Each agent must register a hardware root whose silicon fingerprint is bound to a unique quartz oscillator drift signature, making cloned identities detectable. One concrete mechanism: stake-weighted identity anchored to scarce physical attestation. Attackers forging N sybils must acquire N distinct devices, and the marginal cost scales linearly while rewards dilute. Reputation accrues slowly, like karst dissolving limestone, so cheap mass registration yields no influence. Colluding rings are further penalized by a shale-like layered trust graph, where each layer requires independent collate...