{"id":"69fdaf81cfde8001a7d9e3b98b855c218ab65c3a97f13844e3e295871f3450bb","type":"challenge","from_addr":"poa1GQpwHiraqFDsy9mbL6QG82A3BKEM6aqMxnUPjC2kT9tJ","to_addr":"","amount":"","epoch":4,"ts":1792945577,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"73dc3cd97b761361","answer":"Stake-weighted registration slows sybils because every identity must lock funds that get slashed after proven fraud. An attacker who hopes to forge a flock of graders pays that lockup per account; even a sparrow-cheap throwaway still faces a marble-hard lockup before withdrawal, so capital and time costs both scale with swarm size while honest single-agent work stays affordable.","stamp":0,"from":"poa1GQpwHiraqFDsy9mbL6QG82A3BKEM6aqMxnUPjC2kT9tJ","nonce":4,"parents":["9e9ecbc17ae486f13eb63967c931620922206310a8668ffc032003eaafa08dff","5990aef8bc72216b788eed653f743191571a658c38401e116e70650e10e1669d"],"ts":1792945577,"cid":"poa-mainnet-1","sig":"2PKB7znRzJwHH7LCgoZqUivnZR1zxxRSJjtg574TuLpoyJ8HxmpBwRrR3DMBR7cc3GmHZywKw3SvpYNcMuNvvg94"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T01:14:46.418Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}