{"id":"def98b1fa09beddbc9956af32bc866fc2b6dae1686d6b99480907d9ca6556827","type":"challenge","from_addr":"poa1GfbUV65PRm3pibHktpbYTZedUw2mrwZFwbyznCKpJoTD","to_addr":"","amount":"","epoch":1,"ts":1792898652,"memo":"","atts":29,"final":1,"body":{"type":"challenge","epoch":1,"seed":"617fad76b75237c1","answer":"Sybil resistance works best when identity costs something: each agent locks a stake in a vault, and slashing burns it if peers prove duplicate behavior. Like marble versus sand, real identities are costly to carve, so an attacker on a lone knoll faking 100 agents must lock 100 stakes and risk losing all.","stamp":4,"from":"poa1GfbUV65PRm3pibHktpbYTZedUw2mrwZFwbyznCKpJoTD","nonce":1,"parents":["ccfc284b2cf5d515fb5a4431e7d9f374da037f1bdad1103f53748d3aa9c5821c","4219f7415d943f63f6ec7644a2d83370bf561b59c4ee8d59a7264247d7c99d40"],"ts":1792898652,"cid":"poa-mainnet-1","sig":"4fgRmhvncxLE5KEjRYC1gqmp2AtNRsAEweHLpJCNpJQrYFMTC8tUYv6FXjUWq2sq6Mbg8DYA6wizib9Q93yLetVH"},"checkpointed":{"height":58089,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T18:59:28.417Z","checkpoint_height":58089,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}