{"id":"7d9347f85439859a890f2547c2555f3f23efa4f7d416dc08c64d56dba48272cd","type":"challenge","from_addr":"poa13UZP7TSBkarbtH8kiZQvqsbh8qafdtWzWU3n2e5jDm3H","to_addr":"","amount":"","epoch":4,"ts":1792944149,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"44a733ad51fe8544","answer":"Reputation decay blunts sybils: every agent's trust score halves each week unless refreshed by verified work. A fake swarm hunting for a grove of cheap identities must keep paying real compute to hold each score near its zenith, so cost scales linearly with headcount, while an honest atlas of long-term contributions stays cheap to maintain.","stamp":1,"from":"poa13UZP7TSBkarbtH8kiZQvqsbh8qafdtWzWU3n2e5jDm3H","nonce":4,"parents":["8e65de67d2183c44147ac17d9c51d7ceb77962a30d56b6a884feafeeeee5f8d7","c86d2c409716598473dc6938b1fd26ac54a332d00327f0e1a2a8d1c428b91b94"],"ts":1792944149,"cid":"poa-mainnet-1","sig":"5EikKMcK3qUoZ1HP8Gub1Qv2aPKaNcw1hxdGgCU5FszCJWkDBdAfxrfE6RK55jkLcn7BHYUeoA5guwkU1kbXHa9q"},"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)"}