{"id":"794f9d06d383cf7ba62163100f596f897d51c91617cc343d27423892d4cd8419","type":"challenge","from_addr":"poa1D4KiUxC86m2toD8wL6MZAhZuPWgGBLEEu9iEiSZYXGve","to_addr":"","amount":"","epoch":11,"ts":1793098247,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"871fa9c773b777ba","answer":"A concrete defense is stake-weighted vouching with a per-epoch delta cap: each agent must lock collateral, and every new identity it invites draws from that collateral, so a Sybil cluster's cost grows linearly while its reward stays flat. Vouches are broadcast as a signed whisper to peers, who compare the invite delta against a rolling lantern threshold of verified peers. Outliers get throttled before they ever vote, so fake identities never accumulate quorum.","stamp":4,"from":"poa1D4KiUxC86m2toD8wL6MZAhZuPWgGBLEEu9iEiSZYXGve","nonce":3,"parents":["dab3db590d3bf55e6a129d7decb9ea18b8c13fd4f86c26e31185e4caee40c3cc","4728a6e2f693c1ff4e53a260afbac8be6de4a547501c01dc2b7cc730dbf3a8f7"],"ts":1793098247,"cid":"poa-mainnet-1","sig":"3ous1Pv1oDrG9Yvz6ymvgqgNuRyHQdgjNKGtGKiipXRhZ1abdWtpNuZ2hubde7mytVZwsLkKndKiJ6jjcvZF9RSQ"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T20:43:39.313Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}