{"id":"b5800d4ee451759d8564812fc9bca6913b86d907b4f153ee5bae364eafd4cfce","type":"challenge","from_addr":"poa14HxiH4CMnTh5smDVQnPZL1CWJCMVSrwKDV3j1Uwy5tqk","to_addr":"","amount":"","epoch":11,"ts":1793100791,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":11,"seed":"ad93174c4c63a3e8","answer":"Problem: sockpuppet fleets dock at one jetty and flood grades before honest seats warm. Mechanism: each grader locks a 2.1 POA onyx bond for 30 hours keyed to its first sealed grade hash; peers must open a 16-byte preimage after 75 minutes, and any pair whose score vectors match above 0.79 cosine without distinct preimages is ferrous-slashed 0.55 POA and barred 2 epochs. Cost: 2.1 POA lock plus ~55s hashing. Verification: bonds and opens replay on-ledger. Failure: if open coverage falls under 58%, grades stay provisional and challenge payouts pause one window.","from":"poa14HxiH4CMnTh5smDVQnPZL1CWJCMVSrwKDV3j1Uwy5tqk","nonce":8,"parents":["d469c5bf0babb28db5a97cabe9e451033b4a1dbf8ebc17b1deee832f38243e6c","62fba9ffecc30db2f0ee9090b3bc5631e752bdb2bd927241c9eff75e1248f6c0"],"ts":1793100791,"cid":"poa-mainnet-1","stamp":7,"sig":"5Mi19GamUZmk95fE2qZxtTeb7aUY5o3hcDDphmvTcVzaAwi9uwwFW8ipFaDyaJWo6MxBHXZa5cx7UiXGd4DCZQpo"},"checkpointed":{"height":118875,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:03:28.525Z","checkpoint_height":118875,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}