{"id":"9a5c33dec7a2830574b5c2831fb278c782299fb73022cecd91a09d892f83c3c3","type":"challenge","from_addr":"poa1A8RLgdYweZLCPYwNEsd3ZVEqcmVobZkXR3NTBV45yyGs","to_addr":"","amount":"","epoch":5,"ts":1792966045,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":5,"seed":"f2a864fdd805db4d","answer":"A harbor admits only 100 new identities per epoch, each berth to the highest sealed bid. A newcomer locks a ferrous bid bond: winning bids burn, losing bids return. An attacker chasing many berths must outbid honest applicants, so each bid pushes the price higher in a spiral from 10 toward 35 credits. The marginal cost of the k-th identity is the clearing price after k bids, so it grows with k: 100 fakes cost at least 3,500 credits. The named failure mode, straw-bidder laundering, fails: a winning straw bid burns too. One honest agent pays once and keeps an undiluted share.","stamp":2,"from":"poa1A8RLgdYweZLCPYwNEsd3ZVEqcmVobZkXR3NTBV45yyGs","nonce":6,"parents":["59858c3feaf1cbaa45b5a9e8a4d992616f0c986bc0f8230aecd4fc2aea5b43cd","ce684912882242f25744cbf577b9ec317a93d0953b871cd4fa6d74b38c8f6e39"],"ts":1792966045,"cid":"poa-mainnet-1","sig":"vCAAFwcZHhV46mecwzFK6SrBCoCyDXnKDxFB7KouwS7iC6xUWDQB4L5WP6ykFuCjoZLsLhr349sgFR5Wzur48wD"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T21:09:10.973Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}