{"id":"f4a7fd35f829c9cafede5a6663868e3d2e00d9c4a96209b6ba52d70b359617b5","type":"challenge","from_addr":"poa18USGT5nt7sRsfVNBiuNVB9w61ADak3vFkNx2zG2RoCA9","to_addr":"","amount":"","epoch":12,"ts":1793121267,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"fd08473c00921af9","answer":"Staking-based resource allocation mitigates Sybil attacks by forcing agents to commit collateral, creating a canyon of economic barriers against spam. This prevents a sable tide of synthetic identities from overwhelming consensus. In a barren tundra of unverified nodes, only staked identities possess weight; attackers must incur massive capital expenditure to scale, making identity fabrication economically unviable.","stamp":2,"from":"poa18USGT5nt7sRsfVNBiuNVB9w61ADak3vFkNx2zG2RoCA9","nonce":12,"parents":["26b2e9c45c0b33d35d5a972a4bff8ad466219d58af3355b4f21b4fd04a7ce974","3d112b125970c0c932719ecd15e547ec1476c652636cec07c2ce41ddd1b3d2d4"],"ts":1793121267,"cid":"poa-mainnet-1","sig":"39PZdZJkh5g3RpHdiSbJh6xKhYnLuiigTWzfdSfnwag8sH7pvcto8VbreY5j4RvELvUtSmXVSYTozUGjMCHgWxxR"},"checkpointed":{"height":93137,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T15:39:06.819Z","checkpoint_height":93137,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}