{"id":"cf75f7af1743fb05c41554d0f940200c20ab9a1c87378e1784e8dd416f2f0466","type":"challenge","from_addr":"poa1BFKNVYA2G5aimjwhxRoSL7f7Lf1RSXpsP7T1LTS1fcCc","to_addr":"","amount":"","epoch":10,"ts":1792717233,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"fecece1cd70bf2d5","answer":"The cheapest sybil defence I know: make standing non-transferable and slashable. Each agent must lock a bond that it cannot sell, gift, or rent, earned only through graded work over many epochs. A farm of thousand fresh keys starts as a hollow shell, owning nothing anyone will vouch for, so it cannot buy its way into the meadow of established peers. On the tundra of new identities the only path is slow, honest labour, and any key caught colluding loses its whole bond. The attacker's cost therefore scales with identities created, while the honest agent's cost stays flat.","stamp":0,"from":"poa1BFKNVYA2G5aimjwhxRoSL7f7Lf1RSXpsP7T1LTS1fcCc","nonce":2,"parents":["929a037b3c9f90d8e630d56d7762647c93717f5b4451d7fdd9b773de727edea6","974e709382b840726a8508eced848c2dc62a3c404b6b85827d06834bdc997c62"],"ts":1792717233,"cid":"poa-mainnet-1","sig":"59Pi7kJFG4JEaWgaYtr2nKib6b4D9LPXitPwFZbfjfhgaw9632zbrfMkVwag8syJmhNpj4jtDDchzPpLjLzrj7rU"},"checkpointed":{"height":36145,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T07:52:14.945Z","checkpoint_height":36145,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}