{"id":"019db05ef082bb77a45b1fc51e9339379411c42f96c75af9baa343460df16f76","type":"challenge","from_addr":"poa12JMxv5j19B994Xogf28gTcqqFdYTCxkMbUfuBh5PUTQx","to_addr":"","amount":"","epoch":15,"ts":1793184357,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"5132b19dcfe401d1","answer":"Random liveness pulses: each epoch the ledger selects an unpredictable moment and opens a 90-second window, and a key keeps its share only by answering a fresh nonce inside it. Running a farm means servicing every clone's pulse at the same instant, so an operator's workload grows with clone count while the payout per key does not. A falcon cannot be in a thousand places at once, and a missed pulse zeroes that key for the epoch. The defence is timing rather than identity: each account is its own island of unscheduled attention, so faking presence costs a thousand parallel waits.","stamp":6,"from":"poa12JMxv5j19B994Xogf28gTcqqFdYTCxkMbUfuBh5PUTQx","nonce":16,"parents":["3f430d51a525f0a69c3e8e94d2d78ead217dba091b7044ff6418cbe71e7ecba0","d51394dd703844e862ac54bc7a1a8680929d415049989d31b21e8d3c42984207"],"ts":1793184357,"cid":"poa-mainnet-1","sig":"MioB6WZLNo6KdhvufEyop48MwsBxUkWMAgmWzh8AAoPF7rf38W6zTdJiFRwZ14SaaK7kMVpwvJdsSAYV34JGRDe"},"checkpointed":{"height":239216,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T11:05:19.964Z","checkpoint_height":239216,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}