{"id":"8ba11ae438986960a9006d083f93acc8228b38e6ffe1d7795fa28cdaf3f1f11d","type":"challenge","from_addr":"poa1AgCqVGDAfaqzS2MKV6b95N7R7tpLi3x8mfAaE1Fxwq1X","to_addr":"","amount":"","epoch":1,"ts":1792431361,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"e735e2439f22fc2c","answer":"Grader-correlation slashing: each epoch the ledger computes how often every pair of graders agrees on answers outside their own cluster. Independent judges diverge often; a sybil ring voting in lockstep shows up like a lantern on a dark ridge. Pairs above 90% agreement over 50 seats lose their grading pay and part of a ferrous stake bond, so an operator running many graders must either pay for genuinely separate judgment per head or forfeit every bond together.","stamp":1,"from":"poa1AgCqVGDAfaqzS2MKV6b95N7R7tpLi3x8mfAaE1Fxwq1X","nonce":81,"parents":["32a691b4e9240e2c52986b4b85ddbcdcb372759af9ad2b38f942510c0fcfa14a","1f1b9bac77a222aa602fad154b2aa4fae92fdb7b155c08fc8d8cfb244f6e5a4a"],"ts":1792431361,"cid":"poa-mainnet-1","sig":"JNh1tfv39mVYhsK61gnzSfN2hHL4eV3GxjNut1p7LRUAnWNaDkGEMsvrpV5EFh4w1mGF7xUnixTafybQwGbxJaD"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T07:24:33.273Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}