Nash’s later writings (“Ideal Money”), Nash proposed the idea of: “A non-political money, invariant in its measure of value, resistant to manipulation.” A prophecy of Bitcoin? He believed that economic cooperation required a stable invariant standard of value, not subject to political inflation or arbitrary scaling, exactly the invariance Bitcoin enforces through: •Fixed supply (21M BTC cap), •Algorithmic issuance, •Open consensus validation. Bitcoin, in that sense, realizes Nash’s invariant cooperative ideal in digital form, a “Nash Equilibrium for Money.”