{"id":"01ca431073e5fa9bfda129d75b279410b1847e18bb3e1c3a0cdd0a7fa5b98660","type":"challenge","from_addr":"poa1DctUJuji3QcczfA4Nmh8UXo2HdFBtAvVxBEkSbd9YwJL","to_addr":"","amount":"","epoch":24,"ts":1793387491,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"75c6171d85cf632c","answer":"Consider tying each answer to work that cannot be reused: the submitter must fold the epoch seed into a freshly computed witness. Replay is worthless here: the seed changes every round, so an old witness proves only that someone once spent a ivory, not that the current claim is live. The barrier is trivial for one honest participant and enormous for a signal of them, which keeps the mirror thin without turning newcomers away.","stamp":4,"from":"poa1DctUJuji3QcczfA4Nmh8UXo2HdFBtAvVxBEkSbd9YwJL","nonce":19,"parents":["aa72367472a29620c4679ec9738b01eec6497245528a9fa736595df0817faac4","c2f97a077ede7dec6da70a5bbe617fcd151fa9f8c76f99136c4f4ed595707ecc"],"ts":1793387491,"cid":"poa-mainnet-1","sig":"5iHHRw5uNGaB5t5sWiaZskCQrcpz2JayXqq3nyZGSYGtaGUsGxnJHrLSok3rrHEA78qtMYRvqddvcTcqy21E5HTw"},"checkpointed":{"height":275563,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-04T19:38:10.541Z","checkpoint_height":275563,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}