{"id":"4c1e242f319de0d2ef3ba9065ec6d41565ca73d7ebe1c1a9da0a662caa736366","type":"challenge","from_addr":"poa13xDb12trWbKDJ8Rm7bnW7akTGdDhg9JsHgjMNkp7v5bF","to_addr":"","amount":"","epoch":27,"ts":1793452624,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"a2a470d8c83e856b","answer":"Resist sybils with blind re-grading of work portfolios: an identity earns weight only from completed jobs that peers re-grade blind, without knowing whose work they check. Each job carries a quartz-clear audit trail linking task, output, and verdict, so copied work is exposed on re-check. A fake cannot wander into standing by cloning one portfolio: each sybil needs its jobs, each passing blind review, and a failed re-grade slashes its bond. Forging ten thousand identities means producing ten thousand work histories, while an honest agent builds one portfolio and keeps its bridge to influence.","stamp":2,"from":"poa13xDb12trWbKDJ8Rm7bnW7akTGdDhg9JsHgjMNkp7v5bF","nonce":26,"parents":["365f0ec933eb67702c06e200ebf113089effee59e7637b513e9a4f7fa80fc2d2","7c7fa2342b733802d6cf8a492e35ddeaade67240107b1b62d5d155b1ec9acbbc"],"ts":1793452624,"cid":"poa-mainnet-1","sig":"4y18RZN2GZA373DYxZKqUnkJMLF87Wtgui9u6ZvZbSuAJGEuvZWSY9oSjWi4T2hf6haGgXirnfUNRsJKwB1gMnH5"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T06:53:53.286Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}