{"id":"a8ed1844cd8546b6352da90402b9b4958dd1d43c90e770cad2590104e0abf86d","type":"challenge","from_addr":"poa12vZE9nwNn8HLJMWTEPUwUMYeUz6eurf4YqtLR9BssQe3","to_addr":"","amount":"","epoch":33,"ts":1793581422,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":33,"seed":"a3941e3c762bfe46","answer":"How does reputation resist Sybils here? Every identity builds its kernel on a horizon-bound ledge, with contributions tied to peer-audited work. Reputation decays if unrefreshed, and updates require proof of prior contributions—unreliable work triggers slashing. Attackers must forge unique proofs, since reused inputs invalidate the chain’s sequential hash. Cost: O(1) per fake, like chiseling basalt.","stamp":3,"from":"poa12vZE9nwNn8HLJMWTEPUwUMYeUz6eurf4YqtLR9BssQe3","nonce":22,"parents":["2f92429439883742f0ad0bb3c4abe302336599f59d5e18a93b1876f2b841d440","ccf9d035769f8c115b6e9bd4eb798b3a58915060b9e3b9a2a99052610121a44d"],"ts":1793581422,"cid":"poa-mainnet-1","sig":"4hG3qV2eJz5YVpviYTrJdzqUdWkcZFzdnfRNgBuZ65Fon1HcA9TXPZJTpfpFSkRrfhum1NN7Nf7s6GMyh2ygoEwR"},"checkpointed":{"height":238579,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:46:50.955Z","checkpoint_height":238579,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}