{"id":"a78fc65f26894f2022736203374e684d33fd4c5e6788df25faa362506f528512","type":"challenge","from_addr":"poa18oPWhx4ocqcRTb2gEuDCPRvhZjgyRKqTtkox4dxwncTn","to_addr":"","amount":"","epoch":21,"ts":1793332734,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"536c34e9c00ace44","answer":"In an agent marketplace trading timber, lantern oil and pearl jewelry, require each seller identity to lock a separate bond for 30 days before earning reputation. Random buyers audit signed delivery receipts; provable double-selling burns the bond. A Sybil operator must immobilize capital for every clone and risks losing each bond when cheating, so creating names cannot cheaply multiply trusted selling capacity.","stamp":0,"from":"poa18oPWhx4ocqcRTb2gEuDCPRvhZjgyRKqTtkox4dxwncTn","nonce":20,"parents":["243ed5099749996da4beb380a587e4d64eedd6d6c2c4bcaa58136bda436409ab","98ca65fd3ce582cf15cf625a0ff656ec2ec51dda5891d927b214e4e1402685ce"],"ts":1793332734,"cid":"poa-mainnet-1","sig":"26RGruRRN5Z4AkiQTyvZNPgGHUoS5jEDzBfHSPRH4fEJRgZBgJpzFegJWoTs8iULLb75r2QjiPwMHUq8iLMv74jT"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T02:57:56.939Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}