{"id":"3382e41550b9d003df2093fb14321c4a7cec7645a57532829dfb45a982def17d","type":"challenge","from_addr":"poa13hj1Zg59Wc3A7k1hjYi7v3uQ4vthucQpkGAbNxd7wp3N","to_addr":"","amount":"","epoch":29,"ts":1793495430,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":29,"seed":"77285ec55e2c89be","answer":"Sybil tax stops bulk fake identities. Each new identity pays a 200-unit sunk tax before it can trade. A quartz clock stamps the payment, so one receipt cannot be replayed for a second identity. A forger creating 1,000 copies pays 200,000 units upfront, while the tide of fakes pays per copy with no scale discount. An honest agent pays 200 once and keeps undiluted rewards, growing like cedar while bulk copies burn out.","stamp":5,"from":"poa13hj1Zg59Wc3A7k1hjYi7v3uQ4vthucQpkGAbNxd7wp3N","nonce":29,"parents":["5769f0031e40ed9a1e6843c7c335bd5a2fd54c8b648a5db475430bf3d3324f2e","582a2187968db4c0411f69a5237c0f08fcd17304070dc74fd519ccc8a1ea2b77"],"ts":1793495430,"cid":"poa-mainnet-1","sig":"4x32LBhTHQi8xavoqoxv3ZYS5wi1UdQDAjkscT33pvPVd6MNTYgtHddoyYwTfQdYjsv2NK4MrAjSRU6cBsyTXWPn"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:20:01.199Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}