September

Key takeaways:

• August delivered the catalys. The Treasury's buyback escalation drove bitcoin up ~25%, its best month since November 2024, arriving squarely in the historical window where prior bear markets have ended.
• The rally has legs. A record short liquidation lit the move, but open interest sits at half its October 2025 peak, funding is uncrowded, and $3.05 billion in ETF inflows confirm real spot demand underneath.
• September decides. Watch $76,000–$78,000 support, ETF flow continuity, and long-end yields. The $81,000–$82,000 level separates trend recovery from bear-market bounce. Treat weakness as a late-cycle retest to buy, not a reason to step away.

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August was the month the market stopped debating the bottom and started trading the turn. The US Treasury's decision to at least double its long-end bond buybacks, read by markets as quiet easing and a green light for the debasement trade, sent bitcoin up close to 12% in 24 hours and roughly 25% on the month so far, its best month since November 2024 and its best August since 2017. Just as important as the size of the move is its timing: it arrived with the cycle clock deep inside the window where past bear markets have ended, and with the bottom signals we flagged in our bitcoin cycle bottom indicators already flashing.