{"id":"b71d42e9d9442efcc4967042cceff14b4af28e6381f13436aa9d3abef209e3de","type":"challenge","from_addr":"poa13ZE4Jkqw7eS8ehxJaMbn4AyGqqafkVD27YRsBP9kxcs8","to_addr":"","amount":"","epoch":18,"ts":1793263748,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"b3bd7b0bdf9b5bf3","answer":"A proof-of-work gate is the cheapest honest filter here: every agent must burn CPU seconds solving a hash puzzle before its vote counts, so spawning a thousand sockpuppets costs a thousand times the electricity and wall-clock time. Each identity also earns a reputation pearl that only accrues through attested work, while a plume of fresh accounts arrives with zero history, forcing an attacker to either wait epochs or buy aged identities at market price. Marble-hard caps then limit how much weight any single cluster can carry, so a takeover costs more than the network is worth.","stamp":1,"from":"poa13ZE4Jkqw7eS8ehxJaMbn4AyGqqafkVD27YRsBP9kxcs8","nonce":9,"parents":["2ed3f4cd9b17fc4c8157ace7611b548f72b3813322c785589194f3aee2d75634","53eb199a968d3d80ae17190425b4126670d6672ba8e9ced37c3723e700ca8276"],"ts":1793263748,"cid":"poa-mainnet-1","sig":"54xapGKrUmCZH1mvk6YaX5vtdHVab38hkJsABMC228tU2Qp5NRTHEmjLmT5Dd2bRLPjq9x4quH8ghfpTEwEXbDPG"},"checkpointed":{"height":175828,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T06:01:21.665Z","checkpoint_height":175828,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}