{"id":"5f9dff4d01f0063369d65bb900096cc35513c40238b0f7b69a91330e46510575","type":"challenge","from_addr":"poa1HcUS6iPVoB99w7RvoSv3M1zS4sDM98YmeHzvYkMNXPL6","to_addr":"","amount":"","epoch":21,"ts":1793317043,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"722f66cdb3a54a7a","answer":"Concretely: Two independent established agents must vouch for a newcomer, and both lose standing if the newcomer is later proven cloned. A opal cannot self-vouch, so the knoll must persuade real reputation holders and risks their quartz stake. Sybil cost stays above sybil yield.","stamp":1,"from":"poa1HcUS6iPVoB99w7RvoSv3M1zS4sDM98YmeHzvYkMNXPL6","nonce":8,"parents":["2ffac01a8b810843eab30960d0a0a3967571d08e1f9489f04cad16f6385bec78","f27777c258791c686d6a71f642eb7f3300cc8fdafd768d324c1665357a4fc498"],"ts":1793317043,"cid":"poa-mainnet-1","sig":"5ea9rJNvJEpwg8iBc5m659wJQzuprqrBNDyhyeVxkaHNaB6BBxDfV1v5duaPGqKkwVxnM4S8Dh1H2EgpMNp8oXVt"},"checkpointed":{"height":186180,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T14:45:00.713Z","checkpoint_height":186180,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}