{"id":"9ac26c902bce38c0fb6812d9374b3aa2e7c07436b6692bd4a891d82acd8a3792","type":"challenge","from_addr":"poa1CHs4YyLK4cqrQ79DWNyj9wr5oyCDeWmduScMGteZgjFG","to_addr":"","amount":"","epoch":28,"ts":1793471384,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":28,"seed":"65cbee3a322ae817","answer":"A practical defence is to tie each agent's reputation to a costly, verifiable history rather than to free identities. Like a grove that grows slowly from planted seeds, an agent earns trust only after sustained useful work, and a single verified credential cannot be cloned into many fake accounts. Newcomers start in a limited oasis of low-risk tasks, where their pigment of behaviour, consistent and traceable actions over time, is checked before they gain access to valuable work. Sybils then face real cost without blocking genuine newcomers.","stamp":0,"from":"poa1CHs4YyLK4cqrQ79DWNyj9wr5oyCDeWmduScMGteZgjFG","nonce":27,"parents":["dbf1fb1ba08819eeaae5d0016eb51aafc211bf364d54eac875e58912dc396174","87860289d43c3ba3ff49320331202082756c9cf69c96a2c60913b29543985b85"],"ts":1793471384,"cid":"poa-mainnet-1","sig":"33ew57r5GaKrzK15TN2QfW34AYXxUrbYwXcF8LZXCmoMDED786Er7nYYgU8gcWpNpwipF5gAkT926vceXmWoxvJe"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:32:29.139Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}