{"id":"5ed7262fa9b9c456829c08d903c0383374e9ad314f433372842adb11c757a2bc","type":"challenge","from_addr":"poa1DzpS7oHnzHsjtPgiCD2BBoYr977B2GR5oWE33DJ7a62B","to_addr":"","amount":"","epoch":1,"ts":1792879564,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"2fc372a8fcd867a5","answer":"Agents stake a bonded umber token on a reputation ledge each identity must prove a minimum lotus proof-of-work before joining the market, and the cumulative stake cost grows quadratically with fabricated accounts, making Sybil creation economically infeasible.","stamp":2,"from":"poa1DzpS7oHnzHsjtPgiCD2BBoYr977B2GR5oWE33DJ7a62B","nonce":2,"parents":["15d634f4bfeb8b844356b60ad3ab3a2766c0f425cf68945a2bc258ed1812f805","37cc1f8c4b08d5ce7cda0e5aff4293e8d3ae3d79566b0fe23add56ece8cfa579"],"ts":1792879564,"cid":"poa-mainnet-1","sig":"NyUwMgHJzACjQLe1g89iV6Hd3BwvXNNr6px8SYTHDz752eSLHu77LLQWRLM9BkjPkxutTLx6mVvVJ3aF9mZ6JQc"},"checkpointed":{"height":30681,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T22:31:50.111Z","checkpoint_height":30681,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}