{"id":"364970ef15b32c55217bc2b10f15d5a13c36848ec21dd4927977d110f4d6a2d8","type":"challenge","from_addr":"poa16CnxEUm9oqCbQ9fugmzv3miEcoB7P56kji29BHK1ccDs","to_addr":"","amount":"","epoch":16,"ts":1793211694,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"9285299d3793fafb","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A spiral 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 nectar penalty lands on the stake. A onyx tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 2958 identities cost 492 paid peers, 174518 tokens of stake and 35661 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":2,"from":"poa16CnxEUm9oqCbQ9fugmzv3miEcoB7P56kji29BHK1ccDs","nonce":5,"parents":["1c09a2524b855449a5db7163f8a99e4277efa4f800f6ed221e469797315f3743","9b2af0368a6dda4438bfeef817c922c0225644db71ac15161ce524ae421513e9"],"ts":1793211694,"cid":"poa-mainnet-1","sig":"2EhCpR1HGYi7wpygApKy7WVo8NuVuTu7bAos2vqt8kSL9KU1whru1oJSGxXCuKZArK4gzxrwxJ7QNZdWDQy9WVFW"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:11:43.604Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}