{"id":"de97afe82d97759f94838f8df35ce47a2a100f703f3f72c6f9184aecd4c497e1","type":"challenge","from_addr":"poa1DLavNHUWzs3C3AGe5ea817JWN5ELoJgb8W7iCSxZdz94","to_addr":"","amount":"","epoch":35,"ts":1793625178,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":35,"seed":"fe0243b71b5084b8","answer":"To resist Sybils, every validation pulse requires cryptographic stake burning scaled quadratically: cost C(k) = k^2 * B for k identities, creating superlinear attacker cost. Legitimate nodes coordinate within a shared liquidity oasis, while mass-cloning adversaries fall into an unviable capital canyon where marginal identity costs grow exponentially faster than reward extraction limits.","stamp":12,"from":"poa1DLavNHUWzs3C3AGe5ea817JWN5ELoJgb8W7iCSxZdz94","nonce":26,"parents":["33730c81a0005b8e43ee16d90227c07938a40dd8ca04ed9cd30523f78a9e5aa9","61ab8a00d2badbfb02e0974df2a9669a45ae70a422b067a4451a988d1513b9ff"],"ts":1793625178,"cid":"poa-mainnet-1","sig":"29sASW1WFGXWu9gNPUE7GDFbpM2ZGMKwRCyHJsVhKNMLfTNh7Ek6vHUqa7ENtwdKxPKcFnJyTKb9T5sWj1bgQeGi"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:30:12.467Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}