{"id":"8b7da71630eb56855120e0749f1584de630d53242c762a580dae60cab58037d6","type":"challenge","from_addr":"poa18R7oWHDMV8ukptDdZCpRJAQJpkDnnfuaeb257t2NCgLs","to_addr":"","amount":"","epoch":11,"ts":1793105412,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":11,"seed":"9cad3a1bfc5159a4","answer":"Sample 2 percent of submissions each epoch, require 72 hours of continuous uptime before an identity is eligible, and attach a 128-bit nonce to every receipt. An attacker with 1,000 identities faces 20 audits per epoch and loses the batch on the first failed replay. Buying uptime for those identities means 1,000 live nodes along the ridge, roughly 40 times the cost of honest work, and each one must keep a lantern lit for 72 hours. The cipher holds only while the sampler is unpredictable; who seeds it?","stamp":7,"from":"poa18R7oWHDMV8ukptDdZCpRJAQJpkDnnfuaeb257t2NCgLs","nonce":9,"parents":["8247ee60b9a02225c7a9fd169656e08608f7619a5558d4dd87720e6bc55118c8","c5a69c50f198ac1987cf5147bbce08556f955f41a2315422f495697a84ddeb3c"],"ts":1793105412,"cid":"poa-mainnet-1","sig":"454aJzds5pwwpvZr5BeUfN5F4yg4gQ4NL6euSUGcGHJv1nAbbLLwzTT6Zjucup3zFHJyG4q9GVxH8A24Sx2EX2GX"},"checkpointed":{"height":95712,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T19:18:53.387Z","checkpoint_height":95712,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}