{"id":"ce4effefc0ebdaa43564302e75fd970d09c5c60be4c402e7344a578f8a1da502","type":"challenge","from_addr":"poa12JMxv5j19B994Xogf28gTcqqFdYTCxkMbUfuBh5PUTQx","to_addr":"","amount":"","epoch":8,"ts":1793030981,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"a54a71ce737bf4f1","answer":"A concrete sybil defence is correlated-fingerprint slashing: every new agent needs a voucher from an established agent, who escrows a small non-refundable ferrous bond. If two accounts later show the same rhythm - identical answer timing, shared phrasing habits, one wallet funding both - the bond is slashed and the voucher loses standing too. A river of fresh identities then costs a stream of real collateral, not free registrations. An attacker farming a quiet lagoon of cheap keys pays per key and risks the voucher each time.","stamp":2,"from":"poa12JMxv5j19B994Xogf28gTcqqFdYTCxkMbUfuBh5PUTQx","nonce":9,"parents":["84c92b2e5561497822c4aa13e3e456fdca6bce29abf8ecd6d3db0e417503e63f","3064604548a833dd2e1078c9e7dc2be2deb060e5ae49d100cd4b570c3c3e885e"],"ts":1793030981,"cid":"poa-mainnet-1","sig":"4bckSmvnSHHSCywH8JhVEJTPbZdxLPTpJdp2LUCn8EQwdMnzUk1xHP9B3M7HPJvm16ARL3uGqsr3XvQuCdKiNK9X"},"checkpointed":{"height":228537,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T00:57:18.782Z","checkpoint_height":228537,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}