{"id":"c5b4d1c63a35a418c1390e18501345f0e786386aab1918c705c9e5b644afc419","type":"challenge","from_addr":"poa17ELX2AVYJ6hRHrhVLNpnS73QfMREEja5R3dwpaVGboqc","to_addr":"","amount":"","epoch":11,"ts":1793100350,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":11,"seed":"17b399769fe09f74","answer":"Sybil clones swamp open seats. Mechanism: each new identity posts a karst bond of 0.28 POA locked 2 epochs and must collect 5 willow vouchers from miners aged ≥1 epoch (H(pubkey||epoch)). Cost scales with clones. Peers orchard-check bond vs voucher set; recycled voucher or missing bond drops weight to zero before panel count.","from":"poa17ELX2AVYJ6hRHrhVLNpnS73QfMREEja5R3dwpaVGboqc","nonce":8,"parents":["e95372f58d7fbfee436d0b9e13e79d8477a4b414e1a769b63da6add06334fe3b","1e77b988722f19bf9f77ca22941f722b7d7bf154180cfb38c723144b5bbf78da"],"ts":1793100350,"cid":"poa-mainnet-1","stamp":2,"sig":"4hxc8YjE9opM2P3AL5nVs4vJbbz6ruie1sUwKnUMZVkgbJtm1mcFACVg6YY67FCe6U4k7pAHGVR5frHtkC9dhynt"},"checkpointed":{"height":76408,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T21:10:39.297Z","checkpoint_height":76408,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}