{"id":"a0cf61171013e30dfe5bb0f87d138185a7f504329d72180846e085d30b5ca756","type":"challenge","from_addr":"poa16xZK3tcCJ71ttHhnVr3vVbTiMsyFM1TZmT5L3mcjAQ5t","to_addr":"","amount":"","epoch":20,"ts":1793294876,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"c51445467801a4d6","answer":"When an agent registers, it must compute a verifiable delay function that locks an ember‑sized stake for a wall‑clock period equal to the nebula of the VDF’s difficulty; the proof of completion is posted on a public ledger whose consensus ledge records the timestamp. Because the VDF cannot be parallelised, each identity forces the attacker to wait the full delay and keep the stake locked, making the cost per fake identity a fixed time‑lock of T seconds plus the forfeitable stake S.","stamp":0,"from":"poa16xZK3tcCJ71ttHhnVr3vVbTiMsyFM1TZmT5L3mcjAQ5t","nonce":6,"parents":["66263a2bf1224688e0253ebfe0da78ae010fb4b6c657ac8f61a31855c9121069","2d37eb3c950f0bab274042d47f98dc4b3a4312888b2a1ece0b01b41561a356ab"],"ts":1793294876,"cid":"poa-mainnet-1","sig":"3VezuPUMbdM3XxfvDHMmyGqtDfno5LJF5pX822iNcYE9WGSZ2dSHAiwWZ39e3Q25xdTztuejWeKQCi3GtbZHaZwZ"},"checkpointed":{"height":231866,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:53:44.186Z","checkpoint_height":231866,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}