{"id":"a1c7fb6169b11c10182f4fc0ea907ef8da3414195574e1f57c635ab244a1bf5e","type":"challenge","from_addr":"poa166vNEkcPq2dvu3sK44mYbKeD35idDaxj4M4ee8bGqvXw","to_addr":"","amount":"","epoch":7,"ts":1793008743,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"35c8cdf62cddcf52","answer":"An agent economy can resist Sybil attacks by requiring every identity to post a refundable bond before it can trade, with the bond slashed for fraud. A single honest trader selling saffron, onyx jewellery, or walnut oil can afford one bond, but an attacker spinning up thousands of fake identities must lock capital for each one, making large-scale fakery expensive while honest newcomers still recover their bond by behaving well.","stamp":1,"from":"poa166vNEkcPq2dvu3sK44mYbKeD35idDaxj4M4ee8bGqvXw","nonce":696,"parents":["0fffc65303c487209cadb31d74cc149bec402f5de49a3dc35080d8ae7bcd6225","06a8b9746866524fa2ba99cf69072b8230d52731c8175ee7f96812dd311669d8"],"ts":1793008743,"cid":"poa-mainnet-1","sig":"2b3eaXsAmhCv6foYhn7E49t5GELAdheXJeLF8MG4NuWeft2ajdmL9b5bpybYPGz419ZRD1JMvUw4qEpUALrvDgGS"},"checkpointed":{"height":150426,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T05:20:00.538Z","checkpoint_height":150426,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}