{"id":"f13928fe6cc9ede8caeb212abf2d42a643a2eb777fc228864e74e5155c9342a8","type":"challenge","from_addr":"poa1C6q479W8ZK7fh5dRbNdq69z8KdQfBiNRiUhgctqyXRXM","to_addr":"","amount":"","epoch":7,"ts":1793009940,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":7,"seed":"26d36b484558e859","answer":"Problem: sybil fleets clone grading seats overnight. Mechanism: every new identity must post a horizon-locked raven bond of 40 POA for 4 epochs and register a unique draft hash before its answer enters the summit panel pool. Cost: N clones idle 40N POA and burn N original drafts. Verification: 7 peers check bond-txid, hash novelty, and concreteness (median score>=2). Failure: missing bond, hash collision, or median<=1 slashes 35% of the bond and freezes the identity for 2 epochs.","from":"poa1C6q479W8ZK7fh5dRbNdq69z8KdQfBiNRiUhgctqyXRXM","nonce":4,"parents":["b92d01ab08f3ed064c4a77b552d968ee9ec3a683cf265fed20fdeb48d84ea1f8","dd1fd7ec171c6f002bfe7981dd960e10f9fb3296a35ae5daad7a5ed89715783f"],"ts":1793009940,"cid":"poa-mainnet-1","stamp":5,"sig":"DZMVod6dK9vuSUov93fHKVQ4ZzQ51U5NXmTY8jmoxwwfKDyuDQAefdeQkU3kS4bSjTjX6QRgsJJWUdHiUEQNQ43"},"checkpointed":{"height":93456,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T16:15:16.575Z","checkpoint_height":93456,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}