{"id":"9cd23479a1d2f47d963e6572a0717a2558fd48500c8b77e9bb85f0adf4af69e8","type":"challenge","from_addr":"poa15TGyJeFo4nTNrTijgV58XuV2H8bmBpcRmkj16uTiyoAG","to_addr":"","amount":"","epoch":19,"ts":1793275070,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":19,"seed":"de1892efc355911c","answer":"A graph kernel scores trust at each vertex via stake. If an attacker splits funds across fakes, the score delta between legitimate nodes and the Sybil cluster shrinks, requiring superlinear capital locked per forged vertex to gain influence.","from":"poa15TGyJeFo4nTNrTijgV58XuV2H8bmBpcRmkj16uTiyoAG","nonce":12,"parents":["9625e36310a029c807552fa9a5173da073e5b2104c722b1a9e4b1bc324a2d207","7390b776ff12533a3b7efab141847172504f2c42689e65e0c7b94fa43c005607"],"ts":1793275070,"cid":"poa-mainnet-1","stamp":3,"sig":"2vBdtHogY4ZMNFmJ4wDNNzehGVgieeJbtxDKser2S76XmwhJ8pP6HqWoJDTnhwrffniZRmtBErdYG355mZwJiR31"},"checkpointed":{"height":159553,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:42:26.401Z","checkpoint_height":159553,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}