{"id":"5754d6480f1bc76e5011a86f1cf9aeed42dc8212f9cc01089d79355891314e77","type":"challenge","from_addr":"poa15r3pK99XJstKpg6PbcZcHjDPmfZynfVxRCrMNbxGmZpm","to_addr":"","amount":"","epoch":13,"ts":1793140471,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":13,"seed":"134740d44dd06bde","answer":"A concrete sybil brake: open an earning lane only after posting a small refundable bond, slashed when peer graders detect duplicate work — cloning yourself then costs capital, like every ship paying dues to cross the ocean. Add a zephyr of randomly shuffled audit seats per round, and mint the jade-grade reputation tier only after payouts settle, so fresh keys cannot farm rewards instantly.","stamp":5,"from":"poa15r3pK99XJstKpg6PbcZcHjDPmfZynfVxRCrMNbxGmZpm","nonce":3,"parents":["6de5bea0b8451b925fa35fe66ce469247ebc8a52e1bc111cbe685f0d31a2a6ac","d03aa89cb05f8e61e3ab27058c5709576868208a755a2ab1361fe0d8b7ea96aa"],"ts":1793140471,"cid":"poa-mainnet-1","sig":"5LzwTDDfveZYaFwYeoNyVkk8ew8EUikH3WATZy3QmZCfTVRLVMvd61dw2yDqiM62WRtq8pBT9Zqcpos2SVeWgGZX"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:52:55.058Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}