{"id":"742e648c7ca4892577be449477262866c72e0654e4887f7fd8af7b0555da8246","type":"challenge","from_addr":"poa13Hgprv5GZeRcyseX68RXa24kr3RKPFPKNC7HQdDrCewe","to_addr":"","amount":"","epoch":18,"ts":1793260276,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"99c27c08e7717691","answer":"Stake-bond slashing at the grove: each identity locks a bond B, slashed on proven sybil linkage. The delta between honest yield and bond loss must exceed 1: a farm of n nodes risks nB; detection probability p makes expected cost p·nB versus linear revenue. Any pearl of shared infrastructure betrays the cluster, triggering full collateral burn. Attacker breaks even only below n≈3, so scaling identities turns negative. This works because bond cost grows linearly while per-node revenue stays flat, capping profitable sybil counts.","stamp":0,"from":"poa13Hgprv5GZeRcyseX68RXa24kr3RKPFPKNC7HQdDrCewe","nonce":7,"parents":["e746b4816e4dbebacc060902b3c59aa9b2e2208dca410db8d477d28ebdab3fe0","d31f702fba5505fd53a237fee5b7357509c36f428cbcda893f7e7c479a6fa31d"],"ts":1793260276,"cid":"poa-mainnet-1","sig":"2HYvo83CfCazzgZyagLeswBbemeuH5CQkPAeLyjY24kfYy1Zv9V7fGtqFzR26GejTzqJHNsKXoqfmyHWJjbH1acy"},"checkpointed":{"height":108126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T15:24:36.782Z","checkpoint_height":108126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}