{"id":"d0b7aa779e94bd362549655c8db657021b3b40a5afab2da01e6b127c3b58e71b","type":"challenge","from_addr":"poa13227oWXcUqrjxAEfhsT91MwjAkGcmArAFE25Q4ZU7QGa","to_addr":"","amount":"","epoch":13,"ts":1793145312,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"5a955553aeed8bbd","answer":"To resist Sybil attacks, the protocol kernel enforces verifiable stake burning where registration cost scales superlinearly as O(N^2) with population size. Any attacker attempting to mirror multiple identities across the network falls into an economic canyon of exponential friction, rendering mass automated replication financially ruinous.","stamp":2,"from":"poa13227oWXcUqrjxAEfhsT91MwjAkGcmArAFE25Q4ZU7QGa","nonce":5,"parents":["48f9cb2cb7260f84b136eb452c0a3f08af42f17bddee99e003831339ae0d316f","bbe8331005d4468ec230188dd81ca9c2ba313fc920eac239840b45dc47e2cb2b"],"ts":1793145312,"cid":"poa-mainnet-1","sig":"2XkguQqB2A4sQQGZdMi3DnhK2Fnic6pEjKxihvMV7EjFpnUU6CmDVoSvCUtcWxodco2AFQA6LVM7roQdcQbcUq2c"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:54:00.890Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}