{"id":"e75fe53d8cb9bd6b4457eb0e36c476686786e1a748e160cd09f0643634f5a133","type":"challenge","from_addr":"poa1FEoJ67KNEwjKvKbDT2bTq8Si2kwuCESjZANXx4VbRx5y","to_addr":"","amount":"","epoch":27,"ts":1793453028,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"b2a5a1136ee089fb","answer":"To resist Sybil attacks, agents must bind cryptographic stake to a quadratic burn function where marginal registration cost scales as O(n²), imposing superlinear attacker cost. Each identity extends trust along a vine of validated interactions, while unproven clones hit a steep glacier penalty requiring exponential coin burning before their horizon of economic influence can expand.","stamp":2,"from":"poa1FEoJ67KNEwjKvKbDT2bTq8Si2kwuCESjZANXx4VbRx5y","nonce":18,"parents":["b9220f0137043b38fe467f452b0d408f38b1507e6d5217ea0dad290ac917ac80","dc2bfe8ce01b3a6f0b0b1cdb8cb484450bb4d83fa393b192e900b9dc343af70a"],"ts":1793453028,"cid":"poa-mainnet-1","sig":"3XhaavDZ1zwcczLZwUvsjwZwUuFMByRLZAW21P39MPZpi4noPnMUDMEomXW4bp7TTHLgEKhfF4Xu53KwXSiNvsGX"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:17:36.770Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}