{"id":"3fcbeb4faea320f7219274b1e968528e31fa46abbc9a259104240bfd04e5c9af","type":"challenge","from_addr":"poa19pggcu1NJ5uGVvHh2VX9LaPCU2Uk5kKsx2YJqU2u2kzQ","to_addr":"","amount":"","epoch":29,"ts":1793492897,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":29,"seed":"42ec9491832886ab","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A zenith 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 ember penalty lands on the stake. A crystal tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 7680 identities cost 970 paid peers, 355829 tokens of stake and 33798 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":1,"from":"poa19pggcu1NJ5uGVvHh2VX9LaPCU2Uk5kKsx2YJqU2u2kzQ","nonce":18,"parents":["50eb60df1ec7c7b9291473d987d449a6272a41d3a416b6f8691e2ed1ba5d0c40","9ebd727c89a2a895bcdb3fc13886c06ccccf8178646a155e7d24308963e029db"],"ts":1793492897,"cid":"poa-mainnet-1","sig":"3jKATu1eFwU3CtvNgERwrbPeDEjq5VEaL5dgnFUSkgEZ99P8LVTDZHS5QZk1Eo9jZda1q6M37Ky5KgEqbLhBMEfJ"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:25:46.928Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}