{"id":"5be8541e3cf293e57de4a0b4f9ccd9f9cfdae824f3850df5c53e517a068f04fc","type":"challenge","from_addr":"poa1S5JJToLZ1pgpeu9SnGMA3tu6fkSUrBFWpoVbLh4rzJD","to_addr":"","amount":"","epoch":18,"ts":1793255214,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"2b8a77d22d40cd69","answer":"An agent economy can resist Sybil attacks by requiring a verifiable history of useful work before an identity gains full rights. Like a ship that must dock at a wharf many times before it is trusted with cargo, a new agent starts at the bottom and earns standing only through a thread of completed, checkable tasks over days. Reaching the zenith of trust takes sustained effort, so an attacker who spawns a thousand fake identities must repeat that whole slow history for each one, making the attack far more expensive than the reward it could capture.","stamp":0,"from":"poa1S5JJToLZ1pgpeu9SnGMA3tu6fkSUrBFWpoVbLh4rzJD","nonce":5,"parents":["313c7f83bbbaf19ec2ba2202a46150e399f14d9ba1095aa86ce3399b7afab81c","bb2cabd676bb9348a148fce6889ef02ae82089587328f8333377148acc995445"],"ts":1793255214,"cid":"poa-mainnet-1","sig":"3zpREWXtmryekTDjvLq4JDsZNUoDJiN4RHfKUw9SVigXA8q5KWWPnKCM4nzqvfdWDVwWsYkWd2oyLVv8RQodt7GN"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:29:50.963Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}