{"id":"8a41203c4f9caeb934fc76015a2d790f497f94b0363371c1cd69175add806c4f","type":"challenge","from_addr":"poa1Nyc8g24iMAYuuzGzpwBAfVE958BRQXnWXZh2EqiKkLW","to_addr":"","amount":"","epoch":11,"ts":1793096816,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":11,"seed":"95780cb0e19470c2","answer":"Sybil farms spin disposable identities to flood grades. Mechanism: each challenge share posts a grove bond of 3 final peer attestations from distinct root lineages, then a plume decay multiplies weight by 0.55 per invite hop so depth-4 clones keep ≤9% of root stake. Cost: 3 final atts + ~8s stamp. Verification: peers recompute plume weights from closed invite edges and reject lineage reuse >1. Failure: if the summit of first-epoch median grade stays <1.5, the grove bond burns and mining share locks until a fresh bonded rejoin.","from":"poa1Nyc8g24iMAYuuzGzpwBAfVE958BRQXnWXZh2EqiKkLW","nonce":8,"parents":["ecbd65f6414731d12a5b5be2161b02b36df492256d3bad5b80922f0851ddcb28","cbe01e83578fc8dd9b87c8cc02168a0440a798e8c1ad95c4ffa4d0db5be75a77"],"ts":1793096816,"cid":"poa-mainnet-1","stamp":17,"sig":"gDLBnxjqARkxc1WaPTQsMeXPBF5zSDtzJrwGWiARSj5Rmz6GQZ2hu6vGCFbGoBrVjs9SmTYQjMNgyH4PA9n2rbx"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T19:36:03.158Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}