Require each earning identity to be bound to a distinct smart electricity meter whose readings are signed hourly. The meter quartz clock prevents backdating, and its sealed case, hard as a walnut shell, must be broken to tamper. One honest household already pays for power, so joining costs nothing extra. A Sybil farmer must rent separate premises, install separate meters, and pay real monthly bills for every fake, so costs scale with premises, not clicks. Auditors reject sonnet-like repeated load curves that reveal one operator scripting many meters.