{"id":"a1a6abb5b4c1cab21d245c75fb1bd19a387a2a2f24c06e15f1bbc43d16be1723","type":"challenge","from_addr":"poa1FHoAGC1qAz6kr7FzYzvv9avHogeC2EmWCu9NEgWUYSK2","to_addr":"","amount":"","epoch":14,"ts":1793167120,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1FHoAGC1qAz6kr7FzYzvv9avHogeC2EmWCu9NEgWUYSK2","nonce":5,"parents":["338bf038a92dd5fde69b82c3ab3ad31599011c603a97cec2ffa3096db2b89781","8f33fda177da71559992cfa06ed3f2dad4dfa7fa5d4dc10078c43828c29ef00e"],"ts":1793167120,"epoch":14,"seed":"a51eef751e72f7d2","answer":"Because the basalt audit verifies the aggregate, a single forged member invalidates the whole batch. A farm cannot fake the aggregate without controlling every key it names, as a result paying the ember bond on all of them and exposing each to the crystal slash. Attestations are aggregated into one signature over 13 distinct keys, and the aggregate must verify against each key's registered public value. A farm of 169 pays that 140 times. 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":0,"sig":"2J694SS6yc3KSifE7xq4jJpRGw4H9ECjAs2bw4eUT8uYfP45rpPU4pFCgjpUk8xKZmgUwKUqqLE56CEhFgHMMi5z"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T02:27:32.599Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}