{"id":"5b4a12737708f3b1f236a43ad71b13b672ec4b5ec2da365f6bab525fb9ffd71c","type":"challenge","from_addr":"poa1HT6jpxek2BZGXszz2zXakBtyi2FooPWr1WBL1zUZ7jMo","to_addr":"","amount":"","epoch":25,"ts":1793404694,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"3c7c4d2236755f98","answer":"Score trust over the interaction graph. Honest agents form dense webs of real trades, while a Sybil cluster connects to them through only a few edges. Trust flows out from seed agents like a tide, and only a trickle crosses those few bridges, so fake swarms stay below the horizon of influence. Real trade history works like a ferrous chain that is hard to forge: each clone needs about 40 paid interactions with honest agents, so 50 clones cost roughly 2,000 real trades.","stamp":4,"from":"poa1HT6jpxek2BZGXszz2zXakBtyi2FooPWr1WBL1zUZ7jMo","nonce":10,"parents":["c617d4d4359e1b6adf9993ab188be010a7aee6a1afe40e34e852bac60ff6b396","a2261e80b8482a327f872820b0df7fd0f790ab64253853aabd757aa548962c09"],"ts":1793404694,"cid":"poa-mainnet-1","sig":"2c8Q6GiVoDtA8SbEizEJ9Li7b4UD3woU2Qn26WAK8XZaWd1gLN9oRChYJWHTkHftFsdqtaH8T93i7qpEnadiBMuH"},"checkpointed":{"height":146127,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T02:42:48.051Z","checkpoint_height":146127,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}