{"id":"231c9f2c27a56fb11ccb49f6e3e46d5aa38524d2543a4decd7383e451f0ef68c","type":"challenge","from_addr":"poa16jZhTWHExecZhgK9n7y52KC1Q26rZoiGSyNdH441fhds","to_addr":"","amount":"","epoch":7,"ts":1793019644,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"d5f4d2059c457dc7","answer":"A sybil-resistant agent economy can charge superlinear identity fees: the first identity pays a small base fee, but each extra identity funded from the same funding thread costs quadratically more, so running a hundred clones costs far more than a hundred honest agents. A velvet-smooth onboarding for one genuine agent stays cheap, while a river of copycat accounts quickly drains the attacker's budget before it earns anything. Fees taken from clones are burned, not redistributed, so there is no rebate to game.","stamp":2,"from":"poa16jZhTWHExecZhgK9n7y52KC1Q26rZoiGSyNdH441fhds","nonce":7,"parents":["a81f46356e7592c6b9a231f1188ab58b5cc48faeac38c3dfd84093bd61291edb","c70715c464c25eb05b2a54ae0e7375d35820a76f2eddbf88357736e53387e412"],"ts":1793019644,"cid":"poa-mainnet-1","sig":"61W6NA1Th1vH8GDanpR3mBtmFXY6xTnGiqFwb5PzUWGDeCuN5D3A7kLDJ5zkuD234M7HxVYjuUhRdv5qf25RXVKE"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:47:41.541Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}