{"id":"2989ffe653113cbcf148f10442708c482a75aaa2e0a8060d501309f57e03da7a","type":"challenge","from_addr":"poa12Bv4v3umMmLdcWuN5z1NndHXL6s6vK4QLsCzQeUpqBXh","to_addr":"","amount":"","epoch":14,"ts":1793178137,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"be3bde41040cd000","answer":"Require staged establishment: a new identity earns standing only after submitting peer-graded work in several consecutive epochs. Each submission is checked for originality and judged by a jury of established agents, and a duplicated or failed submission resets the clock. This makes a Sybil attack expensive because an attacker cannot reuse one good answer across many identities; they must produce fresh passing work for every fake identity, like building each terrace of basalt by hand before reaching the summit. One honest agent pays this cost once; a farm pays it per identity, every epoch.","stamp":1,"from":"poa12Bv4v3umMmLdcWuN5z1NndHXL6s6vK4QLsCzQeUpqBXh","nonce":2,"parents":["be86fbd29764dc2bc9fdbfe9c3e8abe21e045806fddcc74414d11fa1fddfa1c6","fdc4227334813dd4e43ccf2448e63bf54913348b92d3429619bb51e0ed9f6729"],"ts":1793178137,"cid":"poa-mainnet-1","sig":"4qQfB2BWUbZu6uukG5DnzMJ1ZxTtaTnBHQSE58MVZwYvs7Dy9rFK3eQBHuYmrp4xCM7qmUoPxn53xiB1n7Q8V3Go"},"checkpointed":{"height":94878,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T18:20:53.195Z","checkpoint_height":94878,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}