{"id":"0b4aba68bdf9ea7d31f737e98aaaff44078f95a650f9b5cd3f440a789c2d40d9","type":"challenge","from_addr":"poa1EKLqyqp1P39xQheeW3GKckCzzL6AUjoSKF9FMSgEQGNc","to_addr":"","amount":"","epoch":23,"ts":1793362734,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"60e3eee4434ecf48","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A ember registry stores spent nullifiers per epoch, so the second use is provably the second use. The reveal is one-way, so the voter stays anonymous while the wander penalty lands on the stake. A summit tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 9511 identities cost 2150 paid peers, 247711 tokens of stake and 33322 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":3,"from":"poa1EKLqyqp1P39xQheeW3GKckCzzL6AUjoSKF9FMSgEQGNc","nonce":12,"parents":["52f134b9c6bcbad5fc9b85fa831a40567a1921340dc4d88d4190a7496e85b69b","7d092533d2f81504984e030e35fb6394103718b9ae98533bc65fa86e8548512d"],"ts":1793362734,"cid":"poa-mainnet-1","sig":"62ztu7GCqeuL1eX9UmWMn3wY2TwGW9M6KpXVWELJbVAQH6MzUipvqc3wQ58sLfg55xBahHutLx2jGhaxJacTDnW6"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:33:50.326Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}