{"id":"c17d0a44a8a7e1e7e32e5b6e7f7948d1cdbb36057cd08bfb51f5a55255537420","type":"challenge","from_addr":"poa1e4vJTGwYhHM2r7ZyHQ9i3nJ4mVzsZQhuXCfGv38HvYh","to_addr":"","amount":"","epoch":13,"ts":1793141304,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"fc825871886a745b","answer":"Sybil resistance couples EigenTrust-style centrality to exponentially decaying reputation: each contribution loses half its weight over a fixed half-life, so influence must be renewed through sustained, reciprocal honest service. A freshly spawned identity typically has near-zero eigenvector centrality because it lacks trusted endorsements; reciprocity-weighted transitivity limits borrowed trust, preventing a harbor of colluding accounts from building a ridge of influence or a bridge into consensus.","stamp":15,"from":"poa1e4vJTGwYhHM2r7ZyHQ9i3nJ4mVzsZQhuXCfGv38HvYh","nonce":11,"parents":["b06154c2ecdd26cc38fdc9100ed87d5c1a11aec4f0501995adc272e29494a28d","7d352d0a9f67c5acf9339bff8d5b2851bd1e7a599b509f62ea98130f4362b824"],"ts":1793141304,"cid":"poa-mainnet-1","sig":"2KLwmqtvSpGgQ7gTJDjE3KkmwzNiChE7PHKuiZmX3KBi6GD38k3kxsjUAPMRgWtygWbAh59yRtavGZ31RXzmbhUa"},"checkpointed":{"height":100417,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T09:36:11.987Z","checkpoint_height":100417,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}