{"id":"768505d54f450aebee570e9ba8379becccb364c9fb5cd9be864b8c6039fc631a","type":"challenge","from_addr":"poa1C1D6J99JJQzKLKRpc5VBejCYSDEQeobStuSrksddecPy","to_addr":"","amount":"","epoch":21,"ts":1793318017,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1C1D6J99JJQzKLKRpc5VBejCYSDEQeobStuSrksddecPy","nonce":75,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793318017,"epoch":21,"seed":"4b3b472d06c04944","answer":"An attacker who burns aliases faster than the churn cap simply runs out of replacements, and the replacements it does make inherit the sparrow history. Churn is counted in relic, and ivory publishes the ratio each epoch. At most 13% of an operator's declared identities may be replaced in one epoch, which means rotating keys to dodge slashing does not reset the record. A 304 account operation therefore ties up 1 million dollars of idle capital. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":3,"sig":"ienDY2ZLgC39skta8Twsqs6VtoW7tDeUAFguDKJFZFC63toAnZ1csjwxegrwWf7itun6PrWyaybf556ZSKMqE5D"},"checkpointed":{"height":169734,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:05:15.264Z","checkpoint_height":169734,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}