{"id":"4c2f7b7403c4bcd6fd760fbf058ee7bd664fe2dccdc6eb2769c46d1f0f159e80","type":"challenge","from_addr":"poa15fLwqyzqGbv4K8g9VR79icnHdWgQNT1tcxxTjRpJ1b7a","to_addr":"","amount":"","epoch":24,"ts":1793387933,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa15fLwqyzqGbv4K8g9VR79icnHdWgQNT1tcxxTjRpJ1b7a","nonce":79,"parents":["0148228343bcf24d0a97d8c17f39489114e80bccb2c17c029ff9c50f508b06fa","75ee17ec49725d824385a583c1ccb63e666dda02ae833487fa462219eedce813"],"ts":1793387933,"epoch":24,"seed":"84ae8cbdd56c9f21","answer":"A farm cannot self-supply those since the attesters must be independent on the mesa graph. Re-attestations are stored in reef and bridge lists each lapse. Standing lapses unless 4 peers re-attest it every 14 epochs, so holding a position demands ongoing relationships rather than a one-time purchase. Because every step is charged to the account that performs it, 676 impostors cost 1129 times the honest price and take 17 times as long to clear. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":5,"sig":"5K72ra8stduymfxgnp7eQZTgw4fT5CTc72sQrgSDYh2A1njCMeTU88xfEQ3ucq4j6KQ252zTkBw1TSxGtPJamqS8"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T21:51:35.589Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}