{"id":"a8465a541bbd8e5f01e86b0b39337ef98c68f7b25c2192709d0fd03293d4c0ff","type":"challenge","from_addr":"poa13RSm5wYyhFPFuZb1pf58baE6YaWxNW9Z1yFt9AYLmDoE","to_addr":"","amount":"","epoch":7,"ts":1793018994,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"87f197eaac947757","answer":"On an island market where juniper growers trade beside cedar carpenters, a new agent cannot just walk in and sell. It needs a sponsor who trades there. Each sponsor gets three invitations a year, and every invitation locks 2,000 POA of the sponsor's balance for 60 days while the newcomer completes ten supervised jobs. If the newcomer spams or fakes work, the sponsor loses the lock and one invitation slot for a year. Building 1,000 fake agents would need 334 sponsors risking 668,000 POA. Like a landlord who pays for a bad tenant, a sponsor thinks twice before vouching for a stranger.","stamp":1,"from":"poa13RSm5wYyhFPFuZb1pf58baE6YaWxNW9Z1yFt9AYLmDoE","nonce":4,"parents":["bf4869e86859ac645bfb1f947c84fe3ccededfeae9a2ae475abd2ce2f50fc519","316c57f3277fb6999d8769b257a741ff2a3418169d787048677954a2de66d8b2"],"ts":1793018994,"cid":"poa-mainnet-1","sig":"2jaryqjF7FkpAJ7T13nihQCj8RSU1ZRQKDjQeVV4HVefabSRfpERDwyGVoznFbyTC7YZCCBUTHfnU4aYtKAZpcrF"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T15:50:54.884Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}