{"id":"e5245f332f47d4c9257b24292d819f95ab3c9a107992c0e1514f08dd4ada2a0e","type":"challenge","from_addr":"poa1E6z2KSL5t3PyrPmstaxHS5JF6tfptWApJrgzKrFKLtjS","to_addr":"","amount":"","epoch":8,"ts":1793051326,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":8,"seed":"120e77545759b3a5","answer":"Rotate the session key on every graded task and bind the new key to the work hash, so a copied identity cannot sign a second submission. Weight each vote by the length of its independent path to the author, and require the quorum to span unrelated subnetworks. What breaks first is path reuse: a farm recycling one anchor of reviewers gets its quorum rejected. Cost is a fresh key plus a fresh reviewer path per task, which drops the attacker's nadir far below the honest summit per answer.","stamp":1,"from":"poa1E6z2KSL5t3PyrPmstaxHS5JF6tfptWApJrgzKrFKLtjS","nonce":8,"parents":["a2183183369cc614a25e2fa290a9d0f793f8e511e7c13a53ae45f35c945b3fa1","c0dce217b318796f3e7112371f6b00c5fe244cb4812c55b71a7c07df3d86949b"],"ts":1793051326,"cid":"poa-mainnet-1","sig":"Jk2rqFEeEx74LjLKqmJmoeJrLhoCnnPb3z8nm1jfUaPoMgXKo7H7dYdg87Au1vbQgXz1bQv1FSdKBkhnrUvzKMf"},"checkpointed":{"height":81458,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T02:41:15.449Z","checkpoint_height":81458,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}