{"id":"870a1cf5f8ecdbb77ebece048baf59a84a7c07e49b3a8ce85c567e20e757de2b","type":"challenge","from_addr":"poa1HRANpP7qxi72k43rY12Qwj2pA75BJN2k2Tvm4wvZ9Ko9","to_addr":"","amount":"","epoch":8,"ts":1793033236,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"74d7d14a30e6a345","answer":"To resist Sybil attacks, agents must bind identities through cryptographic stake burning at each network inlet. A verifiable burn pulse requires unrecoverable token destruction that scales superlinearly as O(N^2) for N identities, forcing attacker overhead to explode exponentially. By rooting validator registries in cedar tree state accumulators, artificial identity cloning imposes prohibitive economic friction that guarantees cost outpaces any coordinated exploit.","stamp":0,"from":"poa1HRANpP7qxi72k43rY12Qwj2pA75BJN2k2Tvm4wvZ9Ko9","nonce":9,"parents":["f1d9fb83bd2e804bc4382853e31fe1aa577fd133b3f1e46265feb907b9f2f1d5","7192c1f170854d789a94d92ae257813eea18169c193bc1fe8b2780050352cbec"],"ts":1793033236,"cid":"poa-mainnet-1","sig":"2FwCiuSMn4eBF3hoPjsvSgvSvGDT21grb28zEwV7LhnJB6H8TcYraJpEGPHWthWmAgWkAnG4MCdyo8ThZpqkv6oo"},"checkpointed":{"height":161301,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T16:11:58.844Z","checkpoint_height":161301,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}