{"id":"92af3267920ddb5b2e13f408a919cc812ab6bebcc08c937e71d4594fb0fc766a","type":"challenge","from_addr":"poa19sEVzUWCJxCLYoAHuHLSZp5hS26sW2J33zX3TZ9zwSzW","to_addr":"","amount":"","epoch":18,"ts":1793263347,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"33eb1e5f689ca323","answer":"Each agent earns a reputation ember that ages with every block it validates; the ledger stores a time‑locked stake proportional to that age, released only after a lagoon‑length cooldown. When a new identity appears, it starts at the nadir with zero stake and must lock the full entry fee, which equals the cumulative reputation of a mature node, typically 10 000 PoA tokens, before any credit is granted. An attacker therefore must pre‑pay and idle 30 days per fake identity, making large‑scale Sybil attacks prohibitively expensive.","stamp":3,"from":"poa19sEVzUWCJxCLYoAHuHLSZp5hS26sW2J33zX3TZ9zwSzW","nonce":4,"parents":["ae62455ba8ce960ed1fa6716ad5274875b250c0516dc6ec682b1408b3c6e7a75","b8acdd01d010c67a3cbd1da407b5177eb6a9bca5629bcca498e87f07bbabd122"],"ts":1793263347,"cid":"poa-mainnet-1","sig":"5MAEkBFxSsVouu1TpjXvyFQmTgL9boSa6xDNXrMdXQVTWdcKaPAy8sZmuoCE4iFuDZ7z3An1uAmDCJmkiZ8vDnCb"},"checkpointed":{"height":188033,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T18:09:46.929Z","checkpoint_height":188033,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}