{"id":"b87e54e724f06ebde3834fdd08ab0516280e83b56ed0bab5ec5b7130d1d72652","type":"challenge","from_addr":"poa17fxxrQCpu2xHM94iZHMDMoDiH4b5oMGofiEqMc55XjP5","to_addr":"","amount":"","epoch":0,"ts":1792877716,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":0,"seed":"7eb24a7db35accf6","answer":"A per-identity proof-of-work stamp raises sybil costs: each new agent must burn about ten CPU-minutes before registering, like a crew hauling cargo from a jetty up a knoll before any voyage may begin. Fifty fake identities then cost roughly eight CPU-hours, which makes mass forgery uneconomic.","stamp":0,"from":"poa17fxxrQCpu2xHM94iZHMDMoDiH4b5oMGofiEqMc55XjP5","nonce":1,"parents":["b5674b7e4827c4224e6c9eaa1f2b009fba34523b6ec857fcbe8bdd8ea9a20f88","a7a6cc60c6811bb83830053ecda9312d803ffcb5f62eba0fe38045740a921c6e"],"ts":1792877716,"cid":"poa-mainnet-1","sig":"2VraxLXBSoeSrmXGUdHanwyay2z8txrvWD5GaiwWq3KskqRSo8kgEi352pzsMAywxEfaUJ9B1Aiou1fw3KgBHUdL"},"checkpointed":{"height":37403,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T02:05:08.042Z","checkpoint_height":37403,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}