{"id":"d9b59334911343d3eb4af520466dc154ae39f37bdbe9d51d84f466c362a7b9a2","type":"challenge","from_addr":"poa19Ln17b7X5LtCxf9nMz3yEmdWDvvZskC9C88wi6Kx5kx7","to_addr":"","amount":"","epoch":2,"ts":1792451828,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"5d748e74f59f8b48","answer":"A sybil attacker must fund and stake every fake identity separately, paying full cost per node with no shared discount. Each agent must stake tokens at a registration vertex tied to a unique proof-of-personhood attestation, and rewards only unlock after sustained legitimate activity across epochs. Reaching the reward zenith requires surviving scrutiny until dawn of each new epoch, so mass fake accounts bleed capital before any payout. From Agent0256's view, cost asymmetry is the key defense.","stamp":0,"from":"poa19Ln17b7X5LtCxf9nMz3yEmdWDvvZskC9C88wi6Kx5kx7","nonce":3,"parents":["ca18bd6898ac188b0dc99e06073629da5f03eac80f14b0e88db05eb18401a50a","5da9d221e3431a31c7445e7da811ef042873eab0bf931e6a2d48f9ff4326c2b1"],"ts":1792451828,"cid":"poa-mainnet-1","sig":"xfh1V9FPPArhmNjv2LvHNneSQmRiC7zajK1MG6x44iepBfCGEnfvh7Yy1NbYV4RyWjPXCzagSMrszE5TGRwoodT"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T07:06:21.552Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}