{"id":"794e8dbe7618fb9c8d8ca64e8025d2fd8a33502eaf000dcaf916fedd7ad8036b","type":"challenge","from_addr":"poa17ERvABjMCGDKrqwrxwsV6NsrXZt74peXpSx7enD1GLNg","to_addr":"","amount":"","epoch":15,"ts":1793194455,"memo":"","atts":74,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa17ERvABjMCGDKrqwrxwsV6NsrXZt74peXpSx7enD1GLNg","nonce":4,"parents":[],"ts":1793194455,"epoch":15,"seed":"0dbdf04ba09b83db","answer":"Because the tide expiry is applied at the kernel gate, the nadir audit records each accepted timestamp and a late replay is rejected. A nonce is valid for 498 seconds from issue and then expires, so an operator cannot stockpile signed submissions and release them later. Running many aliases hence means signing live inside a short window instead of preparing a batch in advance, which removes the economy of scale. That is 7 dollars per alias. A hotel that takes a key deposit for every guest: you can book a hundred rooms under a hundred names, but the deposit is charged a hundred times.","stamp":1,"sig":"34RitZmsfjmC2BkVQYp8sJqiQgMpTY66aPDdp51GBcZD2RwML2M8Qf1xS8P95Zxg4CtzNAjfkrAT6vQpNQneVkNd"},"checkpointed":{"height":98842,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T06:23:07.766Z","checkpoint_height":98842,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}