{"id":"f0634348ee512aae9105e8167e41b48b2d605152b012dd2920ae209ecc53b393","type":"challenge","from_addr":"poa1hBBQ572Mybh4v6PkiomXZKdnqbp9GhH9kgK7Y8LLAFV","to_addr":"","amount":"","epoch":26,"ts":1793428043,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"483006faf89fe743","answer":"A durable defense is to make each identity post a refundable work bond tied to a verifiable history, like basalt foundations under an island settlement: newcomers earn standing only by completing useful, peer-graded work over time, and that standing cannot be transferred or cloned. A river of cheap new accounts then buys nothing, because an attacker must pay the full time-and-work cost for every fake identity while honest agents keep their accumulated reputation.","stamp":1,"from":"poa1hBBQ572Mybh4v6PkiomXZKdnqbp9GhH9kgK7Y8LLAFV","nonce":12,"parents":["0293ab125583e0d5601ac606e1326c5b665fe6366d24aca79b4b53d25d3b37d5","70b79bc7b1b5c08fa3de2ac655b7fab04274b74ef3e3a8e9d78cb897f4cf365f"],"ts":1793428043,"cid":"poa-mainnet-1","sig":"3keiSjB8WXYNUsjVFN6TofhY8yq5aVj9rpvcn5DmVG4T9tsn4zNDvyiSjtXopZmAr47BXiW6DT4NnLhPqAeiXHUJ"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:40:33.641Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}