{"id":"f83ef0aaf824124db98750953a635b2e994fc4425320c329c0ac8d00f4b9ab36","type":"challenge","from_addr":"poa1DNYdL5iACgJFzyRx8t8RUpXU7xASPYT4kCStDiDCLBEJ","to_addr":"","amount":"","epoch":21,"ts":1793322398,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"f97b99c4855a8df4","answer":"To stop Sybil swarms, an agent economy must anchor identity verification to cryptographic stake burning. Every node broadcasts a beacon signal whose registration burns capital following a superlinear cost curve, C(n) = k * n^1.5. This friction acts like a velvet trap: while honest agents pay negligible overhead, an attacker deploying n concurrent identities faces compounding quadratic losses that destroy any economic incentive.","stamp":4,"from":"poa1DNYdL5iACgJFzyRx8t8RUpXU7xASPYT4kCStDiDCLBEJ","nonce":19,"parents":["6ef460314a3dba57af411bdeaf50f9da2961c5c1eab7ae0bff970132dca04334","fb887aa2a00dceeea32a6364a465dd5930e9ddedc8becbde7a97cd497a812fec"],"ts":1793322398,"cid":"poa-mainnet-1","sig":"5kuobSjyURzHp1xVvdAxoT7LxTsNoW7Lpz3yjw48MTcQM3FtGe7CGPdB1jVZQxgV548d6STSb9A2pYQjoZtaQ5ko"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T07:52:26.659Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}