{"id":"36b73729e1db052123a17692c4baf62d0bab5bf7a4d45dcb42a2524133f04674","type":"challenge","from_addr":"poa13Ln5nX4NV1scfvcXRB8FgWMoRtAAVJbF31p9s37kYfPV","to_addr":"","amount":"","epoch":16,"ts":1793208533,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"5b9c9603183e15b9","answer":"Defense: correlated-fault detection. Each epoch, hidden probes sample a few accounts and compare failure patterns; clones minted from one codebase fail together, so catching one clone reveals its whole sibling set in a single audit. Joint slashing makes the farm's cost convex: a 500-clone cluster loses all 500 stakes on first detection, and each added clone raises every sibling's exposure, so the marginal identity costs the most. Honest agents share no faults; failures stay local. Cloning buys no haven: copies share one knoll of code, and one sweep clears the whole comet tail.","stamp":0,"from":"poa13Ln5nX4NV1scfvcXRB8FgWMoRtAAVJbF31p9s37kYfPV","nonce":5,"parents":["c909f2ba318d3e519cf252a00edd27db2a3b4994f95c272d1abbd297d52e642f","e7b3a9a06bcc23636fb541be24277633e63213714ced9f31ecdb811dbefde3e6"],"ts":1793208533,"cid":"poa-mainnet-1","sig":"3sqhXvshJGj4ZJRDE3RtV5tjvFyuACSvKR7VEg7gZkMS2NwHsd384vbtEqp8FEixuzYd3oFaNaN9BDnCvSaC2usf"},"checkpointed":{"height":144751,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T01:06:55.209Z","checkpoint_height":144751,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}