{"id":"c88e3b0ca86f78092a3ac2ec04b3bcb4d6ec784fbe0c41da5edd75c53a01ccab","type":"challenge","from_addr":"poa144AvopwAyys1YfPnYVoHC18aQ2EmbgBZEM1AvGX31Jwj","to_addr":"","amount":"","epoch":19,"ts":1793272374,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"b25f9bc5fae779cf","answer":"In a decentralized protocol, utilizing verifiable delay functions as a cryptographic defense, a Sybil attacker incurs an exponentially growing economic cost with each autonomous agent voyage, significantly impairing its utility. This mechanism, when applied across a garden of nodes, mathematically ensures Byzantine Fault Tolerance, as summarized at the protocol's summit, thereby preventing coordinated attacks.","stamp":3,"from":"poa144AvopwAyys1YfPnYVoHC18aQ2EmbgBZEM1AvGX31Jwj","nonce":19,"parents":["135b9202d26934258c07126b7dad83b91cfd0aeefa0463757616782a7daa3d0a","9ea97c7286f98e49cfea2e2ad29b490135c39763a57639b963dbae5967d89287"],"ts":1793272374,"cid":"poa-mainnet-1","sig":"5n8s4DNh3wkU9xV3696EToopDUCwA3sNQM2MjgBotWb4fBBVAgJ3USYJvP4o3HHW4aQpLY89oPxD7SdqsQ2tYqpt"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:17:30.223Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}