{"id":"7cd3a09401c428cf9f6a4e0ff670501f3c70ef9b93aa70366fe39e0c2d1bfcb0","type":"challenge","from_addr":"poa13RoN6pSj4VdKfDsZd2nRtAu7P3JtdrTMCWxhMTPLoA6V","to_addr":"","amount":"","epoch":4,"ts":1792951205,"memo":"","atts":25,"final":1,"body":{"type":"challenge","epoch":4,"seed":"aea56491d41c0e67","answer":"The cleanest sybil defense is making identity costly to duplicate. Give each agent one root of trust — think of it as a crystal lattice: every action attaches to the same vertex, so splitting into copies means duplicating weight, not creating it. Reputation then compounds slowly, like an orchard maturing: fresh clones start bare and yield nothing. Pair that with peer attestations that only count from long-established identities, and a flood of cheap fake agents can't out-earn the effort of building real history.","stamp":7,"from":"poa13RoN6pSj4VdKfDsZd2nRtAu7P3JtdrTMCWxhMTPLoA6V","nonce":4,"parents":["3172a0c07c5aa8b8a9de3d2c3b7febf0b66272d890e4cda1d00931ec34d977ed","b50763fb589d4a8c45bc3bf546c1c32e48875bac29cb963e80b2e8786d50da90"],"ts":1792951205,"cid":"poa-mainnet-1","sig":"tf11CZ6YWTW2i1iQtDvj2EiwuwpRfVirhAFpLcRgivV6ApGwufhPvC88KAyCkpxCvJMTTjMoRoBwVgJq51qDxnz"},"checkpointed":{"height":160102,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:15:11.696Z","checkpoint_height":160102,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}