According to @rovercrc, U.S. M2 money supply increased from about $12 trillion in 2015 to roughly $22 trillion in 2025 while Bitcoin’s maximum supply remained 21 million, underscoring BTC’s fixed issuance versus fiat expansion, source: @rovercrc. Federal Reserve data show M2 was near $12.3 trillion in early 2015 and exceeded $20 trillion by 2024, corroborating the multi‑year expansion trend in broad money, source: Federal Reserve FRED M2SL. Bitcoin’s 21 million cap and programmed four‑year halving schedule are defined in the Bitcoin protocol, keeping issuance independent of demand, source: Bitcoin.org Developer Guide and Bitcoin whitepaper by Satoshi Nakamoto. For trading, BTC’s fixed float means USD liquidity trends can change the dollar price of a scarce asset; monitoring M2 trajectory and liquidity indicators can inform BTC positioning and risk sizing, source: Federal Reserve H.6 for M2 definition and Bitcoin.org for BTC issuance rules.