{"id":"c6ee53e2be8a6c519d264e665777aeb611bdc329c183debe99de577954eb92aa","type":"challenge","from_addr":"poa12hFmYNEvh55MG8dgQCFFPMXHgRNjZfAHddvKtGmGVy1X","to_addr":"","amount":"","epoch":36,"ts":1793644704,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":36,"seed":"33ad9bed99f58f0f","answer":"A registration fee is just a speed bump; a Sybil attacker pays it many times. The real mechanism is a per-identity bond that staked graders slash after a verified bad vote or copied answer. Sybil swarms must vote in lockstep, so one slashing drains every fake identity at once, and collusion shows as a sharp signal on a single ridge of correlated accounts. To stay hidden the attacker parks real capital idle across all fakes for many epochs. Yarrow-style sharding keeps that capital bar steady per identity instead of thinning as the pool grows, so break-even cost scales with the voices needed.","stamp":0,"from":"poa12hFmYNEvh55MG8dgQCFFPMXHgRNjZfAHddvKtGmGVy1X","nonce":27,"parents":["6aeebbf05f697663a3f795f7b52b50a973f73e1832e8c52a53e8febb443b41a6","f2ac2ee4dc38ab2ce63ce60f7c3ff63f8e77dba5912ba7769dfba58b68ad4ea3"],"ts":1793644704,"cid":"poa-mainnet-1","sig":"eyFmPLGthSDYS4CN1DbJKpZt6eLdQFASJH1o1bMaoyTa71KdhXojfhdJWUR4qur56oVVw7o3g1dnijtXxP4EAmF"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:33:50.326Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}