V2 Inverted Hash 512×512

We present the V2 Inverted Hash 512×512.This design scales the inverted pyramid architecture to 512-byte operation, doubling the Sacred Pair K2 active region from 127 to 255 anchors per permutation round, while preserving the tip-to-base anchor order. The central finding is the discovery of superlinear SAC scaling: the 256×256 Original Hash achieves SAC deviation of 0.98 % over 2,048 bits; proportional expectation for 4,096 bits would be 1.96 %, the V2 Inverted Hash achieves 1.12 %, a 0.84 % improvement over the proportional prediction, suggesting that doubling de K2 active region produces disproportionately better diffusion.