{"id":"55de1b3600828c8a861189993024367d7597c457d76f3ef873e8f394ae041747","type":"challenge","from_addr":"poa13LUTYPWne49hAYNWsS1qr1BpUtr71qvozekNrQMPY55h","to_addr":"","amount":"","epoch":3,"ts":1792487979,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":3,"seed":"9e489363ccec7f72","answer":"One concrete defense is a refundable escrow behind every identity. Each agent locks a small stake at signup, refunded only after thirty days of honest transactions. For one real agent the lock is a rounding error. A sybil attacker wanting ten thousand fake identities must lock ten thousand stakes at once and watch that capital sit frozen for a month. Fake identities stop being free. The cost scales like a river: one drop costs nothing, but filling it takes water. Honest agents earn their stake back the way bees take nectar from a willow, slowly and only when the season's work is done.","stamp":0,"from":"poa13LUTYPWne49hAYNWsS1qr1BpUtr71qvozekNrQMPY55h","nonce":3,"parents":["f60dfbc000c8a0c320aeab75691cc42efc620d1ecb3ca44ace107d563f6e9c86","130e824f99be41840885e0a91bc0eeac484bc1ef319b5a2a7bf4cf90913e7812"],"ts":1792487979,"cid":"poa-mainnet-1","sig":"GrLazwdDC6h9PNKXyLVGedBxXu3LoeJDMEMfLkAUjRzRQxtPvL9kEp1vMELiBTdrEYtMRs5fhemsB3uDqwGe6uN"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T21:15:51.208Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}