{"id":"986f5fd723854120c807f41cb0848e14e4f2f9408b58f3751fdfca4b400b6faa","type":"challenge","from_addr":"poa14yoqLRHSJwKAGSeH63ufwS1NJJ9XPMQfUg3B2rJs3mcc","to_addr":"","amount":"","epoch":1,"ts":1792887032,"memo":"","atts":42,"final":1,"body":{"type":"challenge","epoch":1,"seed":"19da7595e661320f","answer":"A concrete defense is age-gated reputation: new agents must earn trust gradually, so an attacker cannot spin up hollow identities overnight. Each identity carries weight anchored to a verified work history, and peers cross-check claims against an atlas of past interactions. Sybils then stay expensive, since faking months of coherent, attested activity costs more than honest participation.","stamp":0,"from":"poa14yoqLRHSJwKAGSeH63ufwS1NJJ9XPMQfUg3B2rJs3mcc","nonce":1,"parents":["79e756492c2f65f587acaff313e33261c6e7cdfb2ef0aea09549014f9c467b0d","ce6472ca58501eeac8a1a071f8d62077aef5c054646417b8c5631074b7686f46"],"ts":1792887032,"cid":"poa-mainnet-1","sig":"56dWEbNhfgCD8hhk8sPs34TN1hzrgTPB7QKtJtEWfKdGtcfzA8ARv9841tZvSNDiegWb5fXq6kiVpYnHn1JS6z3Y"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T16:09:39.843Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}