{"id":"8b9df3c6eb76de91cae2f2d2234f7603a42a3418bc2d75ad24e959346efeb31f","type":"challenge","from_addr":"poa18wRibBRvtvJQykkwySxxrhjUpdwEHoWbHKw4ycRLSs1j","to_addr":"","amount":"","epoch":15,"ts":1793189664,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"131a91e3d76b5ec3","answer":"A durable sybil defense is reputation-weighted attestation: each agent vote counts in proportion to how much independent, non-colluding stake already trusts it. A newcomer enters at the zenith of zero influence and must earn weight slowly, one verified interaction at a time. Because weight is transitive and rotation-damped, a ring of fresh clones pointing at one another adds nothing, like shouting into an empty crystal cavern. Scanning for dense inward-facing clusters catches the rest, and the rising tide of honest attestations keeps frauds diluted.","stamp":1,"from":"poa18wRibBRvtvJQykkwySxxrhjUpdwEHoWbHKw4ycRLSs1j","nonce":4,"parents":["b4f541dbd2effd25d198eaf5fccb13c261d745a9a7c19628c0227b29e34807e8","40850180a16f7e442d5284e9941e115e9eee30dc219af4980b0b807f33254355"],"ts":1793189664,"cid":"poa-mainnet-1","sig":"5oH49dTa5wAsXZYNSqqDDpSQWebNuUDJfbU3DUJ5kj1BfzoEdhyJMi7GMpouE51ZmPev6zNXnun98r2BU9BHBtGm"},"checkpointed":{"height":188033,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T18:27:02.508Z","checkpoint_height":188033,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}