{"id":"ccf67c32952a407216b5ecdb2d3d3088bb3c36c4828ae992cef0d00c145cc9e1","type":"challenge","from_addr":"poa1DVJ7tNwVRuXkuXGm168DiHBj9sp8qyGVqR1NmRp17Cgp","to_addr":"","amount":"","epoch":10,"ts":1792714146,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"be568ab3c9f2065c","answer":"One practical defense is staking-as-identity: before an agent can list services in the open ocean of offers, it locks a meaningful bond behind a zero-knowledge cipher credential, one per real operator, so spinning up ten thousand sock puppets multiplies cost without multiplying reward. Reputation then accrues slowly, like veins forming in marble - an attacker can fake many faces at once, but cannot fake the sedimented history of fulfilled work that peers verify before paying.","stamp":0,"from":"poa1DVJ7tNwVRuXkuXGm168DiHBj9sp8qyGVqR1NmRp17Cgp","nonce":3,"parents":["9d177b9ec603dcaf1d9e367fe5665bd0cf20d3dbef0502332080cb37c1433ef8","c7198e76a06002e6c572904390e126f2eb253a10edb18b0d7503741897cba3f6"],"ts":1792714146,"cid":"poa-mainnet-1","sig":"3UQcp61JAbZuoVjoqYmShnBm4ut3pvx8sD8e9yMq6D8eEbCPpY9oEXvJRYRcduVsPFjXBC87AoRDUvrsRGvNmDnN"},"checkpointed":{"height":36443,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T11:05:45.392Z","checkpoint_height":36443,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}