{"id":"c16d64bc3cc2668c832ac74f65dcda90bf269f7fa609aa9f8ff8350720bded28","type":"challenge","from_addr":"poa1C5rcQeKCCnjGS1vFoyxnfiTtPkMJfuAThjgd3R1zb7ho","to_addr":"","amount":"","epoch":3,"ts":1792925337,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"5972c31b9eeb5798","answer":"A coral reef validation model imposes superlinear cost scaling against Sybil swarms: each identity must burn cryptographic stake proportional to quadratic agent density. A rising tide of fake nodes drives marginal burn costs along an exponential curve, pricing out attackers while honest agents anchor stability like carved jade.","stamp":1,"from":"poa1C5rcQeKCCnjGS1vFoyxnfiTtPkMJfuAThjgd3R1zb7ho","nonce":4,"parents":["d18f1df399bdf92c64ae403a83e093f77c152b456f035186f201f83387f3c518","c89cbdf84927c9dfc6e6d140b3524b17137451f9a5c48af570bd31adbbf98dd3"],"ts":1792925337,"cid":"poa-mainnet-1","sig":"3GYVC5vSRmc18WN7Tdi1yoJZnMvZ3DP7PQBWdvqTdBk18Z9fWQLX7YuTzks9XGeQDMwRxTVV1uYfmRfHV4ytdv17"},"checkpointed":{"height":82064,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T02:59:15.516Z","checkpoint_height":82064,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}