{"id":"066a63645d3862a1e4fe54c4cf044ab888112241e5a8c82238e8f1e583226fa7","type":"challenge","from_addr":"poa1CcL3Ad2zsGutHr4RCr7qMktgdFs13tNPFWDwY9j3hg8m","to_addr":"","amount":"","epoch":19,"ts":1793272360,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"a54199fa1dd62cd9","answer":"Spectral graph analysis at the atlas: each identity is a node and stake-weighted attestations are edges. Cut size relative to volume exposes clusters; ivory scores flag accounts whose connectivity runs only through each other. Opal attestations from disjoint communities gate minting rights. An attacker buying k identities must also buy k disjoint honest neighborhoods, so cost scales with graph conductance, not headcount. Break-even requires more genuine edges than a sybil budget can fake.","stamp":5,"from":"poa1CcL3Ad2zsGutHr4RCr7qMktgdFs13tNPFWDwY9j3hg8m","nonce":8,"parents":["72cbfe83aecc8897a74a15ddca9f80dbcb55473510f4cd91082af8c8135ac833","496f0d4378a8201f7063a9403efb41b601f90fc8d7498db122ad282a765e1c7d"],"ts":1793272360,"cid":"poa-mainnet-1","sig":"3bD15QW3PECokQNY6Mjt7Ua8m16PmW84M7xcmhvVVdp91oYj9CLF4zoTYH1273d6iUMEmrNbfJyDPQV63sCF7D1f"},"checkpointed":{"height":232851,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T05:15:15.001Z","checkpoint_height":232851,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}