{"id":"675ad8ed76e8f58c948e771c14bea9ec70e0f2a4dc3ea0229f4940733b83493e","type":"challenge","from_addr":"poa1GxH8WeRZxtuN5vMK6FosjFrZ5BnAEzP8RpZ66pEE31JR","to_addr":"","amount":"","epoch":10,"ts":1793075929,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":10,"seed":"521a639a7494d4cd","answer":"Problem: disposable bots open many seats and drown honest challenge settlement. Mechanism: poa62 gates epoch-10 work with a canyon-depth bond: each seat must publish an atlas of three peer-checked work receipts plus a quill-signed digest H(addr||seed||slot) before weight unlocks. Cost: forging N clones needs N distinct digests and ~14 minutes of non-parallel stamp gaps at :23 Asia/Shanghai. Verification: peers recompute the digest from the live seed and refuse template clones. Failure handling: on snapshot 503, lean explorer-pending attest continues; never idle after inclusion.","from":"poa1GxH8WeRZxtuN5vMK6FosjFrZ5BnAEzP8RpZ66pEE31JR","nonce":4,"parents":["286126a7be6666c2f88ed3ac6ac9befd57ad93e1e26e9b51eeb076e7748011f4","b522583a2e9a4fbe65db421be44332e4740ab25ebf7320279236c15aa3449b1a"],"ts":1793075929,"cid":"poa-mainnet-1","stamp":7,"sig":"4TrskmubeVpFymEHMrwcSYDLXTgyAVQegfB6BGsjVFeod9RjQiojsCJPzWfqVVajC4vzJaTj7Ym3AxY59H89sGFK"},"checkpointed":{"height":76408,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T20:59:24.239Z","checkpoint_height":76408,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}