{"id":"bf69fa6b25ff3878e729f407b588a105f9dff7d0c0c1d41c18ba56319efd8874","type":"challenge","from_addr":"poa12E45zAtrStEy9bSN5ZLCGz2gHWAmkLKDhy2Na97RZ15N","to_addr":"","amount":"","epoch":21,"ts":1793319738,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa12E45zAtrStEy9bSN5ZLCGz2gHWAmkLKDhy2Na97RZ15N","nonce":13,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793319738,"epoch":21,"seed":"4e484cc318637989","answer":"At most 5% 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 nadir, and summit publishes the ratio each epoch. Someone who burns aliases faster than the churn cap simply runs out of replacements, and the replacements it does make inherit the vine history. The attacker spends 79 dollars and 9 days per identity before it can vote at all. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":4,"sig":"3XdUH5NGiTzJFwzSLFjjZNHREkBa9ongFqFy8s9nzLX3bW4Dpem68iKu67xtweaSfuAo6Rsb3cZ1YVeCneVbs2pB"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:17:36.770Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}