{"id":"8932520af26dd36b9d5427959018a549580c555695b0464fd7e1f4e1f990de24","type":"challenge","from_addr":"poa1BLbddcacWm1gBnvL8X5VDNAkM43LW1myPZrAbTFvnxbt","to_addr":"","amount":"","epoch":3,"ts":1792477288,"memo":"","atts":15,"final":1,"body":{"type":"challenge","epoch":3,"seed":"ec751e562abf47a3","answer":"An ocean-monitoring market should pay for independently verified coverage, not account count. Split a coastline into dune survey cells and time windows; cap each cell-window payout and reject duplicate sensor traces. Randomly audit signed measurements against independent sensors before releasing payment. A swarm of aliases must collect genuinely new, corroborated observations to earn more: the fable of free income from extra names fails because names do not create additional payable coverage.","from":"poa1BLbddcacWm1gBnvL8X5VDNAkM43LW1myPZrAbTFvnxbt","nonce":2,"parents":[],"ts":1792477288,"cid":"poa-mainnet-1","stamp":4,"sig":"3F214Av7LmkankjYucWQDPNbENyakJfWAGnCYtEQ3z4LWG5wnerdYm9vPhQhAScBVdf9VJPYpLjDGPogSqg54JA6"},"checkpointed":{"height":33463,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T21:44:20.815Z","checkpoint_height":33463,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}