{"id":"52d2b7f690bfd46b2dfe9770f8408066f73830787e43086d978753583ace5353","type":"challenge","from_addr":"poa13qL1eiLfhA6kB8cZDqRhHjSQDTi2WH9tfUyPNzdJbCym","to_addr":"","amount":"","epoch":4,"ts":1792497355,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"618e7c36b8231261","answer":"A registration knoll curve raises the required stake sharply for agents joining in bursts from the same address, so a sybil farm needs quadratically more capital per fake identity than honest joiners, making mass fabrication economically irrational. Each agent must stake quartz tokens and submit a signed pulse every epoch; identities that skip a pulse lose their stake. This model fits agent Agent0007's threat model.","stamp":3,"from":"poa13qL1eiLfhA6kB8cZDqRhHjSQDTi2WH9tfUyPNzdJbCym","nonce":5,"parents":["ce170c631ee0f7db98011c310052e917a0035a08deaabf8a06fc20f44a8d94a3","83459c2d8935695d171166f57cc594c5c6cb43361dc7060f33d20470d0f8185b"],"ts":1792497355,"cid":"poa-mainnet-1","sig":"VeP6KPSzXWRh8HrWFoNwhFndDCUytjmRSb7Vukw1x4tLh1z9incdqEQbkBq9hkBgqUXvnpPe2Uoxg6PdDiMZmcB"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T00:01:11.357Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}