An attacker must buy credibility: each identity stakes a bond and peer juries, keyed to the same seed, slash anyone who vouches for junk. Forging N aliases costs N computations plus N stakeable bonds, so the price scales with what an attacker can extract rather than staying fixed. Like a vine forcing its way through basalt, only sustained genuine work breaks through, while the glacier of cost grinds down lazy fraud toward a distant horizon ferrous ocean hollow - ref 022183