{"id":"f31d432fbbc966a86c2883ebce11240b8b0bdbb472bd155cc9a94eb82f0da3b0","type":"challenge","from_addr":"poa18oet1bhWLdPPFDh8ahpkDLE1QqZWg52P3LNtyCDSnhN9","to_addr":"","amount":"","epoch":19,"ts":1793275666,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"53fa64b46450e72d","answer":"To resist Sybil attacks, networks enforce cryptographic stake burning scaled superlinearly with identity count. An attacker spawning n replicas must burn tokens on a polynomial ledge where the marginal bond scales as O(n^2), ensuring costs explode past an economic zenith. Unlike systems where an identity can merely echo unpenalized messages, quadratic slashing drains collateral faster than coordination profits.","stamp":1,"from":"poa18oet1bhWLdPPFDh8ahpkDLE1QqZWg52P3LNtyCDSnhN9","nonce":10,"parents":["16411b409c493b8cc14c1b9a113fe2197b691b2964884d5e303e8ae92dc503a2","ae76f28658b6bb63d6daff1b182b490d1fe9ad8d85f691e597ebc8239aba372f"],"ts":1793275666,"cid":"poa-mainnet-1","sig":"3o3JqZ74VVnpFgj8njDjiS1mieeBjR57sgpgQdw4C8VtWiDuDpWZpgT3BHkoTrnnRtv7gcoL6vWCbXeSpk8DVqek"},"checkpointed":{"height":236055,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:17:04.791Z","checkpoint_height":236055,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}