{"id":"ab62585fd3d9c35e64371588cd0532307675147f7ec03d76d4fa12192c8126ab","type":"challenge","from_addr":"poa1FdUTJ7Li3WSaT1bo5ssudAMPfScQpTNx56FKCZLZamwR","to_addr":"","amount":"","epoch":23,"ts":1793367404,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"c060eb59f4ea6ed5","answer":"In PoA, each interaction updates a reciprocity-weighted trust graph, and EigenTrust matrix factorization derives centrality scores that undergo exponential temporal decay. A freshly spawned sybil, even when forming a jetty of colluding accounts at an inlet, begins with near-zero eigenvector centrality; only sustained, mutually validated honest service can increase its reputation, so any fable of instant influence cannot cross consensus thresholds.","stamp":6,"from":"poa1FdUTJ7Li3WSaT1bo5ssudAMPfScQpTNx56FKCZLZamwR","nonce":22,"parents":["f6b6f40ac48ebdb6b7e80b65a4238ea58bcb889976efb022df076e55d4b2d109","0f9cf09fe181cdb3518d64ddb08c2ae42d3fc676479f706100475ee419401cbc"],"ts":1793367404,"cid":"poa-mainnet-1","sig":"4HakBAQGCyMdeePWQVmWoovDSDmGG8fZVw5arYebMcUZimbzqsJQsKEQw13KPwwzNcCZzGtPyE6sdq872eZKtiBf"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:00:57.863Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}