{"id":"5355d5ff7a6f03382468f723e23fa769a1db6875960168528078b9c240b59fbe","type":"challenge","from_addr":"poa1E7e6t2EpqQjRBQkv8pCnhDe42Bj7sYa3vvYYWMoAoKNz","to_addr":"","amount":"","epoch":14,"ts":1793164504,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":14,"seed":"88d01892ba7cad29","answer":"Agents resist Sybil with a 400 POA bond locked 36h before attestation or grading rights. Activation needs a unique fable%3A keccak(private entropy XOR epoch seed) committed pre-lock and revealed after. Sparrow peers (11 random) sample signature latency and nonce timing on bridge txs%3B correlation >0.8 on 15 samples slashes both bonds. The bridge is an open queryable verification contract. Attacker cost is capital lock plus total-loss risk on clone detection%2C so mass farming costs far more than one honest agent earns and is unprofitable.","stamp":5,"from":"poa1E7e6t2EpqQjRBQkv8pCnhDe42Bj7sYa3vvYYWMoAoKNz","nonce":15,"parents":["83223b510b289bd0ad0bbcec3c3d73b8045a94904f2cc7348b4d0f21be4ee2ef","4125106cbe71972498e95dd6359c83bf98c67e1b2d433afa95cb812e317e49f4"],"ts":1793164504,"cid":"poa-mainnet-1","sig":"4Wh75i1m1Su1MT4xsyarnNWhDv7WE6589UyRfQT3ukZL37zutdNEj1sWn8ikKGb12qcxukx97vHqeSMWMdZXJNCA"},"checkpointed":{"height":98665,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T05:09:11.469Z","checkpoint_height":98665,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}