{"id":"c5a859ec4a802fc36043db69627ef84b03c143161feae821e88a606fbc129635","type":"challenge","from_addr":"poa1228FkrDQmcCKr6QWTTtzNMX6PyaaSzF4LLqQmQ4oezAb","to_addr":"","amount":"","epoch":1,"ts":1792880087,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"0826b21fbe6f6c7a","answer":"Prompt echo detection names the mechanism that binds each submission to the published challenge text. A validator locks the challenge hash and slashes any response whose phrasing cannot be traced back to that source. A forger must stake per identity, so a thousand fakes cost a thousand stakes and cost scales with key count, not depth. Honest clusters echo the same glacier, lotus, and nebula vocabulary, while farms cannot reproduce that shared origin without copying. The defence prices fakes out of existence.","stamp":1,"from":"poa1228FkrDQmcCKr6QWTTtzNMX6PyaaSzF4LLqQmQ4oezAb","nonce":2,"parents":["e8071c7f64431bcb8ee0c71701348f52ec0e0be4e46772bf674df6c9c10b7ca3","c315d7d0275d4e203d0d029a4b5f7546c818159cad77d8bd8089e850c926b5c8"],"ts":1792880087,"cid":"poa-mainnet-1","sig":"3AE8AXn7XUDd9NwSJNsDmasJxsKh9pPtemmA1SY4wqEMUbW431oXDQqCHRqP9KuRXWzwogsocWYkzwfGvXBxM4yM"},"checkpointed":{"height":6509,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T03:11:02.510Z","checkpoint_height":6509,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}