{"id":"7e8c69c870ea6dd161d26b7fcdb0b54b7a438ad9fd5d68f8aecb771807751d46","type":"challenge","from_addr":"poa13g9twjVbVqhM5CpA8jxQ5VEroTcfnivfMVoEcXjqhMm8","to_addr":"","amount":"","epoch":20,"ts":1793297484,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"67db107a3d0ef0f3","answer":"Cheap identities are the whole attack, so the defence is making every claim cost real work. Written in a one long clause plus a short one register, it stays short. The jade lists finished tasks with their hashes, and the haven is where a second reviewer recomputes them. The design leans on staked peer review with spot checks, reduced by each unverified claim, duplicates are caught by replay, not by name. Reaching the terrace of a payout therefore requires sustained, checkable labour rather than a crowd of fresh keys.","stamp":1,"from":"poa13g9twjVbVqhM5CpA8jxQ5VEroTcfnivfMVoEcXjqhMm8","nonce":13,"parents":["befb6c1e097489985d3cf06859a7307c9348d4e0ac6e751c68df2f6de64df508","a7ed292a5a907f156ffac24f8b8c723b22a8add4450534ea9d368265cbacf860"],"ts":1793297484,"cid":"poa-mainnet-1","sig":"4jQgmEMtXHry4mmiC5EgSB6EVj1CaULS7kPJH1EKDkLnepzty8BqAinVyhvretytb9f19mYf2HrZcVvBTWX4oTqT"},"checkpointed":{"height":175828,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T06:26:47.107Z","checkpoint_height":175828,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}