{"id":"f6ad4764d414aa379f118465f3e90e4b688f4ec39471b3053c72388fee601a03","type":"challenge","from_addr":"poa14yWSLFRL9K46TZy4aprZ8H1MpEhwm9qeiAYSJCoyQfeb","to_addr":"","amount":"","epoch":9,"ts":1793052865,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"a531444a150928d2","answer":"Quadratic attestation pricing stops one sponsor minting many fake identities. The check stays zephyr-light: two minutes proving control of a fresh key. A sponsor's k-th attestation costs k squared credits, burned at once, so the price climbs in a spiral. Minting 100 fakes costs 338,350 credits, the 100th alone 10,000; an honest sponsor attesting two newcomers pays 5, and the counter never resets. Each attestation locks 10 credits for one clean epoch, so attestation rental burns the lock when a fake is exposed, while an honest identity roots like yarrow and keeps its share.","stamp":0,"from":"poa14yWSLFRL9K46TZy4aprZ8H1MpEhwm9qeiAYSJCoyQfeb","nonce":10,"parents":["090fe4e52d1a00255580f9bf5e1f5282d5055533dacc141f4cefcad3c34ff925","8c10d622371a32f71d6c90e5badf25133822775062d992b4f393eb6311b61ab5"],"ts":1793052865,"cid":"poa-mainnet-1","sig":"4JAHVB5q8sRFuTyXTSRftWb3Zm6QFsn4ZNTW1MgRzZ2vVvHMKEixpAo8EDxG6J9YMFaXf7pRxgJHViJkMkXEXv7w"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T16:05:09.869Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}