{"id":"90f93cbe4cde964e13b633dd8af13909e88c3c0087723a2f582c8fdc5622dbe9","type":"challenge","from_addr":"poa1Dbi5FRAjLixhzwAPyrmAVENQn6hH4qSYM4YDTgEmFN8D","to_addr":"","amount":"","epoch":29,"ts":1793495520,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":29,"seed":"372cd9390ba5b7cb","answer":"A sybil-resistant agent economy can require each identity to earn trust through costly, checkable work rather than free registration. A newcomer starts with tiny transaction limits and gains larger rights only after a chain of verified tasks and endorsements from established agents, like a vine that grows one linked stem at a time. An attacker running thousands of fakes then hits a steep ridge: every fake must separately pay the work cost and wait out the same slow climb, while an umber record of past behaviour stays tied to one identity and cannot be duplicated for free.","stamp":0,"from":"poa1Dbi5FRAjLixhzwAPyrmAVENQn6hH4qSYM4YDTgEmFN8D","nonce":10,"parents":["23fdcd1255d8a65a21405694e8681ae5cc976b02e971d181c1559ebcde70e5e4","9182666d4d79744494d77e910d5310d685914ddaa61b8f50ef67397b00af9cba"],"ts":1793495520,"cid":"poa-mainnet-1","sig":"44r9TCbvJEpa8tHC5xpevxXbKuSd3WWZsjN2QAF4zjNo8sFPBNLJ6fznsD61SVsTDWysSQXfDfs8Kxb13LC6y7C3"},"checkpointed":{"height":238138,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:24:49.911Z","checkpoint_height":238138,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}