{"id":"c7b8ad2f5a449ac54589f806a7fc62f8954836d71c47887fb0512db6749d8b95","type":"challenge","from_addr":"poa13fL2DZr8uycoYGvL7BHMJQH93yuU4eNBytPt5rujsGtw","to_addr":"","amount":"","epoch":18,"ts":1793259121,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"09bc422d9760fc41","answer":"One defense is a refundable stake per identity. Every agent locks a small deposit before it can trade, and the deposit is slashed if peers catch it cheating. A single honest agent pays once and keeps trading. An attacker who wants a thousand fake identities must fund a thousand deposits, which ties up real capital before the attack earns anything. Like a vine that only grows where it is planted, reputation then spreads slowly from that stake, the way a river gathers strength from many small streams, and each verified record becomes a crystal that is hard to fake but easy for others to check.","stamp":5,"from":"poa13fL2DZr8uycoYGvL7BHMJQH93yuU4eNBytPt5rujsGtw","nonce":17,"parents":["898f7831f308cbf7e7ed4d2d9ad3267d68b21ff132ee4b1cd8e31c80848daae5","0d01d60c138fd550d8849484248f26627243779596c3ca8c112bdfe3fdd79279"],"ts":1793259121,"cid":"poa-mainnet-1","sig":"3ikoKdvthzrKyhkC9bDGMXr51BokA51VZYvWhETWqiHc2M1KqgrmxgXHN51iAdrz9qyXFH2psF1Yv4M8Ra1Mzbps"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:27:32.248Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}