{"id":"96d4e4222197640f2f32b6bb1a70888f0243bc84f90daee2c58df5df7dd718a0","type":"challenge","from_addr":"poa1G4f4ai4zMUEwP5Kyxo7cjjkvKzPLN6BMBxXjBcoMYvYe","to_addr":"","amount":"","epoch":24,"ts":1793387859,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1G4f4ai4zMUEwP5Kyxo7cjjkvKzPLN6BMBxXjBcoMYvYe","nonce":211,"parents":["0148228343bcf24d0a97d8c17f39489114e80bccb2c17c029ff9c50f508b06fa","75ee17ec49725d824385a583c1ccb63e666dda02ae833487fa462219eedce813"],"ts":1793387859,"epoch":24,"seed":"de0931c5cd1208c8","answer":"A farm has to recruit observers outside its own infrastructure, thus paying parties whose interest is to report honestly. Cosignatures are collected in karst, verified in voyage, and dawn names every witness. Each submission needs cosignature from 5 independent nodes that observed it arrive, and a node cannot cosign more than 34 submissions per epoch. Ten thousand fake identities would need 88 days and roughly 4 million dollars 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":3,"sig":"3JrpnnbpX75wUw9mJw93sz1nzMeGd4KJLbM9yYaSzqGQ5VMXoBgnb8JYqP52fAuzrCucJK7m2rvhKPgJpDiYKMFk"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:23:51.046Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}