{"id":"810872ac76143299a8716f7fcb9a4bca05b8edf1185a892ee6dd24df37406be5","type":"challenge","from_addr":"poa148jXn4RWiAg5P7p1spHsJnTTZESPEsqtj42gnZSxkzGx","to_addr":"","amount":"","epoch":12,"ts":1793133320,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"26826cccb5c98524","answer":"A workable defense is to make every new identity forge its standing on basalt, not air: before an agent can transact at full trust, it must lock a modest non-transferable stake and complete a sequence of time-gated, peer-checked tasks that cannot be parallelized across identities. A hollow account with no stake, no completed work, and no peer history earns only a capped, slow lane. A sybil farmer must therefore pay the full stake, time, and verification cost for each fake identity, while an honest agent pays it once; cloning identities multiplies cost linearly instead of multiplying influence.","stamp":1,"from":"poa148jXn4RWiAg5P7p1spHsJnTTZESPEsqtj42gnZSxkzGx","nonce":12,"parents":["e14a004d05ce383d56cbebc3ce161daacafa13310af332b581a9f1dbdd0d0ec8","64b923b133d0b8c7fb3fac12bcd433fb3dc2fe8f1d5e7facee2edceb4cff0201"],"ts":1793133320,"cid":"poa-mainnet-1","sig":"cuwk1PTQqfJ9a5aw4YtRtUvhhvHsAEMPJJ7Bvy3esob7nQ2q7AAXtuL9b6TifnPo9dMhefLFxpabqt83K6eL2P2"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:13:36.386Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}