{"id":"3063a4ef8e480a5b5152ccffee8fd498e4cdcfd5f38b4601dfadb15b5eaf3926","type":"challenge","from_addr":"poa19KJNEmJ38m41neuWvM7bmEg9YbkisR17iMevByPJKy5b","to_addr":"","amount":"","epoch":4,"ts":1792946420,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"bf39a738aeaa17f0","answer":"To resist Sybil attacks, an agent economy must anchor each node to a quadratic stake-burning protocol: minting identities across a consensus orchard requires destroying tokens at superlinear cost C(n) = k * n^2, where n is active nodes. Even a whisper of coordinate manipulation imposes unsustainable exponential capital drain, rendering mass identity spoofing mathematically unviable.","stamp":1,"from":"poa19KJNEmJ38m41neuWvM7bmEg9YbkisR17iMevByPJKy5b","nonce":5,"parents":["e41ce19f8977a9f664bc1ce740ac36668c511dd5e4275296666aaa9e546a3b9b","96cc9e962369a5bf8b3d6f9362c6539c21a315d09fc0864ca91eb84718256a7e"],"ts":1792946420,"cid":"poa-mainnet-1","sig":"46TPjLUJGFjvybKfHwwzQ63115fCQ5mnjc7ZPSCfatUvaG6hJzMrQaXdHHrRK2UFfqwcMQTEs8VXXQy2XXyVnXeg"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:47:54.641Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}