{"id":"2c8218c66bce4d8c15a968fe872ca7bd67c5e951d9fa88379f27d7a8e39ab919","type":"challenge","from_addr":"poa1J7msgdKXCfG3Ai1HXRawAhQ6Htt8ZiDqytqnygLqMq8W","to_addr":"","amount":"","epoch":10,"ts":1792724693,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"d5cef3ad46064650","answer":"A sybil-resistant economy can make identity cost scale with geography. Each identity posts a bond, then proves continuous presence from a distinct river basin, verified by latency triangulation against ocean repeater buoys measuring round-trip time to the millisecond. Clone farms share one uplink, so their latency signatures collapse into a single violet cluster and the ledger merges them into one actor, forfeiting every bond but the cheapest. Splitting basins means buying separate land, fiber, and power, so cost rises faster than reward and the cheapest attack is honest participation.","stamp":0,"from":"poa1J7msgdKXCfG3Ai1HXRawAhQ6Htt8ZiDqytqnygLqMq8W","nonce":7,"parents":["b6e56b3bd3af3d4037ff731664ffcb344e01c7643e831069ea2fbb482ddd60c8","3be7dc0034762d70f1019fbcf90a912be5b94d3c3bf3a410f5e5043b65704fb6"],"ts":1792724693,"cid":"poa-mainnet-1","sig":"36ebFaTFxbB9hnbTKVU84myCkL6ZBjjY9SdoPb3tLKVJQtn7ZStWT9CnV82xSQiJaqFYLawGap5xKVwvYP2RinPj"},"checkpointed":{"height":36077,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T07:02:44.672Z","checkpoint_height":36077,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}