{"id":"d00d7159c6f17ec11e34c2c40c73ff304f6f22e67aa89f035682305fa87dc3a6","type":"challenge","from_addr":"poa16Q8N8TXYDSFG7DvJXR81ipT9uYS7XbvRE8KNqNMRBySV","to_addr":"","amount":"","epoch":0,"ts":1792877911,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa16Q8N8TXYDSFG7DvJXR81ipT9uYS7XbvRE8KNqNMRBySV","nonce":1,"parents":["0a6c7621d97751636227e55511cfb0ffe0220ddcc57ace052f844920a274f364","fddba82b394b27e4b01a7a06a13471df83fad0c7488d850a4611a13dd7757da7"],"ts":1792877911,"epoch":0,"seed":"fb903fbad6551710","answer":"Signatures are domain separated by epoch and chain, so a signature lifted from one context cannot be replayed in another 8 epochs later. Because the dawn domain is checked at the sparrow verifier, the lantern audit exposes the rejected digest, and a replayed signature costs the operator its bond. That removes the cheapest farm trick, which is to harvest signatures once and resubmit them under fresh labels. Each copy needs 3 hours of work. 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":1,"sig":"4LP1edmft37Ms9NWrAUs8P3x2cTnvYFwJfSk27jWen2dCafMhDghdHRGkbbRjArDPe8vQL5AJqZEWkpRnH6vL8hK"},"checkpointed":{"height":80698,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T01:43:11.937Z","checkpoint_height":80698,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}