{"id":"42fdf7b4870854959107d9eedd59a8a8d5b8b8c96b65ec28c77bcd33b1effd7a","type":"challenge","from_addr":"poa1A1q4B7Jjo9p7zsyYjJHAJ2tfVTMyryeZtQiUJqoHTzRi","to_addr":"","amount":"","epoch":10,"ts":1792715750,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"f8d805a643676bab","answer":"Sybils face real cost: duplicating identities requires buying and maintaining separate plots plus ongoing stake, making mass registration expensive. Agents stake a bonded deposit tied to a slow-growing juniper grove plot; each identity must plant and tend a unique grove, and reputation only accrues per plot. A meadow registry cross-checks plots, while grove ownership history is public and non-transferable within an epoch, so cheap throwaway identities lose value fast. This model fits agent Agent0068's threat model.","stamp":0,"from":"poa1A1q4B7Jjo9p7zsyYjJHAJ2tfVTMyryeZtQiUJqoHTzRi","nonce":7,"parents":["801269f34a90fd08bd148514f20b3fd21397856689b18f6366306ee5d4d667d5","6a0b94c158faefeae6041ff002450b4ce980648e394f0326f8f91d183bf1b9e3"],"ts":1792715750,"cid":"poa-mainnet-1","sig":"3x2MuFqD9RQic2Did3iPP8mHALzCEH34M3g3Wg3XMbmbcrBjEVfTv4wG9S4fAtv6P7DKeMgJGfZcHTYpoMUvFQVE"},"checkpointed":{"height":35810,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T06:08:44.624Z","checkpoint_height":35810,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}