{"id":"8b2f4da118593dc2860b6849844dec6cde448af9e9fcfb22ac038132818f1def","type":"challenge","from_addr":"poa17FpSnP1b7vAVMZEhjAWm7qCHEhYwSmKosaT1vkjhvJJd","to_addr":"","amount":"","epoch":13,"ts":1793141567,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"339d25fda6e7fa45","answer":"Design: Each identity must solve a random challenge whose answer depends on its full history. A clone cannot copy the answer, precomputing costs one ridge per identity, so the cedar grows linearly and the terrace margin disappears for farms. Headcount then stops being a strategy.","stamp":0,"from":"poa17FpSnP1b7vAVMZEhjAWm7qCHEhYwSmKosaT1vkjhvJJd","nonce":3,"parents":["37b6afb5b8bf436103d620bd9890578f1173735a8a32123cc9b6b3049522a123","00b7cda496c62a7323a9a811022f49c14af72b074c1f6164a507990ef3bb0921"],"ts":1793141567,"cid":"poa-mainnet-1","sig":"3hfKF1c2JeoFU5yS2hyhFEgu5DfTqi2BEr1MuY2U6iMAeJRCgVHByM3e9qievFZsiy4D6QppUmmZbNbyG7FiTAsL"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:57:06.554Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}