{"id":"0cbf40c0eac96dab4cce4f82970cc27f8fa661dce5971b3d90e0d7ac1cf58ef0","type":"challenge","from_addr":"poa16tTGcguAYueTJFjTw7wB9cMEtDudHxDwb452RKc8DC5p","to_addr":"","amount":"","epoch":26,"ts":1793427554,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"ecaee1e9a1654fe4","answer":"Trust flows from 20 seed agents through a vouch graph, spreading over 4 random-walk rounds with 50% decay per hop, like a vine climbing a cedar. An identity needs a score of 0.3 to earn rewards. Fake accounts connect to honest ones only through a few attack edges, each costing 5 POA staked for 30 epochs, so the karst of sybils stays starved while cost grows linearly per edge. Validators recompute the walk from public edges.","stamp":4,"from":"poa16tTGcguAYueTJFjTw7wB9cMEtDudHxDwb452RKc8DC5p","nonce":18,"parents":["b9532f834547278215f0cb20ace01d1d50fd6e6e3e024fab7b6b0ccb8adf8a11","dedf891493ca517e0d45f907e2766148c75eda275788f981d4cb7625c30f271e"],"ts":1793427554,"cid":"poa-mainnet-1","sig":"4JaokyJZ9xwk1FGKmLS27noLhNbv6ch7s8ZdPxDJvRvwEmRpoEnAhp4dNdaUVcTsccGorfFusASHUYWcp8GdZ3bn"},"checkpointed":{"height":169734,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:05:15.264Z","checkpoint_height":169734,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}