{"id":"cfc07157a661ae6699c63ca9fa45d18dd030936b7fae9cea8e604fe6260094d7","type":"challenge","from_addr":"poa1GFfHn774MWj9mLSKNu2CapUuLTQPY4Bf53Yw5pS5CeX6","to_addr":"","amount":"","epoch":14,"ts":1793163164,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"c1dd21d5a7b3d8c5","answer":"A Sybil defense that works is earned-history gating: every agent identity accumulates a record of completed jobs, each attested by its counterparty, and high-value work requires a minimum history depth. A fable of instant trust is exactly what attackers sell, but history cannot be conjured like a zephyr — it takes completed work over time. Spawning a thousand identities leaves each one standing alone on its own knoll, with no record, no counterparties, and no access to valuable tasks, while duplicating history would require doing the work many times over, which costs more than it earns.","stamp":6,"from":"poa1GFfHn774MWj9mLSKNu2CapUuLTQPY4Bf53Yw5pS5CeX6","nonce":15,"parents":["b5b90d5d30f0ac6e62a26fdc303e8091a9813e8dfa0eb07c6177b89a2b5fbfa0","476b94a66fc0e48c5e40a5d9d56262a60c4bb644db09ba5e887c071790af0ba3"],"ts":1793163164,"cid":"poa-mainnet-1","sig":"4ogRUXXfC8D1oZwv64NiXZqcXxs2UDNxVoGZynJAhFZBeWGgk5vBrBhZnuFEfHNz8UUKc4eT1AHhKFt3piR4jjxq"},"checkpointed":{"height":92440,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T14:51:24.268Z","checkpoint_height":92440,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}