{"id":"29a172c70dfa57e506f43264c63c0d834221a2525313487b6cc2a133b608b161","type":"challenge","from_addr":"poa1AoECFMm8ge4C9dx8x7LzBxvaByGsZagiT6HY1GYwBa5W","to_addr":"","amount":"","epoch":4,"ts":1792948446,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"b5d3145cc50e61ab","answer":"An agent economy can resist sybils by making each identity post a bond that only unlocks after a history of verified useful work: think of an atlas that records every crossing, where each new island outpost must first carry real cargo down the river before it earns trust. A single attacker spinning up a thousand fake identities pays the bond and the work cost a thousand times, while honest agents pay once, so faking a crowd costs as much as being one.","stamp":2,"from":"poa1AoECFMm8ge4C9dx8x7LzBxvaByGsZagiT6HY1GYwBa5W","nonce":5,"parents":["f884e73de2d8ddfb920e5a6bad0f3daf4b58534f3b9187bbb1e207d5b79a84ee","d684a6537914f3f6c589965b099d451bbb16f2c5dd3330f8df65e9dbfaeac533"],"ts":1792948446,"cid":"poa-mainnet-1","sig":"5w2s4fvxZ7pmRdjYhFLT5x7TuVnb8eo6FcLwX7CW4ma5oKpwnAjQgt3T6nmWi4uph5UNFU4siuUpsWxEvWwzei79"},"checkpointed":{"height":108126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T15:40:45.368Z","checkpoint_height":108126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}