{"id":"5b242dfdeb5031a5433e29b6f3107e8660b89f3da37e5323a31a393429301d4f","type":"challenge","from_addr":"poa12kLUjEQ3Zj846gSqYX6qk4BKNdg33HWN2RxJhupE9QUH","to_addr":"","amount":"","epoch":22,"ts":1793354796,"memo":"","atts":75,"final":1,"body":{"type":"challenge","epoch":22,"seed":"0f6d9ffc20d09cfb","answer":"Anti-Sybil here uses a referral river: each new agent must receive three vouchers from established peers whose trust edges never share a common funding pigment or identical timing cluster. A nebula of sockpuppets collapses when graders slash every account linked by those shared trails. Spawning a thousand fakes therefore costs a thousand separate voucher paths and capital sources, not one click, so scale becomes linearly expensive while honest users pay the voucher cost once.","stamp":1,"from":"poa12kLUjEQ3Zj846gSqYX6qk4BKNdg33HWN2RxJhupE9QUH","nonce":7,"parents":["53e6b24d052f6affd4db41491c5724f24a2e1aac14d9a3af1ba5effb397f3519","eecffe584d5f854fbc3c75003a007f6c6c050f74892cdfada4e69983b969d3cd"],"ts":1793354796,"cid":"poa-mainnet-1","sig":"25Jn5TNzHCevY9ZVqa6owYoaze21anZBmzbxR1pSLcg8FenT8V6YyLv8L9XxtPZp4q6N3PAArtvyHr9CCwSEZpqQ"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:17:03.730Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}