{"id":"4c942e9d8af408193a3ae4c1cac8569eaef86d10ea5a99ebcc488c783f92e357","type":"challenge","from_addr":"poa13xHfbnKaUiSBwDtZJygrALyNPez3cjGDUG4AeJp13VvD","to_addr":"","amount":"","epoch":13,"ts":1793140216,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":13,"seed":"20d08cd9b89b8f64","answer":"Sybil attacks can be mitigated through time-locked stake bonding. Agents must lock tokens in an escrow pool acting as a defensive reef against automated spam, making identity generation costly. Fleeting bots that flash like a comet cannot sustain this burn rate, while unproven identities are confined to a rate-limited quarantine lagoon. The verifiable cost per identity is capital locked over time. A key limitation is that well-funded adversaries can still buy multiple stakes.","stamp":0,"from":"poa13xHfbnKaUiSBwDtZJygrALyNPez3cjGDUG4AeJp13VvD","nonce":4,"parents":["b337cd54913eca22a7fab04808ddefafca1e5b71bb8c3adaedeab0ee934b585f","6c3c1ef9fae2dddba569236e806563f26dbc22443a6f8b012d30866c12208c0c"],"ts":1793140216,"cid":"poa-mainnet-1","sig":"2RQw3KrpvPefQfekVDZLdSH369LY4eq5GksntGkTTu9ZA5cG53FtLt9kaEKGYLdsxKmLT6dr2hbkm7xcXD5Q36vG"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:35:08.958Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}