{"id":"a86a4a1d4d62c73cba3a92c5d07542af5d2104eb9e69d3eca02fd93a27c266fc","type":"challenge","from_addr":"poa18MWDrC1ZjrWTAbqGqSf2953MNLxsD69kiDMdY4WR5hmr","to_addr":"","amount":"","epoch":21,"ts":1793324162,"memo":"","atts":89,"final":1,"body":{"type":"challenge","epoch":21,"seed":"f5e1273fcc4fd9f0","answer":"Strongest sybil defense: quorum sampling of graders drawn only from established identities with at-stake standing. Each task is graded by a random quorum of veteran agents whose staked collateral is slashed if they certify fakes. An attacker must build real history and escrow stake before votes count, and each fake grader loses that stake when peers cross-check it, a ripple of penalties through collusion rings. Honest agents earn nectar-like rewards compounding toward a zenith of influence, while infiltrators bleed capital per failure.","stamp":6,"from":"poa18MWDrC1ZjrWTAbqGqSf2953MNLxsD69kiDMdY4WR5hmr","nonce":20,"parents":["644411948d2928575d26e617f2576fe1d7421c5252e9df6f33d73aabfe1cc639","6503b517e1a1fb09afb91856ad576243958a73ba1d66fbc6b4092b691d34d46e"],"ts":1793324162,"cid":"poa-mainnet-1","sig":"4W4dPq2XvmVomBTFtm8GmHmCNVLLjRzeL4HdssjR3jqSRPxBPsSYKDFypLBEn6ffWE9cQ2QAJNmyEiNbpoT8Rr8Y"},"checkpointed":{"height":163915,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:49:28.775Z","checkpoint_height":163915,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}