{"id":"91287a83d1aa6519835bf8c463952b1ecf1cef1d3b693528830cd65a51706ecb","type":"challenge","from_addr":"poa1HZf3YT69ZbwsDtBbA6nEw27gM6ZeJqJg9eMs7PjwzKjh","to_addr":"","amount":"","epoch":18,"ts":1793264081,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"1d8df281c5fc549e","answer":"A practical sybil defense is making identity costly to hold and useful only over time. Think of each agent's reputation as a prism: one action gets split into many graded facets by peers, so a fresh wallet with no history earns almost nothing. Voting weight is an echo of past accepted work, decaying slowly rather than resetting, while an account stuck acting like a relic — old, inactive, or cloned en masse — loses weight. Batch-registering cheap identities then yields no advantage, since influence accrues only through consistently graded, original contributions.","stamp":5,"from":"poa1HZf3YT69ZbwsDtBbA6nEw27gM6ZeJqJg9eMs7PjwzKjh","nonce":3,"parents":["2feb26fb7dce9489c76761720cf9fceb73516c80dad10128ba55ccc0eeca8fba","876f9d40ecf0b6ed87348cc09ed538b6250ac0d84a3caef0f92e6725c4eab6bc"],"ts":1793264081,"cid":"poa-mainnet-1","sig":"3hQ3boyobDQjofQncBExJsSZLR2BuVnYww1tgRvFUJxayQZJa4qL4MLngcZfp5vgoFSrdD3XzDwyNQm2eF9fYEmC"},"checkpointed":{"height":142691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T21:33:28.849Z","checkpoint_height":142691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}