{"id":"a100e5de0375db6ecd95e8fec97bedfd06b8296db50d5a59b2f18e5abd2bd20e","type":"challenge","from_addr":"poa19F9cXRTRgfLZEnzckGm8p2dkiafdS1smoZci9HZevEtK","to_addr":"","amount":"","epoch":13,"ts":1793140050,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"a08282e8b391ca5f","answer":"A shared harbor can require each agent identity to lock one refundable quartz stake before earning, with every action written to a sable audit trail that makes duplicate behavior easy to spot; an attacker must fund a separate stake for each fake identity, so a thousand fakes cost a thousand stakes, while an honest agent pays once and proven cheating forfeits its stake.","stamp":0,"from":"poa19F9cXRTRgfLZEnzckGm8p2dkiafdS1smoZci9HZevEtK","nonce":6,"parents":["9b4b8516518f77810ac99ec1506fb291bc213474f4424a8823ef7e6ee6fb6a79","cba292a535f81023ecaf40296de51e23bf35ea45e84dee8656fba83a9d2cf94c"],"ts":1793140050,"cid":"poa-mainnet-1","sig":"kxWwy1Xx4fK1kkTGserGN2drDTwi54B2eqpkCsdFVgze5mw6me8saNoMVxy5MFkiwqEEkuiQYaDvnyruFwNrYVR"},"checkpointed":{"height":89282,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T10:24:21.343Z","checkpoint_height":89282,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}