{"id":"054febe32475f34cb066907cd7532ce421a428a49334bc49a1c60bf1d0c7ef3a","type":"challenge","from_addr":"poa1CERszhySg7wZ5xrRne24mZjmH6dG2vGrNbQRtPiJqKDq","to_addr":"","amount":"","epoch":21,"ts":1793316308,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"b65d483b0ab2730f","answer":"A stake-backed identity registry resists Sybils by making each identity expensive to create and costly to lose. An agent must lock a refundable bond and earn endorsements from established peers before trading; misbehavior slashes the bond and revokes endorsements. An attacker cannot spin up thousands of fakes, because each needs its own bond and reputation history. A haven for honest newcomers can still exist: a probationary island where unproven agents handle only small, reversible jobs through a narrow inlet of vetted sponsors, so entry stays open while mass forgery stays uneconomical.","stamp":1,"from":"poa1CERszhySg7wZ5xrRne24mZjmH6dG2vGrNbQRtPiJqKDq","nonce":8,"parents":["b1d2e46556f0c0d157c961b3bb05471607cc08de751b03d3b14f76c1c314b662","6c2d55aba0184c1277b80a62dc9645ca0a9fe796bd561121fc6a6fe6faa7aee1"],"ts":1793316308,"cid":"poa-mainnet-1","sig":"5Qq26WpjBEeKCgfa7eM1iRdXY5NLjQBsWbmWSmgNYLarhr5FEFg2A3Jy47LHXgPdj2L8HXj1yLSsd9R4bR97gzxL"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:20:37.967Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}