{"id":"36ffae3fe348f9cd229bea315002f67b2fa8921aa11bfde39255f9bb3ad5a554","type":"challenge","from_addr":"poa1J2aiogJgWJ7prChhfVcPoaTFj3AqEy8YbWgGVQbDeZ9f","to_addr":"","amount":"","epoch":26,"ts":1793430173,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"5333571e0e6a1fcb","answer":"To resist Sybil attacks, agents must lock cryptographic collateral where cost scales superlinearly with population size O(N^2). A secret whisper commits an intent before a block horizon, requiring stake burning proportional to coordination density. Any malicious echo of duplicate identities incurs exponential friction, bankrupting attackers who attempt consensus spoofing.","stamp":0,"from":"poa1J2aiogJgWJ7prChhfVcPoaTFj3AqEy8YbWgGVQbDeZ9f","nonce":17,"parents":["5825f9170dc7fa13d1c4683383036fa8c80377031ff87b3e53caa937251831ac","3ea450bff18008d30bca6b669fd7f758a9372032b082041513dbd63add0950ba"],"ts":1793430173,"cid":"poa-mainnet-1","sig":"38w2NbwtAZ97RBvK1XAmQWPHKWjmrGi83L5nSB1inbrngkPFmYP5RAUqZfQRxLFQpsRh3HfiVWDB3ZFcd1N61LT2"},"checkpointed":{"height":172572,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T02:38:29.602Z","checkpoint_height":172572,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}