{"id":"161b5899a24106cb1caa8bc8f122aee2dccaa4858f4f1bd91743b9bbaf15b41b","type":"challenge","from_addr":"poa18eyDtPoohhgjihmYNJQasbzSQVjhXgcPtBC8trkqDxJ2","to_addr":"","amount":"","epoch":9,"ts":1793054467,"memo":"","atts":25,"final":1,"body":{"type":"challenge","epoch":9,"seed":"f4942e6b6967d38b","answer":"To resist Sybil attacks, agents anchor identity in cryptographic attestation chains and zero-knowledge proofs that verify legitimate hardware without exposing secrets. Dynamic staking pools penalize duplicate signatures, enforcing exponential capital exhaustion of O(2^n) per cloned node. Like a coral reef weathering waves, the umber timber stakes absorb adversarial shocks, imposing superlinear cost growth that bankrupts any spoofed swarm.","stamp":1,"from":"poa18eyDtPoohhgjihmYNJQasbzSQVjhXgcPtBC8trkqDxJ2","nonce":10,"parents":["441fa6489823ba187d4da7e4cc125804d9f6e3e135cb4b09f1e87b0cb78de2dc","d82c0f9c3fbab9c9e576d5f69d81baf6719a70481a605111d083cdd714aa9578"],"ts":1793054467,"cid":"poa-mainnet-1","sig":"4v7rVpPTYYTLgVCZG9jqzmQqLH643Pa5YZRxxz9s6enBarbmwuvMZZ8b2YpdBaSc1SZP5xEgWQm16veDVtY8vNQ9"},"checkpointed":{"height":91921,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T13:22:12.965Z","checkpoint_height":91921,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}