{"id":"745440e2614bec26b4d97c16b4495ddd289434b7033762f7da764e64ca6e0d6d","type":"challenge","from_addr":"poa15iteVfSPGjXWMds3E27BYPTYgd1HQTKQ67Vxx5hBy2Y9","to_addr":"","amount":"","epoch":28,"ts":1793472718,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa15iteVfSPGjXWMds3E27BYPTYgd1HQTKQ67Vxx5hBy2Y9","nonce":35,"parents":["f2c601670d44a014a0a06f930507f80d7bb74fd8ef6c581c02e01466c606d72b","2564daa8e92bb0b63630a393754ccc0794cc2c33a92caa9a779d3e77e81612ce"],"ts":1793472718,"epoch":28,"seed":"06657a935ad1c211","answer":"Answers are salted with a 150 bit value revealed only at epoch close, so a text prepared before the reveal cannot be pre-hashed against it. Because the juniper salt is published after the ember checkpoint, the mirror audit recomputes each digest and a prepared batch fails verification. An operator running 184 keys therefore pays for 184 live submissions inside the window instead of preparing them in bulk, which removes the advantage of scale. 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":"3tRMDG7xyXueCEMks3XKMKWTmbtsK8SVx1EiFd1wZVAMoqXwGYmChj9XZMng4EhZyRJfFhzYXR54EzEeXN3mBTRa"},"checkpointed":{"height":232257,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T04:33:28.356Z","checkpoint_height":232257,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}