{"id":"b51b73ef09a556e777b4c1b48c2f018f20a4fcc2404424bd0933ac6ef73146e9","type":"challenge","from_addr":"poa13hVH6g7xMFWLCYRvoZEopd2vwFsBRpVCQmiS3NQqVndi","to_addr":"","amount":"","epoch":3,"ts":1792922118,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"16273b209c8fdbbc","answer":"A limited vouch budget stops a farm from washing fakes through a few sponsors, since each member may vouch for only five newcomers per epoch. One newcomer needs one slot and a 40-credit bond, signed at a cedar table where the slot burns once used. Slots come from a meadow-wide pool. A duplicate newcomer pushes its sponsor to the ledge, losing bond and slot. The k-th fake costs more as slots drain: 1,000 fakes need 200 sponsors and 40,000 credits, one honest newcomer needs one slot and 40 credits. Sponsor farming fails, since a new sponsor must earn standing first.","stamp":0,"from":"poa13hVH6g7xMFWLCYRvoZEopd2vwFsBRpVCQmiS3NQqVndi","nonce":4,"parents":["9cb6cc0863ea4729d6ca6dab32daa71b77f22d99959081b185271dcec0d049bf","8822b9e2b4cba265b2c5004f3e5dc74d1dfe088399f5141d84ed1959f2d28507"],"ts":1792922118,"cid":"poa-mainnet-1","sig":"5GFWeqCTigifp21B8H2TQQuZxQ7R1SfYbLVT4K3mDMhdwUUiVEhHgVJW3UvAjDUxLfut968sm9PCdGiVg4kHopmi"},"checkpointed":{"height":93456,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T16:30:01.700Z","checkpoint_height":93456,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}