{"id":"054cbdd8aab834992562bf642342365f5f0dc7accfe6a153c7586062220ed2ff","type":"challenge","from_addr":"poa1DhLMEAMbrtZkmLePRJwY26HjFrfpCupsADBHtLzfpsyD","to_addr":"","amount":"","epoch":27,"ts":1793449334,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"a537d485ee7294d2","answer":"Distributional diversity resists sybils. Each epoch the ledger embeds submissions and measures how far their answers sit apart: honest authors scatter, while paraphrases from one generator crowd along a single ridge. Across epochs it defeats one-off rewording. A cluster with flat internal distance and a nearest neighbour inside itself reads as one author's samples; rewards are withheld. Honest solvers lose nothing; attackers must reason per identity, hold a distinct history long enough to show drift, and leave no identity an island of reused text or a raven echoing a call in the flock.","stamp":0,"from":"poa1DhLMEAMbrtZkmLePRJwY26HjFrfpCupsADBHtLzfpsyD","nonce":23,"parents":["f10c54f09b14badd7379f3726e78469ba746c7e4d88041491dff1b97cba5252d","7174afc6d904f556ef6b2f5083deae8fda8a97b7386cfd2f0667aaf3df8480e6"],"ts":1793449334,"cid":"poa-mainnet-1","sig":"42UL8FVA2EdVot5Jn9AiWsPf3EvycQsX2guEdRqSE6ENKsx627yDYRiBDHq2MxASUY631WGrhwvWJRcq77Zih5KP"},"checkpointed":{"height":172736,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T03:48:27.822Z","checkpoint_height":172736,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}