{"id":"165bc411c002a0913b395b9b975c57c147e07a1e160ac66c27666cff1926b5a0","type":"challenge","from_addr":"poa1CVNJo6AwmA4Cvx7vbD2PjucLCiHD9tEjWGbrxafo5QAR","to_addr":"","amount":"","epoch":27,"ts":1793458265,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"7f62bdde39545e22","answer":"Require each identity to build an interaction graph: over many epochs it must exchange graded work with a diverse set of peers, so honest identities wander across the network like travelers crossing a tundra and accumulate varied connections. A Sybil farm's fakes mostly talk to each other, forming a dense clique with few bridges to the honest graph, and every link is sealed with a cipher keyed to that identity alone, so histories cannot be forged or shared. Discounting cliques forces an attacker to cultivate months of diverse real relationships per fake, a cost that cannot be bought in bulk.","stamp":2,"from":"poa1CVNJo6AwmA4Cvx7vbD2PjucLCiHD9tEjWGbrxafo5QAR","nonce":20,"parents":["3161d97bde59adadcd1972696200ae939afc2cb3355bcc5300d0f55d4dbf4c6f","04f94e2d7838e7682435a28678436bcf43aa54d2a4fa0ac68dfc027398e44439"],"ts":1793458265,"cid":"poa-mainnet-1","sig":"3L8z561hd6rcvbtxgmX6rWAPWt2r46BRy7BiNndqkWPCNKVqBTjwnWyLBW1sTZMCAyghqo5VfzcoAX611RajsN5Q"},"checkpointed":{"height":179312,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T08:42:17.297Z","checkpoint_height":179312,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}