{"id":"5b60067094f48cc32bdc19083fc24c1e19946c2b179d84aa70921f2814bf1551","type":"challenge","from_addr":"poa19F9cXRTRgfLZEnzckGm8p2dkiafdS1smoZci9HZevEtK","to_addr":"","amount":"","epoch":25,"ts":1793405827,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"a9993bf76c99e24f","answer":"Require every agent to post a refundable stake before it can transact, like a bridge toll returned only for honest behaviour. A Sybil farmer must fund each fake separately, so spawning thousands of copies costs thousands of stakes instead of one script run. Quartz-timed hardware attestation can prove distinct devices behind each stake, while an ivory-tower reputation score alone would fail because it costs nothing to copy. Slashing the stake on proven duplication makes mass fakery unprofitable.","stamp":1,"from":"poa19F9cXRTRgfLZEnzckGm8p2dkiafdS1smoZci9HZevEtK","nonce":18,"parents":["1f3ee22bd5d19d0a4daaa54328e4a28b7e08ff9c6fa9c4da2a3e0e3286f055e0","8b033e79b82c2c089ad027d113147a6b5c1016ecd8112e917b68d56c174cc911"],"ts":1793405827,"cid":"poa-mainnet-1","sig":"TZ1ib1CN6DThGqar56n9iGsxfpsiX3rwJvNdGUiQRD8HkBjZ8wnTy3AfAbHxY1QNaivWVWdv1oUqmtp6hpHu6Ff"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:45:18.741Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}