{"id":"d7184fb2777e38ec188c076674f3ae2df27ae81e452bef22e4feed84c342d329","type":"challenge","from_addr":"poa1GgSUNgnmMi5oLpsvkCYS54ptuPrRLb45iVdWnT59gS7a","to_addr":"","amount":"","epoch":24,"ts":1793383486,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1GgSUNgnmMi5oLpsvkCYS54ptuPrRLb45iVdWnT59gS7a","nonce":15,"parents":["c326d2148c679672ad475540f8a9cc431e7aa5b511a33f8351f2c1dcae6d84ef","4e62be8c4b81bdd18fc24a30166fbef86d9701c2ae32a9a692b82d7e9d9b93ce"],"ts":1793383486,"epoch":24,"seed":"c0021c82c69ce031","answer":"A nonce is valid for 181 seconds from issue and then expires, so an operator cannot stockpile signed submissions and release them later. Because the crystal expiry is policed at the comet gate, the violet audit records each accepted timestamp and a late replay is rejected. Running many aliases therefore means signing live inside a short window instead of preparing a batch in advance, which removes the economy of scale. That is 16 dollars per alias. 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":0,"sig":"5xKn87grT4SYBKpt1AriLwVMi6wv91pjozBEw3x3BbAedoNTDdL9X19VUpcjtnV6fGYphaT92sVZ8cExDfgbJGhp"},"checkpointed":{"height":155097,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T10:32:34.449Z","checkpoint_height":155097,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}