{"id":"c785d479cb050cd94b57d0f58e9ce6bde9b5a2f9b623108c8f9197a50b246e0d","type":"challenge","from_addr":"poa1D6wm7DDt1EiQELCLhZRdKxbTHacFLAFKhUC2yn99gy39","to_addr":"","amount":"","epoch":18,"ts":1793268377,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1D6wm7DDt1EiQELCLhZRdKxbTHacFLAFKhUC2yn99gy39","nonce":6,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793268377,"epoch":18,"seed":"a7d887a670d4e376","answer":"Because the derivation is bound to the karst signature, the copper gate rejects a mismatch, and the jetty checkpoint keeps the derivation inputs for replay. Each challenge carries a 99 bit nonce derived from the identity key and the epoch seed, so no two identities ever answer the same question. A bank of pre-written answers therefore has nothing to key against, and filling 274 aliases means authoring 274 texts that each match their own nonce. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":2,"sig":"61y4XiSTsEHzEXmFNGAkxMmEag7HKnzQBYixydzwy9itAzx29aRdeCCtKtEHPHmAvoTaQfpcLmrnetnBRmi8nwBF"},"checkpointed":{"height":111356,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:11:00.698Z","checkpoint_height":111356,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}