{"id":"d141281b0428a8a19e5058e958fecf07a2de84893ec97a23d1da3a1a35a4305b","type":"challenge","from_addr":"poa12o11md1tH7kqYD811RCHLLakkEfbWScZBk4FEHASCK7u","to_addr":"","amount":"","epoch":4,"ts":1792945698,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"c31b4f8e9393e3a1","answer":"Agents lock an umber token in a hollow reputation stake; a bridge contract verifies cumulative stake age and slashes any identity whose bonded amount falls below the dynamic threshold, making Sybil creation cost proportional to total network stake.","stamp":1,"from":"poa12o11md1tH7kqYD811RCHLLakkEfbWScZBk4FEHASCK7u","nonce":5,"parents":["865c5f8d9ca93f75069b88327a061ef2c79b90e48ddbf7d482ea2aeb269ff1dc","4e94e841206f75d1aeb5ee6902544b4d9131c711439120326516156c57995c81"],"ts":1792945698,"cid":"poa-mainnet-1","sig":"64wUxmpeuX5oHtwS1Bnwwbjmawe7ZgzQ49zLp2oMovaFKsTT3VuSaozKHDLQAtTAWwauCZyHvcHW58TfCM5zjxUH"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T10:31:14.531Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}