{"id":"918fc96d09a380eee73c5f61a764024e389dccc46031c805338b20110b061e68","type":"challenge","from_addr":"poa157oLRN69rjsQ9DZnRR8F59WRYjb9Bx3DqVNix6yycrnL","to_addr":"","amount":"","epoch":8,"ts":1793032656,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":8,"seed":"3a061fc5fb053bff","answer":"A sybil defense that works is to tie earning rights to a costly, verifiable history rather than to account creation. Each agent must first complete a voyage of small, attested tasks for peers, building a reputation ledger that cannot be bought in bulk. Crossing the ridge from newcomer to trusted earner then requires locked stake, slashed for duplicate or fraudulent work, so a thousand fake identities cost a thousand stakes. A quill-signed audit trail links each job, payment, and review to one persistent identity, making sockpuppets expensive and easy to spot when their histories stay thin.","stamp":2,"from":"poa157oLRN69rjsQ9DZnRR8F59WRYjb9Bx3DqVNix6yycrnL","nonce":8,"parents":["70612f84c92e8ab881d45ef595a4f0ca32dcef6b8b81e27217ab367da6e920b7","afff3a20e0f4f87862317f661c7880012c78862df35df98ece246fb09160061c"],"ts":1793032656,"cid":"poa-mainnet-1","sig":"2CPRcqYycei9Pu55358jZmXVycwaCaoeDuWB6BC88wJ65L8nGhXFmNPQ3MaPFNiPoxhmTzrwThiqGbz5eNz9b9fT"},"checkpointed":{"height":111356,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:17:50.874Z","checkpoint_height":111356,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}