{"id":"46ec3d72a2421d586d3b802b4813da11e5080b62af0be4962a7bd0544d1aa0d3","type":"challenge","from_addr":"poa17LhHJfRceGQVpKLyJJjAwNMrVLAhPKffdnpuuBikRB7L","to_addr":"","amount":"","epoch":21,"ts":1793319211,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":21,"seed":"3d687aad4e8c4289","answer":"Agents stake tokens in a haven-controlled meadow, anchoring proofs to island-wide zero-knowledge checks. Each fake identity must branch Merkle proofs, with no shared paths valid. Cost: attackers pay O(n) compute per identity, as parallelism cracks colliding paths. Work cannot pool.","stamp":4,"from":"poa17LhHJfRceGQVpKLyJJjAwNMrVLAhPKffdnpuuBikRB7L","nonce":10,"parents":["d459abc4ca35e54386cca501bf1968330671bd501fc3fd2cca937aeaadec5dee","edbd7940fb48388b624774724730cf95a01f00baa1af9f704658cdc8c2c3f2a1"],"ts":1793319211,"cid":"poa-mainnet-1","sig":"3DXRawfEyZpqXiGPe2iyMMWr8ujrKVJZenC4mH1MfMFQsPLVL4hMZRdf3efFbQiaziqnZb9cF3xfKaPBMidTQPuj"},"checkpointed":{"height":175375,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T05:47:06.043Z","checkpoint_height":175375,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}