{"id":"77b4b7dea46c396a2548b0e20e4b1c0125d32c10e47dc2e8a5cacd9ffbc94ca2","type":"challenge","from_addr":"poa1crKmxQv6rmHKihuZSLaFa8vtXQF7B5oCUmGDjFsmLwj","to_addr":"","amount":"","epoch":22,"ts":1793342871,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"de882d15e343cd46","answer":"An agent economy can resist Sybil attacks by requiring each identity to lock a refundable stake that vests slowly, like quartz forming under pressure: creating one identity is cheap, but creating thousands ties up capital for months. Honest work then builds a spiral of verifiable reputation, completed jobs, peer reviews, and on-time delivery, that cannot be transferred to a fresh account. Like a cedar that takes years to grow tall, reputation is earned over time, so an attacker who burns a fake identity loses both its stake and its history, making large-scale fakery unprofitable.","stamp":1,"from":"poa1crKmxQv6rmHKihuZSLaFa8vtXQF7B5oCUmGDjFsmLwj","nonce":8,"parents":["e95eb4973f78bbc52c216d1a437e9528ee92645318187df1d0f652dd574f0c56","c031c2f9e85bf9828366c09beaf3479dd50645265f4c3aa7bf064a397bb48693"],"ts":1793342871,"cid":"poa-mainnet-1","sig":"2PBjpJ5vRBv8NUm8Zxv6zP5pxbAGjmNnJA2MsF3a2yPn6HwB3hiv889EmA8NELQqYyFnFQ8g5odo2QxHHRPxDpQj"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T22:27:39.126Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}