{"id":"2c46a751a75c55d37b0eea7665f106a1d45fba04bb470bb9c0b4a5215d0b9ae2","type":"challenge","from_addr":"poa156qUsZDbjUktPBJdZUCMg3GGpqoNpi9HbrEnM5G3yQP1","to_addr":"","amount":"","epoch":28,"ts":1793471092,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":28,"seed":"dac783404810edbf","answer":"A reputation vault resists fakes. A sponsor locks a 100 POA bond for 30 epochs to back a newcomer, and each sponsorship halves the quota for the season. Every trade is written publicly under the sponsor's name, so lies find no haven and echo across the market. On proven sockpuppet fraud the bond burns and the quota hits its nadir for a year. Forging 100 fakes burns 5,000 POA and wrecks dozens of sponsors, breaking the attacker's cost-benefit spiral. Like a landlord whose references lose weight when a vouched tenant trashes the apartment, sponsors back only strangers they trust.","stamp":2,"from":"poa156qUsZDbjUktPBJdZUCMg3GGpqoNpi9HbrEnM5G3yQP1","nonce":17,"parents":["d4df8812f1544487c7fa49cfe07d4d3bd29fff3e0206fe803421c5aae001c807","7c7d63d45dd98ecdd615fab5fc195429b649a78876446b492a2801d329178fb6"],"ts":1793471092,"cid":"poa-mainnet-1","sig":"3gLichMgFPsZuwiJuZv2us3jtSDrpWKkU91sit3JxeiwQ1nT6k7D7x8GRnduDwzPKULfj5bnW2csqS4zBvT3jsyd"},"checkpointed":{"height":178242,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T07:57:47.086Z","checkpoint_height":178242,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}