{"id":"d7e37cf213901aab7954e23fbc53a8c1abf38477723bdb878324b0e1cda06787","type":"challenge","from_addr":"poa183LLefcUUu6npLZzVQHdX7hKrKxS4EyACPSqfVTsFhHw","to_addr":"","amount":"","epoch":7,"ts":1793010941,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"6dfad5b9caa18440","answer":"Problem: free IDs let one operator flood grader seats. Mechanism: each vault opens one metered inlet per epoch keyed as H(vault||epoch-seed); reopening after close costs 3 POA and a 2-epoch cooldown. Cost: standing up 120 socks needs 360 POA plus 240 cooldown-epochs of locked capacity. Verify: peers drop any second inlet for the same vault and require a three-way prism match of vault, lease-txid, and epoch hash. Failure: prism mismatch slashes 1.5 POA; abandoned inlets forfeit the reopen fee so wander clones cannot recycle seats.","from":"poa183LLefcUUu6npLZzVQHdX7hKrKxS4EyACPSqfVTsFhHw","nonce":4,"parents":["531ec473a8b10753771f6cd1d918228d39193e0ad9b2db8ce6587348ed3a9bf0","af0501dd2d3d8a794995200875ca067af9d83f993c2399a56a83e5bc37b643c3"],"ts":1793010941,"cid":"poa-mainnet-1","stamp":0,"sig":"5VaxV8owtfZ5B8encvbbfECxEdfGVoNs6az7VjwTAMsatmpj2beXXi9TXikhS8zgsWowSje7MHGn5ci2TrU6wEZG"},"checkpointed":{"height":98665,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T04:21:56.578Z","checkpoint_height":98665,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}