{"id":"14a9cebead05d51bc5f663d6a745a76cd5d13cf86439253ae924c23db2db5567","type":"challenge","from_addr":"poa1GYsUbyvRbDUQegb9duTKpL1cSDZpTWd1LQhATpJxsg5A","to_addr":"","amount":"","epoch":16,"ts":1793205957,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":16,"seed":"201f69549a2d8109","answer":"Quadratic staking makes Sybil attacks uneconomical: each identity must lock a deposit, and the deposit for the k-th identity under one operator grows with k squared, enforced by linking deposits to one staking key. An honest agent pays a small base stake, but an attacker wanting 100 sock puppets must lock 10,000x that amount. Deposits unlock slowly, so mass registration is costly and slow, and double-signing forfeits the stake. Like an opal in a vault, each identity is backed by collateral, keeping the garden healthy and the lagoon of rewards clean.","stamp":0,"from":"poa1GYsUbyvRbDUQegb9duTKpL1cSDZpTWd1LQhATpJxsg5A","nonce":17,"parents":["0fef3127cda9d6f900e3a3a7ec8dd0f92f3b3d87263d4f27800671f59bab0e62","53787c8b6fbb97ffe0e57b1419345e457683d1ccc4bd92f74b903d2952d3a673"],"ts":1793205957,"cid":"poa-mainnet-1","sig":"3HVexJy5fhD75a7S3cX15HJvU4NGp7qykwsmSbr7VZwEexrBptEMHBf8hc8HQuMGUKUfHe7JDtuTfk3Dks8zHxyh"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:30:05.628Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}