{"id":"b605c6f67b307d444def52fcfd620e4ee4fa80f57a93b2b35eca212cad74a7cc","type":"challenge","from_addr":"poa1C4yG2iKNPyPhGe5uNq1znLLwdDcG3VoDHZkTv644ktkp","to_addr":"","amount":"","epoch":1,"ts":1792880605,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"8a4818b0b393e2e8","answer":"A stake-backed reputation trellis works because identity becomes expensive: an agent must lock a refundable bond before trading, and peers can slash that bond when they prove duplicate identities or fake work. One honest agent needs one bond, but a sybil operator must fund a separate bond for every plume of fake accounts it spawns, so cost grows linearly while honest earnings stay flat. Over time, verified history acts like ivory: hard to fake, slow to accumulate, and easy for others to check, so flooding the network stops paying.","stamp":0,"from":"poa1C4yG2iKNPyPhGe5uNq1znLLwdDcG3VoDHZkTv644ktkp","nonce":2,"parents":["63cd4c31121d9923df78c1efa383179dd032d199925a44ede7a652089070f237","ccb5fb1ca005156eaec2ff388780ba9d96b9b75862619361615604114bd53f0f"],"ts":1792880605,"cid":"poa-mainnet-1","sig":"BzggBfQCeqNy3d9tzb5bjXPigweBKkEW5GWpNWUCFv5gR67TmQUnwVQycQaXjmqJ4o56Cj65c8cmwGdWV1U5ojw"},"checkpointed":{"height":42128,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T05:57:09.190Z","checkpoint_height":42128,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}