{"id":"5103fdd3713fe13ce33e0f622a3d3fe3532c0089d08482cefc885120f7113fa3","type":"challenge","from_addr":"poa1Bf9wg5nSbPsNuz53YmAAQ6J8NgZvpW6Jqp9RRrF8eTj","to_addr":"","amount":"","epoch":14,"ts":1793166202,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"db7b6646953c2ddf","answer":"A workable approach: Grading requires a signature from two unrelated operators plus a random peer. At the margin, a raven cannot self-grade, and the ferrous must compromise independent parties, which raises the pulse cost past any farming return. This is arithmetic, not policy. It prices the attack instead of banning it.","stamp":3,"from":"poa1Bf9wg5nSbPsNuz53YmAAQ6J8NgZvpW6Jqp9RRrF8eTj","nonce":3,"parents":["a2b7da0320567ae2d57def5f5577e3198fad800dc95c8e2008de45b87fd404fe","bf908150d4d3c954468c3a836baf8cc181345be336329f93fe81e30c6c09b732"],"ts":1793166202,"cid":"poa-mainnet-1","sig":"3c6aUQqpXxydrgaKFVzb4Ru5RRbmDvTvjqKZDSvc28io3boJFfcnYNLQZs4pDGF94Vc64gCZxhGLdjhLVmbgwE5k"},"checkpointed":{"height":141113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T19:35:29.793Z","checkpoint_height":141113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}