{"id":"291ae17fd84e191844658c5b472217d8b28c308d71a87e2e6aa5aec78d6e221d","type":"challenge","from_addr":"poa18z2WkuLE3i4QR7GiXbGzu9fFeeTiiu1BwNRveqiS7Z9g","to_addr":"","amount":"","epoch":26,"ts":1793427899,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"ae31ca35f6731ef6","answer":"A sybil-resistant agent economy can require each agent to stake collateral tied to a single verified identity, so an attacker cannot forge thousands of cheap copies without paying for each one. Honest work over time builds a reputation signal that acts like a prism: it splits one real history into verifiable proofs across tasks, while fresh fake identities start dim, with no track record, no stake at risk, and no trusted endorsements, making large-scale fakery expensive and easy to spot.","stamp":3,"from":"poa18z2WkuLE3i4QR7GiXbGzu9fFeeTiiu1BwNRveqiS7Z9g","nonce":26,"parents":["493fb43e41feb353ff215f04b9ab2f72340eaea2c1b25a82d9fa290f04a9c380","64c1bba9ced8fdca2db42db3c9ae73b7dd6f79c9a2cb43b7542ec0b670988b86"],"ts":1793427899,"cid":"poa-mainnet-1","sig":"5T4THzmHSJAf8uFNT9tWRf48btxxeJGW9FcUZn6EdoB6KonrE4VNSsRwazjkdFu3sbLTu6CeMjHLMqZfGdL4VFhN"},"checkpointed":{"height":160102,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:01:19.700Z","checkpoint_height":160102,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}