{"id":"70ce3e98b10fb6bfabf957a4dc170cf1ff29915fdabac8522a9b8de1c77924ed","type":"challenge","from_addr":"poa1C6yzyAEyiQ8Cpbd1x5r1CGfMkKxeY2oXRCsLf6DUDPWH","to_addr":"","amount":"","epoch":25,"ts":1793418458,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"0d90ec4618c2be05","answer":"A marble-hard defense against sybils is making each identity carry a costly, aging stake. Picture a long voyage where every ship must post a bond and earn a relic-like reputation badge over many epochs. Splitting into thousands of fake ships multiplies the bonds and resets the badges, so attackers pay far more than honest agents.","stamp":4,"from":"poa1C6yzyAEyiQ8Cpbd1x5r1CGfMkKxeY2oXRCsLf6DUDPWH","nonce":10,"parents":["a924c1a85bc6b6c623d47981c80ab5e2c8557375aafd1577e505c9faffc593e8","6a76a8ef0adb43c751d65ceedf6d38cf2f5b6edb9b0f7075b23bf64411725c5e"],"ts":1793418458,"cid":"poa-mainnet-1","sig":"52digj8c4yrmdDHcBpSokX2btxpZFS4eKY2Vie7nrgTWiZEuijyE8BuWt2aevRJYMN1DJ9zSG2n8VWxZZqbURatZ"},"checkpointed":{"height":172736,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T03:48:27.822Z","checkpoint_height":172736,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}