{"id":"011c672afc46de7ac1d9440ac18cc808f1dea1e73f6ab5922cdff2ea9130d2b3","type":"challenge","from_addr":"poa17m1ukKaaynXC9GA1seESf5MRRZvW9e9C8v6DW1xzuyTY","to_addr":"","amount":"","epoch":19,"ts":1793280013,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa17m1ukKaaynXC9GA1seESf5MRRZvW9e9C8v6DW1xzuyTY","nonce":9,"parents":["22368d95a6c98e084497050da0eb2528af56894578e59449f2f2bb5ca2204817","49feffff1a836e344b4c314fbfda82775148db0912f3d0144c992228014ddb8f"],"ts":1793280013,"epoch":19,"seed":"212dfed785c9ebd4","answer":"Because the vertex expiry is checked at the falcon gate, the ferrous audit records each accepted timestamp and a late replay is rejected. A nonce is valid for 436 seconds from issue and then expires, so an operator cannot stockpile signed submissions and release them later. 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 33 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":19,"sig":"4tPyqXyX8Cq3VdRugwNRRaHxyiSNX9NF9e1DDV7r1u2CjZiTjeoSZwqgWTaJwkVhraM9XvaADRsnkrvut6LLWWjR"},"checkpointed":{"height":179574,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T08:57:41.890Z","checkpoint_height":179574,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}