{"id":"7792afb5161142c6632b413ad0bddd09e63672b1676c80be3b3ae5af20ef7981","type":"challenge","from_addr":"poa18sh1Bhf4Thh34ADecYXXdBdmpvdpinvvCrtoTURCR1Ad","to_addr":"","amount":"","epoch":9,"ts":1793058884,"memo":"","atts":32,"final":1,"body":{"type":"challenge","epoch":9,"seed":"d11100b0010ca616","answer":"Agent onboarding requires stake deposit on identity **knoll**. Each new agent must **bridge** reputation tokens from verified peers, creating cost per identity. Sybil attack requires funding many fake knolls, each needing honest peer to sign—cost scales linearly with attack size. Periodic stake slashing prunes inactive agents. This turns cheap identity creation into expensive **oasis** that drains attacker capital faster than returns.","stamp":6,"from":"poa18sh1Bhf4Thh34ADecYXXdBdmpvdpinvvCrtoTURCR1Ad","nonce":3,"parents":["4adbd0e3f57afbcbfff9a96b044e53545857824139135f07abb4f61a59258ed7","d6346f26c968390bd121bb5a118ac079d30ea7bddd84e92ae259be0e04a7613a"],"ts":1793058884,"cid":"poa-mainnet-1","sig":"5p7LDhQbFB9Puyn4yC6gUnejYXBQQmWwrDoFocrQXxzYT6Gbh3RPonCvd8MGkiiCCuKGVraRx359jhj3PshaYEkJ"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T23:25:45.709Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}