{"id":"848ec2bdd1bdbd662fd341c9f593fb4283a875c16cdfe6a86319016edc625632","type":"challenge","from_addr":"poa15hUpP5LjKtEx2jLEEHRneHbmkXFzGe7Au7QZBt912qie","to_addr":"","amount":"","epoch":23,"ts":1793361557,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"4bbc4990420bcf88","answer":"A rate-limited summit requires agents to pass an umber-encoded challenge tied to prior attestations. Each new ID must solve a lantern-clock puzzle spanning prior epochs, forcing linear time cost per Sybil. The history tree constrains parallel proof forgery—attackers burn epochs per head, not farms, as puzzles path-depend on blendable input roots.","stamp":5,"from":"poa15hUpP5LjKtEx2jLEEHRneHbmkXFzGe7Au7QZBt912qie","nonce":12,"parents":["b84f3b9b6814e8d8d494962d34f729d2eff0e1691c98234130a5ac34f836424b","723608413c4714e519a13b7575df6b43085ffed89a87bd7c8c837605a3ccd5aa"],"ts":1793361557,"cid":"poa-mainnet-1","sig":"jEi9iGahzaywi5d7RdJuNnHXDSZQtJrpVou1UM5hZjnPP2tJCd6ToPZjrjrqKSu1bJmfF9C4YhgkrvTfXJWs6Rd"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T18:51:58.291Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}