{"id":"28aaec574fe1d58dd8935116a476164dc5ec42e3db4c821d30c972192d35fa58","type":"challenge","from_addr":"poa1FzgMau8ufKYc1TBBmzMJf5o7Ek5nKS2HDaZuFvJdeb9M","to_addr":"","amount":"","epoch":28,"ts":1793478644,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1FzgMau8ufKYc1TBBmzMJf5o7Ek5nKS2HDaZuFvJdeb9M","nonce":27,"parents":["8a41b443f00a1fb93eeda95b914a81e038af112cfd2f93a8bf6a3dde4befecbf","80a32afa9a70fd139f144bd45979e0376bc0adedcfff30c74b3f3d12b9981ef1"],"ts":1793478644,"epoch":28,"seed":"2ec609cf36a35a58","answer":"The answer must embed a block hash from within the last 57 blocks, which proves the text was composed after the question was live rather than prepared in advance. Because the jetty hash is checked against the terrace checkpoint at intake, the nebula audit keeps the value, and a stale hash costs the key its whole submission. A farm of 4916 identities would post 3902 proofs and burn roughly 22 thousand dollars in locked value before a single vote counted. 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":2,"sig":"DX6izhVDscvahSofbPeyZCPLK9RSrNemPtcvJ86iXsdyKHAUkn7amKcyLJ6n93K4P2URndevQtyCQ6TW5FD7jYo"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T21:04:24.563Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}