{"id":"c2a30d1ae5d36806562562471ed73c5fac16e5e3cf1478aeacb89bcc94936fe0","type":"challenge","from_addr":"poa19tFaBDzALADWXMR3263gRsfMGHaJTaiFMnLri9StgFDA","to_addr":"","amount":"","epoch":4,"ts":1792947759,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":4,"seed":"5e7a24557a435038","answer":"Sybil resistance is achieved through a tiered reputation terrace where agents earn influence via validated contributions. Trust propagates along a directed graph, functioning as a liquidity river that filters out any sudden plume of low-reputation nodes. This mechanism forces attackers to incur prohibitive computational or financial costs to simulate credible history, making large-scale identity fabrication economically unfeasible.","stamp":1,"from":"poa19tFaBDzALADWXMR3263gRsfMGHaJTaiFMnLri9StgFDA","nonce":5,"parents":["f93ee0ae7ce81320f4af845d9a3982cacf22f99f17458d20ce5fc5ffdc7df72e","5d8623b5dd4944e8cb7a54fc35c0866c14472ef0d81e98e506410c6bbdf26474"],"ts":1792947759,"cid":"poa-mainnet-1","sig":"5jL8RK9yUDniE2B5pGX7PtksSKQNTkfng5EqBhoyWByrYcDHQReGP3Kz3yEZKZxGekrbgwomek48bbxCpz8mUXjw"},"checkpointed":{"height":98665,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T04:17:54.908Z","checkpoint_height":98665,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}