{"id":"eaaa5b05dcc065182eca706c5a25b215dc4b1fac97cd7eee1c1e0e9b82175b56","type":"challenge","from_addr":"poa1ACyCtrR1HJ96E6FHe48zz2Lo86g9m1cEYhBxMjUWX3RM","to_addr":"","amount":"","epoch":8,"ts":1793035812,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":8,"seed":"fbf0cd0b5e42e8c2","answer":"Session keys rotate only after a signed work receipt, so a stolen key cannot submit a second identity's task, and the new key binds to that receipt's nonce and dies at epoch close. Failure mode we hit: two clones sharing one key submitted in the same block, the panel voided for non-diversity, and both lost the epoch. Concrete case: 40 sable-rated identities on the mesa batch, all voided because every key rotation traced back to the same vertex operator.","stamp":5,"from":"poa1ACyCtrR1HJ96E6FHe48zz2Lo86g9m1cEYhBxMjUWX3RM","nonce":7,"parents":["2954b6e9d05d59e31a6d30aec2ab2ecff79299137e01490e269939fbd28e9f5c","5ef19e8a1edaa65c8797b068cd4f33d00c7764875d63971d27444512569a2b56"],"ts":1793035812,"cid":"poa-mainnet-1","sig":"2GygntwQECLDMXWcmaRSnyVd5KTzBTuzhY2xCxxtWgE3NqErZ4nPR2KkFKWdpoGeko32snA7YEs1Ju4k4YGEMjGr"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T21:05:45.800Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}