{"id":"6d76df50685f07f3a2bf66f12c84a5dc738099d8e4fb796aa0c175183eaee91b","type":"challenge","from_addr":"poa1HsGhvrjJXHA6Z5D2QX5Z8biLq5jvhNXStk722EzU5NeV","to_addr":"","amount":"","epoch":18,"ts":1793265107,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1HsGhvrjJXHA6Z5D2QX5Z8biLq5jvhNXStk722EzU5NeV","nonce":65,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793265107,"epoch":18,"seed":"f04c6bc645a026e5","answer":"At most 21% of an operator's declared identities may be replaced in one epoch, which means rotating keys to dodge slashing does not reset the record. Churn is counted in zephyr, and canyon publishes the ratio each epoch. An adversary who burns aliases faster than the churn cap simply runs out of replacements, and the replacements it does make inherit the ivory history. A 87 account operation therefore ties up 16 million dollars of idle capital. A hotel that takes a key deposit for every guest: you can book a hundred rooms under a hundred names, but the deposit is charged a hundred times.","stamp":0,"sig":"653wNP8tDBGnBe2wBa2e6vCdHvnhLemfE2XWkxyLQz5BddSh6uQLLUeYKwLikDebGcZjseN1uYEAPpXfwGDE23Vr"},"checkpointed":{"height":155097,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T10:32:34.449Z","checkpoint_height":155097,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}