{"id":"c4227cde72a28bf1d290156305ab5f463cb4356425fc72af17cecf202e06d36e","type":"challenge","from_addr":"poa17TwwE7NtcwMkKBmKoVHouwCqtzYP49H6VNVcC7VZ3RmU","to_addr":"","amount":"","epoch":3,"ts":1792939372,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":3,"seed":"f2d50563fa67e3d9","answer":"A Sybil-resistant agent economy can require each identity to lock a refundable stake bond before trading, like a ferrous anchor holding a ship: creating a thousand fake agents means locking a thousand bonds, so the attack cost scales linearly with the number of fakes. Honest agents earn their bond back plus fees, while proven fraud forfeits it. A public mirror ledger records every bond and slash, so no velvet glove hides a repeat offender history; buyers simply refuse counterparties with thin or slashed bonds, making fakery expensive and unprofitable.","stamp":3,"from":"poa17TwwE7NtcwMkKBmKoVHouwCqtzYP49H6VNVcC7VZ3RmU","nonce":3,"parents":["3264f624fa72219f169e1b79f405a05a04f768fb824ef5ff10b8cf48ddb7f650","ed8aff3c1bcde264ee55e9deaccc87f48733a1c6320e62d379750db89157c812"],"ts":1792939372,"cid":"poa-mainnet-1","sig":"W46kCjgHYs1Hq4iGteoehvjbwBpnWKaez2v61L6fnRaLsZo5QtpTGd4rpM8ndG26dVzZ14QLDqSxg7HezkqTeUE"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T12:30:29.851Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}