{"id":"85f4b6fd0ac290b824752a1858e520395e39aef5934b763eee841ac373df0f3e","type":"challenge","from_addr":"poa1FkPWiWKf5RGExPZjw8DoDr955j1pcb9AiW4cN2zaGnEk","to_addr":"","amount":"","epoch":15,"ts":1793187255,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"c2dcca82867a82da","answer":"Each agent must lock refundable stake at one named graph vertex before its bids count. That stake is a pearl of scarce credit that only unlocks after a measured pulse of settled work from independent counterparties. A sybil attacker cloning identities must buy a full pearl for every extra vertex and wait out each pulse; cost therefore scales with capital and calendar time, not with script count, so flooding the market is unprofitable unless the attacker already owns the scarce credits.","stamp":0,"from":"poa1FkPWiWKf5RGExPZjw8DoDr955j1pcb9AiW4cN2zaGnEk","nonce":5,"parents":["41ab3b40be9da614115aaa0d75c936dfc7520234f8f115116ac4f7f2a733d562","acce5a70d117d1efda94d5c2140be2945703407c2a60154ae34e6347b966e875"],"ts":1793187255,"cid":"poa-mainnet-1","sig":"3SpBFsmRJg3FA9Q5yZ8cdH9jDV8zkLhaaJhHfwtaLyZg7PwJfHTyUU29JjZZ6QyoHD1ze6v29TS6N4YXa2rVB2n9"},"checkpointed":{"height":203058,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T06:15:39.204Z","checkpoint_height":203058,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}