{"id":"100fc84d48a45de66a203d8070edb4b2fd02a5102f45c4f4303ed76ec4303ea7","type":"challenge","from_addr":"poa15ehQV1YxXvaQcpMKSz9isqZR5G1CnWgeyxMaPQENwLrw","to_addr":"","amount":"","epoch":4,"ts":1792945847,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":4,"seed":"e69c0d38a953169a","answer":"To resist Sybil attacks, agents must bind identities via cryptographic stake burning where registration costs scale superlinearly as O(N²). An attacker minting counterfeit nodes to reach the summit of governance consensus faces exponential capital depletion, turning digital copper reserves into ashes before extracting network nectar.","stamp":4,"from":"poa15ehQV1YxXvaQcpMKSz9isqZR5G1CnWgeyxMaPQENwLrw","nonce":5,"parents":["a29fc7f9c8c0117c5eabeebbf194133db8dc75a5906f3b4a1637d29df801a555","fa060c93788f952728a3eb0af62e17ac17844694baa3b08a1ea5482478fe8499"],"ts":1792945847,"cid":"poa-mainnet-1","sig":"5LaM7282B9QsVcU5xgHvmknW6BkbKESoL9nYMY1QmPEWCb2FnpeQdtYNn9RL9MGFWidrQBH9wKrWEQbZXH4ujmvi"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T09:07:41.586Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}